]>
Commit | Line | Data |
---|---|---|
e8bbfc4e | 1 | /* Definitions for code generation pass of GNU compiler. |
ef58a523 JL |
2 | Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000 Free Software Foundation, Inc. | |
e8bbfc4e | 4 | |
1322177d | 5 | This file is part of GCC. |
e8bbfc4e | 6 | |
1322177d LB |
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. | |
e8bbfc4e | 11 | |
1322177d LB |
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. | |
e8bbfc4e RK |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
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. */ | |
e8bbfc4e | 21 | |
e8bbfc4e RK |
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 | |
41b083c4 R |
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. */ | |
e8bbfc4e RK |
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 | |
99b5da08 | 50 | is a constant that is not a legitimate address. |
37a08a29 RK |
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}; | |
e8bbfc4e | 54 | |
5c7a310f MM |
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) | |
e8bbfc4e RK |
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 | |
fed3cef0 RK |
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. */ | |
e8bbfc4e RK |
68 | |
69 | struct args_size | |
70 | { | |
e5e809f4 | 71 | HOST_WIDE_INT constant; |
e8bbfc4e RK |
72 | tree var; |
73 | }; | |
74 | #endif | |
75 | ||
76 | /* Add the value of the tree INC to the `struct args_size' TO. */ | |
77 | ||
82cf684b RH |
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) \ | |
361ea006 | 84 | (TO).var = convert (ssizetype, inc); \ |
82cf684b RH |
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) | |
e8bbfc4e | 102 | |
fed3cef0 RK |
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) \ | |
f322b423 RH |
107 | : size_binop (PLUS_EXPR, convert (ssizetype, (SIZE).var), \ |
108 | ssize_int ((SIZE).constant))) | |
fed3cef0 | 109 | |
e8bbfc4e | 110 | /* Convert the implicit sum in a `struct args_size' into an rtx. */ |
fed3cef0 RK |
111 | #define ARGS_SIZE_RTX(SIZE) \ |
112 | ((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \ | |
37a08a29 | 113 | : expand_expr (ARGS_SIZE_TREE (SIZE), NULL_RTX, VOIDmode, 0)) |
e8bbfc4e RK |
114 | |
115 | /* Supply a default definition for FUNCTION_ARG_PADDING: | |
355b2097 | 116 | usually pad upward, but pad short args downward on |
e8bbfc4e RK |
117 | big-endian machines. */ |
118 | ||
119 | enum direction {none, upward, downward}; /* Value has this type. */ | |
120 | ||
121 | #ifndef FUNCTION_ARG_PADDING | |
e8bbfc4e | 122 | #define FUNCTION_ARG_PADDING(MODE, TYPE) \ |
f76b9db2 ILT |
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)) | |
e8bbfc4e RK |
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. */ | |
0fb7aeda | 135 | |
e8bbfc4e RK |
136 | #ifndef FUNCTION_ARG_BOUNDARY |
137 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) PARM_BOUNDARY | |
138 | #endif | |
139 | ||
e5e809f4 JL |
140 | /* Provide a default value for STRICT_ARGUMENT_NAMING. */ |
141 | #ifndef STRICT_ARGUMENT_NAMING | |
142 | #define STRICT_ARGUMENT_NAMING 0 | |
143 | #endif | |
144 | ||
9ab70a9b R |
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 | ||
e8bbfc4e RK |
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 | |
e7cf2d7e RK |
163 | would put it into the wrong part of the register. |
164 | ||
14a8d078 | 165 | Which padding can't be supported depends on the byte endianness. |
e8bbfc4e | 166 | |
e7cf2d7e | 167 | A value in a register is implicitly padded at the most significant end. |
e8bbfc4e RK |
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 | ||
d9a4ee00 | 172 | #ifndef MUST_PASS_IN_STACK |
e8bbfc4e RK |
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 \ | |
6fb713ce RK |
178 | && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ |
179 | && 0 == (int_size_in_bytes (TYPE) \ | |
180 | % (PARM_BOUNDARY / BITS_PER_UNIT))) \ | |
e8bbfc4e | 181 | && (FUNCTION_ARG_PADDING (MODE, TYPE) \ |
f76b9db2 | 182 | == (BYTES_BIG_ENDIAN ? upward : downward))))) |
d9a4ee00 | 183 | #endif |
e8bbfc4e | 184 | |
