annotate gcc/tree.def @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
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1 /* This file contains the definitions and documentation for the
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2 tree codes used in GCC.
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3 Copyright (C) 1987-2020 Free Software Foundation, Inc.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it under
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8 the terms of the GNU General Public License as published by the Free
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9 Software Foundation; either version 3, or (at your option) any later
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10 version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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21
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22 /* For tcc_references, tcc_expression, tcc_comparison, tcc_unary,
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23 tcc_binary, and tcc_statement nodes, which use struct tree_exp, the
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24 4th element is the number of argument slots to allocate. This
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25 determines the size of the tree node object. Other nodes use
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26 different structures, and the size is determined by the tree_union
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27 member structure; the 4th element should be zero. Languages that
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28 define language-specific tcc_exceptional or tcc_constant codes must
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29 define the tree_size langhook to say how big they are.
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30
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31 These tree codes have been sorted so that the macros in tree.h that
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32 check for various tree codes are optimized into range checks. This
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33 gives a measurable performance improvement. When adding a new
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34 code, consider its placement in relation to the other codes. */
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35
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36 /* Any erroneous construct is parsed into a node of this type.
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37 This type of node is accepted without complaint in all contexts
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38 by later parsing activities, to avoid multiple error messages
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39 for one error.
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40 No fields in these nodes are used except the TREE_CODE. */
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41 DEFTREECODE (ERROR_MARK, "error_mark", tcc_exceptional, 0)
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42
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43 /* Used to represent a name (such as, in the DECL_NAME of a decl node).
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44 Internally it looks like a STRING_CST node.
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45 There is only one IDENTIFIER_NODE ever made for any particular name.
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46 Use `get_identifier' to get it (or create it, the first time). */
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47 DEFTREECODE (IDENTIFIER_NODE, "identifier_node", tcc_exceptional, 0)
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48
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49 /* Has the TREE_VALUE and TREE_PURPOSE fields. */
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50 /* These nodes are made into lists by chaining through the
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51 TREE_CHAIN field. The elements of the list live in the
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52 TREE_VALUE fields, while TREE_PURPOSE fields are occasionally
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53 used as well to get the effect of Lisp association lists. */
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54 DEFTREECODE (TREE_LIST, "tree_list", tcc_exceptional, 0)
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55
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56 /* These nodes contain an array of tree nodes. */
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57 DEFTREECODE (TREE_VEC, "tree_vec", tcc_exceptional, 0)
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58
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59 /* A symbol binding block. These are arranged in a tree,
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60 where the BLOCK_SUBBLOCKS field contains a chain of subblocks
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61 chained through the BLOCK_CHAIN field.
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62 BLOCK_SUPERCONTEXT points to the parent block.
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63 For a block which represents the outermost scope of a function, it
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64 points to the FUNCTION_DECL node.
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65 BLOCK_VARS points to a chain of decl nodes.
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66 BLOCK_CHAIN points to the next BLOCK at the same level.
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67 BLOCK_ABSTRACT_ORIGIN points to the original (abstract) tree node which
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68 this block is an instance of, or else is NULL to indicate that this
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69 block is not an instance of anything else. When non-NULL, the value
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70 could either point to another BLOCK node or it could point to a
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71 FUNCTION_DECL node (e.g. in the case of a block representing the
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72 outermost scope of a particular inlining of a function).
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73 TREE_ASM_WRITTEN is nonzero if the block was actually referenced
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74 in the generated assembly. */
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75 DEFTREECODE (BLOCK, "block", tcc_exceptional, 0)
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76
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77 /* Each data type is represented by a tree node whose code is one of
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78 the following: */
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79 /* Each node that represents a data type has a component TYPE_SIZE
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80 that evaluates either to a tree that is a (potentially non-constant)
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81 expression representing the type size in bits, or to a null pointer
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82 when the size of the type is unknown (for example, for incomplete
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83 types such as arrays of unspecified bound).
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84 The TYPE_MODE contains the machine mode for values of this type.
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85 The TYPE_POINTER_TO field contains a type for a pointer to this type,
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86 or zero if no such has been created yet.
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87 The TYPE_NEXT_VARIANT field is used to chain together types
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88 that are variants made by type modifiers such as "const" and "volatile".
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89 The TYPE_MAIN_VARIANT field, in any member of such a chain,
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90 points to the start of the chain.
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91 The TYPE_NAME field contains info on the name used in the program
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92 for this type (for GDB symbol table output). It is either a
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93 TYPE_DECL node, for types that are typedefs, or an IDENTIFIER_NODE
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94 in the case of structs, unions or enums that are known with a tag,
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95 or zero for types that have no special name.
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96 The TYPE_CONTEXT for any sort of type which could have a name or
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97 which could have named members (e.g. tagged types in C/C++) will
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98 point to the node which represents the scope of the given type, or
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99 will be NULL_TREE if the type has "file scope". For most types, this
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100 will point to a BLOCK node or a FUNCTION_DECL node, but it could also
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101 point to a FUNCTION_TYPE node (for types whose scope is limited to the
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102 formal parameter list of some function type specification) or it
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103 could point to a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE node
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104 (for C++ "member" types).
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105 For non-tagged-types, TYPE_CONTEXT need not be set to anything in
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106 particular, since any type which is of some type category (e.g.
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107 an array type or a function type) which cannot either have a name
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108 itself or have named members doesn't really have a "scope" per se.
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109 The TYPE_STUB_DECL field is used as a forward-references to names for
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110 ENUMERAL_TYPE, RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE nodes;
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111 see below. */
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112
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113 /* The ordering of the following codes is optimized for the checking
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114 macros in tree.h. Changing the order will degrade the speed of the
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115 compiler. OFFSET_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, INTEGER_TYPE,
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116 REAL_TYPE, POINTER_TYPE. */
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117
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118 /* An offset is a pointer relative to an object.
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119 The TREE_TYPE field is the type of the object at the offset.
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120 The TYPE_OFFSET_BASETYPE points to the node for the type of object
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121 that the offset is relative to. */
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122 DEFTREECODE (OFFSET_TYPE, "offset_type", tcc_type, 0)
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123
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124 /* C enums. The type node looks just like an INTEGER_TYPE node.
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125 The symbols for the values of the enum type are defined by
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126 CONST_DECL nodes, but the type does not point to them;
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127 however, the TYPE_VALUES is a list in which each element's TREE_PURPOSE
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128 is a name and the TREE_VALUE is the value (an INTEGER_CST node). */
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129 /* A forward reference `enum foo' when no enum named foo is defined yet
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130 has zero (a null pointer) in its TYPE_SIZE. The tag name is in
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131 the TYPE_NAME field. If the type is later defined, the normal
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132 fields are filled in.
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133 RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE forward refs are
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134 treated similarly. */
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135 DEFTREECODE (ENUMERAL_TYPE, "enumeral_type", tcc_type, 0)
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136
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137 /* Boolean type (true or false are the only values). Looks like an
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138 INTEGRAL_TYPE. */
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139 DEFTREECODE (BOOLEAN_TYPE, "boolean_type", tcc_type, 0)
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140
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141 /* Integer types in all languages, including char in C.
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parents:
diff changeset
142 Also used for sub-ranges of other discrete types.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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143 Has components TYPE_MIN_VALUE, TYPE_MAX_VALUE (expressions, inclusive)
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diff changeset
144 and TYPE_PRECISION (number of bits used by this type). */
0
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parents:
diff changeset
145 DEFTREECODE (INTEGER_TYPE, "integer_type", tcc_type, 0)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
146
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 /* C's float and double. Different floating types are distinguished
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 by machine mode and by the TYPE_SIZE and the TYPE_PRECISION. */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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149 DEFTREECODE (REAL_TYPE, "real_type", tcc_type, 0)
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parents:
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150
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 /* The ordering of the following codes is optimized for the checking
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 macros in tree.h. Changing the order will degrade the speed of the
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 compiler. POINTER_TYPE, REFERENCE_TYPE. Note that this range
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154 overlaps the previous range of ordered types. */
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155
0
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156 /* All pointer-to-x types have code POINTER_TYPE.
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157 The TREE_TYPE points to the node for the type pointed to. */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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158 DEFTREECODE (POINTER_TYPE, "pointer_type", tcc_type, 0)
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159
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160 /* A reference is like a pointer except that it is coerced
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161 automatically to the value it points to. Used in C++. */
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162 DEFTREECODE (REFERENCE_TYPE, "reference_type", tcc_type, 0)
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163
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164 /* The C++ decltype(nullptr) type. */
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165 DEFTREECODE (NULLPTR_TYPE, "nullptr_type", tcc_type, 0)
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166
0
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167 /* _Fract and _Accum types in Embedded-C. Different fixed-point types
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168 are distinguished by machine mode and by the TYPE_SIZE and the
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169 TYPE_PRECISION. */
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170 DEFTREECODE (FIXED_POINT_TYPE, "fixed_point_type", tcc_type, 0)
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171
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172 /* The ordering of the following codes is optimized for the checking
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parents:
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173 macros in tree.h. Changing the order will degrade the speed of the
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174 compiler. COMPLEX_TYPE, VECTOR_TYPE, ARRAY_TYPE. */
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175
0
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176 /* Complex number types. The TREE_TYPE field is the data type
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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177 of the real and imaginary parts. It must be of scalar
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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178 arithmetic type, not including pointer type. */
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179 DEFTREECODE (COMPLEX_TYPE, "complex_type", tcc_type, 0)
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180
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181 /* Vector types. The TREE_TYPE field is the data type of the vector
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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182 elements. The TYPE_PRECISION field is the number of subparts of
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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183 the vector. */
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184 DEFTREECODE (VECTOR_TYPE, "vector_type", tcc_type, 0)
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185
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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186 /* The ordering of the following codes is optimized for the checking
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diff changeset
187 macros in tree.h. Changing the order will degrade the speed of the
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188 compiler. ARRAY_TYPE, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE.
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189 Note that this range overlaps the previous range. */
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190
0
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191 /* Types of arrays. Special fields:
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192 TREE_TYPE Type of an array element.
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193 TYPE_DOMAIN Type to index by.
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194 Its range of values specifies the array length.
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195 The field TYPE_POINTER_TO (TREE_TYPE (array_type)) is always nonzero
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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196 and holds the type to coerce a value of that array type to in C.
