Mercurial > hg > CbC > CbC_gcc
annotate gcc/reload.h @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Communication between reload.c, reload1.c and the rest of compiler. |
| 2 Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 1999, | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
3 2000, 2001, 2003, 2004, 2007, 2008, 2010 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
4 Free Software Foundation, Inc. |
| 0 | 5 |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 | |
| 23 /* If secondary reloads are the same for inputs and outputs, define those | |
| 24 macros here. */ | |
| 25 | |
| 26 #ifdef SECONDARY_RELOAD_CLASS | |
| 27 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \ | |
| 28 SECONDARY_RELOAD_CLASS (CLASS, MODE, X) | |
| 29 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \ | |
| 30 SECONDARY_RELOAD_CLASS (CLASS, MODE, X) | |
| 31 #endif | |
| 32 | |
|
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
|
33 extern int register_move_cost (enum machine_mode, reg_class_t, reg_class_t); |
|
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
|
34 extern int memory_move_cost (enum machine_mode, enum reg_class, bool); |
|
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
|
35 extern int memory_move_secondary_cost (enum machine_mode, reg_class_t, bool); |
| 0 | 36 |
| 37 /* Maximum number of reloads we can need. */ | |
| 38 #define MAX_RELOADS (2 * MAX_RECOG_OPERANDS * (MAX_REGS_PER_ADDRESS + 1)) | |
| 39 | |
| 40 /* Encode the usage of a reload. The following codes are supported: | |
| 41 | |
| 42 RELOAD_FOR_INPUT reload of an input operand | |
| 43 RELOAD_FOR_OUTPUT likewise, for output | |
| 44 RELOAD_FOR_INSN a reload that must not conflict with anything | |
| 45 used in the insn, but may conflict with | |
| 46 something used before or after the insn | |
| 47 RELOAD_FOR_INPUT_ADDRESS reload for parts of the address of an object | |
| 48 that is an input reload | |
| 49 RELOAD_FOR_INPADDR_ADDRESS reload needed for RELOAD_FOR_INPUT_ADDRESS | |
| 50 RELOAD_FOR_OUTPUT_ADDRESS like RELOAD_FOR INPUT_ADDRESS, for output | |
| 51 RELOAD_FOR_OUTADDR_ADDRESS reload needed for RELOAD_FOR_OUTPUT_ADDRESS | |
| 52 RELOAD_FOR_OPERAND_ADDRESS reload for the address of a non-reloaded | |
| 53 operand; these don't conflict with | |
| 54 any other addresses. | |
| 55 RELOAD_FOR_OPADDR_ADDR reload needed for RELOAD_FOR_OPERAND_ADDRESS | |
| 56 reloads; usually secondary reloads | |
| 57 RELOAD_OTHER none of the above, usually multiple uses | |
| 58 RELOAD_FOR_OTHER_ADDRESS reload for part of the address of an input | |
| 59 that is marked RELOAD_OTHER. | |
| 60 | |
| 61 This used to be "enum reload_when_needed" but some debuggers have trouble | |
| 62 with an enum tag and variable of the same name. */ | |
| 63 | |
| 64 enum reload_type | |
| 65 { | |
| 66 RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN, | |
| 67 RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS, | |
| 68 RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS, | |
| 69 RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR, | |
| 70 RELOAD_OTHER, RELOAD_FOR_OTHER_ADDRESS | |
| 71 }; | |
| 72 | |
| 73 #ifdef GCC_INSN_CODES_H | |
| 74 /* Each reload is recorded with a structure like this. */ | |
| 75 struct reload | |
| 76 { | |
| 77 /* The value to reload from */ | |
| 78 rtx in; | |
| 79 /* Where to store reload-reg afterward if nec (often the same as | |
| 80 reload_in) */ | |
| 81 rtx out; | |
| 82 | |
| 83 /* The class of registers to reload into. */ | |
| 84 enum reg_class rclass; | |
| 85 | |
| 86 /* The mode this operand should have when reloaded, on input. */ | |
| 87 enum machine_mode inmode; | |
| 88 /* The mode this operand should have when reloaded, on output. */ | |
| 89 enum machine_mode outmode; | |
| 90 | |
| 91 /* The mode of the reload register. */ | |
| 92 enum machine_mode mode; | |
| 93 | |
| 94 /* the largest number of registers this reload will require. */ | |
| 95 unsigned int nregs; | |
| 96 | |
| 97 /* Positive amount to increment or decrement by if | |
| 98 reload_in is a PRE_DEC, PRE_INC, POST_DEC, POST_INC. | |
| 99 Ignored otherwise (don't assume it is zero). */ | |
| 100 int inc; | |
| 101 /* A reg for which reload_in is the equivalent. | |
| 102 If reload_in is a symbol_ref which came from | |
| 103 reg_equiv_constant, then this is the pseudo | |
| 104 which has that symbol_ref as equivalent. */ | |
| 105 rtx in_reg; | |
| 106 rtx out_reg; | |
| 107 | |
| 108 /* Used in find_reload_regs to record the allocated register. */ | |