e14fa9c4 | 185 | /* Nonzero if type TYPE should be returned in memory. |
e8bbfc4e RK |
186 | Most machines can use the following default definition. */ |
187 | ||
188 | #ifndef RETURN_IN_MEMORY | |
e14fa9c4 | 189 | #define RETURN_IN_MEMORY(TYPE) (TYPE_MODE (TYPE) == BLKmode) |
e8bbfc4e | 190 | #endif |
f7761c9a | 191 | |
a260abc9 DE |
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 | ||
39403d82 DE |
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 | ||
f7761c9a RK |
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 | |
e8bbfc4e | 245 | \f |
e78d8e51 ZW |
246 | /* Functions from optabs.c, commonly used, and without need for the optabs |
247 | tables: */ | |
e8bbfc4e | 248 | |
ef89d648 ZW |
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 | ||
19eb1ad7 | 277 | /* Emit code to make a call to a constant function or a library call. */ |
711d877c | 278 | extern void emit_libcall_block PARAMS ((rtx, rtx, rtx, rtx)); |
e8bbfc4e | 279 | |
e78d8e51 ZW |
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)); | |
ef89d648 | 287 | extern rtx gen_sub3_insn PARAMS ((rtx, rtx, rtx)); |
e78d8e51 ZW |
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)); | |
12e74c9e | 291 | |
0fb7aeda | 292 | /* Emit a pair of rtl insns to compare two rtx's and to jump |
362cc3d4 | 293 | to a label if the comparison is true. */ |
711d877c | 294 | extern void emit_cmp_and_jump_insns PARAMS ((rtx, rtx, enum rtx_code, rtx, |
a06ef755 | 295 | enum machine_mode, int, rtx)); |
362cc3d4 | 296 | |
12e74c9e | 297 | /* Generate code to indirectly jump to a location given in the rtx LOC. */ |
711d877c | 298 | extern void emit_indirect_jump PARAMS ((rtx)); |
12e74c9e | 299 | |
423933c2 DE |
300 | #ifdef HAVE_conditional_move |
301 | /* Emit a conditional move operation. */ | |
711d877c KG |
302 | rtx emit_conditional_move PARAMS ((rtx, enum rtx_code, rtx, rtx, |
303 | enum machine_mode, rtx, rtx, | |
304 | enum machine_mode, int)); | |
423933c2 DE |
305 | |
306 | /* Return non-zero if the conditional move is supported. */ | |
711d877c | 307 | int can_conditionally_move_p PARAMS ((enum machine_mode mode)); |
e9576d2c | 308 | |
423933c2 DE |
309 | #endif |
310 | ||
12e74c9e | 311 | \f |
bda63bf1 | 312 | /* Functions from expmed.c: */ |
e8bbfc4e | 313 | |
12e74c9e RK |
314 | /* Arguments MODE, RTX: return an rtx for the negation of that value. |
315 | May emit insns. */ | |
711d877c | 316 | extern rtx negate_rtx PARAMS ((enum machine_mode, rtx)); |
e8bbfc4e | 317 | |
12e74c9e | 318 | /* Expand a logical AND operation. */ |
22273300 | 319 | extern rtx expand_and PARAMS ((enum machine_mode, rtx, rtx, rtx)); |
e8bbfc4e | 320 | |
12e74c9e | 321 | /* Emit a store-flag operation. */ |
711d877c KG |
322 | extern rtx emit_store_flag PARAMS ((rtx, enum rtx_code, rtx, rtx, |
323 | enum machine_mode, int, int)); | |
e8bbfc4e | 324 | |
c0eccde6 | 325 | /* Like emit_store_flag, but always succeeds. */ |
711d877c KG |
326 | extern rtx emit_store_flag_force PARAMS ((rtx, enum rtx_code, rtx, rtx, |
327 | enum machine_mode, int, int)); | |
c0eccde6 | 328 | |
12e74c9e | 329 | /* Functions from loop.c: */ |
e8bbfc4e | 330 | |
a49a6a68 JW |
331 | /* Given an insn and condition, return a canonical description of |
332 | the test being made. */ | |
10f13594 | 333 | extern rtx canonicalize_condition PARAMS ((rtx, rtx, int, rtx *, rtx)); |
a49a6a68 JW |
334 | |
335 | /* Given a JUMP_INSN, return a canonical description of the test | |
336 | being made. */ | |
711d877c | 337 | extern rtx get_condition PARAMS ((rtx, rtx *)); |
e0cd0770 JC |
338 | |
339 | /* Generate a conditional trap instruction. */ | |
711d877c | 340 | extern rtx gen_cond_trap PARAMS ((enum rtx_code, rtx, rtx, rtx)); |
12e74c9e | 341 | \f |
28f4ec01 | 342 | /* Functions from builtins.c: */ |
711d877c KG |
343 | extern rtx expand_builtin PARAMS ((tree, rtx, rtx, enum machine_mode, int)); |
344 | extern void std_expand_builtin_va_start PARAMS ((int, tree, rtx)); | |
345 | extern rtx std_expand_builtin_va_arg PARAMS ((tree, tree)); | |
