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dbb0cd11 | 1 | /* Definitions for code generation pass of GNU compiler. |
ddca3e9d | 2 | Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000 Free Software Foundation, Inc. | |
dbb0cd11 | 4 | |
f12b58b3 | 5 | This file is part of GCC. |
dbb0cd11 | 6 | |
f12b58b3 | 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 2, or (at your option) any later | |
10 | version. | |
dbb0cd11 | 11 | |
f12b58b3 | 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. | |
dbb0cd11 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
f12b58b3 | 18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
dbb0cd11 | 21 | |
dbb0cd11 | 22 | /* The default branch cost is 1. */ |
23 | #ifndef BRANCH_COST | |
24 | #define BRANCH_COST 1 | |
25 | #endif | |
26 | ||
27 | /* Macros to access the slots of a QUEUED rtx. | |
28 | Here rather than in rtl.h because only the expansion pass | |
29 | should ever encounter a QUEUED. */ | |
30 | ||
31 | /* The variable for which an increment is queued. */ | |
32 | #define QUEUED_VAR(P) XEXP (P, 0) | |
33 | /* If the increment has been emitted, this is the insn | |
ec91253b | 34 | that does the increment. It is zero before the increment is emitted. |
35 | If more than one insn is emitted, this is the first insn. */ | |
dbb0cd11 | 36 | #define QUEUED_INSN(P) XEXP (P, 1) |
37 | /* If a pre-increment copy has been generated, this is the copy | |
38 | (it is a temporary reg). Zero if no copy made yet. */ | |
39 | #define QUEUED_COPY(P) XEXP (P, 2) | |
40 | /* This is the body to use for the insn to do the increment. | |
41 | It is used to emit the increment. */ | |
42 | #define QUEUED_BODY(P) XEXP (P, 3) | |
43 | /* Next QUEUED in the queue. */ | |
44 | #define QUEUED_NEXT(P) XEXP (P, 4) | |
45 | ||
46 | /* This is the 4th arg to `expand_expr'. | |
47 | EXPAND_SUM means it is ok to return a PLUS rtx or MULT rtx. | |
48 | EXPAND_INITIALIZER is similar but also record any labels on forced_labels. | |
49 | EXPAND_CONST_ADDRESS means it is ok to return a MEM whose address | |
ab716090 | 50 | is a constant that is not a legitimate address. |
8a06f2d4 | 51 | EXPAND_WRITE means we are only going to write to the resulting rtx. */ |
52 | enum expand_modifier {EXPAND_NORMAL, EXPAND_SUM, EXPAND_CONST_ADDRESS, | |
53 | EXPAND_INITIALIZER, EXPAND_WRITE}; | |
dbb0cd11 | 54 | |
b49854c6 | 55 | /* Prevent the compiler from deferring stack pops. See |
56 | inhibit_defer_pop for more information. */ | |
57 | #define NO_DEFER_POP (inhibit_defer_pop += 1) | |
58 | ||
59 | /* Allow the compiler to defer stack pops. See inhibit_defer_pop for | |
60 | more information. */ | |
61 | #define OK_DEFER_POP (inhibit_defer_pop -= 1) | |
dbb0cd11 | 62 | \f |
63 | #ifdef TREE_CODE /* Don't lose if tree.h not included. */ | |
64 | /* Structure to record the size of a sequence of arguments | |
902de8ed | 65 | as the sum of a tree-expression and a constant. This structure is |
66 | also used to store offsets from the stack, which might be negative, | |
67 | so the variable part must be ssizetype, not sizetype. */ | |
dbb0cd11 | 68 | |
69 | struct args_size | |
70 | { | |
997d68fe | 71 | HOST_WIDE_INT constant; |
dbb0cd11 | 72 | tree var; |
73 | }; | |
74 | #endif | |
75 | ||
76 | /* Add the value of the tree INC to the `struct args_size' TO. */ | |
77 | ||
be92c27e | 78 | #define ADD_PARM_SIZE(TO, INC) \ |
79 | do { \ | |
80 | tree inc = (INC); \ | |
81 | if (host_integerp (inc, 0)) \ | |
82 | (TO).constant += tree_low_cst (inc, 0); \ | |
83 | else if ((TO).var == 0) \ | |
4de3dc32 | 84 | (TO).var = convert (ssizetype, inc); \ |
be92c27e | 85 | else \ |
86 | (TO).var = size_binop (PLUS_EXPR, (TO).var, \ | |
87 | convert (ssizetype, inc)); \ | |
88 | } while (0) | |
89 | ||
90 | #define SUB_PARM_SIZE(TO, DEC) \ | |
91 | do { \ | |
92 | tree dec = (DEC); \ | |
93 | if (host_integerp (dec, 0)) \ | |
94 | (TO).constant -= tree_low_cst (dec, 0); \ | |
95 | else if ((TO).var == 0) \ | |
96 | (TO).var = size_binop (MINUS_EXPR, ssize_int (0), \ | |
97 | convert (ssizetype, dec)); \ | |
98 | else \ | |
99 | (TO).var = size_binop (MINUS_EXPR, (TO).var, \ | |
100 | convert (ssizetype, dec)); \ | |
101 | } while (0) | |
dbb0cd11 | 102 | |
902de8ed | 103 | /* Convert the implicit sum in a `struct args_size' into a tree |
104 | of type ssizetype. */ | |
105 | #define ARGS_SIZE_TREE(SIZE) \ | |
106 | ((SIZE).var == 0 ? ssize_int ((SIZE).constant) \ | |
4f520835 | 107 | : size_binop (PLUS_EXPR, convert (ssizetype, (SIZE).var), \ |
108 | ssize_int ((SIZE).constant))) | |
902de8ed | 109 | |
dbb0cd11 | 110 | /* Convert the implicit sum in a `struct args_size' into an rtx. */ |
902de8ed | 111 | #define ARGS_SIZE_RTX(SIZE) \ |
112 | ((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \ | |
8a06f2d4 | 113 | : expand_expr (ARGS_SIZE_TREE (SIZE), NULL_RTX, VOIDmode, 0)) |
dbb0cd11 | 114 | |
115 | /* Supply a default definition for FUNCTION_ARG_PADDING: | |
121541ac | 116 | usually pad upward, but pad short args downward on |
dbb0cd11 | 117 | big-endian machines. */ |
118 | ||
119 | enum direction {none, upward, downward}; /* Value has this type. */ | |