| 109 int regno; | |
| 110 /* This is the register to reload into. If it is zero when `find_reloads' | |
| 111 returns, you must find a suitable register in the class specified by | |
| 112 reload_reg_class, and store here an rtx for that register with mode from | |
| 113 reload_inmode or reload_outmode. */ | |
| 114 rtx reg_rtx; | |
| 115 /* The operand number being reloaded. This is used to group related reloads | |
| 116 and need not always be equal to the actual operand number in the insn, | |
| 117 though it current will be; for in-out operands, it is one of the two | |
| 118 operand numbers. */ | |
| 119 int opnum; | |
| 120 | |
| 121 /* Gives the reload number of a secondary input reload, when needed; | |
| 122 otherwise -1. */ | |
| 123 int secondary_in_reload; | |
| 124 /* Gives the reload number of a secondary output reload, when needed; | |
| 125 otherwise -1. */ | |
| 126 int secondary_out_reload; | |
| 127 /* If a secondary input reload is required, gives the INSN_CODE that uses the | |
| 128 secondary reload as a scratch register, or CODE_FOR_nothing if the | |
| 129 secondary reload register is to be an intermediate register. */ | |
| 130 enum insn_code secondary_in_icode; | |
| 131 /* Likewise, for a secondary output reload. */ | |
| 132 enum insn_code secondary_out_icode; | |
| 133 | |
| 134 /* Classifies reload as needed either for addressing an input reload, | |
| 135 addressing an output, for addressing a non-reloaded mem ref, or for | |
| 136 unspecified purposes (i.e., more than one of the above). */ | |
| 137 enum reload_type when_needed; | |
| 138 | |
| 139 /* Nonzero for an optional reload. Optional reloads are ignored unless the | |
| 140 value is already sitting in a register. */ | |
| 141 unsigned int optional:1; | |
| 142 /* nonzero if this reload shouldn't be combined with another reload. */ | |
| 143 unsigned int nocombine:1; | |
| 144 /* Nonzero if this is a secondary register for one or more reloads. */ | |
| 145 unsigned int secondary_p:1; | |
| 146 /* Nonzero if this reload must use a register not already allocated to a | |
| 147 group. */ | |
| 148 unsigned int nongroup:1; | |
| 149 }; | |
| 150 | |
| 151 extern struct reload rld[MAX_RELOADS]; | |
| 152 extern int n_reloads; | |
| 153 #endif | |
| 154 | |
|
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
|
155 /* Target-dependent globals. */ |
|
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
|
156 struct target_reload { |
|
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
|
157 /* Nonzero if indirect addressing is supported when the innermost MEM is |
|
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
|
158 of the form (MEM (SYMBOL_REF sym)). It is assumed that the level to |
|
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
|
159 which these are valid is the same as spill_indirect_levels, above. */ |
|
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
|
160 bool x_indirect_symref_ok; |
|
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
|
161 |
|
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
|
162 /* Nonzero if an address (plus (reg frame_pointer) (reg ...)) is valid. */ |
|
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
|
163 bool x_double_reg_address_ok; |
|
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
|
164 |
|
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
|
165 /* Nonzero if indirect addressing is supported on the machine; this means |
|
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
|
166 that spilling (REG n) does not require reloading it into a register in |
|
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
|
167 order to do (MEM (REG n)) or (MEM (PLUS (REG n) (CONST_INT c))). 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
|
168 value indicates the level of indirect addressing supported, e.g., two |
|
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
|
169 means that (MEM (MEM (REG n))) is also valid if (REG n) does not get |
|
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
|
170 a hard 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
|
171 bool x_spill_indirect_levels; |
|
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
|
172 |
|
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
|
173 /* True if caller-save has been reinitialized. */ |
|
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
|
174 bool x_caller_save_initialized_p; |
|
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
|
175 |
|