346 | extern rtx expand_builtin_va_arg PARAMS ((tree, tree)); | |
f6155fda SS |
347 | extern void default_init_builtins PARAMS ((void)); |
348 | extern rtx default_expand_builtin PARAMS ((tree, rtx, rtx, | |
349 | enum machine_mode, int)); | |
250d07b6 RH |
350 | extern void expand_builtin_setjmp_setup PARAMS ((rtx, rtx)); |
351 | extern void expand_builtin_setjmp_receiver PARAMS ((rtx)); | |
711d877c KG |
352 | extern void expand_builtin_longjmp PARAMS ((rtx, rtx)); |
353 | extern rtx expand_builtin_saveregs PARAMS ((void)); | |
9602f5a0 | 354 | extern void expand_builtin_trap PARAMS ((void)); |
3bdf5ad1 RK |
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)); | |
3bdf5ad1 | 360 | extern HOST_WIDE_INT new_alias_set PARAMS ((void)); |
10b76d73 | 361 | extern int can_address_p PARAMS ((tree)); |
28f4ec01 | 362 | \f |
12e74c9e | 363 | /* Functions from expr.c: */ |
cb411bd6 | 364 | |
12e74c9e RK |
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. */ | |
711d877c | 367 | extern void init_expr_once PARAMS ((void)); |
12e74c9e RK |
368 | |
369 | /* This is run at the start of compiling a function. */ | |
711d877c | 370 | extern void init_expr PARAMS ((void)); |
12e74c9e | 371 | |
49ad7cfa | 372 | /* This is run at the end of compiling a function. */ |
711d877c | 373 | extern void finish_expr_for_function PARAMS ((void)); |
49ad7cfa | 374 | |
12e74c9e RK |
375 | /* Use protect_from_queue to convert a QUEUED expression |
376 | into something that you can put immediately into an instruction. */ | |
711d877c | 377 | extern rtx protect_from_queue PARAMS ((rtx, int)); |
12e74c9e RK |
378 | |
379 | /* Perform all the pending incrementations. */ | |
711d877c | 380 | extern void emit_queue PARAMS ((void)); |
b4cb4994 | 381 | |
1f06ee8d | 382 | /* Tell if something has a queued subexpression. */ |
711d877c | 383 | extern int queued_subexp_p PARAMS ((rtx)); |
1f06ee8d | 384 | |
e8bbfc4e RK |
385 | /* Emit some rtl insns to move data between rtx's, converting machine modes. |
386 | Both modes must be floating or both fixed. */ | |
711d877c | 387 | extern void convert_move PARAMS ((rtx, rtx, int)); |
e8bbfc4e RK |
388 | |
389 | /* Convert an rtx to specified machine mode and return the result. */ | |
711d877c | 390 | extern rtx convert_to_mode PARAMS ((enum machine_mode, rtx, int)); |
e8bbfc4e | 391 | |
3fad11c9 | 392 | /* Convert an rtx to MODE from OLDMODE and return the result. */ |
729a2125 RK |
393 | extern rtx convert_modes PARAMS ((enum machine_mode, enum machine_mode, |
394 | rtx, int)); | |
3fad11c9 | 395 | |
bda63bf1 | 396 | /* Emit code to move a block Y to a block X. */ |
8ac61af7 | 397 | extern rtx emit_block_move PARAMS ((rtx, rtx, rtx)); |
12e74c9e RK |
398 | |
399 | /* Copy all or part of a value X into registers starting at REGNO. | |
400 | The number of registers to be filled is NREGS. */ | |
711d877c | 401 | extern void move_block_to_reg PARAMS ((int, rtx, int, enum machine_mode)); |
12e74c9e RK |
402 | |
403 | /* Copy all or part of a BLKmode value X out of registers starting at REGNO. | |
404 | The number of registers to be filled is NREGS. */ | |
711d877c | 405 | extern void move_block_from_reg PARAMS ((int, rtx, int, int)); |
12e74c9e | 406 | |
ae73d3be JW |
407 | /* Load a BLKmode value into non-consecutive registers represented by a |
408 | PARALLEL. */ | |
04050c69 | 409 | extern void emit_group_load PARAMS ((rtx, rtx, int)); |
729a2125 | 410 | |
ae73d3be JW |
411 | /* Store a BLKmode value from non-consecutive registers represented by a |
412 | PARALLEL. */ | |
04050c69 | 413 | extern void emit_group_store PARAMS ((rtx, rtx, int)); |
ae73d3be | 414 | |
c36fce9a | 415 | #ifdef TREE_CODE |
19eb1ad7 | 416 | /* Copy BLKmode object from a set of registers. */ |
711d877c | 417 | extern rtx copy_blkmode_from_reg PARAMS ((rtx,rtx,tree)); |
c36fce9a GRK |
418 | #endif |
419 | ||
8c99eaf6 | 420 | /* Mark REG as holding a parameter for the next CALL_INSN. */ |
711d877c | 421 | extern void use_reg PARAMS ((rtx *, rtx)); |
729a2125 | 422 | |
8c99eaf6 RK |