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197 TYPE_STRING_FLAG indicates a string (in contrast to an array of chars)
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198 in languages (such as Chill) that make a distinction. */
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199 /* Array types in C */
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200 DEFTREECODE (ARRAY_TYPE, "array_type", tcc_type, 0)
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201
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202 /* Struct in C. */
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203 /* Special fields:
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204 TYPE_FIELDS chain of FIELD_DECLs for the fields of the struct,
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205 VAR_DECLs, TYPE_DECLs and CONST_DECLs for record-scope variables,
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206 types and enumerators and FUNCTION_DECLs for methods associated
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207 with the type. */
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208 /* See the comment above, before ENUMERAL_TYPE, for how
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209 forward references to struct tags are handled in C. */
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210 DEFTREECODE (RECORD_TYPE, "record_type", tcc_type, 0)
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211
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212 /* Union in C. Like a struct, except that the offsets of the fields
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213 will all be zero. */
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214 /* See the comment above, before ENUMERAL_TYPE, for how
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215 forward references to union tags are handled in C. */
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216 DEFTREECODE (UNION_TYPE, "union_type", tcc_type, 0) /* C union type */
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217
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218 /* Similar to UNION_TYPE, except that the expressions in DECL_QUALIFIER
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219 in each FIELD_DECL determine what the union contains. The first
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220 field whose DECL_QUALIFIER expression is true is deemed to occupy
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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221 the union. */
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222 DEFTREECODE (QUAL_UNION_TYPE, "qual_union_type", tcc_type, 0)
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223
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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224 /* The ordering of the following codes is optimized for the checking
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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diff changeset
225 macros in tree.h. Changing the order will degrade the speed of the
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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226 compiler. VOID_TYPE, FUNCTION_TYPE, METHOD_TYPE. */
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227
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228 /* The void type in C */
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229 DEFTREECODE (VOID_TYPE, "void_type", tcc_type, 0)
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230
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231 /* Type of functions. Special fields:
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232 TREE_TYPE type of value returned.
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233 TYPE_ARG_TYPES list of types of arguments expected.
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234 this list is made of TREE_LIST nodes.
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235 In this list TREE_PURPOSE can be used to indicate the default
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236 value of parameter (used by C++ frontend).
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237 Types of "Procedures" in languages where they are different from functions
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238 have code FUNCTION_TYPE also, but then TREE_TYPE is zero or void type. */
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239 DEFTREECODE (FUNCTION_TYPE, "function_type", tcc_type, 0)
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240
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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241 /* METHOD_TYPE is the type of a function which takes an extra first
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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242 argument for "self", which is not present in the declared argument list.
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243 The TREE_TYPE is the return type of the method. The TYPE_METHOD_BASETYPE
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244 is the type of "self". TYPE_ARG_TYPES is the real argument list, which
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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245 includes the hidden argument for "self". */
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246 DEFTREECODE (METHOD_TYPE, "method_type", tcc_type, 0)
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247
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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248 /* This is a language-specific kind of type.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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249 Its meaning is defined by the language front end.
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250 layout_type does not know how to lay this out,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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251 so the front-end must do so manually. */
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252 DEFTREECODE (LANG_TYPE, "lang_type", tcc_type, 0)
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253
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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254 /* Expressions */
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255
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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256 /* First, the constants. */
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257
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258 DEFTREECODE (VOID_CST, "void_cst", tcc_constant, 0)
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259
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260 /* Contents are in an array of HOST_WIDE_INTs.
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261
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262 We often access these constants both in their native precision and
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263 in wider precisions (with the constant being implicitly extended
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264 according to TYPE_SIGN). In each case, the useful part of the array
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265 may be as wide as the precision requires but may be shorter when all
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266 of the upper bits are sign bits. The length of the array when accessed
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267 in the constant's native precision is given by TREE_INT_CST_NUNITS.
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268 The length of the array when accessed in wider precisions is given
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269 by TREE_INT_CST_EXT_NUNITS. Each element can be obtained using
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270 TREE_INT_CST_ELT.
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271
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272 INTEGER_CST nodes can be shared, and therefore should be considered
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273 read only. They should be copied before setting a flag such as
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274 TREE_OVERFLOW. If an INTEGER_CST has TREE_OVERFLOW already set,
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275 it is known to be unique. INTEGER_CST nodes are created for the
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276 integral types, for pointer types and for vector and float types in
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277 some circumstances. */
0
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278 DEFTREECODE (INTEGER_CST, "integer_cst", tcc_constant, 0)
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279
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280 /* Contents are given by POLY_INT_CST_COEFF. */
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281 DEFTREECODE (POLY_INT_CST, "poly_int_cst", tcc_constant, 0)
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282
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283 /* Contents are in TREE_REAL_CST field. */
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284 DEFTREECODE (REAL_CST, "real_cst", tcc_constant, 0)
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285
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286 /* Contents are in TREE_FIXED_CST field. */
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287 DEFTREECODE (FIXED_CST, "fixed_cst", tcc_constant, 0)
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288
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289 /* Contents are in TREE_REALPART and TREE_IMAGPART fields,
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290 whose contents are other constant nodes. */
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parents:
diff changeset
291 DEFTREECODE (COMPLEX_CST, "complex_cst", tcc_constant, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
292
131
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diff changeset
293 /* See generic.texi for details. */
0
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 DEFTREECODE (VECTOR_CST, "vector_cst", tcc_constant, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
295
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 /* Contents are TREE_STRING_LENGTH and the actual contents of the string. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 DEFTREECODE (STRING_CST, "string_cst", tcc_constant, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
298
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 /* Declarations. All references to names are represented as ..._DECL
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 nodes. The decls in one binding context are chained through the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 TREE_CHAIN field. Each DECL has a DECL_NAME field which contains
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 an IDENTIFIER_NODE. (Some decls, most often labels, may have zero
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 as the DECL_NAME). DECL_CONTEXT points to the node representing
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 the context in which this declaration has its scope. For
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 points to either the FUNCTION_DECL for the containing function, the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 RECORD_TYPE or UNION_TYPE for the containing type, or NULL_TREE or
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 a TRANSLATION_UNIT_DECL if the given decl has "file scope".
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 DECL_ABSTRACT_ORIGIN, if non-NULL, points to the original (abstract)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 ..._DECL node of which this decl is an (inlined or template expanded)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 instance.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 The TREE_TYPE field holds the data type of the object, when relevant.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 LABEL_DECLs have no data type. For TYPE_DECL, the TREE_TYPE field
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 contents are the type whose name is being declared.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 The DECL_ALIGN, DECL_SIZE,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
318 and DECL_MODE fields exist in decl nodes just as in type nodes.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 They are unused in LABEL_DECL, TYPE_DECL and CONST_DECL nodes.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
320
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 DECL_FIELD_BIT_OFFSET holds an integer number of bits offset for
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
322 the location. DECL_VOFFSET holds an expression for a variable
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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323 offset; it is to be multiplied by DECL_VOFFSET_UNIT (an integer).
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 These fields are relevant only in FIELD_DECLs and PARM_DECLs.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
325
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 DECL_INITIAL holds the value to initialize a variable to,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 or the value of a constant. For a function, it holds the body
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
328 (a node of type BLOCK representing the function's binding contour
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 and whose body contains the function's statements.) For a LABEL_DECL
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
330 in C, it is a flag, nonzero if the label's definition has been seen.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
331
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 PARM_DECLs use a special field:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 DECL_ARG_TYPE is the type in which the argument is actually
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 passed, which may be different from its type within the function.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
335
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 FUNCTION_DECLs use four special fields:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
337 DECL_ARGUMENTS holds a chain of PARM_DECL nodes for the arguments.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
338 DECL_RESULT holds a RESULT_DECL node for the value of a function.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 The DECL_RTL field is 0 for a function that returns no value.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 (C functions returning void have zero here.)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 The TREE_TYPE field is the type in which the result is actually
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 returned. This is usually the same as the return type of the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 FUNCTION_DECL, but it may be a wider integer type because of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
344 promotion.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 DECL_FUNCTION_CODE is a code number that is nonzero for
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 built-in functions. Its value is an enum built_in_function
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
347 that says which built-in function it is.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
348
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
349 DECL_SOURCE_FILE holds a filename string and DECL_SOURCE_LINE
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
350 holds a line number. In some cases these can be the location of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
351 a reference, if no definition has been seen.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
352
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
353 DECL_ABSTRACT is nonzero if the decl represents an abstract instance
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
354 of a decl (i.e. one which is nested within an abstract instance of a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
355 inline function. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
356
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 DEFTREECODE (FUNCTION_DECL, "function_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
358 DEFTREECODE (LABEL_DECL, "label_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 /* The ordering of the following codes is optimized for the checking
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
360 macros in tree.h. Changing the order will degrade the speed of the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
361 compiler. FIELD_DECL, VAR_DECL, CONST_DECL, PARM_DECL,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
362 TYPE_DECL. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 DEFTREECODE (FIELD_DECL, "field_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
364 DEFTREECODE (VAR_DECL, "var_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
365 DEFTREECODE (CONST_DECL, "const_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
366 DEFTREECODE (PARM_DECL, "parm_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 DEFTREECODE (TYPE_DECL, "type_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
368 DEFTREECODE (RESULT_DECL, "result_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
369
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parents: 0
diff changeset
370 /* A "declaration" of a debug temporary. It should only appear in
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
371 DEBUG stmts. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
372 DEFTREECODE (DEBUG_EXPR_DECL, "debug_expr_decl", tcc_declaration, 0)
0
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
373
131
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parents: 111
diff changeset
374 /* A stmt that marks the beginning of a source statement. */
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diff changeset
375 DEFTREECODE (DEBUG_BEGIN_STMT, "debug_begin_stmt", tcc_statement, 0)
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parents: 111
diff changeset
376
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
377 /* A namespace declaration. Namespaces appear in DECL_CONTEXT of other
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
378 _DECLs, providing a hierarchy of names. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
379 DEFTREECODE (NAMESPACE_DECL, "namespace_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
380
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
381 /* A declaration import.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
382 The C++ FE uses this to represent a using-directive; eg:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
383 "using namespace foo".
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
384 But it could be used to represent any declaration import construct.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
385 Whenever a declaration import appears in a lexical block, the BLOCK node
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
386 representing that lexical block in GIMPLE will contain an IMPORTED_DECL
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
387 node, linked via BLOCK_VARS accessor of the said BLOCK.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
388 For a given NODE which code is IMPORTED_DECL,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
389 IMPORTED_DECL_ASSOCIATED_DECL (NODE) accesses the imported declaration. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
390 DEFTREECODE (IMPORTED_DECL, "imported_decl", tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
391
111
kono
parents: 67
diff changeset
392 /* A namelist declaration.
kono
parents: 67
diff changeset
393 The Fortran FE uses this to represent a namelist statement, e.g.:
kono
parents: 67
diff changeset
394 NAMELIST /namelist-group-name/ namelist-group-object-list.
kono
parents: 67
diff changeset
395 Whenever a declaration import appears in a lexical block, the BLOCK node
kono
parents: 67
diff changeset
396 representing that lexical block in GIMPLE will contain an NAMELIST_DECL
kono
parents: 67
diff changeset
397 node, linked via BLOCK_VARS accessor of the said BLOCK.
