Mercurial > hg > CbC > CbC_gcc
annotate gcc/gimple.def @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* This file contains the definitions of the GIMPLE IR tuples used in GCC. |
| 2 | |
|
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3 Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Aldy Hernandez <aldyh@redhat.com> |
| 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 /* The format of this file is | |
|
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23 DEFGSCODE(GIMPLE_symbol, printable name, GSS_symbol). */ |
| 0 | 24 |
| 25 | |
| 26 /* Error marker. This is used in similar ways as ERROR_MARK in tree.def. */ | |
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27 DEFGSCODE(GIMPLE_ERROR_MARK, "gimple_error_mark", GSS_BASE) |
| 0 | 28 |
| 29 /* IMPORTANT. Do not rearrange the codes between GIMPLE_COND and | |
| 30 GIMPLE_RETURN. The ordering is exposed by gimple_has_ops calls. | |
| 31 These are all the GIMPLE statements with register operands. */ | |
| 32 | |
| 33 /* GIMPLE_COND <COND_CODE, OP1, OP2, TRUE_LABEL, FALSE_LABEL> | |
| 34 represents the conditional jump: | |
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35 |
| 0 | 36 if (OP1 COND_CODE OP2) goto TRUE_LABEL else goto FALSE_LABEL |
| 37 | |
| 38 COND_CODE is the tree code used as the comparison predicate. It | |
| 39 must be of class tcc_comparison. | |
| 40 | |
| 41 OP1 and OP2 are the operands used in the comparison. They must be | |
| 42 accepted by is_gimple_operand. | |
| 43 | |
| 44 TRUE_LABEL and FALSE_LABEL are the LABEL_DECL nodes used as the | |
| 45 jump target for the comparison. */ | |
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46 DEFGSCODE(GIMPLE_COND, "gimple_cond", GSS_WITH_OPS) |
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47 |
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48 /* GIMPLE_DEBUG represents a debug statement. */ |
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49 DEFGSCODE(GIMPLE_DEBUG, "gimple_debug", GSS_WITH_OPS) |
| 0 | 50 |
| 51 /* GIMPLE_GOTO <TARGET> represents unconditional jumps. | |
| 52 TARGET is a LABEL_DECL or an expression node for computed GOTOs. */ | |
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53 DEFGSCODE(GIMPLE_GOTO, "gimple_goto", GSS_WITH_OPS) |
| 0 | 54 |
| 55 /* GIMPLE_LABEL <LABEL> represents label statements. LABEL is a | |
| 56 LABEL_DECL representing a jump target. */ | |
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57 DEFGSCODE(GIMPLE_LABEL, "gimple_label", GSS_WITH_OPS) |
| 0 | 58 |
| 59 /* GIMPLE_SWITCH <INDEX, DEFAULT_LAB, LAB1, ..., LABN> represents the | |
| 60 multiway branch: | |
| 61 | |
| 62 switch (INDEX) | |
| 63 { | |
| 64 case LAB1: ...; break; | |
| 65 ... | |
| 66 case LABN: ...; break; | |
| 67 default: ... | |
| 68 } | |
| 69 | |
| 70 INDEX is the variable evaluated to decide which label to jump to. | |
| 71 | |
| 72 DEFAULT_LAB, LAB1 ... LABN are the tree nodes representing case labels. | |
| 73 They must be CASE_LABEL_EXPR nodes. */ | |
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74 DEFGSCODE(GIMPLE_SWITCH, "gimple_switch", GSS_WITH_OPS) |
| 0 | 75 |
| 76 /* IMPORTANT. | |
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77 |
| 0 | 78 Do not rearrange the codes between GIMPLE_ASSIGN and GIMPLE_RETURN. |
| 79 It's exposed by GIMPLE_RANGE_CHECK calls. These are all the GIMPLE | |
| 80 statements with memory and register operands. */ | |
| 81 | |
| 82 /* GIMPLE_ASSIGN <SUBCODE, LHS, RHS1[, RHS2]> represents the assignment | |
| 83 statement | |
| 84 | |
| 85 LHS = RHS1 SUBCODE RHS2. | |
| 86 | |
| 87 SUBCODE is the tree code for the expression computed by the RHS of the | |
| 88 assignment. It must be one of the tree codes accepted by | |
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89 get_gimple_rhs_class. If LHS is not a gimple register according to |