423 | /* Mark NREGS consecutive regs, starting at REGNO, as holding parameters |
424 | for the next CALL_INSN. */ | |
711d877c | 425 | extern void use_regs PARAMS ((rtx *, int, int)); |
729a2125 | 426 | |
ae73d3be | 427 | /* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */ |
711d877c | 428 | extern void use_group_regs PARAMS ((rtx *, rtx)); |
12e74c9e RK |
429 | |
430 | /* Write zeros through the storage of OBJECT. | |
8ac61af7 RK |
431 | If OBJECT has BLKmode, SIZE is its length in bytes. */ |
432 | extern rtx clear_storage PARAMS ((rtx, rtx)); | |
12e74c9e | 433 | |
57814e5e JJ |
434 | /* Return non-zero if it is desirable to store LEN bytes generated by |
435 | CONSTFUN with several move instructions by store_by_pieces | |
436 | function. CONSTFUNDATA is a pointer which will be passed as argument | |
437 | in every CONSTFUN call. | |
438 | ALIGN is maximum alignment we can assume. */ | |
439 | extern int can_store_by_pieces PARAMS ((unsigned HOST_WIDE_INT, | |
440 | rtx (*) (PTR, HOST_WIDE_INT, | |
441 | enum machine_mode), | |
442 | PTR, unsigned int)); | |
443 | ||
444 | /* Generate several move instructions to store LEN bytes generated by | |
445 | CONSTFUN to block TO. (A MEM rtx with BLKmode). CONSTFUNDATA is a | |
446 | pointer which will be passed as argument in every CONSTFUN call. | |
447 | ALIGN is maximum alignment we can assume. */ | |
448 | extern void store_by_pieces PARAMS ((rtx, unsigned HOST_WIDE_INT, | |
449 | rtx (*) (PTR, HOST_WIDE_INT, | |
450 | enum machine_mode), | |
451 | PTR, unsigned int)); | |
452 | ||
12e74c9e | 453 | /* Emit insns to set X from Y. */ |
711d877c | 454 | extern rtx emit_move_insn PARAMS ((rtx, rtx)); |
12e74c9e RK |
455 | |
456 | /* Emit insns to set X from Y, with no frills. */ | |
711d877c | 457 | extern rtx emit_move_insn_1 PARAMS ((rtx, rtx)); |
12e74c9e RK |
458 | |
459 | /* Push a block of length SIZE (perhaps variable) | |
460 | and return an rtx to address the beginning of the block. */ | |
711d877c | 461 | extern rtx push_block PARAMS ((rtx, int, int)); |
12e74c9e | 462 | |
12e74c9e RK |
463 | #ifdef TREE_CODE |
464 | /* Generate code to push something onto the stack, given its mode and type. */ | |
729a2125 RK |
465 | extern void emit_push_insn PARAMS ((rtx, enum machine_mode, tree, rtx, |
466 | unsigned int, int, rtx, int, rtx, rtx, | |
467 | int, rtx)); | |
12e74c9e | 468 | |
19eb1ad7 | 469 | /* Expand an assignment that stores the value of FROM into TO. */ |
711d877c | 470 | extern rtx expand_assignment PARAMS ((tree, tree, int, int)); |
12e74c9e RK |
471 | |
472 | /* Generate code for computing expression EXP, | |
473 | and storing the value into TARGET. | |
474 | If SUGGEST_REG is nonzero, copy the value through a register | |
475 | and return that register, if that is possible. */ | |
711d877c | 476 | extern rtx store_expr PARAMS ((tree, rtx, int)); |
12e74c9e | 477 | #endif |
e8bbfc4e RK |
478 | |
479 | /* Given an rtx that may include add and multiply operations, | |
480 | generate them as insns and return a pseudo-reg containing the value. | |
481 | Useful after calling expand_expr with 1 as sum_ok. */ | |
711d877c | 482 | extern rtx force_operand PARAMS ((rtx, rtx)); |
e8bbfc4e | 483 | |
f47e9b4e RK |
484 | /* Return an object on the placeholder list that matches EXP, a |
485 | PLACEHOLDER_EXPR. An object "matches" if it is of the type of the | |
738cc472 RK |
486 | PLACEHOLDER_EXPR or a pointer type to it. For further information, see |
487 | tree.def. If no such object is found, abort. If PLIST is nonzero, it is | |
488 | a location which initially points to a starting location in the | |
489 | placeholder list (zero means start of the list) and where a pointer into | |
490 | the placeholder list at which the object is found is placed. */ | |
f47e9b4e RK |
491 | extern tree find_placeholder PARAMS ((tree, tree *)); |
492 | ||
12e74c9e RK |
493 | /* Generate code for computing expression EXP. |
494 | An rtx for the computed value is returned. The value is never null. | |
495 | In the case of a void EXP, const0_rtx is returned. */ | |