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
|
176 /* Modes for each hard register that we can save. The smallest mode is wide |
|
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
|
177 enough to save the entire contents of the register. When saving 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
|
178 register because it is live we first try to save in multi-register modes. |
|
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
|
179 If that is not possible the save is done one register at a time. */ |
|
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
|
180 enum machine_mode (x_regno_save_mode |
|
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
|
181 [FIRST_PSEUDO_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
|
182 [MAX_MOVE_MAX / MIN_UNITS_PER_WORD + 1]); |
|
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
|
183 |
|
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
|
184 /* We will only make a register eligible for caller-save if it can be |
|
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
|
185 saved in its widest mode with a simple SET insn as long as the memory |
|
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
|
186 address is valid. We record the INSN_CODE is those insns here since |
|
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
|
187 when we emit them, the addresses might not be valid, so they might not |
|
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
|
188 be recognized. */ |
|
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
|
189 int x_cached_reg_save_code[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE]; |
|
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
|
190 int x_cached_reg_restore_code[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE]; |
|
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
|
191 }; |
|
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
|
192 |
|
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
|
193 extern struct target_reload default_target_reload; |
|
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
|
194 #if SWITCHABLE_TARGET |
|
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
|
195 extern struct target_reload *this_target_reload; |
|
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
|
196 #else |
|
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
|
197 #define this_target_reload (&default_target_reload) |
|
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
|
198 #endif |
|
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
|
199 |
|
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
|
200 #define indirect_symref_ok \ |
|
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
|
201 (this_target_reload->x_indirect_symref_ok) |
|
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
|
202 #define double_reg_address_ok \ |
|
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
|
203 (this_target_reload->x_double_reg_address_ok) |
|
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
|
204 #define caller_save_initialized_p \ |
|
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
|
205 (this_target_reload->x_caller_save_initialized_p) |
|
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
|
206 |
| 0 | 207 extern GTY (()) VEC(rtx,gc) *reg_equiv_memory_loc_vec; |
| 208 extern rtx *reg_equiv_constant; | |
| 209 extern rtx *reg_equiv_invariant; | |
| 210 extern rtx *reg_equiv_memory_loc; | |
| 211 extern rtx *reg_equiv_address; | |
| 212 extern rtx *reg_equiv_mem; | |
| 213 extern rtx *reg_equiv_alt_mem_list; | |
| 214 | |
| 215 /* Element N is the list of insns that initialized reg N from its equivalent | |
| 216 constant or memory slot. */ | |
| 217 extern GTY((length("reg_equiv_init_size"))) rtx *reg_equiv_init; | |
| 218 | |
| 219 /* The size of the previous array, for GC purposes. */ | |
| 220 extern GTY(()) int reg_equiv_init_size; | |
| 221 | |
| 222 /* All the "earlyclobber" operands of the current insn | |
| 223 are recorded here. */ | |
| 224 extern int n_earlyclobbers; | |
| 225 extern rtx reload_earlyclobbers[MAX_RECOG_OPERANDS]; | |
| 226 | |
| 227 /* Save the number of operands. */ | |
| 228 extern int reload_n_operands; | |
| 229 | |
| 230 /* First uid used by insns created by reload in this function. | |
| 231 Used in find_equiv_reg. */ | |
| 232 extern int reload_first_uid; | |
| 233 | |
| 234 extern int num_not_at_initial_offset; | |
| 235 | |
| 236 #if defined SET_HARD_REG_BIT && defined CLEAR_REG_SET | |