kono
parents: 67
diff changeset
398 For a given NODE which code is NAMELIST_DECL,
kono
parents: 67
diff changeset
399 NAMELIST_DECL_ASSOCIATED_DECL (NODE) accesses the imported declaration. */
kono
parents: 67
diff changeset
400 DEFTREECODE (NAMELIST_DECL, "namelist_decl", tcc_declaration, 0)
kono
parents: 67
diff changeset
401
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
402 /* A translation unit. This is not technically a declaration, since it
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
403 can't be looked up, but it's close enough. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
404 DEFTREECODE (TRANSLATION_UNIT_DECL, "translation_unit_decl",\
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
405 tcc_declaration, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
406
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
407 /* References to storage. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
408
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
409 /* The ordering of the following codes is optimized for the classification
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
410 in handled_component_p. Keep them in a consecutive group. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
411
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
412 /* Value is structure or union component.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
413 Operand 0 is the structure or union (an expression).
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
414 Operand 1 is the field (a node of type FIELD_DECL).
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
415 Operand 2, if present, is the value of DECL_FIELD_OFFSET, measured
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
416 in units of DECL_OFFSET_ALIGN / BITS_PER_UNIT. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
417 DEFTREECODE (COMPONENT_REF, "component_ref", tcc_reference, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
418
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
419 /* Reference to a group of bits within an object. Similar to COMPONENT_REF
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
420 except the position is given explicitly rather than via a FIELD_DECL.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
421 Operand 0 is the structure or union expression;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
422 operand 1 is a tree giving the constant number of bits being referenced;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
423 operand 2 is a tree giving the constant position of the first referenced bit.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
424 The result type width has to match the number of bits referenced.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
425 If the result type is integral, its signedness specifies how it is extended
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
426 to its mode width. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
427 DEFTREECODE (BIT_FIELD_REF, "bit_field_ref", tcc_reference, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
428
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
429 /* Array indexing.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
430 Operand 0 is the array; operand 1 is a (single) array index.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
431 Operand 2, if present, is a copy of TYPE_MIN_VALUE of the index.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
432 Operand 3, if present, is the element size, measured in units of
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
433 the alignment of the element type. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
434 DEFTREECODE (ARRAY_REF, "array_ref", tcc_reference, 4)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
435
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
436 /* Likewise, except that the result is a range ("slice") of the array. The
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
437 starting index of the resulting array is taken from operand 1 and the size
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
438 of the range is taken from the type of the expression. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
439 DEFTREECODE (ARRAY_RANGE_REF, "array_range_ref", tcc_reference, 4)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
440
111
kono
parents: 67
diff changeset
441 /* Used only on an operand of complex type, these return
kono
parents: 67
diff changeset
442 a value of the corresponding component type. */
kono
parents: 67
diff changeset
443 DEFTREECODE (REALPART_EXPR, "realpart_expr", tcc_reference, 1)
kono
parents: 67
diff changeset
444 DEFTREECODE (IMAGPART_EXPR, "imagpart_expr", tcc_reference, 1)
kono
parents: 67
diff changeset
445
kono
parents: 67
diff changeset
446 /* Represents viewing something of one type as being of a second type.
kono
parents: 67
diff changeset
447 This corresponds to an "Unchecked Conversion" in Ada and roughly to
kono
parents: 67
diff changeset
448 the idiom *(type2 *)&X in C. The only operand is the value to be
kono
parents: 67
diff changeset
449 viewed as being of another type. It is undefined if the type of the
kono
parents: 67
diff changeset
450 input and of the expression have different sizes.
kono
parents: 67
diff changeset
451
kono
parents: 67
diff changeset
452 This code may also be used within the LHS of a MODIFY_EXPR, in which
kono
parents: 67
diff changeset
453 case no actual data motion may occur. TREE_ADDRESSABLE will be set in
kono
parents: 67
diff changeset
454 this case and GCC must abort if it could not do the operation without
kono
parents: 67
diff changeset
455 generating insns. */
kono
parents: 67
diff changeset
456 DEFTREECODE (VIEW_CONVERT_EXPR, "view_convert_expr", tcc_reference, 1)
kono
parents: 67
diff changeset
457
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mir3636
parents: 111
diff changeset
458 /* C unary `*'. One operand, an expression for a pointer. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
459 DEFTREECODE (INDIRECT_REF, "indirect_ref", tcc_reference, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
460
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
461 /* Used to represent lookup in a virtual method table which is dependent on
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
462 the runtime type of an object. Operands are:
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
463 OBJ_TYPE_REF_EXPR: An expression that evaluates the value to use.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
464 OBJ_TYPE_REF_OBJECT: Is the object on whose behalf the lookup is
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
465 being performed. Through this the optimizers may be able to statically
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
466 determine the dynamic type of the object.
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b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
467 OBJ_TYPE_REF_TOKEN: An integer index to the virtual method table. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
468 DEFTREECODE (OBJ_TYPE_REF, "obj_type_ref", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
469
111
kono
parents: 67
diff changeset
470 /* Used to represent the brace-enclosed initializers for a structure or an
kono
parents: 67
diff changeset
471 array. It contains a sequence of component values made out of a VEC of
kono
parents: 67
diff changeset
472 constructor_elt.
kono
parents: 67
diff changeset
473
kono
parents: 67
diff changeset
474 For RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE:
kono
parents: 67
diff changeset
475 The field INDEX of each constructor_elt is a FIELD_DECL.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
476
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
477 For ARRAY_TYPE:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
478 The field INDEX of each constructor_elt is the corresponding index.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
479 If the index is a RANGE_EXPR, it is a short-hand for many nodes,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
480 one for each index in the range. (If the corresponding field VALUE
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
481 has side-effects, they are evaluated once for each element. Wrap the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
482 value in a SAVE_EXPR if you want to evaluate side effects only once.)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
483
111
kono
parents: 67
diff changeset
484 Components that aren't present are cleared as per the C semantics,
kono
parents: 67
diff changeset
485 unless the CONSTRUCTOR_NO_CLEARING flag is set, in which case their
kono
parents: 67
diff changeset
486 value becomes undefined. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
487 DEFTREECODE (CONSTRUCTOR, "constructor", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
488
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
489 /* The expression types are mostly straightforward, with the fourth argument
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
490 of DEFTREECODE saying how many operands there are.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
491 Unless otherwise specified, the operands are expressions and the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
492 types of all the operands and the expression must all be the same. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
493
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
494 /* Contains two expressions to compute, one followed by the other.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
495 the first value is ignored. The second one's value is used. The
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
496 type of the first expression need not agree with the other types. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
497 DEFTREECODE (COMPOUND_EXPR, "compound_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
498
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
499 /* Assignment expression. Operand 0 is the what to set; 1, the new value. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
500 DEFTREECODE (MODIFY_EXPR, "modify_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
501
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
502 /* Initialization expression. Operand 0 is the variable to initialize;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
503 Operand 1 is the initializer. This differs from MODIFY_EXPR in that any
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
504 reference to the referent of operand 0 within operand 1 is undefined. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
505 DEFTREECODE (INIT_EXPR, "init_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
506
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
507 /* For TARGET_EXPR, operand 0 is the target of an initialization,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
508 operand 1 is the initializer for the target, which may be void
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
509 if simply expanding it initializes the target.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
510 operand 2 is the cleanup for this node, if any.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
511 operand 3 is the saved initializer after this node has been
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
512 expanded once; this is so we can re-expand the tree later. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
513 DEFTREECODE (TARGET_EXPR, "target_expr", tcc_expression, 4)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
514
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
515 /* Conditional expression ( ... ? ... : ... in C).
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
516 Operand 0 is the condition.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
517 Operand 1 is the then-value.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
518 Operand 2 is the else-value.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
519 Operand 0 may be of any type.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
520 Operand 1 must have the same type as the entire expression, unless
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
521 it unconditionally throws an exception, in which case it should
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
522 have VOID_TYPE. The same constraints apply to operand 2. The
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
523 condition in operand 0 must be of integral type.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
524
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
525 In cfg gimple, if you do not have a selection expression, operands
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
526 1 and 2 are NULL. The operands are then taken from the cfg edges. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
527 DEFTREECODE (COND_EXPR, "cond_expr", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
528
131
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mir3636
parents: 111
diff changeset
529 /* Represents a vector in which every element is equal to operand 0. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
530 DEFTREECODE (VEC_DUPLICATE_EXPR, "vec_duplicate_expr", tcc_unary, 1)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
531
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
532 /* Vector series created from a start (base) value and a step.
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
533
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
534 A = VEC_SERIES_EXPR (B, C)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
535
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
536 means
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
537
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
538 for (i = 0; i < N; i++)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
539 A[i] = B + C * i; */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
540 DEFTREECODE (VEC_SERIES_EXPR, "vec_series_expr", tcc_binary, 2)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
541
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
542 /* Vector conditional expression. It is like COND_EXPR, but with
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
543 vector operands.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
544
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
545 A = VEC_COND_EXPR ( X < Y, B, C)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
546
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
547 means
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
548
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
549 for (i=0; i<N; i++)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
550 A[i] = X[i] < Y[i] ? B[i] : C[i];
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
551 */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
552 DEFTREECODE (VEC_COND_EXPR, "vec_cond_expr", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
553
111
kono
parents: 67
diff changeset
554 /* Vector permutation expression. A = VEC_PERM_EXPR<v0, v1, mask> means
kono
parents: 67
diff changeset
555
kono
parents: 67
diff changeset
556 N = length(mask)
kono
parents: 67
diff changeset
557 foreach i in N:
kono
parents: 67
diff changeset
558 M = mask[i] % (2*N)
kono
parents: 67
diff changeset
559 A = M < N ? v0[M] : v1[M-N]
kono
parents: 67
diff changeset
560
kono
parents: 67
diff changeset
561 V0 and V1 are vectors of the same type. MASK is an integer-typed
kono
parents: 67
diff changeset
562 vector. The number of MASK elements must be the same with the
kono
parents: 67
diff changeset
563 number of elements in V0 and V1. The size of the inner type
kono
parents: 67
diff changeset
564 of the MASK and of the V0 and V1 must be the same.