711d877c KG |
496 | extern rtx expand_expr PARAMS ((tree, rtx, enum machine_mode, |
497 | enum expand_modifier)); | |
12e74c9e RK |
498 | |
499 | /* At the start of a function, record that we have no previously-pushed | |
500 | arguments waiting to be popped. */ | |
711d877c | 501 | extern void init_pending_stack_adjust PARAMS ((void)); |
12e74c9e RK |
502 | |
503 | /* When exiting from function, if safe, clear out any pending stack adjust | |
504 | so the adjustment won't get done. */ | |
711d877c | 505 | extern void clear_pending_stack_adjust PARAMS ((void)); |
12e74c9e RK |
506 | |
507 | /* Pop any previously-pushed arguments that have not been popped yet. */ | |
711d877c | 508 | extern void do_pending_stack_adjust PARAMS ((void)); |
12e74c9e RK |
509 | |
510 | #ifdef TREE_CODE | |
28f4ec01 BS |
511 | /* Return the tree node and offset if a given argument corresponds to |
512 | a string constant. */ | |
711d877c | 513 | extern tree string_constant PARAMS ((tree, tree *)); |
28f4ec01 | 514 | |
12e74c9e | 515 | /* Generate code to evaluate EXP and jump to LABEL if the value is zero. */ |
711d877c | 516 | extern void jumpifnot PARAMS ((tree, rtx)); |
12e74c9e RK |
517 | |
518 | /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */ | |
711d877c | 519 | extern void jumpif PARAMS ((tree, rtx)); |
12e74c9e RK |
520 | |
521 | /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if | |
522 | the result is zero, or IF_TRUE_LABEL if the result is one. */ | |
711d877c | 523 | extern void do_jump PARAMS ((tree, rtx, rtx)); |
12e74c9e RK |
524 | #endif |
525 | ||
526 | /* Generate rtl to compare two rtx's, will call emit_cmp_insn. */ | |
711d877c | 527 | extern rtx compare_from_rtx PARAMS ((rtx, rtx, enum rtx_code, int, |
a06ef755 | 528 | enum machine_mode, rtx)); |
711d877c | 529 | extern void do_compare_rtx_and_jump PARAMS ((rtx, rtx, enum rtx_code, int, |
729a2125 | 530 | enum machine_mode, rtx, |
a06ef755 | 531 | rtx, rtx)); |
12e74c9e | 532 | |
ad82abb8 ZW |
533 | /* Two different ways of generating switch statements. */ |
534 | extern int try_casesi PARAMS ((tree, tree, tree, tree, rtx, rtx)); | |
535 | extern int try_tablejump PARAMS ((tree, tree, tree, tree, rtx, rtx)); | |
536 | ||
537 | /* Smallest number of adjacent cases before we use a jump table. | |
538 | XXX Should be a target hook. */ | |
539 | extern unsigned int case_values_threshold PARAMS ((void)); | |
540 | ||
12e74c9e | 541 | \f |
cb411bd6 RS |
542 | #ifdef TREE_CODE |
543 | /* rtl.h and tree.h were included. */ | |
544 | /* Return an rtx for the size in bytes of the value of an expr. */ | |
711d877c | 545 | extern rtx expr_size PARAMS ((tree)); |
cb411bd6 | 546 | |
711d877c | 547 | extern rtx lookup_static_chain PARAMS ((tree)); |
cb411bd6 RS |
548 | |
549 | /* Convert a stack slot address ADDR valid in function FNDECL | |
550 | into an address valid in this function (using a static chain). */ | |
711d877c | 551 | extern rtx fix_lexical_addr PARAMS ((rtx, tree)); |
cb411bd6 RS |
552 | |
553 | /* Return the address of the trampoline for entering nested fn FUNCTION. */ | |
711d877c | 554 | extern rtx trampoline_address PARAMS ((tree)); |
cb411bd6 RS |
555 | |
556 | /* Return an rtx that refers to the value returned by a function | |
557 | in its original home. This becomes invalid if any more code is emitted. */ | |
711d877c | 558 | extern rtx hard_function_value PARAMS ((tree, tree, int)); |
cb411bd6 | 559 | |
3affaf29 | 560 | extern rtx prepare_call_address PARAMS ((rtx, tree, rtx *, int, int)); |
cb411bd6 | 561 | |
711d877c | 562 | extern rtx expand_call PARAMS ((tree, rtx, int)); |
cb411bd6 | 563 | |
3bdf5ad1 RK |
564 | extern rtx expand_shift PARAMS ((enum tree_code, enum machine_mode, rtx, tree, |
565 | rtx, int)); | |
566 | extern rtx expand_divmod PARAMS ((int, enum tree_code, enum machine_mode, rtx, | |
567 | rtx, rtx, int)); | |
568 | extern void locate_and_pad_parm PARAMS ((enum machine_mode, tree, int, tree, | |
569 | struct args_size *, | |
570 | struct args_size *, | |
571 | struct args_size *, | |