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90 is_gimple_reg, SUBCODE must be of class GIMPLE_SINGLE_RHS. |
| 0 | 91 |
| 92 LHS is the operand on the LHS of the assignment. It must be a tree node | |
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93 accepted by is_gimple_lvalue. |
| 0 | 94 |
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95 RHS1 is the first operand on the RHS of the assignment. It must always be |
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96 present. It must be a tree node accepted by is_gimple_val. |
| 0 | 97 |
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98 RHS2 is the second operand on the RHS of the assignment. It must be a tree |
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99 node accepted by is_gimple_val. This argument exists only if SUBCODE is |
| 0 | 100 of class GIMPLE_BINARY_RHS. */ |
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101 DEFGSCODE(GIMPLE_ASSIGN, "gimple_assign", GSS_WITH_MEM_OPS) |
| 0 | 102 |
| 103 /* GIMPLE_ASM <STRING, I1, ..., IN, O1, ... OM, C1, ..., CP> | |
| 104 represents inline assembly statements. | |
| 105 | |
| 106 STRING is the string containing the assembly statements. | |
| 107 I1 ... IN are the N input operands. | |
| 108 O1 ... OM are the M output operands. | |
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109 C1 ... CP are the P clobber operands. |
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110 L1 ... LQ are the Q label operands. */ |
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111 DEFGSCODE(GIMPLE_ASM, "gimple_asm", GSS_ASM) |
| 0 | 112 |
| 113 /* GIMPLE_CALL <FN, LHS, ARG1, ..., ARGN[, CHAIN]> represents function | |
| 114 calls. | |
| 115 | |
| 116 FN is the callee. It must be accepted by is_gimple_call_addr. | |
| 117 | |
| 118 LHS is the operand where the return value from FN is stored. It may | |
| 119 be NULL. | |
| 120 | |
| 121 ARG1 ... ARGN are the arguments. They must all be accepted by | |
| 122 is_gimple_operand. | |
| 123 | |
| 124 CHAIN is the optional static chain link for nested functions. */ | |
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125 DEFGSCODE(GIMPLE_CALL, "gimple_call", GSS_CALL) |
| 0 | 126 |
| 127 /* GIMPLE_RETURN <RETVAL> represents return statements. | |
| 128 | |
| 129 RETVAL is the value to return or NULL. If a value is returned it | |
| 130 must be accepted by is_gimple_operand. */ | |
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131 DEFGSCODE(GIMPLE_RETURN, "gimple_return", GSS_WITH_MEM_OPS) |
| 0 | 132 |
| 133 /* GIMPLE_BIND <VARS, BLOCK, BODY> represents a lexical scope. | |
| 134 VARS is the set of variables declared in that scope. | |
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135 BLOCK is the symbol binding block used for debug information. |
| 0 | 136 BODY is the sequence of statements in the scope. */ |
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137 DEFGSCODE(GIMPLE_BIND, "gimple_bind", GSS_BIND) |
| 0 | 138 |
| 139 /* GIMPLE_CATCH <TYPES, HANDLER> represents a typed exception handler. | |
| 140 TYPES is the type (or list of types) handled. HANDLER is the | |
| 141 sequence of statements that handle these types. */ | |
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142 DEFGSCODE(GIMPLE_CATCH, "gimple_catch", GSS_CATCH) |
| 0 | 143 |
| 144 /* GIMPLE_EH_FILTER <TYPES, FAILURE> represents an exception | |
| 145 specification. TYPES is a list of allowed types and FAILURE is the | |
| 146 sequence of statements to execute on failure. */ | |
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147 DEFGSCODE(GIMPLE_EH_FILTER, "gimple_eh_filter", GSS_EH_FILTER) |
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148 |