kono
parents: 67
diff changeset
565 */
kono
parents: 67
diff changeset
566 DEFTREECODE (VEC_PERM_EXPR, "vec_perm_expr", tcc_expression, 3)
kono
parents: 67
diff changeset
567
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
568 /* Declare local variables, including making RTL and allocating space.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
569 BIND_EXPR_VARS is a chain of VAR_DECL nodes for the variables.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
570 BIND_EXPR_BODY is the body, the expression to be computed using
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
571 the variables. The value of operand 1 becomes that of the BIND_EXPR.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
572 BIND_EXPR_BLOCK is the BLOCK that corresponds to these bindings
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
573 for debugging purposes. If this BIND_EXPR is actually expanded,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
574 that sets the TREE_USED flag in the BLOCK.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
575
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
576 The BIND_EXPR is not responsible for informing parsers
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
577 about these variables. If the body is coming from the input file,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
578 then the code that creates the BIND_EXPR is also responsible for
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
579 informing the parser of the variables.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
580
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
581 If the BIND_EXPR is ever expanded, its TREE_USED flag is set.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
582 This tells the code for debugging symbol tables not to ignore the BIND_EXPR.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
583 If the BIND_EXPR should be output for debugging but will not be expanded,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
584 set the TREE_USED flag by hand.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
585
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
586 In order for the BIND_EXPR to be known at all, the code that creates it
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
587 must also install it as a subblock in the tree of BLOCK
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
588 nodes for the function. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
589 DEFTREECODE (BIND_EXPR, "bind_expr", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
590
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
591 /* Function call. CALL_EXPRs are represented by variably-sized expression
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
592 nodes. There are at least three fixed operands. Operand 0 is an
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
593 INTEGER_CST node containing the total operand count, the number of
111
kono
parents: 67
diff changeset
594 arguments plus 3. Operand 1 is the function or NULL, while operand 2 is
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
595 is static chain argument, or NULL. The remaining operands are the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
596 arguments to the call. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
597 DEFTREECODE (CALL_EXPR, "call_expr", tcc_vl_exp, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
598
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
599 /* Specify a value to compute along with its corresponding cleanup.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
600 Operand 0 is the cleanup expression.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
601 The cleanup is executed by the first enclosing CLEANUP_POINT_EXPR,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
602 which must exist. This differs from TRY_CATCH_EXPR in that operand 1
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
603 is always evaluated when cleanups are run. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
604 DEFTREECODE (WITH_CLEANUP_EXPR, "with_cleanup_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
605
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
606 /* Specify a cleanup point.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
607 Operand 0 is an expression that may have cleanups. If it does, those
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
608 cleanups are executed after the expression is expanded.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
609
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
610 Note that if the expression is a reference to storage, it is forced out
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
611 of memory before the cleanups are run. This is necessary to handle
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
612 cases where the cleanups modify the storage referenced; in the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
613 expression 't.i', if 't' is a struct with an integer member 'i' and a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
614 cleanup which modifies 'i', the value of the expression depends on
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
615 whether the cleanup is run before or after 't.i' is evaluated. When
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
616 expand_expr is run on 't.i', it returns a MEM. This is not good enough;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
617 the value of 't.i' must be forced out of memory.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
618
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
619 As a consequence, the operand of a CLEANUP_POINT_EXPR must not have
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
620 BLKmode, because it will not be forced out of memory. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
621 DEFTREECODE (CLEANUP_POINT_EXPR, "cleanup_point_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
622
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
623 /* The following code is used in languages that have types where some
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
624 field in an object of the type contains a value that is used in the
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
625 computation of another field's offset or size and/or the size of the
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
626 type. The positions and/or sizes of fields can vary from object to
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
627 object of the same type or even for one and the same object within
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
628 its scope.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
629
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
630 Record types with discriminants in Ada are
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
631 examples of such types. This mechanism is also used to create "fat
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
632 pointers" for unconstrained array types in Ada; the fat pointer is a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
633 structure one of whose fields is a pointer to the actual array type
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
634 and the other field is a pointer to a template, which is a structure
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
635 containing the bounds of the array. The bounds in the type pointed
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
636 to by the first field in the fat pointer refer to the values in the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
637 template.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
638
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
639 When you wish to construct such a type you need "self-references"
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
640 that allow you to reference the object having this type from the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
641 TYPE node, i.e. without having a variable instantiating this type.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
642
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
643 Such a "self-references" is done using a PLACEHOLDER_EXPR. This is
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
644 a node that will later be replaced with the object being referenced.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
645 Its type is that of the object and selects which object to use from
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
646 a chain of references (see below). No other slots are used in the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
647 PLACEHOLDER_EXPR.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
648
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
649 For example, if your type FOO is a RECORD_TYPE with a field BAR,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
650 and you need the value of <variable>.BAR to calculate TYPE_SIZE
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
651 (FOO), just substitute <variable> above with a PLACEHOLDER_EXPR
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
652 whose TREE_TYPE is FOO. Then construct your COMPONENT_REF with
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
653 the PLACEHOLDER_EXPR as the first operand (which has the correct
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
654 type). Later, when the size is needed in the program, the back-end
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
655 will find this PLACEHOLDER_EXPR and generate code to calculate the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
656 actual size at run-time. In the following, we describe how this
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
657 calculation is done.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
658
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
659 When we wish to evaluate a size or offset, we check whether it contains a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
660 PLACEHOLDER_EXPR. If it does, we call substitute_placeholder_in_expr
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
661 passing both that tree and an expression within which the object may be
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
662 found. The latter expression is the object itself in the simple case of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
663 an Ada record with discriminant, but it can be the array in the case of an
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
664 unconstrained array.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
665
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
666 In the latter case, we need the fat pointer, because the bounds of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
667 the array can only be accessed from it. However, we rely here on the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
668 fact that the expression for the array contains the dereference of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
669 the fat pointer that obtained the array pointer. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
670
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
671 /* Denotes a record to later be substituted before evaluating this expression.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
672 The type of this expression is used to find the record to replace it. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
673 DEFTREECODE (PLACEHOLDER_EXPR, "placeholder_expr", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
674
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
675 /* Simple arithmetic. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
676 DEFTREECODE (PLUS_EXPR, "plus_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
677 DEFTREECODE (MINUS_EXPR, "minus_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
678 DEFTREECODE (MULT_EXPR, "mult_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
679
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
680 /* Pointer addition. The first operand is always a pointer and the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
681 second operand is an integer of type sizetype. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
682 DEFTREECODE (POINTER_PLUS_EXPR, "pointer_plus_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
683
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
684 /* Pointer subtraction. The two arguments are pointers, and the result
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
685 is a signed integer of the same precision. Pointers are interpreted
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
686 as unsigned, the difference is computed as if in infinite signed
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
687 precision. Behavior is undefined if the difference does not fit in
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
688 the result type. The result does not depend on the pointer type,
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
689 it is not divided by the size of the pointed-to type. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
690 DEFTREECODE (POINTER_DIFF_EXPR, "pointer_diff_expr", tcc_binary, 2)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
691
111
kono
parents: 67
diff changeset
692 /* Highpart multiplication. For an integral type with precision B,
kono
parents: 67
diff changeset
693 returns bits [2B-1, B] of the full 2*B product. */
kono
parents: 67
diff changeset
694 DEFTREECODE (MULT_HIGHPART_EXPR, "mult_highpart_expr", tcc_binary, 2)
kono
parents: 67
diff changeset
695
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
696 /* Division for integer result that rounds the quotient toward zero. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
697 DEFTREECODE (TRUNC_DIV_EXPR, "trunc_div_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
698
111
kono
parents: 67
diff changeset
699 /* Division for integer result that rounds it toward plus infinity. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
700 DEFTREECODE (CEIL_DIV_EXPR, "ceil_div_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
701
111
kono
parents: 67
diff changeset
702 /* Division for integer result that rounds it toward minus infinity. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
703 DEFTREECODE (FLOOR_DIV_EXPR, "floor_div_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
704
111
kono
parents: 67
diff changeset
705 /* Division for integer result that rounds it toward nearest integer. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
706 DEFTREECODE (ROUND_DIV_EXPR, "round_div_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
707
111
kono
parents: 67
diff changeset
708 /* Four kinds of remainder that go with the four kinds of division: */
kono
parents: 67
diff changeset
709
kono
parents: 67
diff changeset
710 /* The sign of the remainder is that of the dividend. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
711 DEFTREECODE (TRUNC_MOD_EXPR, "trunc_mod_expr", tcc_binary, 2)
111
kono
parents: 67
diff changeset
712
kono
parents: 67
diff changeset
713 /* The sign of the remainder is the opposite of that of the divisor. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
714 DEFTREECODE (CEIL_MOD_EXPR, "ceil_mod_expr", tcc_binary, 2)
111
kono
parents: 67
diff changeset
715
kono
parents: 67
diff changeset
716 /* The sign of the remainder is that of the divisor. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
717 DEFTREECODE (FLOOR_MOD_EXPR, "floor_mod_expr", tcc_binary, 2)
111
kono
parents: 67
diff changeset
718
kono
parents: 67
diff changeset
719 /* The sign of the remainder is not predictable. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
720 DEFTREECODE (ROUND_MOD_EXPR, "round_mod_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
721
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
722 /* Division for real result. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
723 DEFTREECODE (RDIV_EXPR, "rdiv_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
724
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
725 /* Division which is not supposed to need rounding.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
726 Used for pointer subtraction in C. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
727 DEFTREECODE (EXACT_DIV_EXPR, "exact_div_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
728
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
729 /* Conversion of real to fixed point by truncation. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
730 DEFTREECODE (FIX_TRUNC_EXPR, "fix_trunc_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
731
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
732 /* Conversion of an integer to a real. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
733 DEFTREECODE (FLOAT_EXPR, "float_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
734
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
735 /* Unary negation. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
736 DEFTREECODE (NEGATE_EXPR, "negate_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
737
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
738 /* Minimum and maximum values. When used with floating point, if both
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
739 operands are zeros, or if either operand is NaN, then it is unspecified
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
740 which of the two operands is returned as the result. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
741 DEFTREECODE (MIN_EXPR, "min_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
742 DEFTREECODE (MAX_EXPR, "max_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
743
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
744 /* Represents the absolute value of the operand.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
745
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
746 An ABS_EXPR must have either an INTEGER_TYPE or a REAL_TYPE. The
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
747 operand of the ABS_EXPR must have the same type. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
748 DEFTREECODE (ABS_EXPR, "abs_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
749
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
750 /* Represents the unsigned absolute value of the operand.
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
751 An ABSU_EXPR must have unsigned INTEGER_TYPE. The operand of the ABSU_EXPR
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
752 must have the corresponding signed type. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
753 DEFTREECODE (ABSU_EXPR, "absu_expr", tcc_unary, 1)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
754
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
755 /* Shift operations for shift and rotate.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
756 Shift means logical shift if done on an
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
757 unsigned type, arithmetic shift if done on a signed type.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
758 The second operand is the number of bits to
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
759 shift by; it need not be the same type as the first operand and result.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
760 Note that the result is undefined if the second operand is larger
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
761 than or equal to the first operand's type size.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
762
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
763 The first operand of a shift can have either an integer or a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
764 (non-integer) fixed-point type. We follow the ISO/IEC TR 18037:2004
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
765 semantics for the latter.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
766
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
767 Rotates are defined for integer types only. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
768 DEFTREECODE (LSHIFT_EXPR, "lshift_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
769 DEFTREECODE (RSHIFT_EXPR, "rshift_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
770 DEFTREECODE (LROTATE_EXPR, "lrotate_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
771 DEFTREECODE (RROTATE_EXPR, "rrotate_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
772
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
773 /* Bitwise operations. Operands have same mode as result. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
774 DEFTREECODE (BIT_IOR_EXPR, "bit_ior_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
775 DEFTREECODE (BIT_XOR_EXPR, "bit_xor_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
776 DEFTREECODE (BIT_AND_EXPR, "bit_and_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
777 DEFTREECODE (BIT_NOT_EXPR, "bit_not_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
778
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
779 /* ANDIF and ORIF allow the second operand not to be computed if the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
780 value of the expression is determined from the first operand. AND,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
781 OR, and XOR always compute the second operand whether its value is
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
782 needed or not (for side effects). The operand may have
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
783 BOOLEAN_TYPE or INTEGER_TYPE. In either case, the argument will be
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
784 either zero or one. For example, a TRUTH_NOT_EXPR will never have
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
785 an INTEGER_TYPE VAR_DECL as its argument; instead, a NE_EXPR will be
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
786 used to compare the VAR_DECL to zero, thereby obtaining a node with
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
787 value zero or one. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
788 DEFTREECODE (TRUTH_ANDIF_EXPR, "truth_andif_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
789 DEFTREECODE (TRUTH_ORIF_EXPR, "truth_orif_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
790 DEFTREECODE (TRUTH_AND_EXPR, "truth_and_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
791 DEFTREECODE (TRUTH_OR_EXPR, "truth_or_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
792 DEFTREECODE (TRUTH_XOR_EXPR, "truth_xor_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
793 DEFTREECODE (TRUTH_NOT_EXPR, "truth_not_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
794
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
795 /* Relational operators.