| 237 /* This structure describes instructions which are relevant for reload. | |
| 238 Apart from all regular insns, this also includes CODE_LABELs, since they | |
| 239 must be examined for register elimination. */ | |
| 240 struct insn_chain | |
| 241 { | |
| 242 /* Links to the neighbor instructions. */ | |
| 243 struct insn_chain *next, *prev; | |
| 244 | |
| 245 /* Link through a chains set up by calculate_needs_all_insns, containing | |
| 246 all insns that need reloading. */ | |
| 247 struct insn_chain *next_need_reload; | |
| 248 | |
| 249 /* The rtx of the insn. */ | |
| 250 rtx insn; | |
| 251 | |
| 252 /* The basic block this insn is in. */ | |
| 253 int block; | |
| 254 | |
| 255 /* Nonzero if find_reloads said the insn requires reloading. */ | |
| 256 unsigned int need_reload:1; | |
| 257 /* Nonzero if find_reloads needs to be run during reload_as_needed to | |
| 258 perform modifications on any operands. */ | |
| 259 unsigned int need_operand_change:1; | |
| 260 /* Nonzero if eliminate_regs_in_insn said it requires eliminations. */ | |
| 261 unsigned int need_elim:1; | |
| 262 /* Nonzero if this insn was inserted by perform_caller_saves. */ | |
| 263 unsigned int is_caller_save_insn:1; | |
| 264 | |
| 265 /* Register life information: record all live hard registers, and | |
| 266 all live pseudos that have a hard register. This set also | |
| 267 contains pseudos spilled by IRA. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
268 bitmap_head live_throughout; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
269 bitmap_head dead_or_set; |
| 0 | 270 |
| 271 /* Copies of the global variables computed by find_reloads. */ | |
| 272 struct reload *rld; | |
| 273 int n_reloads; | |
| 274 | |
| 275 /* Indicates which registers have already been used for spills. */ | |
| 276 HARD_REG_SET used_spill_regs; | |
| 277 }; | |
| 278 | |
| 279 /* A chain of insn_chain structures to describe all non-note insns in | |
| 280 a function. */ | |
| 281 extern struct insn_chain *reload_insn_chain; | |
| 282 | |
| 283 /* Allocate a new insn_chain structure. */ | |
| 284 extern struct insn_chain *new_insn_chain (void); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
285 #endif |
| 0 | 286 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
287 #if defined SET_HARD_REG_BIT |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
288 extern void compute_use_by_pseudos (HARD_REG_SET *, bitmap); |
| 0 | 289 #endif |
| 290 | |
| 291 /* Functions from reload.c: */ | |
| 292 | |
|
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
|
293 extern reg_class_t secondary_reload_class (bool, reg_class_t, |
|
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
|
294 enum machine_mode, rtx); |
| 0 | 295 |
| 296 #ifdef GCC_INSN_CODES_H | |
| 297 extern enum reg_class scratch_reload_class (enum insn_code); | |
| 298 #endif | |
| 299 | |
| 300 /* Return a memory location that will be used to copy X in mode MODE. | |
| 301 If we haven't already made a location for this mode in this insn, | |
| 302 call find_reloads_address on the location being returned. */ | |
| 303 extern rtx get_secondary_mem (rtx, enum machine_mode, int, enum reload_type); | |
| 304 | |
| 305 /* Clear any secondary memory locations we've made. */ | |
| 306 extern void clear_secondary_mem (void); | |
| 307 | |
| 308 /* Transfer all replacements that used to be in reload FROM to be in | |
| 309 reload TO. */ | |
| 310 extern void transfer_replacements (int, int); | |
| 311 | |
| 312 /* IN_RTX is the value loaded by a reload that we now decided to inherit, | |
| 313 or a subpart of it. If we have any replacements registered for IN_RTX, | |
| 314 cancel the reloads that were supposed to load them. | |
| 315 Return nonzero if we canceled any reloads. */ | |
| 316 extern int remove_address_replacements (rtx in_rtx); | |
| 317 | |
| 318 /* Like rtx_equal_p except that it allows a REG and a SUBREG to match | |
| 319 if they are the same hard reg, and has special hacks for | |
| 320 autoincrement and autodecrement. */ | |
| 321 extern int operands_match_p (rtx, rtx); | |
| 322 | |
| 323 /* Return 1 if altering OP will not modify the value of CLOBBER. */ | |
| 324 extern int safe_from_earlyclobber (rtx, rtx); | |
| 325 | |
| 326 /* Search the body of INSN for values that need reloading and record them | |
| 327 with push_reload. REPLACE nonzero means record also where the values occur | |
| 328 so that subst_reloads can be used. */ | |
| 329 extern int find_reloads (rtx, int, int, int, short *); | |
| 330 | |