120 | ||
121 | #ifndef FUNCTION_ARG_PADDING | |
dbb0cd11 | 122 | #define FUNCTION_ARG_PADDING(MODE, TYPE) \ |
51356f86 | 123 | (! BYTES_BIG_ENDIAN \ |
124 | ? upward \ | |
125 | : (((MODE) == BLKmode \ | |
126 | ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ | |
127 | && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \ | |
128 | : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \ | |
129 | ? downward : upward)) | |
dbb0cd11 | 130 | #endif |
131 | ||
132 | /* Supply a default definition for FUNCTION_ARG_BOUNDARY. Normally, we let | |
133 | FUNCTION_ARG_PADDING, which also pads the length, handle any needed | |
134 | alignment. */ | |
ff385626 | 135 | |
dbb0cd11 | 136 | #ifndef FUNCTION_ARG_BOUNDARY |
137 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) PARM_BOUNDARY | |
138 | #endif | |
139 | ||
997d68fe | 140 | /* Provide a default value for STRICT_ARGUMENT_NAMING. */ |
141 | #ifndef STRICT_ARGUMENT_NAMING | |
142 | #define STRICT_ARGUMENT_NAMING 0 | |
143 | #endif | |
144 | ||
8b823204 | 145 | /* Provide a default value for PRETEND_OUTGOING_VARARGS_NAMED. */ |
146 | #ifdef SETUP_INCOMING_VARARGS | |
147 | #ifndef PRETEND_OUTGOING_VARARGS_NAMED | |
148 | #define PRETEND_OUTGOING_VARARGS_NAMED 1 | |
149 | #endif | |
150 | #else | |
151 | /* It is an error to define PRETEND_OUTGOING_VARARGS_NAMED without | |
152 | defining SETUP_INCOMING_VARARGS. */ | |
153 | #define PRETEND_OUTGOING_VARARGS_NAMED 0 | |
154 | #endif | |
155 | ||
dbb0cd11 | 156 | /* Nonzero if we do not know how to pass TYPE solely in registers. |
157 | We cannot do so in the following cases: | |
158 | ||
159 | - if the type has variable size | |
160 | - if the type is marked as addressable (it is required to be constructed | |
161 | into the stack) | |
162 | - if the padding and mode of the type is such that a copy into a register | |
de3aac59 | 163 | would put it into the wrong part of the register. |
164 | ||
a508ba7a | 165 | Which padding can't be supported depends on the byte endianness. |
dbb0cd11 | 166 | |
de3aac59 | 167 | A value in a register is implicitly padded at the most significant end. |
dbb0cd11 | 168 | On a big-endian machine, that is the lower end in memory. |
169 | So a value padded in memory at the upper end can't go in a register. | |
170 | For a little-endian machine, the reverse is true. */ | |
171 | ||
04144be4 | 172 | #ifndef MUST_PASS_IN_STACK |
dbb0cd11 | 173 | #define MUST_PASS_IN_STACK(MODE,TYPE) \ |
174 | ((TYPE) != 0 \ | |
175 | && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ | |
176 | || TREE_ADDRESSABLE (TYPE) \ | |
177 | || ((MODE) == BLKmode \ | |
d7612002 | 178 | && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ |
179 | && 0 == (int_size_in_bytes (TYPE) \ | |
180 | % (PARM_BOUNDARY / BITS_PER_UNIT))) \ | |
dbb0cd11 | 181 | && (FUNCTION_ARG_PADDING (MODE, TYPE) \ |
51356f86 | 182 | == (BYTES_BIG_ENDIAN ? upward : downward))))) |
04144be4 | 183 | #endif |
dbb0cd11 | 184 | |
f195b57d | 185 | /* Nonzero if type TYPE should be returned in memory. |
dbb0cd11 | 186 | Most machines can use the following default definition. */ |
187 | ||
188 | #ifndef RETURN_IN_MEMORY | |
f195b57d | 189 | #define RETURN_IN_MEMORY(TYPE) (TYPE_MODE (TYPE) == BLKmode) |
dbb0cd11 | 190 | #endif |
aa4e8f9e | 191 | |
8cda90b9 | 192 | /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. |
193 | Normally move_insn, so Pmode stack pointer. */ | |
194 | ||
195 | #ifndef STACK_SAVEAREA_MODE | |
196 | #define STACK_SAVEAREA_MODE(LEVEL) Pmode | |
197 | #endif | |
198 | ||
3469a3e2 | 199 | /* Supply a default definition of STACK_SIZE_MODE for |
200 | allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ | |
201 | ||
202 | #ifndef STACK_SIZE_MODE | |
203 | #define STACK_SIZE_MODE word_mode | |
204 | #endif | |
205 | ||
aa4e8f9e | 206 | /* Provide default values for the macros controlling stack checking. */ |
207 | ||
208 | #ifndef STACK_CHECK_BUILTIN | |
209 | #define STACK_CHECK_BUILTIN 0 | |
210 | #endif | |
211 | ||
212 | /* The default interval is one page. */ | |
213 | #ifndef STACK_CHECK_PROBE_INTERVAL | |
214 | #define STACK_CHECK_PROBE_INTERVAL 4096 | |
215 | #endif | |
216 | ||
217 | /* The default is to do a store into the stack. */ | |
218 | #ifndef STACK_CHECK_PROBE_LOAD | |
219 | #define STACK_CHECK_PROBE_LOAD 0 | |
220 | #endif | |
221 | ||
222 | /* This value is arbitrary, but should be sufficient for most machines. */ | |
223 | #ifndef STACK_CHECK_PROTECT | |
224 | #define STACK_CHECK_PROTECT (75 * UNITS_PER_WORD) | |
225 | #endif | |
226 | ||
227 | /* Make the maximum frame size be the largest we can and still only need | |
228 | one probe per function. */ | |
229 | #ifndef STACK_CHECK_MAX_FRAME_SIZE | |
230 | #define STACK_CHECK_MAX_FRAME_SIZE \ | |
231 | (STACK_CHECK_PROBE_INTERVAL - UNITS_PER_WORD) | |
232 | #endif | |
233 | ||
234 | /* This is arbitrary, but should be large enough everywhere. */ | |
235 | #ifndef STACK_CHECK_FIXED_FRAME_SIZE | |
236 | #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) | |
237 | #endif | |
238 | ||
239 | /* Provide a reasonable default for the maximum size of an object to | |