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
796 EQ_EXPR and NE_EXPR are allowed for any types. The others, except for
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
797 LTGT_EXPR, are allowed only for integral, floating-point and vector types.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
798 LTGT_EXPR is allowed only for floating-point types.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
799 For floating-point operators, if either operand is a NaN, then NE_EXPR
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
800 returns true and the remaining operators return false. The operators
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
801 other than EQ_EXPR and NE_EXPR may generate an exception on quiet NaNs.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
802 In all cases the operands will have the same type,
111
kono
parents: 67
diff changeset
803 and the value is either the type used by the language for booleans
kono
parents: 67
diff changeset
804 or an integer vector type of the same size and with the same number
kono
parents: 67
diff changeset
805 of elements as the comparison operands. True for a vector of
kono
parents: 67
diff changeset
806 comparison results has all bits set while false is equal to zero. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
807 DEFTREECODE (LT_EXPR, "lt_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
808 DEFTREECODE (LE_EXPR, "le_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
809 DEFTREECODE (GT_EXPR, "gt_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
810 DEFTREECODE (GE_EXPR, "ge_expr", tcc_comparison, 2)
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
811 DEFTREECODE (LTGT_EXPR, "ltgt_expr", tcc_comparison, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
812 DEFTREECODE (EQ_EXPR, "eq_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
813 DEFTREECODE (NE_EXPR, "ne_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
814
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
815 /* Additional relational operators for floating-point unordered. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
816 DEFTREECODE (UNORDERED_EXPR, "unordered_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
817 DEFTREECODE (ORDERED_EXPR, "ordered_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
818
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
819 /* These are equivalent to unordered or ... */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
820 DEFTREECODE (UNLT_EXPR, "unlt_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
821 DEFTREECODE (UNLE_EXPR, "unle_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
822 DEFTREECODE (UNGT_EXPR, "ungt_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
823 DEFTREECODE (UNGE_EXPR, "unge_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
824 DEFTREECODE (UNEQ_EXPR, "uneq_expr", tcc_comparison, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
825
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
826 DEFTREECODE (RANGE_EXPR, "range_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
827
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
828 /* Represents a re-association barrier for floating point expressions
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
829 like explicit parenthesis in fortran. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
830 DEFTREECODE (PAREN_EXPR, "paren_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
831
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
832 /* Represents a conversion of type of a value.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
833 All conversions, including implicit ones, must be
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
834 represented by CONVERT_EXPR or NOP_EXPR nodes. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
835 DEFTREECODE (CONVERT_EXPR, "convert_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
836
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
837 /* Conversion of a pointer value to a pointer to a different
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
838 address space. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
839 DEFTREECODE (ADDR_SPACE_CONVERT_EXPR, "addr_space_convert_expr", tcc_unary, 1)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
840
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
841 /* Conversion of a fixed-point value to an integer, a real, or a fixed-point
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
842 value. Or conversion of a fixed-point value from an integer, a real, or
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
843 a fixed-point value. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
844 DEFTREECODE (FIXED_CONVERT_EXPR, "fixed_convert_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
845
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
846 /* Represents a conversion expected to require no code to be generated. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
847 DEFTREECODE (NOP_EXPR, "nop_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
848
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
849 /* Value is same as argument, but guaranteed not an lvalue. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
850 DEFTREECODE (NON_LVALUE_EXPR, "non_lvalue_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
851
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
852 /* A COMPOUND_LITERAL_EXPR represents a literal that is placed in a DECL. The
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
853 COMPOUND_LITERAL_EXPR_DECL_EXPR is the a DECL_EXPR containing the decl
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
854 for the anonymous object represented by the COMPOUND_LITERAL;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
855 the DECL_INITIAL of that decl is the CONSTRUCTOR that initializes
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
856 the compound literal. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
857 DEFTREECODE (COMPOUND_LITERAL_EXPR, "compound_literal_expr", tcc_expression, 1)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
858
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
859 /* Represents something we computed once and will use multiple times.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
860 First operand is that expression. After it is evaluated once, it
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
861 will be replaced by the temporary variable that holds the value. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
862 DEFTREECODE (SAVE_EXPR, "save_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
863
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
864 /* & in C. Value is the address at which the operand's value resides.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
865 Operand may have any mode. Result mode is Pmode. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
866 DEFTREECODE (ADDR_EXPR, "addr_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
867
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
868 /* Operand0 is a function constant; result is part N of a function
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
869 descriptor of type ptr_mode. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
870 DEFTREECODE (FDESC_EXPR, "fdesc_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
871
111
kono
parents: 67
diff changeset
872 /* Given a container value, a replacement value and a bit position within
kono
parents: 67
diff changeset
873 the container, produce the value that results from replacing the part of
kono
parents: 67
diff changeset
874 the container starting at the bit position with the replacement value.
kono
parents: 67
diff changeset
875 Operand 0 is a tree for the container value of integral or vector type;
kono
parents: 67
diff changeset
876 Operand 1 is a tree for the replacement value of another integral or
kono
parents: 67
diff changeset
877 the vector element type;
kono
parents: 67
diff changeset
878 Operand 2 is a tree giving the constant bit position;
kono
parents: 67
diff changeset
879 The number of bits replaced is given by the precision of the type of the
kono
parents: 67
diff changeset
880 replacement value if it is integral or by its size if it is non-integral.
kono
parents: 67
diff changeset
881 ??? The reason to make the size of the replacement implicit is to avoid
kono
parents: 67
diff changeset
882 introducing a quaternary operation.
kono
parents: 67
diff changeset
883 The replaced bits shall be fully inside the container. If the container
kono
parents: 67
diff changeset
884 is of vector type, then these bits shall be aligned with its elements. */
kono
parents: 67
diff changeset
885 DEFTREECODE (BIT_INSERT_EXPR, "bit_insert_expr", tcc_expression, 3)
kono
parents: 67
diff changeset
886
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
887 /* Given two real or integer operands of the same type,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
888 returns a complex value of the corresponding complex type. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
889 DEFTREECODE (COMPLEX_EXPR, "complex_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
890
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
891 /* Complex conjugate of operand. Used only on complex types. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
892 DEFTREECODE (CONJ_EXPR, "conj_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
893
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
894 /* Nodes for ++ and -- in C.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
895 The second arg is how much to increment or decrement by.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
896 For a pointer, it would be the size of the object pointed to. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
897 DEFTREECODE (PREDECREMENT_EXPR, "predecrement_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
898 DEFTREECODE (PREINCREMENT_EXPR, "preincrement_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
899 DEFTREECODE (POSTDECREMENT_EXPR, "postdecrement_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
900 DEFTREECODE (POSTINCREMENT_EXPR, "postincrement_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
901
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
902 /* Used to implement `va_arg'. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
903 DEFTREECODE (VA_ARG_EXPR, "va_arg_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
904
111
kono
parents: 67
diff changeset
905 /* Evaluate operand 0. If and only if an exception is thrown during
kono
parents: 67
diff changeset
906 the evaluation of operand 0, evaluate operand 1.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
907
111
kono
parents: 67
diff changeset
908 This differs from TRY_FINALLY_EXPR in that operand 1 is not evaluated
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
909 on a normal or jump exit, only on an exception. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
910 DEFTREECODE (TRY_CATCH_EXPR, "try_catch_expr", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
911
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
912 /* Evaluate the first operand.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
913 The second operand is a cleanup expression which is evaluated
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
914 on any exit (normal, exception, or jump out) from this expression. */
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
915 DEFTREECODE (TRY_FINALLY_EXPR, "try_finally_expr", tcc_statement, 2)
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
916
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
917 /* Evaluate either the normal or the exceptional cleanup. This must
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
918 only be present as the cleanup expression in a TRY_FINALLY_EXPR.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
919 If the TRY_FINALLY_EXPR completes normally, the first operand of
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
920 EH_ELSE_EXPR is used as a cleanup, otherwise the second operand is
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
921 used. */
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
922 DEFTREECODE (EH_ELSE_EXPR, "eh_else_expr", tcc_statement, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
923
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
924 /* These types of expressions have no useful value,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
925 and always have side effects. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
926
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
927 /* Used to represent a local declaration. The operand is DECL_EXPR_DECL. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
928 DEFTREECODE (DECL_EXPR, "decl_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
929
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
930 /* A label definition, encapsulated as a statement.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
931 Operand 0 is the LABEL_DECL node for the label that appears here.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
932 The type should be void and the value should be ignored. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
933 DEFTREECODE (LABEL_EXPR, "label_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
934
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
935 /* GOTO. Operand 0 is a LABEL_DECL node or an expression.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
936 The type should be void and the value should be ignored. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
937 DEFTREECODE (GOTO_EXPR, "goto_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
938
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
939 /* RETURN. Evaluates operand 0, then returns from the current function.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
940 Presumably that operand is an assignment that stores into the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
941 RESULT_DECL that hold the value to be returned.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
942 The operand may be null.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
943 The type should be void and the value should be ignored. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
944 DEFTREECODE (RETURN_EXPR, "return_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
945
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
946 /* Exit the inner most loop conditionally. Operand 0 is the condition.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
947 The type should be void and the value should be ignored. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
948 DEFTREECODE (EXIT_EXPR, "exit_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
949
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
950 /* A loop. Operand 0 is the body of the loop.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
951 It must contain an EXIT_EXPR or is an infinite loop.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
952 The type should be void and the value should be ignored. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
953 DEFTREECODE (LOOP_EXPR, "loop_expr", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
954
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
955 /* Switch expression.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
956
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
957 TREE_TYPE is the original type of the condition, before any
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
958 language required type conversions. It may be NULL, in which case
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
959 the original type and final types are assumed to be the same.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
960
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
961 Operand 0 is the expression used to perform the branch,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
962 Operand 1 is the body of the switch, which probably contains
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
963 CASE_LABEL_EXPRs. It may also be NULL, in which case operand 2
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
964 must not be NULL. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
965 DEFTREECODE (SWITCH_EXPR, "switch_expr", tcc_statement, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
966
111
kono
parents: 67
diff changeset
967 /* Used to represent a case label.
kono
parents: 67
diff changeset
968
kono
parents: 67
diff changeset
969 Operand 0 is CASE_LOW. It may be NULL_TREE, in which case the label
kono
parents: 67
diff changeset
970 is a 'default' label.
kono
parents: 67
diff changeset
971 Operand 1 is CASE_HIGH. If it is NULL_TREE, the label is a simple
kono
parents: 67
diff changeset
972 (one-value) case label. If it is non-NULL_TREE, the case is a range.