572 | struct args_size *)); | |
711d877c | 573 | extern rtx expand_inline_function PARAMS ((tree, tree, rtx, int, tree, rtx)); |
3bdf5ad1 | 574 | |
cb411bd6 | 575 | /* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */ |
711d877c | 576 | extern rtx label_rtx PARAMS ((tree)); |
cb411bd6 RS |
577 | #endif |
578 | ||
626043cf | 579 | /* Indicate how an input argument register was promoted. */ |
770ae6cc RK |
580 | extern rtx promoted_input_arg PARAMS ((unsigned int, enum machine_mode *, |
581 | int *)); | |
626043cf | 582 | |
e8bbfc4e RK |
583 | /* Return an rtx like arg but sans any constant terms. |
584 | Returns the original rtx if it has no constant terms. | |
585 | The constant terms are added and stored via a second arg. */ | |
711d877c | 586 | extern rtx eliminate_constant_term PARAMS ((rtx, rtx *)); |
e8bbfc4e RK |
587 | |
588 | /* Convert arg to a valid memory address for specified machine mode, | |
589 | by emitting insns to perform arithmetic if nec. */ | |
711d877c | 590 | extern rtx memory_address PARAMS ((enum machine_mode, rtx)); |
e8bbfc4e RK |
591 | |
592 | /* Like `memory_address' but pretent `flag_force_addr' is 0. */ | |
711d877c | 593 | extern rtx memory_address_noforce PARAMS ((enum machine_mode, rtx)); |
e8bbfc4e | 594 | |
173b24b9 RK |
595 | /* Set the alias set of MEM to SET. */ |
596 | extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT)); | |
597 | ||
d022d93e | 598 | /* Set the alignment of MEM to ALIGN bits. */ |
738cc472 RK |
599 | extern void set_mem_align PARAMS ((rtx, unsigned int)); |
600 | ||
998d7deb RH |
601 | /* Set the expr for MEM to EXPR. */ |
602 | extern void set_mem_expr PARAMS ((rtx, tree)); | |
603 | ||
604 | /* Set the offset for MEM to OFFSET. */ | |
605 | extern void set_mem_offset PARAMS ((rtx, rtx)); | |
1285011e | 606 | |
e8bbfc4e RK |
607 | /* Return a memory reference like MEMREF, but with its mode changed |
608 | to MODE and its address changed to ADDR. | |
609 | (VOIDmode means don't change the mode. | |
738cc472 RK |
610 | NULL for ADDR means don't change the address.) */ |
611 | extern rtx change_address PARAMS ((rtx, enum machine_mode, rtx)); | |
e8bbfc4e | 612 | |
f4ef873c RK |
613 | /* Return a memory reference like MEMREF, but with its mode changed |
614 | to MODE and its address offset by OFFSET bytes. */ | |
738cc472 | 615 | #define adjust_address(MEMREF, MODE, OFFSET) \ |
89fc10a5 | 616 | adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1) |
f4ef873c | 617 | |
f1ec5147 | 618 | /* Likewise, but the reference is not required to be valid. */ |
738cc472 | 619 | #define adjust_address_nv(MEMREF, MODE, OFFSET) \ |
89fc10a5 JJ |
620 | adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1) |
621 | ||
622 | /* Return a memory reference like MEMREF, but with its mode changed | |
623 | to MODE and its address changed to ADDR, which is assumed to be | |
624 | increased by OFFSET bytes from MEMREF. */ | |
625 | #define adjust_automodify_address(MEMREF, MODE, ADDR, OFFSET) \ | |
626 | adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 1) | |
627 | ||
628 | /* Likewise, but the reference is not required to be valid. */ | |
629 | #define adjust_automodify_address_nv(MEMREF, MODE, ADDR, OFFSET) \ | |
630 | adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 0) | |
738cc472 RK |
631 | |
632 | extern rtx adjust_address_1 PARAMS ((rtx, enum machine_mode, HOST_WIDE_INT, | |
89fc10a5 JJ |
633 | int, int)); |
634 | extern rtx adjust_automodify_address_1 PARAMS ((rtx, enum machine_mode, | |
635 | rtx, HOST_WIDE_INT, int)); | |
f1ec5147 | 636 | |
0d4903b8 RK |
637 | /* Return a memory reference like MEMREF, but whose address is changed by |
638 | adding OFFSET, an RTX, to it. POW2 is the highest power of two factor | |
639 | known to be in OFFSET (possibly 1). */ | |
640 | extern rtx offset_address PARAMS ((rtx, rtx, HOST_WIDE_INT)); | |
641 | ||
792760b9 RK |
642 | /* Return a memory reference like MEMREF, but with its address changed to |
643 | ADDR. The caller is asserting that the actual piece of memory pointed | |