240 | allocate in the fixed frame. We may need to be able to make this | |
241 | controllable by the user at some point. */ | |
242 | #ifndef STACK_CHECK_MAX_VAR_SIZE | |
243 | #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) | |
244 | #endif | |
dbb0cd11 | 245 | \f |
d8fc4d0b | 246 | /* Functions from optabs.c, commonly used, and without need for the optabs |
247 | tables: */ | |
dbb0cd11 | 248 | |
ad99e708 | 249 | /* Passed to expand_simple_binop and expand_binop to say which options |
250 | to try to use if the requested operation can't be open-coded on the | |
251 | requisite mode. Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using | |
252 | a library call. Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try | |
253 | using a wider mode. OPTAB_MUST_WIDEN says try widening and don't | |
254 | try anything else. */ | |
255 | ||
256 | enum optab_methods | |
257 | { | |
258 | OPTAB_DIRECT, | |
259 | OPTAB_LIB, | |
260 | OPTAB_WIDEN, | |
261 | OPTAB_LIB_WIDEN, | |
262 | OPTAB_MUST_WIDEN | |
263 | }; | |
264 | ||
265 | /* Generate code for a simple binary or unary operation. "Simple" in | |
266 | this case means "can be unambiguously described by a (mode, code) | |
267 | pair and mapped to a single optab." */ | |
268 | extern rtx expand_simple_binop PARAMS ((enum machine_mode, enum rtx_code, rtx, | |
269 | rtx, rtx, int, enum optab_methods)); | |
270 | extern rtx expand_simple_unop PARAMS ((enum machine_mode, enum rtx_code, | |
271 | rtx, rtx, int)); | |
272 | ||
273 | /* Report whether the machine description contains an insn which can | |
274 | perform the operation described by CODE and MODE. */ | |
275 | extern int have_insn_for PARAMS ((enum rtx_code, enum machine_mode)); | |
276 | ||
ab6d34f7 | 277 | /* Emit code to make a call to a constant function or a library call. */ |
621f6678 | 278 | extern void emit_libcall_block PARAMS ((rtx, rtx, rtx, rtx)); |
dbb0cd11 | 279 | |
d8fc4d0b | 280 | /* Create but don't emit one rtl instruction to perform certain operations. |
281 | Modes must match; operands must meet the operation's predicates. | |
282 | Likewise for subtraction and for just copying. | |
283 | These do not call protect_from_queue; caller must do so. */ | |
284 | extern rtx gen_add2_insn PARAMS ((rtx, rtx)); | |
285 | extern rtx gen_add3_insn PARAMS ((rtx, rtx, rtx)); | |
286 | extern rtx gen_sub2_insn PARAMS ((rtx, rtx)); | |
ad99e708 | 287 | extern rtx gen_sub3_insn PARAMS ((rtx, rtx, rtx)); |
d8fc4d0b | 288 | extern rtx gen_move_insn PARAMS ((rtx, rtx)); |
289 | extern int have_add2_insn PARAMS ((rtx, rtx)); | |
290 | extern int have_sub2_insn PARAMS ((rtx, rtx)); | |
b5479824 | 291 | |
ff385626 | 292 | /* Emit a pair of rtl insns to compare two rtx's and to jump |
989c2a69 | 293 | to a label if the comparison is true. */ |
621f6678 | 294 | extern void emit_cmp_and_jump_insns PARAMS ((rtx, rtx, enum rtx_code, rtx, |
2b96c5f6 | 295 | enum machine_mode, int, rtx)); |
989c2a69 | 296 | |
b5479824 | 297 | /* Generate code to indirectly jump to a location given in the rtx LOC. */ |
621f6678 | 298 | extern void emit_indirect_jump PARAMS ((rtx)); |
b5479824 | 299 | |
2e68a51e | 300 | #ifdef HAVE_conditional_move |
301 | /* Emit a conditional move operation. */ | |
621f6678 | 302 | rtx emit_conditional_move PARAMS ((rtx, enum rtx_code, rtx, rtx, |
303 | enum machine_mode, rtx, rtx, | |
304 | enum machine_mode, int)); | |
2e68a51e | 305 | |
6ef828f9 | 306 | /* Return nonzero if the conditional move is supported. */ |
621f6678 | 307 | int can_conditionally_move_p PARAMS ((enum machine_mode mode)); |
caca85bd | 308 | |
2e68a51e | 309 | #endif |
310 | ||
b5479824 | 311 | \f |
b2d92e37 | 312 | /* Functions from expmed.c: */ |
dbb0cd11 | 313 | |
b5479824 | 314 | /* Arguments MODE, RTX: return an rtx for the negation of that value. |
315 | May emit insns. */ | |
621f6678 | 316 | extern rtx negate_rtx PARAMS ((enum machine_mode, rtx)); |
dbb0cd11 | 317 | |
b5479824 | 318 | /* Expand a logical AND operation. */ |
6de9716c | 319 | extern rtx expand_and PARAMS ((enum machine_mode, rtx, rtx, rtx)); |
dbb0cd11 | 320 | |
b5479824 | 321 | /* Emit a store-flag operation. */ |
621f6678 | 322 | extern rtx emit_store_flag PARAMS ((rtx, enum rtx_code, rtx, rtx, |
323 | enum machine_mode, int, int)); | |
dbb0cd11 | 324 | |
9c4f6a53 | 325 | /* Like emit_store_flag, but always succeeds. */ |
621f6678 | 326 | extern rtx emit_store_flag_force PARAMS ((rtx, enum rtx_code, rtx, rtx, |
327 | enum machine_mode, int, int)); | |
9c4f6a53 | 328 | |
b5479824 | 329 | /* Functions from loop.c: */ |
dbb0cd11 | 330 | |
ff27bca2 | 331 | /* Given an insn and condition, return a canonical description of |
332 | the test being made. */ | |
124d766d | 333 | extern rtx canonicalize_condition PARAMS ((rtx, rtx, int, rtx *, rtx)); |
ff27bca2 | 334 | |
335 | /* Given a JUMP_INSN, return a canonical description of the test | |
336 | being made. */ | |
621f6678 | 337 | extern rtx get_condition PARAMS ((rtx, rtx *)); |
9e5192ed | 338 | |
339 | /* Generate a conditional trap instruction. */ | |
621f6678 | 340 | extern rtx gen_cond_trap PARAMS ((enum rtx_code, rtx, rtx, rtx)); |