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149 /* GIMPLE_EH_MUST_NOT_THROW <DECL> represents an exception barrier. |
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150 DECL is a noreturn function decl taking no arguments that will |
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151 be invoked if an exception propagates to this point. */ |
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152 DEFGSCODE(GIMPLE_EH_MUST_NOT_THROW, "gimple_eh_must_not_throw", GSS_EH_MNT) |
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153 |
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154 /* GIMPLE_RESX resumes execution after an exception. */ |
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155 DEFGSCODE(GIMPLE_RESX, "gimple_resx", GSS_EH_CTRL) |
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156 |
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157 /* GIMPLE_EH_DISPATCH demultiplexes an exception edge based on |
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158 the FILTER argument. */ |
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159 DEFGSCODE(GIMPLE_EH_DISPATCH, "gimple_eh_dispatch", GSS_EH_CTRL) |
| 0 | 160 |
| 161 /* GIMPLE_PHI <RESULT, ARG1, ..., ARGN> represents the PHI node | |
| 162 | |
| 163 RESULT = PHI <ARG1, ..., ARGN> | |
| 164 | |
| 165 RESULT is the SSA name created by this PHI node. | |
| 166 | |
| 167 ARG1 ... ARGN are the arguments to the PHI node. N must be | |
| 168 exactly the same as the number of incoming edges to the basic block | |
| 169 holding the PHI node. Every argument is either an SSA name or a | |
| 170 tree node of class tcc_constant. */ | |
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171 DEFGSCODE(GIMPLE_PHI, "gimple_phi", GSS_PHI) |
| 0 | 172 |
| 173 /* GIMPLE_TRY <TRY_KIND, EVAL, CLEANUP> | |
| 174 represents a try/catch or a try/finally statement. | |
| 175 | |
| 176 TRY_KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY. | |
| 177 | |
| 178 EVAL is the sequence of statements to execute on entry to GIMPLE_TRY. | |
| 179 | |
| 180 CLEANUP is the sequence of statements to execute according to | |
| 181 TRY_KIND. If TRY_KIND is GIMPLE_TRY_CATCH, CLEANUP is only exected | |
| 182 if an exception is thrown during execution of EVAL. If TRY_KIND is | |
| 183 GIMPLE_TRY_FINALLY, CLEANUP is always executed after executing EVAL | |
| 184 (regardless of whether EVAL finished normally, or jumped out or an | |
| 185 exception was thrown). */ | |
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186 DEFGSCODE(GIMPLE_TRY, "gimple_try", GSS_TRY) |
| 0 | 187 |
| 188 /* GIMPLE_NOP represents the "do nothing" statement. */ | |
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189 DEFGSCODE(GIMPLE_NOP, "gimple_nop", GSS_BASE) |
| 0 | 190 |
| 191 | |
| 192 /* IMPORTANT. | |
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193 |
| 0 | 194 Do not rearrange any of the GIMPLE_OMP_* codes. This ordering is |
| 195 exposed by the range check in gimple_omp_subcode(). */ | |
| 196 | |
| 197 | |
| 198 /* Tuples used for lowering of OMP_ATOMIC. Although the form of the OMP_ATOMIC | |
| 199 expression is very simple (just in form mem op= expr), various implicit | |
| 200 conversions may cause the expression to become more complex, so that it does | |
| 201 not fit the gimple grammar very well. To overcome this problem, OMP_ATOMIC | |
| 202 is rewritten as a sequence of two codes in gimplification: | |
| 203 | |
| 204 GIMPLE_OMP_LOAD (tmp, mem) | |
| 205 val = some computations involving tmp; | |
| 206 GIMPLE_OMP_STORE (val). */ | |
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207 DEFGSCODE(GIMPLE_OMP_ATOMIC_LOAD, "gimple_omp_atomic_load", |
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208 GSS_OMP_ATOMIC_LOAD) |
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209 DEFGSCODE(GIMPLE_OMP_ATOMIC_STORE, "gimple_omp_atomic_store", |