kono
parents: 67
diff changeset
973 Operand 2 is CASE_LABEL, which is is the corresponding LABEL_DECL.
kono
parents: 67
diff changeset
974 Operand 3 is CASE_CHAIN. This operand is only used in tree-cfg.c to
kono
parents: 67
diff changeset
975 speed up the lookup of case labels which use a particular edge in
kono
parents: 67
diff changeset
976 the control flow graph. */
kono
parents: 67
diff changeset
977 DEFTREECODE (CASE_LABEL_EXPR, "case_label_expr", tcc_statement, 4)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
978
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
979 /* Used to represent an inline assembly statement. ASM_STRING returns a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
980 STRING_CST for the instruction (e.g., "mov x, y"). ASM_OUTPUTS,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
981 ASM_INPUTS, and ASM_CLOBBERS represent the outputs, inputs, and clobbers
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
982 for the statement. ASM_LABELS, if present, indicates various destinations
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
983 for the asm; labels cannot be combined with outputs. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
984 DEFTREECODE (ASM_EXPR, "asm_expr", tcc_statement, 5)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
985
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
986 /* Variable references for SSA analysis. New SSA names are created every
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
987 time a variable is assigned a new value. The SSA builder uses SSA_NAME
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
988 nodes to implement SSA versioning. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
989 DEFTREECODE (SSA_NAME, "ssa_name", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
990
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
991 /* Used to represent a typed exception handler. CATCH_TYPES is the type (or
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
992 list of types) handled, and CATCH_BODY is the code for the handler. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
993 DEFTREECODE (CATCH_EXPR, "catch_expr", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
994
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
995 /* Used to represent an exception specification. EH_FILTER_TYPES is a list
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
996 of allowed types, and EH_FILTER_FAILURE is an expression to evaluate on
111
kono
parents: 67
diff changeset
997 failure. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
998 DEFTREECODE (EH_FILTER_EXPR, "eh_filter_expr", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
999
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1000 /* Node used for describing a property that is known at compile
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1001 time. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1002 DEFTREECODE (SCEV_KNOWN, "scev_known", tcc_expression, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1003
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1004 /* Node used for describing a property that is not known at compile
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1005 time. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1006 DEFTREECODE (SCEV_NOT_KNOWN, "scev_not_known", tcc_expression, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1007
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1008 /* Polynomial chains of recurrences.
111
kono
parents: 67
diff changeset
1009 cr = {CHREC_LEFT (cr), +, CHREC_RIGHT (cr)}_CHREC_VARIABLE (cr). */
kono
parents: 67
diff changeset
1010 DEFTREECODE (POLYNOMIAL_CHREC, "polynomial_chrec", tcc_expression, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1011
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1012 /* Used to chain children of container statements together.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1013 Use the interface in tree-iterator.h to access this node. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1014 DEFTREECODE (STATEMENT_LIST, "statement_list", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1015
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1016 /* Predicate assertion. Artificial expression generated by the optimizers
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1017 to keep track of predicate values. This expression may only appear on
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1018 the RHS of assignments.
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1019
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1020 Given X = ASSERT_EXPR <Y, EXPR>, the optimizers can infer
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1021 two things:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1022
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1023 1- X is a copy of Y.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1024 2- EXPR is a conditional expression and is known to be true.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1025
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1026 Valid and to be expected forms of conditional expressions are
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1027 valid GIMPLE conditional expressions (as defined by is_gimple_condexpr)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1028 and conditional expressions with the first operand being a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1029 PLUS_EXPR with a variable possibly wrapped in a NOP_EXPR first
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1030 operand and an integer constant second operand.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1031
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1032 The type of the expression is the same as Y. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1033 DEFTREECODE (ASSERT_EXPR, "assert_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1034
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1035 /* Base class information. Holds information about a class as a
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1036 baseclass of itself or another class. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1037 DEFTREECODE (TREE_BINFO, "tree_binfo", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1038
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1039 /* Records the size for an expression of variable size type. This is
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1040 for use in contexts in which we are accessing the entire object,
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1041 such as for a function call, or block copy.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1042 Operand 0 is the real expression.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1043 Operand 1 is the size of the type in the expression. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1044 DEFTREECODE (WITH_SIZE_EXPR, "with_size_expr", tcc_expression, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1045
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1046 /* Extract elements from two input vectors Operand 0 and Operand 1
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1047 size VS, according to the offset OFF defined by Operand 2 as
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1048 follows:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1049 If OFF > 0, the last VS - OFF elements of vector OP0 are concatenated to
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1050 the first OFF elements of the vector OP1.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1051 If OFF == 0, then the returned vector is OP1.
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1052 On different targets OFF may take different forms; It can be an address, in
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1053 which case its low log2(VS)-1 bits define the offset, or it can be a mask
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1054 generated by the builtin targetm.vectorize.mask_for_load_builtin_decl. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1055 DEFTREECODE (REALIGN_LOAD_EXPR, "realign_load", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1056
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1057 /* Low-level memory addressing. Operands are BASE (address of static or
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1058 global variable or register), OFFSET (integer constant),
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1059 INDEX (register), STEP (integer constant), INDEX2 (register),
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1060 The corresponding address is BASE + STEP * INDEX + INDEX2 + OFFSET.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1061 Only variations and values valid on the target are allowed.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1062
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1063 The type of STEP, INDEX and INDEX2 is sizetype.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1064
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1065 The type of BASE is a pointer type. If BASE is not an address of
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1066 a static or global variable INDEX2 will be NULL.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1067
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1068 The type of OFFSET is a pointer type and determines TBAA the same as
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1069 the constant offset operand in MEM_REF. */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1070
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1071 DEFTREECODE (TARGET_MEM_REF, "target_mem_ref", tcc_reference, 5)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1072
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1073 /* Memory addressing. Operands are a pointer and a tree constant integer
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1074 byte offset of the pointer type that when dereferenced yields the
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1075 type of the base object the pointer points into and which is used for
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1076 TBAA purposes.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1077 The type of the MEM_REF is the type the bytes at the memory location
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1078 are interpreted as.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1079 MEM_REF <p, c> is equivalent to ((typeof(c))p)->x... where x... is a
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1080 chain of component references offsetting p by c. */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1081 DEFTREECODE (MEM_REF, "mem_ref", tcc_reference, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1082
111
kono
parents: 67
diff changeset
1083 /* OpenACC and OpenMP. As it is exposed in TREE_RANGE_CHECK invocations, do
kono
parents: 67
diff changeset
1084 not change the ordering of these codes. */
kono
parents: 67
diff changeset
1085
kono
parents: 67
diff changeset
1086 /* OpenACC - #pragma acc parallel [clause1 ... clauseN]
kono
parents: 67
diff changeset
1087 Operand 0: OMP_BODY: Code to be executed in parallel.
kono
parents: 67
diff changeset
1088 Operand 1: OMP_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1089
kono
parents: 67
diff changeset
1090 DEFTREECODE (OACC_PARALLEL, "oacc_parallel", tcc_statement, 2)
kono
parents: 67
diff changeset
1091
kono
parents: 67
diff changeset
1092 /* OpenACC - #pragma acc kernels [clause1 ... clauseN]
kono
parents: 67
diff changeset
1093 Operand 0: OMP_BODY: Sequence of kernels.
kono
parents: 67
diff changeset
1094 Operand 1: OMP_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1095
kono
parents: 67
diff changeset
1096 DEFTREECODE (OACC_KERNELS, "oacc_kernels", tcc_statement, 2)
kono
parents: 67
diff changeset
1097
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1098 /* OpenACC - #pragma acc serial [clause1 ... clauseN]
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1099 Operand 0: OMP_BODY: Code to be executed sequentially.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1100 Operand 1: OMP_CLAUSES: List of clauses. */
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1101
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1102 DEFTREECODE (OACC_SERIAL, "oacc_serial", tcc_statement, 2)
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1103
111
kono
parents: 67
diff changeset
1104 /* OpenACC - #pragma acc data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1105 Operand 0: OACC_DATA_BODY: Data construct body.
kono
parents: 67
diff changeset
1106 Operand 1: OACC_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1107
kono
parents: 67
diff changeset
1108 DEFTREECODE (OACC_DATA, "oacc_data", tcc_statement, 2)
kono
parents: 67
diff changeset
1109
kono
parents: 67
diff changeset
1110 /* OpenACC - #pragma acc host_data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1111 Operand 0: OACC_HOST_DATA_BODY: Host_data construct body.
kono
parents: 67
diff changeset
1112 Operand 1: OACC_HOST_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1113
kono
parents: 67
diff changeset
1114 DEFTREECODE (OACC_HOST_DATA, "oacc_host_data", tcc_statement, 2)
kono
parents: 67
diff changeset
1115
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1116 /* OpenMP - #pragma omp parallel [clause1 ... clauseN]
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1117 Operand 0: OMP_PARALLEL_BODY: Code to be executed by all threads.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1118 Operand 1: OMP_PARALLEL_CLAUSES: List of clauses. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1119
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1120 DEFTREECODE (OMP_PARALLEL, "omp_parallel", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1121
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1122 /* OpenMP - #pragma omp task [clause1 ... clauseN]
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1123 Operand 0: OMP_TASK_BODY: Code to be executed by all threads.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1124 Operand 1: OMP_TASK_CLAUSES: List of clauses. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1125
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1126 DEFTREECODE (OMP_TASK, "omp_task", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1127
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1128 /* OpenMP - #pragma omp for [clause1 ... clauseN]
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1129 Operand 0: OMP_FOR_BODY: Loop body.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1130 Operand 1: OMP_FOR_CLAUSES: List of clauses.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1131 Operand 2: OMP_FOR_INIT: Initialization code of the form
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1132 VAR = N1.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1133 Operand 3: OMP_FOR_COND: Loop conditional expression of the form
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1134 VAR { <, >, <=, >= } N2.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1135 Operand 4: OMP_FOR_INCR: Loop index increment of the form
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1136 VAR { +=, -= } INCR.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1137 Operand 5: OMP_FOR_PRE_BODY: Filled by the gimplifier with things
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1138 from INIT, COND, and INCR that are technically part of the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1139 OMP_FOR structured block, but are evaluated before the loop
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1140 body begins.
111
kono
parents: 67
diff changeset
1141 Operand 6: OMP_FOR_ORIG_DECLS: If non-NULL, list of DECLs initialized
kono
parents: 67
diff changeset
1142 in OMP_FOR_INIT. In some cases, like C++ iterators, the original
kono
parents: 67
diff changeset
1143 DECL init has been lost in gimplification and now contains a
kono
parents: 67
diff changeset
1144 temporary (D.nnnn). This list contains the original DECLs in
kono
parents: 67
diff changeset
1145 the source.