b5479824 | 341 | \f |
53800dbe | 342 | /* Functions from builtins.c: */ |
621f6678 | 343 | extern rtx expand_builtin PARAMS ((tree, rtx, rtx, enum machine_mode, int)); |
7df226a2 | 344 | extern void std_expand_builtin_va_start PARAMS ((tree, rtx)); |
621f6678 | 345 | extern rtx std_expand_builtin_va_arg PARAMS ((tree, tree)); |
346 | extern rtx expand_builtin_va_arg PARAMS ((tree, tree)); | |
fc2a2dcb | 347 | extern void default_init_builtins PARAMS ((void)); |
348 | extern rtx default_expand_builtin PARAMS ((tree, rtx, rtx, | |
349 | enum machine_mode, int)); | |
6b7f6858 | 350 | extern void expand_builtin_setjmp_setup PARAMS ((rtx, rtx)); |
351 | extern void expand_builtin_setjmp_receiver PARAMS ((rtx)); | |
621f6678 | 352 | extern void expand_builtin_longjmp PARAMS ((rtx, rtx)); |
353 | extern rtx expand_builtin_saveregs PARAMS ((void)); | |
a0ef1725 | 354 | extern void expand_builtin_trap PARAMS ((void)); |
f7c44134 | 355 | extern HOST_WIDE_INT get_varargs_alias_set PARAMS ((void)); |
356 | extern HOST_WIDE_INT get_frame_alias_set PARAMS ((void)); | |
357 | extern void record_base_value PARAMS ((unsigned int, rtx, int)); | |
358 | extern void record_alias_subset PARAMS ((HOST_WIDE_INT, | |
359 | HOST_WIDE_INT)); | |
f7c44134 | 360 | extern HOST_WIDE_INT new_alias_set PARAMS ((void)); |
5cc193e7 | 361 | extern int can_address_p PARAMS ((tree)); |
53800dbe | 362 | \f |
b5479824 | 363 | /* Functions from expr.c: */ |
fe2ef382 | 364 | |
b5479824 | 365 | /* This is run once per compilation to set up which modes can be used |
366 | directly in memory and to initialize the block move optab. */ | |
621f6678 | 367 | extern void init_expr_once PARAMS ((void)); |
b5479824 | 368 | |
369 | /* This is run at the start of compiling a function. */ | |
621f6678 | 370 | extern void init_expr PARAMS ((void)); |
b5479824 | 371 | |
0a893c29 | 372 | /* This is run at the end of compiling a function. */ |
621f6678 | 373 | extern void finish_expr_for_function PARAMS ((void)); |
0a893c29 | 374 | |
b5479824 | 375 | /* Use protect_from_queue to convert a QUEUED expression |
376 | into something that you can put immediately into an instruction. */ | |
621f6678 | 377 | extern rtx protect_from_queue PARAMS ((rtx, int)); |
b5479824 | 378 | |
379 | /* Perform all the pending incrementations. */ | |
621f6678 | 380 | extern void emit_queue PARAMS ((void)); |
48e52002 | 381 | |
6d2e66f1 | 382 | /* Tell if something has a queued subexpression. */ |
621f6678 | 383 | extern int queued_subexp_p PARAMS ((rtx)); |
6d2e66f1 | 384 | |
dbb0cd11 | 385 | /* Emit some rtl insns to move data between rtx's, converting machine modes. |
386 | Both modes must be floating or both fixed. */ | |
621f6678 | 387 | extern void convert_move PARAMS ((rtx, rtx, int)); |
dbb0cd11 | 388 | |
389 | /* Convert an rtx to specified machine mode and return the result. */ | |
621f6678 | 390 | extern rtx convert_to_mode PARAMS ((enum machine_mode, rtx, int)); |
dbb0cd11 | 391 | |
48e657fd | 392 | /* Convert an rtx to MODE from OLDMODE and return the result. */ |
fe352cf1 | 393 | extern rtx convert_modes PARAMS ((enum machine_mode, enum machine_mode, |
394 | rtx, int)); | |
48e657fd | 395 | |
b2d92e37 | 396 | /* Emit code to move a block Y to a block X. */ |
0378dbdc | 397 | |
398 | enum block_op_methods | |
399 | { | |
400 | BLOCK_OP_NORMAL, | |
401 | BLOCK_OP_CALL_PARM, | |
402 | BLOCK_OP_NO_LIBCALL | |
403 | }; | |
404 | ||
405 | extern rtx emit_block_move PARAMS ((rtx, rtx, rtx, enum block_op_methods)); | |
b5479824 | 406 | |
407 | /* Copy all or part of a value X into registers starting at REGNO. | |
408 | The number of registers to be filled is NREGS. */ | |
621f6678 | 409 | extern void move_block_to_reg PARAMS ((int, rtx, int, enum machine_mode)); |
b5479824 | 410 | |
411 | /* Copy all or part of a BLKmode value X out of registers starting at REGNO. | |
412 | The number of registers to be filled is NREGS. */ | |
621f6678 | 413 | extern void move_block_from_reg PARAMS ((int, rtx, int, int)); |
b5479824 | 414 | |
2dbc68f6 | 415 | /* Load a BLKmode value into non-consecutive registers represented by a |
416 | PARALLEL. */ | |
2c269e73 | 417 | extern void emit_group_load PARAMS ((rtx, rtx, int)); |
fe352cf1 | 418 | |
2dbc68f6 | 419 | /* Store a BLKmode value from non-consecutive registers represented by a |
420 | PARALLEL. */ | |
2c269e73 | 421 | extern void emit_group_store PARAMS ((rtx, rtx, int)); |
2dbc68f6 | 422 | |
25eb0f59 | 423 | #ifdef TREE_CODE |
ab6d34f7 | 424 | /* Copy BLKmode object from a set of registers. */ |
621f6678 | 425 | extern rtx copy_blkmode_from_reg PARAMS ((rtx,rtx,tree)); |
25eb0f59 | 426 | #endif |
427 | ||
14602aee | 428 | /* Mark REG as holding a parameter for the next CALL_INSN. */ |
621f6678 | 429 | extern void use_reg PARAMS ((rtx *, rtx)); |
fe352cf1 | 430 | |
14602aee | 431 | /* Mark NREGS consecutive regs, starting at REGNO, as holding parameters |
432 | for the next CALL_INSN. */ | |
621f6678 | 433 | extern void use_regs PARAMS ((rtx *, int, int)); |
fe352cf1 | 434 | |
2dbc68f6 | 435 | /* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */ |