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210 GSS_OMP_ATOMIC_STORE) |
| 0 | 211 |
| 212 /* GIMPLE_OMP_CONTINUE marks the location of the loop or sections | |
| 213 iteration in partially lowered OpenMP code. */ | |
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214 DEFGSCODE(GIMPLE_OMP_CONTINUE, "gimple_omp_continue", GSS_OMP_CONTINUE) |
| 0 | 215 |
| 216 /* GIMPLE_OMP_CRITICAL <NAME, BODY> represents | |
| 217 | |
| 218 #pragma omp critical [name] | |
| 219 | |
| 220 NAME is the name given to the critical section. | |
| 221 BODY is the sequence of statements that are inside the critical section. */ | |
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222 DEFGSCODE(GIMPLE_OMP_CRITICAL, "gimple_omp_critical", GSS_OMP_CRITICAL) |
| 0 | 223 |
| 224 /* GIMPLE_OMP_FOR <BODY, CLAUSES, INDEX, INITIAL, FINAL, COND, INCR, PRE_BODY> | |
| 225 represents | |
| 226 | |
| 227 PRE_BODY | |
| 228 #pragma omp for [clause1 ... clauseN] | |
| 229 for (INDEX = INITIAL; INDEX COND FINAL; INDEX {+=,-=} INCR) | |
| 230 BODY | |
| 231 | |
| 232 BODY is the loop body. | |
| 233 | |
| 234 CLAUSES is the list of clauses. | |
| 235 | |
| 236 INDEX must be an integer or pointer variable, which is implicitly thread | |
| 237 private. It must be accepted by is_gimple_operand. | |
| 238 | |
| 239 INITIAL is the initial value given to INDEX. It must be | |
| 240 accepted by is_gimple_operand. | |
| 241 | |
| 242 FINAL is the final value that INDEX should take. It must | |
| 243 be accepted by is_gimple_operand. | |
| 244 | |
| 245 COND is the condition code for the controlling predicate. It must | |
| 246 be one of { <, >, <=, >= } | |
| 247 | |
| 248 INCR is the loop index increment. It must be tree node of type | |
| 249 tcc_constant. | |
| 250 | |
| 251 PRE_BODY is a landing pad filled by the gimplifier with things from | |
| 252 INIT, COND, and INCR that are technically part of the OMP_FOR | |
| 253 structured block, but are evaluated before the loop body begins. | |
| 254 | |
| 255 INITIAL, FINAL and INCR are required to be loop invariant integer | |
| 256 expressions that are evaluated without any synchronization. | |
| 257 The evaluation order, frequency of evaluation and side-effects are | |
| 258 unspecified by the standard. */ | |
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259 DEFGSCODE(GIMPLE_OMP_FOR, "gimple_omp_for", GSS_OMP_FOR) |
| 0 | 260 |
| 261 /* GIMPLE_OMP_MASTER <BODY> represents #pragma omp master. | |
| 262 BODY is the sequence of statements to execute in the master section. */ | |
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263 DEFGSCODE(GIMPLE_OMP_MASTER, "gimple_omp_master", GSS_OMP) |
| 0 | 264 |
| 265 /* GIMPLE_OMP_ORDERED <BODY> represents #pragma omp ordered. | |
| 266 BODY is the sequence of statements to execute in the ordered section. */ | |
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267 DEFGSCODE(GIMPLE_OMP_ORDERED, "gimple_omp_ordered", GSS_OMP) |
| 0 | 268 |
| 269 /* GIMPLE_OMP_PARALLEL <BODY, CLAUSES, CHILD_FN, DATA_ARG> represents | |
| 270 | |
| 271 #pragma omp parallel [CLAUSES] | |
| 272 BODY | |
| 273 | |
| 274 BODY is a the sequence of statements to be executed by all threads. | |
| 275 | |
| 276 CLAUSES is a TREE_LIST node with all the clauses. | |
| 277 | |
| 278 CHILD_FN is set when outlining the body of the parallel region. | |
| 279 All the statements in BODY are moved into this newly created | |
| 280 function when converting OMP constructs into low-GIMPLE. | |
| 281 | |
| 282 DATA_ARG is a local variable in the parent function containing data | |
| 283 to be shared with CHILD_FN. This is used to implement all the data | |
| 284 sharing clauses. */ | |