644 | to is the same, just the form of the address is being changed, such as | |
645 | by putting something into a register. */ | |
646 | extern rtx replace_equiv_address PARAMS ((rtx, rtx)); | |
647 | ||
f1ec5147 RK |
648 | /* Likewise, but the reference is not required to be valid. */ |
649 | extern rtx replace_equiv_address_nv PARAMS ((rtx, rtx)); | |
650 | ||
e7dfe4bb RH |
651 | /* Return a memory reference like MEMREF, but with its mode widened to |
652 | MODE and adjusted by OFFSET. */ | |
653 | extern rtx widen_memory_access PARAMS ((rtx, enum machine_mode, HOST_WIDE_INT)); | |
654 | ||
e8bbfc4e RK |
655 | /* Return a memory reference like MEMREF, but which is known to have a |
656 | valid address. */ | |
711d877c | 657 | extern rtx validize_mem PARAMS ((rtx)); |
e8bbfc4e | 658 | |
3bdf5ad1 | 659 | #ifdef TREE_CODE |
258a120b JM |
660 | /* Given REF, either a MEM or a REG, and T, either the type of X or |
661 | the expression corresponding to REF, set RTX_UNCHANGING_P if | |
662 | appropriate. */ | |
663 | extern void maybe_set_unchanging PARAMS ((rtx, tree)); | |
664 | ||
3bdf5ad1 RK |
665 | /* Given REF, a MEM, and T, either the type of X or the expression |
666 | corresponding to REF, set the memory attributes. OBJECTP is nonzero | |
667 | if we are making a new object of this type. */ | |
668 | extern void set_mem_attributes PARAMS ((rtx, tree, int)); | |
669 | #endif | |
670 | ||
e8bbfc4e | 671 | /* Assemble the static constant template for function entry trampolines. */ |
711d877c | 672 | extern rtx assemble_trampoline_template PARAMS ((void)); |
e8bbfc4e | 673 | |
e8bbfc4e RK |
674 | /* Given rtx, return new rtx whose address won't be affected by |
675 | any side effects. It has been copied to a new temporary reg. */ | |
711d877c | 676 | extern rtx stabilize PARAMS ((rtx)); |
e8bbfc4e RK |
677 | |
678 | /* Given an rtx, copy all regs it refers to into new temps | |
679 | and return a modified copy that refers to the new temps. */ | |
711d877c | 680 | extern rtx copy_all_regs PARAMS ((rtx)); |
e8bbfc4e RK |
681 | |
682 | /* Copy given rtx to a new temp reg and return that. */ | |
711d877c | 683 | extern rtx copy_to_reg PARAMS ((rtx)); |
e8bbfc4e RK |
684 | |
685 | /* Like copy_to_reg but always make the reg Pmode. */ | |
711d877c | 686 | extern rtx copy_addr_to_reg PARAMS ((rtx)); |
e8bbfc4e RK |
687 | |
688 | /* Like copy_to_reg but always make the reg the specified mode MODE. */ | |
711d877c | 689 | extern rtx copy_to_mode_reg PARAMS ((enum machine_mode, rtx)); |
e8bbfc4e RK |
690 | |
691 | /* Copy given rtx to given temp reg and return that. */ | |
711d877c | 692 | extern rtx copy_to_suggested_reg PARAMS ((rtx, rtx, enum machine_mode)); |
e8bbfc4e RK |
693 | |
694 | /* Copy a value to a register if it isn't already a register. | |
695 | Args are mode (in case value is a constant) and the value. */ | |
711d877c | 696 | extern rtx force_reg PARAMS ((enum machine_mode, rtx)); |
e8bbfc4e RK |
697 | |
698 | /* Return given rtx, copied into a new temp reg if it was in memory. */ | |
711d877c | 699 | extern rtx force_not_mem PARAMS ((rtx)); |
e8bbfc4e | 700 | |
9d69b7c8 RK |
701 | #ifdef TREE_CODE |
702 | /* Return mode and signedness to use when object is promoted. */ | |
711d877c KG |
703 | extern enum machine_mode promote_mode PARAMS ((tree, enum machine_mode, |
704 | int *, int)); | |
9d69b7c8 RK |
705 | #endif |
706 | ||
e8bbfc4e | 707 | /* Remove some bytes from the stack. An rtx says how many. */ |
711d877c | 708 | extern void adjust_stack PARAMS ((rtx)); |
e8bbfc4e RK |
709 | |
710 | /* Add some bytes to the stack. An rtx says how many. */ | |
711d877c | 711 | extern void anti_adjust_stack PARAMS ((rtx)); |
e8bbfc4e | 712 | |
59257ff7 RK |
713 | /* This enum is used for the following two functions. */ |
714 | enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL}; | |
715 | ||
716 | /* Save the stack pointer at the specified level. */ | |
711d877c | 717 | extern void emit_stack_save PARAMS ((enum save_level, rtx *, rtx)); |
59257ff7 RK |
718 | |