621f6678 | 436 | extern void use_group_regs PARAMS ((rtx *, rtx)); |
b5479824 | 437 | |
438 | /* Write zeros through the storage of OBJECT. | |
2a631e19 | 439 | If OBJECT has BLKmode, SIZE is its length in bytes. */ |
440 | extern rtx clear_storage PARAMS ((rtx, rtx)); | |
b5479824 | 441 | |
6ef828f9 | 442 | /* Return nonzero if it is desirable to store LEN bytes generated by |
6840589f | 443 | CONSTFUN with several move instructions by store_by_pieces |
444 | function. CONSTFUNDATA is a pointer which will be passed as argument | |
445 | in every CONSTFUN call. | |
446 | ALIGN is maximum alignment we can assume. */ | |
447 | extern int can_store_by_pieces PARAMS ((unsigned HOST_WIDE_INT, | |
448 | rtx (*) (PTR, HOST_WIDE_INT, | |
449 | enum machine_mode), | |
450 | PTR, unsigned int)); | |
451 | ||
452 | /* Generate several move instructions to store LEN bytes generated by | |
453 | CONSTFUN to block TO. (A MEM rtx with BLKmode). CONSTFUNDATA is a | |
454 | pointer which will be passed as argument in every CONSTFUN call. | |
455 | ALIGN is maximum alignment we can assume. */ | |
456 | extern void store_by_pieces PARAMS ((rtx, unsigned HOST_WIDE_INT, | |
457 | rtx (*) (PTR, HOST_WIDE_INT, | |
458 | enum machine_mode), | |
459 | PTR, unsigned int)); | |
460 | ||
b5479824 | 461 | /* Emit insns to set X from Y. */ |
621f6678 | 462 | extern rtx emit_move_insn PARAMS ((rtx, rtx)); |
b5479824 | 463 | |
464 | /* Emit insns to set X from Y, with no frills. */ | |
621f6678 | 465 | extern rtx emit_move_insn_1 PARAMS ((rtx, rtx)); |
b5479824 | 466 | |
467 | /* Push a block of length SIZE (perhaps variable) | |
468 | and return an rtx to address the beginning of the block. */ | |
621f6678 | 469 | extern rtx push_block PARAMS ((rtx, int, int)); |
b5479824 | 470 | |
b5479824 | 471 | #ifdef TREE_CODE |
472 | /* Generate code to push something onto the stack, given its mode and type. */ | |
fe352cf1 | 473 | extern void emit_push_insn PARAMS ((rtx, enum machine_mode, tree, rtx, |
474 | unsigned int, int, rtx, int, rtx, rtx, | |
475 | int, rtx)); | |
b5479824 | 476 | |
ab6d34f7 | 477 | /* Expand an assignment that stores the value of FROM into TO. */ |
621f6678 | 478 | extern rtx expand_assignment PARAMS ((tree, tree, int, int)); |
b5479824 | 479 | |
480 | /* Generate code for computing expression EXP, | |
481 | and storing the value into TARGET. | |
482 | If SUGGEST_REG is nonzero, copy the value through a register | |
483 | and return that register, if that is possible. */ | |
621f6678 | 484 | extern rtx store_expr PARAMS ((tree, rtx, int)); |
b5479824 | 485 | #endif |
dbb0cd11 | 486 | |
487 | /* Given an rtx that may include add and multiply operations, | |
488 | generate them as insns and return a pseudo-reg containing the value. | |
489 | Useful after calling expand_expr with 1 as sum_ok. */ | |
621f6678 | 490 | extern rtx force_operand PARAMS ((rtx, rtx)); |
dbb0cd11 | 491 | |
c3a9c149 | 492 | /* Return an object on the placeholder list that matches EXP, a |
493 | PLACEHOLDER_EXPR. An object "matches" if it is of the type of the | |
96216d37 | 494 | PLACEHOLDER_EXPR or a pointer type to it. For further information, see |
495 | tree.def. If no such object is found, abort. If PLIST is nonzero, it is | |
496 | a location which initially points to a starting location in the | |
497 | placeholder list (zero means start of the list) and where a pointer into | |
498 | the placeholder list at which the object is found is placed. */ | |
c3a9c149 | 499 | extern tree find_placeholder PARAMS ((tree, tree *)); |
500 | ||
b5479824 | 501 | /* Generate code for computing expression EXP. |
502 | An rtx for the computed value is returned. The value is never null. | |
503 | In the case of a void EXP, const0_rtx is returned. */ | |
621f6678 | 504 | extern rtx expand_expr PARAMS ((tree, rtx, enum machine_mode, |
505 | enum expand_modifier)); | |
b5479824 | 506 | |
507 | /* At the start of a function, record that we have no previously-pushed | |
508 | arguments waiting to be popped. */ | |
621f6678 | 509 | extern void init_pending_stack_adjust PARAMS ((void)); |
b5479824 | 510 | |
511 | /* When exiting from function, if safe, clear out any pending stack adjust | |
512 | so the adjustment won't get done. */ | |
621f6678 | 513 | extern void clear_pending_stack_adjust PARAMS ((void)); |
b5479824 | 514 | |
515 | /* Pop any previously-pushed arguments that have not been popped yet. */ | |
621f6678 | 516 | extern void do_pending_stack_adjust PARAMS ((void)); |
b5479824 | 517 | |
518 | #ifdef TREE_CODE | |
53800dbe | 519 | /* Return the tree node and offset if a given argument corresponds to |
520 | a string constant. */ | |
621f6678 | 521 | extern tree string_constant PARAMS ((tree, tree *)); |
53800dbe | 522 | |
b5479824 | 523 | /* Generate code to evaluate EXP and jump to LABEL if the value is zero. */ |
621f6678 | 524 | extern void jumpifnot PARAMS ((tree, rtx)); |
b5479824 | 525 | |
526 | /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */ | |
621f6678 | 527 | extern void jumpif PARAMS ((tree, rtx)); |
b5479824 | 528 | |
529 | /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if | |