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1146
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1147 VAR must be an integer or pointer variable, which is implicitly thread
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1148 private. N1, N2 and INCR are required to be loop invariant integer
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1149 expressions that are evaluated without any synchronization.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1150 The evaluation order, frequency of evaluation and side-effects are
111
kono
parents: 67
diff changeset
1151 unspecified by the standards. */
kono
parents: 67
diff changeset
1152 DEFTREECODE (OMP_FOR, "omp_for", tcc_statement, 7)
kono
parents: 67
diff changeset
1153
kono
parents: 67
diff changeset
1154 /* OpenMP - #pragma omp simd [clause1 ... clauseN]
kono
parents: 67
diff changeset
1155 Operands like for OMP_FOR. */
kono
parents: 67
diff changeset
1156 DEFTREECODE (OMP_SIMD, "omp_simd", tcc_statement, 7)
kono
parents: 67
diff changeset
1157
kono
parents: 67
diff changeset
1158 /* OpenMP - #pragma omp distribute [clause1 ... clauseN]
kono
parents: 67
diff changeset
1159 Operands like for OMP_FOR. */
kono
parents: 67
diff changeset
1160 DEFTREECODE (OMP_DISTRIBUTE, "omp_distribute", tcc_statement, 7)
kono
parents: 67
diff changeset
1161
kono
parents: 67
diff changeset
1162 /* OpenMP - #pragma omp taskloop [clause1 ... clauseN]
kono
parents: 67
diff changeset
1163 Operands like for OMP_FOR. */
kono
parents: 67
diff changeset
1164 DEFTREECODE (OMP_TASKLOOP, "omp_taskloop", tcc_statement, 7)
kono
parents: 67
diff changeset
1165
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1166 /* OpenMP - #pragma omp loop [clause1 ... clauseN]
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1167 Operands like for OMP_FOR. */
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1168 DEFTREECODE (OMP_LOOP, "omp_loop", tcc_statement, 7)
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1169
111
kono
parents: 67
diff changeset
1170 /* OpenMP - #pragma acc loop [clause1 ... clauseN]
kono
parents: 67
diff changeset
1171 Operands like for OMP_FOR. */
kono
parents: 67
diff changeset
1172 DEFTREECODE (OACC_LOOP, "oacc_loop", tcc_statement, 7)
kono
parents: 67
diff changeset
1173
kono
parents: 67
diff changeset
1174 /* OpenMP - #pragma omp teams [clause1 ... clauseN]
kono
parents: 67
diff changeset
1175 Operand 0: OMP_TEAMS_BODY: Teams body.
kono
parents: 67
diff changeset
1176 Operand 1: OMP_TEAMS_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1177 DEFTREECODE (OMP_TEAMS, "omp_teams", tcc_statement, 2)
kono
parents: 67
diff changeset
1178
kono
parents: 67
diff changeset
1179 /* OpenMP - #pragma omp target data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1180 Operand 0: OMP_TARGET_DATA_BODY: Target data construct body.
kono
parents: 67
diff changeset
1181 Operand 1: OMP_TARGET_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1182 DEFTREECODE (OMP_TARGET_DATA, "omp_target_data", tcc_statement, 2)
kono
parents: 67
diff changeset
1183
kono
parents: 67
diff changeset
1184 /* OpenMP - #pragma omp target [clause1 ... clauseN]
kono
parents: 67
diff changeset
1185 Operand 0: OMP_TARGET_BODY: Target construct body.
kono
parents: 67
diff changeset
1186 Operand 1: OMP_TARGET_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1187 DEFTREECODE (OMP_TARGET, "omp_target", tcc_statement, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1188
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1189 /* OpenMP - #pragma omp sections [clause1 ... clauseN]
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1190 Operand 0: OMP_SECTIONS_BODY: Sections body.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1191 Operand 1: OMP_SECTIONS_CLAUSES: List of clauses. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1192 DEFTREECODE (OMP_SECTIONS, "omp_sections", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1193
111
kono
parents: 67
diff changeset
1194 /* OpenMP - #pragma omp ordered
kono
parents: 67
diff changeset
1195 Operand 0: OMP_ORDERED_BODY: Master section body.
kono
parents: 67
diff changeset
1196 Operand 1: OMP_ORDERED_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1197 DEFTREECODE (OMP_ORDERED, "omp_ordered", tcc_statement, 2)
kono
parents: 67
diff changeset
1198
kono
parents: 67
diff changeset
1199 /* OpenMP - #pragma omp critical [name]
kono
parents: 67
diff changeset
1200 Operand 0: OMP_CRITICAL_BODY: Critical section body.
kono
parents: 67
diff changeset
1201 Operand 1: OMP_CRITICAL_CLAUSES: List of clauses.
kono
parents: 67
diff changeset
1202 Operand 2: OMP_CRITICAL_NAME: Identifier for critical section. */
kono
parents: 67
diff changeset
1203 DEFTREECODE (OMP_CRITICAL, "omp_critical", tcc_statement, 3)
kono
parents: 67
diff changeset
1204
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1205 /* OpenMP - #pragma omp single
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1206 Operand 0: OMP_SINGLE_BODY: Single section body.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1207 Operand 1: OMP_SINGLE_CLAUSES: List of clauses. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1208 DEFTREECODE (OMP_SINGLE, "omp_single", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1209
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1210 /* OpenMP - #pragma omp taskgroup
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1211 Operand 0: OMP_TASKGROUP_BODY: Taskgroup body.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1212 Operand 1: OMP_SINGLE_CLAUSES: List of clauses. */
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1213 DEFTREECODE (OMP_TASKGROUP, "omp_taskgroup", tcc_statement, 2)
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1214
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1215 /* OpenMP - #pragma omp scan
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1216 Operand 0: OMP_SCAN_BODY: Scan body.
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1217 Operand 1: OMP_SCAN_CLAUSES: List of clauses. */
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1218 DEFTREECODE (OMP_SCAN, "omp_scan", tcc_statement, 2)
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1219
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1220 /* OpenMP - #pragma omp section
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1221 Operand 0: OMP_SECTION_BODY: Section body. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1222 DEFTREECODE (OMP_SECTION, "omp_section", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1223
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1224 /* OpenMP - #pragma omp master
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1225 Operand 0: OMP_MASTER_BODY: Master section body. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1226 DEFTREECODE (OMP_MASTER, "omp_master", tcc_statement, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1227
111
kono
parents: 67
diff changeset
1228 /* OpenACC - #pragma acc cache (variable1 ... variableN)
kono
parents: 67
diff changeset
1229 Operand 0: OACC_CACHE_CLAUSES: List of variables (transformed into
kono
parents: 67
diff changeset
1230 OMP_CLAUSE__CACHE_ clauses). */
kono
parents: 67
diff changeset
1231 DEFTREECODE (OACC_CACHE, "oacc_cache", tcc_statement, 1)
kono
parents: 67
diff changeset
1232
kono
parents: 67
diff changeset
1233 /* OpenACC - #pragma acc declare [clause1 ... clauseN]
kono
parents: 67
diff changeset
1234 Operand 0: OACC_DECLARE_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1235 DEFTREECODE (OACC_DECLARE, "oacc_declare", tcc_statement, 1)
kono
parents: 67
diff changeset
1236
kono
parents: 67
diff changeset
1237 /* OpenACC - #pragma acc enter data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1238 Operand 0: OACC_ENTER_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1239 DEFTREECODE (OACC_ENTER_DATA, "oacc_enter_data", tcc_statement, 1)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1240
111
kono
parents: 67
diff changeset
1241 /* OpenACC - #pragma acc exit data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1242 Operand 0: OACC_EXIT_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1243 DEFTREECODE (OACC_EXIT_DATA, "oacc_exit_data", tcc_statement, 1)
kono
parents: 67
diff changeset
1244
kono
parents: 67
diff changeset
1245 /* OpenACC - #pragma acc update [clause1 ... clauseN]
kono
parents: 67
diff changeset
1246 Operand 0: OACC_UPDATE_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1247 DEFTREECODE (OACC_UPDATE, "oacc_update", tcc_statement, 1)
kono
parents: 67
diff changeset
1248
kono
parents: 67
diff changeset
1249 /* OpenMP - #pragma omp target update [clause1 ... clauseN]
kono
parents: 67
diff changeset
1250 Operand 0: OMP_TARGET_UPDATE_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1251 DEFTREECODE (OMP_TARGET_UPDATE, "omp_target_update", tcc_statement, 1)
kono
parents: 67
diff changeset
1252
kono
parents: 67
diff changeset
1253 /* OpenMP - #pragma omp target enter data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1254 Operand 0: OMP_TARGET_ENTER_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1255 DEFTREECODE (OMP_TARGET_ENTER_DATA, "omp_target_enter_data", tcc_statement, 1)
kono
parents: 67
diff changeset
1256
kono
parents: 67
diff changeset
1257 /* OpenMP - #pragma omp target exit data [clause1 ... clauseN]
kono
parents: 67
diff changeset
1258 Operand 0: OMP_TARGET_EXIT_DATA_CLAUSES: List of clauses. */
kono
parents: 67
diff changeset
1259 DEFTREECODE (OMP_TARGET_EXIT_DATA, "omp_target_exit_data", tcc_statement, 1)
kono
parents: 67
diff changeset
1260
kono
parents: 67
diff changeset
1261 /* OMP_ATOMIC through OMP_ATOMIC_CAPTURE_NEW must be consecutive,
kono
parents: 67
diff changeset
1262 or OMP_ATOMIC_SEQ_CST needs adjusting. */
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1263
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1264 /* OpenMP - #pragma omp atomic
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1265 Operand 0: The address at which the atomic operation is to be performed.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1266 This address should be stabilized with save_expr.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1267 Operand 1: The expression to evaluate. When the old value of the object
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1268 at the address is used in the expression, it should appear as if
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1269 build_fold_indirect_ref of the address. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1270 DEFTREECODE (OMP_ATOMIC, "omp_atomic", tcc_statement, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1271
111
kono
parents: 67
diff changeset
1272 /* OpenMP - #pragma omp atomic read
kono
parents: 67
diff changeset
1273 Operand 0: The address at which the atomic operation is to be performed.
kono
parents: 67
diff changeset
1274 This address should be stabilized with save_expr. */
kono
parents: 67
diff changeset
1275 DEFTREECODE (OMP_ATOMIC_READ, "omp_atomic_read", tcc_statement, 1)
kono
parents: 67
diff changeset
1276
kono
parents: 67
diff changeset
1277 /* OpenMP - #pragma omp atomic capture
kono
parents: 67
diff changeset
1278 Operand 0: The address at which the atomic operation is to be performed.
kono
parents: 67
diff changeset
1279 This address should be stabilized with save_expr.
kono
parents: 67
diff changeset
1280 Operand 1: The expression to evaluate. When the old value of the object
kono
parents: 67
diff changeset
1281 at the address is used in the expression, it should appear as if
kono
parents: 67
diff changeset
1282 build_fold_indirect_ref of the address.
kono
parents: 67
diff changeset
1283 OMP_ATOMIC_CAPTURE_OLD returns the old memory content,
kono
parents: 67
diff changeset
1284 OMP_ATOMIC_CAPTURE_NEW the new value. */
kono
parents: 67
diff changeset
1285 DEFTREECODE (OMP_ATOMIC_CAPTURE_OLD, "omp_atomic_capture_old", tcc_statement, 2)
kono
parents: 67
diff changeset
1286 DEFTREECODE (OMP_ATOMIC_CAPTURE_NEW, "omp_atomic_capture_new", tcc_statement, 2)
kono
parents: 67
diff changeset
1287
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1288 /* OpenMP clauses. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1289 DEFTREECODE (OMP_CLAUSE, "omp_clause", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1290
111
kono
parents: 67
diff changeset
1291 /* TRANSACTION_EXPR tree code.