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285 DEFGSCODE(GIMPLE_OMP_PARALLEL, "gimple_omp_parallel", GSS_OMP_PARALLEL) |
| 0 | 286 |
| 287 /* GIMPLE_OMP_TASK <BODY, CLAUSES, CHILD_FN, DATA_ARG, COPY_FN, | |
| 288 ARG_SIZE, ARG_ALIGN> represents | |
| 289 | |
| 290 #pragma omp task [CLAUSES] | |
| 291 BODY | |
| 292 | |
| 293 BODY is a the sequence of statements to be executed by all threads. | |
| 294 | |
| 295 CLAUSES is a TREE_LIST node with all the clauses. | |
| 296 | |
| 297 CHILD_FN is set when outlining the body of the explicit task region. | |
| 298 All the statements in BODY are moved into this newly created | |
| 299 function when converting OMP constructs into low-GIMPLE. | |
| 300 | |
| 301 DATA_ARG is a local variable in the parent function containing data | |
| 302 to be shared with CHILD_FN. This is used to implement all the data | |
| 303 sharing clauses. | |
| 304 | |
| 305 COPY_FN is set when outlining the firstprivate var initialization. | |
| 306 All the needed statements are emitted into the newly created | |
| 307 function, or when only memcpy is needed, it is NULL. | |
| 308 | |
| 309 ARG_SIZE and ARG_ALIGN are the size and alignment of the incoming | |
| 310 data area allocated by GOMP_task and passed to CHILD_FN. */ | |
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311 DEFGSCODE(GIMPLE_OMP_TASK, "gimple_omp_task", GSS_OMP_TASK) |
| 0 | 312 |
| 313 /* OMP_RETURN marks the end of an OpenMP directive. */ | |
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314 DEFGSCODE(GIMPLE_OMP_RETURN, "gimple_omp_return", GSS_BASE) |
| 0 | 315 |
| 316 /* OMP_SECTION <BODY> represents #pragma omp section. | |
| 317 BODY is the sequence of statements in the section body. */ | |
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318 DEFGSCODE(GIMPLE_OMP_SECTION, "gimple_omp_section", GSS_OMP) |
| 0 | 319 |
| 320 /* OMP_SECTIONS <BODY, CLAUSES, CONTROL> represents #pragma omp sections. | |
| 321 | |
| 322 BODY is the sequence of statements in the sections body. | |
| 323 CLAUSES is a TREE_LIST node holding the list of associated clauses. | |
| 324 CONTROL is a VAR_DECL used for deciding which of the sections | |
| 325 to execute. */ | |
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326 DEFGSCODE(GIMPLE_OMP_SECTIONS, "gimple_omp_sections", GSS_OMP_SECTIONS) |
| 0 | 327 |
| 328 /* GIMPLE_OMP_SECTIONS_SWITCH is a marker placed immediately after | |
| 329 OMP_SECTIONS. It represents the GIMPLE_SWITCH used to decide which | |
| 330 branch is taken. */ | |
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331 DEFGSCODE(GIMPLE_OMP_SECTIONS_SWITCH, "gimple_omp_sections_switch", GSS_BASE) |
| 0 | 332 |
| 333 /* GIMPLE_OMP_SINGLE <BODY, CLAUSES> represents #pragma omp single | |
| 334 BODY is the sequence of statements inside the single section. | |
| 335 CLAUSES is a TREE_LIST node holding the associated clauses. */ | |
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336 DEFGSCODE(GIMPLE_OMP_SINGLE, "gimple_omp_single", GSS_OMP_SINGLE) |
| 0 | 337 |
| 338 /* GIMPLE_PREDICT <PREDICT, OUTCOME> specifies a hint for branch prediction. | |
| 339 | |
| 340 PREDICT is one of the predictors from predict.def. | |
| 341 | |
| 342 OUTCOME is NOT_TAKEN or TAKEN. */ | |
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343 DEFGSCODE(GIMPLE_PREDICT, "gimple_predict", GSS_BASE) |
| 0 | 344 |
| 345 /* This node represents a cleanup expression. It is ONLY USED INTERNALLY | |
| 346 by the gimplifier as a placeholder for cleanups, and its uses will be | |
| 347 cleaned up by the time gimplification is done. | |
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348 |
| 0 | 349 This tuple should not exist outside of the gimplifier proper. */ |
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350 DEFGSCODE(GIMPLE_WITH_CLEANUP_EXPR, "gimple_with_cleanup_expr", GSS_WCE) |