530 | the result is zero, or IF_TRUE_LABEL if the result is one. */ | |
621f6678 | 531 | extern void do_jump PARAMS ((tree, rtx, rtx)); |
b5479824 | 532 | #endif |
533 | ||
534 | /* Generate rtl to compare two rtx's, will call emit_cmp_insn. */ | |
621f6678 | 535 | extern rtx compare_from_rtx PARAMS ((rtx, rtx, enum rtx_code, int, |
2b96c5f6 | 536 | enum machine_mode, rtx)); |
621f6678 | 537 | extern void do_compare_rtx_and_jump PARAMS ((rtx, rtx, enum rtx_code, int, |
fe352cf1 | 538 | enum machine_mode, rtx, |
2b96c5f6 | 539 | rtx, rtx)); |
b5479824 | 540 | |
539a3a92 | 541 | /* Two different ways of generating switch statements. */ |
542 | extern int try_casesi PARAMS ((tree, tree, tree, tree, rtx, rtx)); | |
543 | extern int try_tablejump PARAMS ((tree, tree, tree, tree, rtx, rtx)); | |
544 | ||
545 | /* Smallest number of adjacent cases before we use a jump table. | |
546 | XXX Should be a target hook. */ | |
547 | extern unsigned int case_values_threshold PARAMS ((void)); | |
548 | ||
b5479824 | 549 | \f |
fe2ef382 | 550 | #ifdef TREE_CODE |
551 | /* rtl.h and tree.h were included. */ | |
552 | /* Return an rtx for the size in bytes of the value of an expr. */ | |
621f6678 | 553 | extern rtx expr_size PARAMS ((tree)); |
fe2ef382 | 554 | |
e7971c00 | 555 | /* Return a wide integer for the size in bytes of the value of EXP, or -1 |
556 | if the size can vary or is larger than an integer. */ | |
557 | extern HOST_WIDE_INT int_expr_size PARAMS ((tree)); | |
558 | ||
621f6678 | 559 | extern rtx lookup_static_chain PARAMS ((tree)); |
fe2ef382 | 560 | |
561 | /* Convert a stack slot address ADDR valid in function FNDECL | |
562 | into an address valid in this function (using a static chain). */ | |
621f6678 | 563 | extern rtx fix_lexical_addr PARAMS ((rtx, tree)); |
fe2ef382 | 564 | |
565 | /* Return the address of the trampoline for entering nested fn FUNCTION. */ | |
621f6678 | 566 | extern rtx trampoline_address PARAMS ((tree)); |
fe2ef382 | 567 | |
568 | /* Return an rtx that refers to the value returned by a function | |
569 | in its original home. This becomes invalid if any more code is emitted. */ | |
621f6678 | 570 | extern rtx hard_function_value PARAMS ((tree, tree, int)); |
fe2ef382 | 571 | |
707ff8b1 | 572 | extern rtx prepare_call_address PARAMS ((rtx, tree, rtx *, int, int)); |
fe2ef382 | 573 | |
621f6678 | 574 | extern rtx expand_call PARAMS ((tree, rtx, int)); |
fe2ef382 | 575 | |
f7c44134 | 576 | extern rtx expand_shift PARAMS ((enum tree_code, enum machine_mode, rtx, tree, |
577 | rtx, int)); | |
578 | extern rtx expand_divmod PARAMS ((int, enum tree_code, enum machine_mode, rtx, | |
579 | rtx, rtx, int)); | |
580 | extern void locate_and_pad_parm PARAMS ((enum machine_mode, tree, int, tree, | |
581 | struct args_size *, | |
582 | struct args_size *, | |
583 | struct args_size *, | |
584 | struct args_size *)); | |
621f6678 | 585 | extern rtx expand_inline_function PARAMS ((tree, tree, rtx, int, tree, rtx)); |
f7c44134 | 586 | |
fe2ef382 | 587 | /* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */ |
621f6678 | 588 | extern rtx label_rtx PARAMS ((tree)); |
fe2ef382 | 589 | #endif |
590 | ||
5c1270d1 | 591 | /* Indicate how an input argument register was promoted. */ |
02e7a332 | 592 | extern rtx promoted_input_arg PARAMS ((unsigned int, enum machine_mode *, |
593 | int *)); | |
5c1270d1 | 594 | |
dbb0cd11 | 595 | /* Return an rtx like arg but sans any constant terms. |
596 | Returns the original rtx if it has no constant terms. | |
597 | The constant terms are added and stored via a second arg. */ | |
621f6678 | 598 | extern rtx eliminate_constant_term PARAMS ((rtx, rtx *)); |
dbb0cd11 | 599 | |
600 | /* Convert arg to a valid memory address for specified machine mode, | |
601 | by emitting insns to perform arithmetic if nec. */ | |
621f6678 | 602 | extern rtx memory_address PARAMS ((enum machine_mode, rtx)); |
dbb0cd11 | 603 | |
604 | /* Like `memory_address' but pretent `flag_force_addr' is 0. */ | |
621f6678 | 605 | extern rtx memory_address_noforce PARAMS ((enum machine_mode, rtx)); |
dbb0cd11 | 606 | |
c6259b83 | 607 | /* Set the alias set of MEM to SET. */ |
608 | extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT)); | |
609 | ||
1c4512da | 610 | /* Set the alignment of MEM to ALIGN bits. */ |
96216d37 | 611 | extern void set_mem_align PARAMS ((rtx, unsigned int)); |
612 | ||
b10dbbca | 613 | /* Set the expr for MEM to EXPR. */ |
614 | extern void set_mem_expr PARAMS ((rtx, tree)); | |
615 | ||
616 | /* Set the offset for MEM to OFFSET. */ | |
617 | extern void set_mem_offset PARAMS ((rtx, rtx)); | |
278fe152 | 618 | |
f0500469 | 619 | /* Set the size for MEM to SIZE. */ |
620 | extern void set_mem_size PARAMS ((rtx, rtx)); | |
621 | ||
dbb0cd11 | 622 | /* Return a memory reference like MEMREF, but with its mode changed |
623 | to MODE and its address changed to ADDR. | |
624 | (VOIDmode means don't change the mode. | |
96216d37 | 625 | NULL for ADDR means don't change the address.) */ |
626 | extern rtx change_address PARAMS ((rtx, enum machine_mode, rtx)); | |
dbb0cd11 | 627 | |