kono
parents: 67
diff changeset
1292 Operand 0: BODY: contains body of the transaction. */
kono
parents: 67
diff changeset
1293 DEFTREECODE (TRANSACTION_EXPR, "transaction_expr", tcc_expression, 1)
kono
parents: 67
diff changeset
1294
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1295 /* Widening dot-product.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1296 The first two arguments are of type t1.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1297 The third argument and the result are of type t2, such that t2 is at least
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1298 twice the size of t1. DOT_PROD_EXPR(arg1,arg2,arg3) is equivalent to:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1299 tmp = WIDEN_MULT_EXPR(arg1, arg2);
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1300 arg3 = PLUS_EXPR (tmp, arg3);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1301 or:
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1302 tmp = WIDEN_MULT_EXPR(arg1, arg2);
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1303 arg3 = WIDEN_SUM_EXPR (tmp, arg3); */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1304 DEFTREECODE (DOT_PROD_EXPR, "dot_prod_expr", tcc_expression, 3)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1305
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1306 /* Widening summation.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1307 The first argument is of type t1.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1308 The second argument is of type t2, such that t2 is at least twice
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1309 the size of t1. The type of the entire expression is also t2.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1310 WIDEN_SUM_EXPR is equivalent to first widening (promoting)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1311 the first argument from type t1 to type t2, and then summing it
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1312 with the second argument. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1313 DEFTREECODE (WIDEN_SUM_EXPR, "widen_sum_expr", tcc_binary, 2)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
1314
111
kono
parents: 67
diff changeset
1315 /* Widening sad (sum of absolute differences).
kono
parents: 67
diff changeset
1316 The first two arguments are of type t1 which should be integer.
kono
parents: 67
diff changeset
1317 The third argument and the result are of type t2, such that t2 is at least
kono
parents: 67
diff changeset
1318 twice the size of t1. Like DOT_PROD_EXPR, SAD_EXPR (arg1,arg2,arg3) is
kono
parents: 67
diff changeset
1319 equivalent to (note we don't have WIDEN_MINUS_EXPR now, but we assume its
kono
parents: 67
diff changeset
1320 behavior is similar to WIDEN_SUM_EXPR):
kono
parents: 67
diff changeset
1321 tmp = WIDEN_MINUS_EXPR (arg1, arg2)
kono
parents: 67
diff changeset
1322 tmp2 = ABS_EXPR (tmp)
kono
parents: 67
diff changeset
1323 arg3 = PLUS_EXPR (tmp2, arg3)
kono
parents: 67
diff changeset
1324 or:
kono
parents: 67
diff changeset
1325 tmp = WIDEN_MINUS_EXPR (arg1, arg2)
kono
parents: 67
diff changeset
1326 tmp2 = ABS_EXPR (tmp)
kono
parents: 67
diff changeset
1327 arg3 = WIDEN_SUM_EXPR (tmp2, arg3)
kono
parents: 67
diff changeset
1328 */
kono
parents: 67
diff changeset
1329 DEFTREECODE (SAD_EXPR, "sad_expr", tcc_expression, 3)
kono
parents: 67
diff changeset
1330
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1331 /* Widening multiplication.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1332 The two arguments are of type t1.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1333 The result is of type t2, such that t2 is at least twice
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1334 the size of t1. WIDEN_MULT_EXPR is equivalent to first widening (promoting)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1335 the arguments from type t1 to type t2, and then multiplying them. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1336 DEFTREECODE (WIDEN_MULT_EXPR, "widen_mult_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1337
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1338 /* Widening multiply-accumulate.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1339 The first two arguments are of type t1.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1340 The third argument and the result are of type t2, such as t2 is at least
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1341 twice the size of t1. t1 and t2 must be integral or fixed-point types.
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1342 The expression is equivalent to a WIDEN_MULT_EXPR operation
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1343 of the first two operands followed by an add or subtract of the third
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1344 operand. */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1345 DEFTREECODE (WIDEN_MULT_PLUS_EXPR, "widen_mult_plus_expr", tcc_expression, 3)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1346 /* This is like the above, except in the final expression the multiply result
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1347 is subtracted from t3. */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1348 DEFTREECODE (WIDEN_MULT_MINUS_EXPR, "widen_mult_minus_expr", tcc_expression, 3)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1349
111
kono
parents: 67
diff changeset
1350 /* Widening shift left.
kono
parents: 67
diff changeset
1351 The first operand is of type t1.
kono
parents: 67
diff changeset
1352 The second operand is the number of bits to shift by; it need not be the
kono
parents: 67
diff changeset
1353 same type as the first operand and result.
kono
parents: 67
diff changeset
1354 Note that the result is undefined if the second operand is larger
kono
parents: 67
diff changeset
1355 than or equal to the first operand's type size.
kono
parents: 67
diff changeset
1356 The type of the entire expression is t2, such that t2 is at least twice
kono
parents: 67
diff changeset
1357 the size of t1.
kono
parents: 67
diff changeset
1358 WIDEN_LSHIFT_EXPR is equivalent to first widening (promoting)
kono
parents: 67
diff changeset
1359 the first argument from type t1 to type t2, and then shifting it
kono
parents: 67
diff changeset
1360 by the second argument. */
kono
parents: 67
diff changeset
1361 DEFTREECODE (WIDEN_LSHIFT_EXPR, "widen_lshift_expr", tcc_binary, 2)
kono
parents: 67
diff changeset
1362
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1363 /* Widening vector multiplication.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1364 The two operands are vectors with N elements of size S. Multiplying the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1365 elements of the two vectors will result in N products of size 2*S.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1366 VEC_WIDEN_MULT_HI_EXPR computes the N/2 high products.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1367 VEC_WIDEN_MULT_LO_EXPR computes the N/2 low products. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1368 DEFTREECODE (VEC_WIDEN_MULT_HI_EXPR, "widen_mult_hi_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1369 DEFTREECODE (VEC_WIDEN_MULT_LO_EXPR, "widen_mult_lo_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1370
111
kono
parents: 67
diff changeset
1371 /* Similarly, but return the even or odd N/2 products. */
kono
parents: 67
diff changeset
1372 DEFTREECODE (VEC_WIDEN_MULT_EVEN_EXPR, "widen_mult_even_expr", tcc_binary, 2)
kono
parents: 67
diff changeset
1373 DEFTREECODE (VEC_WIDEN_MULT_ODD_EXPR, "widen_mult_odd_expr", tcc_binary, 2)
kono
parents: 67
diff changeset
1374
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1375 /* Unpack (extract and promote/widen) the high/low elements of the input
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1376 vector into the output vector. The input vector has twice as many
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1377 elements as the output vector, that are half the size of the elements
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1378 of the output vector. This is used to support type promotion. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1379 DEFTREECODE (VEC_UNPACK_HI_EXPR, "vec_unpack_hi_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1380 DEFTREECODE (VEC_UNPACK_LO_EXPR, "vec_unpack_lo_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1381
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1382 /* Unpack (extract) the high/low elements of the input vector, convert
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1383 fixed point values to floating point and widen elements into the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1384 output vector. The input vector has twice as many elements as the output
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1385 vector, that are half the size of the elements of the output vector. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1386 DEFTREECODE (VEC_UNPACK_FLOAT_HI_EXPR, "vec_unpack_float_hi_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1387 DEFTREECODE (VEC_UNPACK_FLOAT_LO_EXPR, "vec_unpack_float_lo_expr", tcc_unary, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1388
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1389 /* Unpack (extract) the high/low elements of the input vector, convert
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1390 floating point values to integer and widen elements into the output
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1391 vector. The input vector has twice as many elements as the output
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1392 vector, that are half the size of the elements of the output vector. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1393 DEFTREECODE (VEC_UNPACK_FIX_TRUNC_HI_EXPR, "vec_unpack_fix_trunc_hi_expr",
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1394 tcc_unary, 1)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1395 DEFTREECODE (VEC_UNPACK_FIX_TRUNC_LO_EXPR, "vec_unpack_fix_trunc_lo_expr",
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1396 tcc_unary, 1)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1397
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1398 /* Pack (demote/narrow and merge) the elements of the two input vectors
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1399 into the output vector using truncation/saturation.
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1400 The elements of the input vectors are twice the size of the elements of the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1401 output vector. This is used to support type demotion. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1402 DEFTREECODE (VEC_PACK_TRUNC_EXPR, "vec_pack_trunc_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1403 DEFTREECODE (VEC_PACK_SAT_EXPR, "vec_pack_sat_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1404
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1405 /* Convert floating point values of the two input vectors to integer
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1406 and pack (narrow and merge) the elements into the output vector. The
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1407 elements of the input vector are twice the size of the elements of
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1408 the output vector. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1409 DEFTREECODE (VEC_PACK_FIX_TRUNC_EXPR, "vec_pack_fix_trunc_expr", tcc_binary, 2)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1410
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1411 /* Convert fixed point values of the two input vectors to floating point
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1412 and pack (narrow and merge) the elements into the output vector. The
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1413 elements of the input vector are twice the size of the elements of
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1414 the output vector. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1415 DEFTREECODE (VEC_PACK_FLOAT_EXPR, "vec_pack_float_expr", tcc_binary, 2)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1416
111
kono
parents: 67
diff changeset
1417 /* Widening vector shift left in bits.
kono
parents: 67
diff changeset
1418 Operand 0 is a vector to be shifted with N elements of size S.
kono
parents: 67
diff changeset
1419 Operand 1 is an integer shift amount in bits.
kono
parents: 67
diff changeset
1420 The result of the operation is N elements of size 2*S.
kono
parents: 67
diff changeset
1421 VEC_WIDEN_LSHIFT_HI_EXPR computes the N/2 high results.
kono
parents: 67
diff changeset
1422 VEC_WIDEN_LSHIFT_LO_EXPR computes the N/2 low results.
kono
parents: 67
diff changeset
1423 */
kono
parents: 67
diff changeset
1424 DEFTREECODE (VEC_WIDEN_LSHIFT_HI_EXPR, "widen_lshift_hi_expr", tcc_binary, 2)
kono
parents: 67
diff changeset
1425 DEFTREECODE (VEC_WIDEN_LSHIFT_LO_EXPR, "widen_lshift_lo_expr", tcc_binary, 2)
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1426
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1427 /* PREDICT_EXPR. Specify hint for branch prediction. The
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1428 PREDICT_EXPR_PREDICTOR specify predictor and PREDICT_EXPR_OUTCOME the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1429 outcome (0 for not taken and 1 for taken). Once the profile is guessed
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1430 all conditional branches leading to execution paths executing the
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1431 PREDICT_EXPR will get predicted by the specified predictor. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1432 DEFTREECODE (PREDICT_EXPR, "predict_expr", tcc_expression, 1)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1433
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1434 /* OPTIMIZATION_NODE. Node to store the optimization options. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1435 DEFTREECODE (OPTIMIZATION_NODE, "optimization_node", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1436
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1437 /* TARGET_OPTION_NODE. Node to store the target specific options. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1438 DEFTREECODE (TARGET_OPTION_NODE, "target_option_node", tcc_exceptional, 0)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1439
111
kono
parents: 67
diff changeset
1440 /* ANNOTATE_EXPR.
kono
parents: 67
diff changeset
1441 Operand 0 is the expression to be annotated.
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1442 Operand 1 is the annotation kind.
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1443 Operand 2 is additional data. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
1444 DEFTREECODE (ANNOTATE_EXPR, "annotate_expr", tcc_expression, 3)
111
kono
parents: 67
diff changeset
1445
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1446 /*
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1447 Local variables:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1448 mode:c
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1449 End:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1450 */