719 | /* Restore the stack pointer from a save area of the specified level. */ | |
711d877c | 720 | extern void emit_stack_restore PARAMS ((enum save_level, rtx, rtx)); |
59257ff7 | 721 | |
e8bbfc4e RK |
722 | /* Allocate some space on the stack dynamically and return its address. An rtx |
723 | says how many bytes. */ | |
711d877c | 724 | extern rtx allocate_dynamic_stack_space PARAMS ((rtx, rtx, int)); |
e8bbfc4e | 725 | |
0fb7aeda | 726 | /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. |
f7761c9a RK |
727 | FIRST is a constant and size is a Pmode RTX. These are offsets from the |
728 | current stack pointer. STACK_GROWS_DOWNWARD says whether to add or | |
729 | subtract from the stack. If SIZE is constant, this is done | |
730 | with a fixed number of probes. Otherwise, we must make a loop. */ | |
711d877c | 731 | extern void probe_stack_range PARAMS ((HOST_WIDE_INT, rtx)); |
f7761c9a | 732 | |
e8bbfc4e RK |
733 | /* Return an rtx that refers to the value returned by a library call |
734 | in its original home. This becomes invalid if any more code is emitted. */ | |
711d877c | 735 | extern rtx hard_libcall_value PARAMS ((enum machine_mode)); |
e8bbfc4e | 736 | |
e8bbfc4e RK |
737 | /* Given an rtx, return an rtx for a value rounded up to a multiple |
738 | of STACK_BOUNDARY / BITS_PER_UNIT. */ | |
711d877c | 739 | extern rtx round_push PARAMS ((rtx)); |
e8bbfc4e | 740 | |
da920570 ZW |
741 | /* Return the mode desired by operand N of a particular bitfield |
742 | insert/extract insn, or MAX_MACHINE_MODE if no such insn is | |
743 | available. */ | |
744 | ||
745 | enum extraction_pattern { EP_insv, EP_extv, EP_extzv }; | |
746 | extern enum machine_mode | |
747 | mode_for_extraction PARAMS ((enum extraction_pattern, int)); | |
748 | ||
770ae6cc RK |
749 | extern rtx store_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT, |
750 | unsigned HOST_WIDE_INT, | |
04050c69 | 751 | enum machine_mode, rtx, HOST_WIDE_INT)); |
770ae6cc RK |
752 | extern rtx extract_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT, |
753 | unsigned HOST_WIDE_INT, int, rtx, | |
729a2125 | 754 | enum machine_mode, enum machine_mode, |
04050c69 | 755 | HOST_WIDE_INT)); |
711d877c | 756 | extern rtx expand_mult PARAMS ((enum machine_mode, rtx, rtx, rtx, int)); |
ce60bf25 | 757 | extern bool const_mult_add_overflow_p PARAMS ((rtx, rtx, rtx, enum machine_mode, int)); |
711d877c KG |
758 | extern rtx expand_mult_add PARAMS ((rtx, rtx, rtx, rtx,enum machine_mode, int)); |
759 | extern rtx expand_mult_highpart_adjust PARAMS ((enum machine_mode, rtx, rtx, rtx, rtx, int)); | |
e8bbfc4e | 760 | |
711d877c | 761 | extern rtx assemble_static_space PARAMS ((int)); |
e8bbfc4e RK |
762 | |
763 | /* Hook called by expand_expr for language-specific tree codes. | |
764 | It is up to the language front end to install a hook | |
765 | if it has any such codes that expand_expr needs to know about. */ | |
711d877c KG |
766 | extern rtx (*lang_expand_expr) PARAMS ((union tree_node *, rtx, |
767 | enum machine_mode, | |
768 | enum expand_modifier modifier)); | |
b0cb541b | 769 | |
8f17b5c5 MM |
770 | extern int safe_from_p PARAMS ((rtx, tree, int)); |
771 | ||
e78d8e51 ZW |
772 | /* Call this once to initialize the contents of the optabs |
773 | appropriately for the current target machine. */ | |
774 | extern void init_optabs PARAMS ((void)); | |
711d877c | 775 | extern void init_all_optabs PARAMS ((void)); |
e78d8e51 ZW |
776 | |
777 | /* Call this to initialize an optab function entry. */ | |
778 | extern rtx init_one_libfunc PARAMS ((const char *)); | |
779 | ||
711d877c KG |
780 | extern void do_jump_by_parts_equality_rtx PARAMS ((rtx, rtx, rtx)); |
781 | extern void do_jump_by_parts_greater_rtx PARAMS ((enum machine_mode, | |
782 | int, rtx, rtx, rtx, | |
783 | rtx)); | |
df03cab5 | 784 | |
0586a4ce | 785 | #ifdef TREE_CODE /* Don't lose if tree.h not included. */ |
711d877c | 786 | extern void mark_seen_cases PARAMS ((tree, unsigned char *, |
770ae6cc | 787 | HOST_WIDE_INT, int)); |
0586a4ce | 788 | #endif |