e513d163 | 628 | /* Return a memory reference like MEMREF, but with its mode changed |
629 | to MODE and its address offset by OFFSET bytes. */ | |
96216d37 | 630 | #define adjust_address(MEMREF, MODE, OFFSET) \ |
7e3791cb | 631 | adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1) |
e513d163 | 632 | |
e4e86ec5 | 633 | /* Likewise, but the reference is not required to be valid. */ |
96216d37 | 634 | #define adjust_address_nv(MEMREF, MODE, OFFSET) \ |
7e3791cb | 635 | adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1) |
636 | ||
637 | /* Return a memory reference like MEMREF, but with its mode changed | |
638 | to MODE and its address changed to ADDR, which is assumed to be | |
639 | increased by OFFSET bytes from MEMREF. */ | |
640 | #define adjust_automodify_address(MEMREF, MODE, ADDR, OFFSET) \ | |
641 | adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 1) | |
642 | ||
643 | /* Likewise, but the reference is not required to be valid. */ | |
644 | #define adjust_automodify_address_nv(MEMREF, MODE, ADDR, OFFSET) \ | |
645 | adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 0) | |
96216d37 | 646 | |
647 | extern rtx adjust_address_1 PARAMS ((rtx, enum machine_mode, HOST_WIDE_INT, | |
7e3791cb | 648 | int, int)); |
649 | extern rtx adjust_automodify_address_1 PARAMS ((rtx, enum machine_mode, | |
650 | rtx, HOST_WIDE_INT, int)); | |
e4e86ec5 | 651 | |
fcdc122e | 652 | /* Return a memory reference like MEMREF, but whose address is changed by |
653 | adding OFFSET, an RTX, to it. POW2 is the highest power of two factor | |
654 | known to be in OFFSET (possibly 1). */ | |
655 | extern rtx offset_address PARAMS ((rtx, rtx, HOST_WIDE_INT)); | |
656 | ||
537ffcfc | 657 | /* Return a memory reference like MEMREF, but with its address changed to |
658 | ADDR. The caller is asserting that the actual piece of memory pointed | |
659 | to is the same, just the form of the address is being changed, such as | |
660 | by putting something into a register. */ | |
661 | extern rtx replace_equiv_address PARAMS ((rtx, rtx)); | |
662 | ||
e4e86ec5 | 663 | /* Likewise, but the reference is not required to be valid. */ |
664 | extern rtx replace_equiv_address_nv PARAMS ((rtx, rtx)); | |
665 | ||
8259ab07 | 666 | /* Return a memory reference like MEMREF, but with its mode widened to |
667 | MODE and adjusted by OFFSET. */ | |
668 | extern rtx widen_memory_access PARAMS ((rtx, enum machine_mode, HOST_WIDE_INT)); | |
669 | ||
dbb0cd11 | 670 | /* Return a memory reference like MEMREF, but which is known to have a |
671 | valid address. */ | |
621f6678 | 672 | extern rtx validize_mem PARAMS ((rtx)); |
dbb0cd11 | 673 | |
f7c44134 | 674 | #ifdef TREE_CODE |
16f01771 | 675 | /* Given REF, either a MEM or a REG, and T, either the type of X or |
676 | the expression corresponding to REF, set RTX_UNCHANGING_P if | |
677 | appropriate. */ | |
678 | extern void maybe_set_unchanging PARAMS ((rtx, tree)); | |
679 | ||
f7c44134 | 680 | /* Given REF, a MEM, and T, either the type of X or the expression |
681 | corresponding to REF, set the memory attributes. OBJECTP is nonzero | |
682 | if we are making a new object of this type. */ | |
683 | extern void set_mem_attributes PARAMS ((rtx, tree, int)); | |
6f717f77 | 684 | |
685 | /* Similar, except that BITPOS has not yet been applied to REF, so if | |
686 | we alter MEM_OFFSET according to T then we should subtract BITPOS | |
687 | expecting that it'll be added back in later. */ | |
688 | extern void set_mem_attributes_minus_bitpos PARAMS ((rtx, tree, int, | |
689 | HOST_WIDE_INT)); | |
f7c44134 | 690 | #endif |
691 | ||
dbb0cd11 | 692 | /* Assemble the static constant template for function entry trampolines. */ |
621f6678 | 693 | extern rtx assemble_trampoline_template PARAMS ((void)); |
dbb0cd11 | 694 | |
dbb0cd11 | 695 | /* Given rtx, return new rtx whose address won't be affected by |
696 | any side effects. It has been copied to a new temporary reg. */ | |
621f6678 | 697 | extern rtx stabilize PARAMS ((rtx)); |
dbb0cd11 | 698 | |
699 | /* Given an rtx, copy all regs it refers to into new temps | |
700 | and return a modified copy that refers to the new temps. */ | |
621f6678 | 701 | extern rtx copy_all_regs PARAMS ((rtx)); |
dbb0cd11 | 702 | |
703 | /* Copy given rtx to a new temp reg and return that. */ | |
621f6678 | 704 | extern rtx copy_to_reg PARAMS ((rtx)); |
dbb0cd11 | 705 | |
706 | /* Like copy_to_reg but always make the reg Pmode. */ | |
621f6678 | 707 | extern rtx copy_addr_to_reg PARAMS ((rtx)); |
dbb0cd11 | 708 | |
709 | /* Like copy_to_reg but always make the reg the specified mode MODE. */ | |
621f6678 | 710 | extern rtx copy_to_mode_reg PARAMS ((enum machine_mode, rtx)); |
dbb0cd11 | 711 | |
712 | /* Copy given rtx to given temp reg and return that. */ | |
621f6678 | 713 | extern rtx copy_to_suggested_reg PARAMS ((rtx, rtx, enum machine_mode)); |
dbb0cd11 | 714 | |
715 | /* Copy a value to a register if it isn't already a register. | |
716 | Args are mode (in case value is a constant) and the value. */ | |
621f6678 | 717 | extern rtx force_reg PARAMS ((enum machine_mode, rtx)); |
dbb0cd11 | 718 | |
