Mercurial > hg > CbC > CbC_gcc
comparison gcc/ipa-param-manipulation.h @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
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children | 1830386684a0 |
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1 /* Manipulation of formal and actual parameters of functions and function | |
2 calls. | |
3 Copyright (C) 2017-2018 Free Software Foundation, Inc. | |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it under | |
8 the terms of the GNU General Public License as published by the Free | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #ifndef IPA_PARAM_MANIPULATION_H | |
22 #define IPA_PARAM_MANIPULATION_H | |
23 | |
24 /* Operation to be performed for the parameter in ipa_parm_adjustment | |
25 below. */ | |
26 enum ipa_parm_op { | |
27 IPA_PARM_OP_NONE, | |
28 | |
29 /* This describes a brand new parameter. | |
30 | |
31 The field `type' should be set to the new type, `arg_prefix' | |
32 should be set to the string prefix for the new DECL_NAME, and | |
33 `new_decl' will ultimately hold the newly created argument. */ | |
34 IPA_PARM_OP_NEW, | |
35 | |
36 /* This new parameter is an unmodified parameter at index base_index. */ | |
37 IPA_PARM_OP_COPY, | |
38 | |
39 /* This adjustment describes a parameter that is about to be removed | |
40 completely. Most users will probably need to book keep those so that they | |
41 don't leave behinfd any non default def ssa names belonging to them. */ | |
42 IPA_PARM_OP_REMOVE | |
43 }; | |
44 | |
45 /* Structure to describe transformations of formal parameters and actual | |
46 arguments. Each instance describes one new parameter and they are meant to | |
47 be stored in a vector. Additionally, most users will probably want to store | |
48 adjustments about parameters that are being removed altogether so that SSA | |
49 names belonging to them can be replaced by SSA names of an artificial | |
50 variable. */ | |
51 struct ipa_parm_adjustment | |
52 { | |
53 /* The original PARM_DECL itself, helpful for processing of the body of the | |
54 function itself. Intended for traversing function bodies. | |
55 ipa_modify_formal_parameters, ipa_modify_call_arguments and | |
56 ipa_combine_adjustments ignore this and use base_index. | |
57 ipa_modify_formal_parameters actually sets this. */ | |
58 tree base; | |
59 | |
60 /* Type of the new parameter. However, if by_ref is true, the real type will | |
61 be a pointer to this type. */ | |
62 tree type; | |
63 | |
64 /* Alias refrerence type to be used in MEM_REFs when adjusting caller | |
65 arguments. */ | |
66 tree alias_ptr_type; | |
67 | |
68 /* The new declaration when creating/replacing a parameter. Created | |
69 by ipa_modify_formal_parameters, useful for functions modifying | |
70 the body accordingly. For brand new arguments, this is the newly | |
71 created argument. */ | |
72 tree new_decl; | |
73 | |
74 /* New declaration of a substitute variable that we may use to replace all | |
75 non-default-def ssa names when a parm decl is going away. */ | |
76 tree new_ssa_base; | |
77 | |
78 /* If non-NULL and the original parameter is to be removed (copy_param below | |
79 is NULL), this is going to be its nonlocalized vars value. */ | |
80 tree nonlocal_value; | |
81 | |
82 /* This holds the prefix to be used for the new DECL_NAME. */ | |
83 const char *arg_prefix; | |
84 | |
85 /* Offset into the original parameter (for the cases when the new parameter | |
86 is a component of an original one). */ | |
87 poly_int64_pod offset; | |
88 | |
89 /* Zero based index of the original parameter this one is based on. */ | |
90 int base_index; | |
91 | |
92 /* Whether this parameter is a new parameter, a copy of an old one, | |
93 or one about to be removed. */ | |
94 enum ipa_parm_op op; | |
95 | |
96 /* Storage order of the original parameter (for the cases when the new | |
97 parameter is a component of an original one). */ | |
98 unsigned reverse : 1; | |
99 | |
100 /* The parameter is to be passed by reference. */ | |
101 unsigned by_ref : 1; | |
102 }; | |
103 | |
104 typedef vec<ipa_parm_adjustment> ipa_parm_adjustment_vec; | |
105 | |
106 vec<tree> ipa_get_vector_of_formal_parms (tree fndecl); | |
107 vec<tree> ipa_get_vector_of_formal_parm_types (tree fntype); | |
108 void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec); | |
109 void ipa_modify_call_arguments (struct cgraph_edge *, gcall *, | |
110 ipa_parm_adjustment_vec); | |
111 ipa_parm_adjustment_vec ipa_combine_adjustments (ipa_parm_adjustment_vec, | |
112 ipa_parm_adjustment_vec); | |
113 void ipa_dump_param_adjustments (FILE *, ipa_parm_adjustment_vec, tree); | |
114 | |
115 bool ipa_modify_expr (tree *, bool, ipa_parm_adjustment_vec); | |
116 ipa_parm_adjustment *ipa_get_adjustment_candidate (tree **, bool *, | |
117 ipa_parm_adjustment_vec, | |
118 bool); | |
119 | |
120 #endif /* IPA_PARAM_MANIPULATION_H */ |