| 331 /* Compute the sum of X and Y, making canonicalizations assumed in an | |
| 332 address, namely: sum constant integers, surround the sum of two | |
| 333 constants with a CONST, put the constant as the second operand, and | |
| 334 group the constant on the outermost sum. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
335 extern rtx form_sum (enum machine_mode, rtx, rtx); |
| 0 | 336 |
| 337 /* Substitute into the current INSN the registers into which we have reloaded | |
| 338 the things that need reloading. */ | |
| 339 extern void subst_reloads (rtx); | |
| 340 | |
| 341 /* Make a copy of any replacements being done into X and move those copies | |
| 342 to locations in Y, a copy of X. We only look at the highest level of | |
| 343 the RTL. */ | |
| 344 extern void copy_replacements (rtx, rtx); | |
| 345 | |
| 346 /* Change any replacements being done to *X to be done to *Y */ | |
| 347 extern void move_replacements (rtx *x, rtx *y); | |
| 348 | |
| 349 /* If LOC was scheduled to be replaced by something, return the replacement. | |
| 350 Otherwise, return *LOC. */ | |
| 351 extern rtx find_replacement (rtx *); | |
| 352 | |
| 353 /* Nonzero if modifying X will affect IN. */ | |
| 354 extern int reg_overlap_mentioned_for_reload_p (rtx, rtx); | |
| 355 | |
| 356 /* Check the insns before INSN to see if there is a suitable register | |
| 357 containing the same value as GOAL. */ | |
| 358 extern rtx find_equiv_reg (rtx, rtx, enum reg_class, int, short *, | |
| 359 int, enum machine_mode); | |
| 360 | |
| 361 /* Return 1 if register REGNO is the subject of a clobber in insn INSN. */ | |
| 362 extern int regno_clobbered_p (unsigned int, rtx, enum machine_mode, int); | |
| 363 | |
| 364 /* Return 1 if X is an operand of an insn that is being earlyclobbered. */ | |
| 365 extern int earlyclobber_operand_p (rtx); | |
| 366 | |
| 367 /* Record one reload that needs to be performed. */ | |
| 368 extern int push_reload (rtx, rtx, rtx *, rtx *, enum reg_class, | |
| 369 enum machine_mode, enum machine_mode, | |
| 370 int, int, int, enum reload_type); | |
| 371 | |
| 372 /* Functions in postreload.c: */ | |
| 373 extern void reload_cse_regs (rtx); | |
| 374 | |
| 375 /* Functions in reload1.c: */ | |
| 376 | |
| 377 /* Initialize the reload pass once per compilation. */ | |
| 378 extern void init_reload (void); | |
| 379 | |
| 380 /* The reload pass itself. */ | |
| 381 extern int reload (rtx, int); | |
| 382 | |
| 383 /* Mark the slots in regs_ever_live for the hard regs | |
| 384 used by pseudo-reg number REGNO. */ | |
| 385 extern void mark_home_live (int); | |
| 386 | |
| 387 /* Scan X and replace any eliminable registers (such as fp) with a | |
| 388 replacement (such as sp), plus an offset. */ | |
| 389 extern rtx eliminate_regs (rtx, enum machine_mode, rtx); | |
| 390 extern bool elimination_target_reg_p (rtx); | |
| 391 | |
|
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
|
392 /* Called from the register allocator to estimate costs of eliminating |
|
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
|
393 invariant registers. */ |
|
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
|
394 extern void calculate_elim_costs_all_insns (void); |
|
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
|
395 |
| 0 | 396 /* Deallocate the reload register used by reload number R. */ |
| 397 extern void deallocate_reload_reg (int r); | |
| 398 | |
| 399 /* Functions in caller-save.c: */ | |
| 400 | |
| 401 /* Initialize for caller-save. */ | |
| 402 extern void init_caller_save (void); | |
| 403 | |
| 404 /* Initialize save areas by showing that we haven't allocated any yet. */ | |
| 405 extern void init_save_areas (void); | |
| 406 | |
| 407 /* Allocate save areas for any hard registers that might need saving. */ | |
| 408 extern void setup_save_areas (void); | |
| 409 | |
| 410 /* Find the places where hard regs are live across calls and save them. */ | |
| 411 extern void save_call_clobbered_regs (void); | |
| 412 | |
| 413 /* Replace (subreg (reg)) with the appropriate (reg) for any operands. */ | |
| 414 extern void cleanup_subreg_operands (rtx); | |
| 415 | |
| 416 /* Debugging support. */ | |
| 417 extern void debug_reload_to_stream (FILE *); | |
| 418 extern void debug_reload (void); | |
| 419 | |
| 420 /* Compute the actual register we should reload to, in case we're | |
| 421 reloading to/from a register that is wider than a word. */ | |
| 422 extern rtx reload_adjust_reg_for_mode (rtx, enum machine_mode); |