719 | /* Return given rtx, copied into a new temp reg if it was in memory. */ | |
621f6678 | 720 | extern rtx force_not_mem PARAMS ((rtx)); |
dbb0cd11 | 721 | |
42cc9be0 | 722 | #ifdef TREE_CODE |
723 | /* Return mode and signedness to use when object is promoted. */ | |
621f6678 | 724 | extern enum machine_mode promote_mode PARAMS ((tree, enum machine_mode, |
725 | int *, int)); | |
42cc9be0 | 726 | #endif |
727 | ||
dbb0cd11 | 728 | /* Remove some bytes from the stack. An rtx says how many. */ |
621f6678 | 729 | extern void adjust_stack PARAMS ((rtx)); |
dbb0cd11 | 730 | |
731 | /* Add some bytes to the stack. An rtx says how many. */ | |
621f6678 | 732 | extern void anti_adjust_stack PARAMS ((rtx)); |
dbb0cd11 | 733 | |
dbd6697a | 734 | /* This enum is used for the following two functions. */ |
735 | enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL}; | |
736 | ||
737 | /* Save the stack pointer at the specified level. */ | |
621f6678 | 738 | extern void emit_stack_save PARAMS ((enum save_level, rtx *, rtx)); |
dbd6697a | 739 | |
740 | /* Restore the stack pointer from a save area of the specified level. */ | |
621f6678 | 741 | extern void emit_stack_restore PARAMS ((enum save_level, rtx, rtx)); |
dbd6697a | 742 | |
dbb0cd11 | 743 | /* Allocate some space on the stack dynamically and return its address. An rtx |
744 | says how many bytes. */ | |
621f6678 | 745 | extern rtx allocate_dynamic_stack_space PARAMS ((rtx, rtx, int)); |
dbb0cd11 | 746 | |
ff385626 | 747 | /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. |
aa4e8f9e | 748 | FIRST is a constant and size is a Pmode RTX. These are offsets from the |
749 | current stack pointer. STACK_GROWS_DOWNWARD says whether to add or | |
750 | subtract from the stack. If SIZE is constant, this is done | |
751 | with a fixed number of probes. Otherwise, we must make a loop. */ | |
621f6678 | 752 | extern void probe_stack_range PARAMS ((HOST_WIDE_INT, rtx)); |
aa4e8f9e | 753 | |
dbb0cd11 | 754 | /* Return an rtx that refers to the value returned by a library call |
755 | in its original home. This becomes invalid if any more code is emitted. */ | |
621f6678 | 756 | extern rtx hard_libcall_value PARAMS ((enum machine_mode)); |
dbb0cd11 | 757 | |
dbb0cd11 | 758 | /* Given an rtx, return an rtx for a value rounded up to a multiple |
759 | of STACK_BOUNDARY / BITS_PER_UNIT. */ | |
621f6678 | 760 | extern rtx round_push PARAMS ((rtx)); |
dbb0cd11 | 761 | |
9068af20 | 762 | /* Return the mode desired by operand N of a particular bitfield |
763 | insert/extract insn, or MAX_MACHINE_MODE if no such insn is | |
764 | available. */ | |
765 | ||
766 | enum extraction_pattern { EP_insv, EP_extv, EP_extzv }; | |
767 | extern enum machine_mode | |
768 | mode_for_extraction PARAMS ((enum extraction_pattern, int)); | |
769 | ||
02e7a332 | 770 | extern rtx store_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT, |
771 | unsigned HOST_WIDE_INT, | |
2c269e73 | 772 | enum machine_mode, rtx, HOST_WIDE_INT)); |
02e7a332 | 773 | extern rtx extract_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT, |
774 | unsigned HOST_WIDE_INT, int, rtx, | |
fe352cf1 | 775 | enum machine_mode, enum machine_mode, |
2c269e73 | 776 | HOST_WIDE_INT)); |
621f6678 | 777 | extern rtx expand_mult PARAMS ((enum machine_mode, rtx, rtx, rtx, int)); |
9ae13cc6 | 778 | extern bool const_mult_add_overflow_p PARAMS ((rtx, rtx, rtx, enum machine_mode, int)); |
621f6678 | 779 | extern rtx expand_mult_add PARAMS ((rtx, rtx, rtx, rtx,enum machine_mode, int)); |
780 | extern rtx expand_mult_highpart_adjust PARAMS ((enum machine_mode, rtx, rtx, rtx, rtx, int)); | |
dbb0cd11 | 781 | |
621f6678 | 782 | extern rtx assemble_static_space PARAMS ((int)); |
dbb0cd11 | 783 | |
784 | /* Hook called by expand_expr for language-specific tree codes. | |
785 | It is up to the language front end to install a hook | |
786 | if it has any such codes that expand_expr needs to know about. */ | |
621f6678 | 787 | extern rtx (*lang_expand_expr) PARAMS ((union tree_node *, rtx, |
788 | enum machine_mode, | |
789 | enum expand_modifier modifier)); | |
5b4150fc | 790 | |
e41f0d80 | 791 | extern int safe_from_p PARAMS ((rtx, tree, int)); |
792 | ||
d8fc4d0b | 793 | /* Call this once to initialize the contents of the optabs |
794 | appropriately for the current target machine. */ | |
795 | extern void init_optabs PARAMS ((void)); | |
621f6678 | 796 | extern void init_all_optabs PARAMS ((void)); |
d8fc4d0b | 797 | |
798 | /* Call this to initialize an optab function entry. */ | |
799 | extern rtx init_one_libfunc PARAMS ((const char *)); | |
800 | ||
621f6678 | 801 | extern void do_jump_by_parts_equality_rtx PARAMS ((rtx, rtx, rtx)); |
802 | extern void do_jump_by_parts_greater_rtx PARAMS ((enum machine_mode, | |
803 | int, rtx, rtx, rtx, | |
804 | rtx)); | |
57a54889 | 805 | |
5dba877e | 806 | #ifdef TREE_CODE /* Don't lose if tree.h not included. */ |
621f6678 | 807 | extern void mark_seen_cases PARAMS ((tree, unsigned char *, |
02e7a332 | 808 | HOST_WIDE_INT, int)); |
5dba877e | 809 | #endif |
ead34f59 | 810 | |
811 | extern int vector_mode_valid_p PARAMS ((enum machine_mode)); |