Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-ssa-address.c @ 127:4c56639505ff
fix function.c and add CbC-example Makefile
| author | mir3636 |
|---|---|
| date | Wed, 11 Apr 2018 18:46:58 +0900 |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 0 | 1 /* Memory address lowering and addressing mode selection. |
| 111 | 2 Copyright (C) 2004-2017 Free Software Foundation, Inc. |
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3 |
| 0 | 4 This file is part of GCC. |
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5 |
| 0 | 6 GCC is free software; you can redistribute it and/or modify it |
| 7 under the terms of the GNU General Public License as published by the | |
| 8 Free Software Foundation; either version 3, or (at your option) any | |
| 9 later version. | |
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10 |
| 0 | 11 GCC is distributed in the hope that it will be useful, but WITHOUT |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
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15 |
| 0 | 16 You should have received a copy of the GNU General Public License |
| 17 along with GCC; see the file COPYING3. If not see | |
| 18 <http://www.gnu.org/licenses/>. */ | |
| 19 | |
| 20 /* Utility functions for manipulation with TARGET_MEM_REFs -- tree expressions | |
| 21 that directly map to addressing modes of the target. */ | |
| 22 | |
| 23 #include "config.h" | |
| 24 #include "system.h" | |
| 25 #include "coretypes.h" | |
| 111 | 26 #include "backend.h" |
| 27 #include "target.h" | |
| 28 #include "rtl.h" | |
| 0 | 29 #include "tree.h" |
| 111 | 30 #include "gimple.h" |
| 31 #include "memmodel.h" | |
| 32 #include "stringpool.h" | |
| 33 #include "tree-vrp.h" | |
| 34 #include "tree-ssanames.h" | |
| 35 #include "expmed.h" | |
| 36 #include "insn-config.h" | |
| 37 #include "emit-rtl.h" | |
| 38 #include "recog.h" | |
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39 #include "tree-pretty-print.h" |
| 111 | 40 #include "fold-const.h" |
| 41 #include "stor-layout.h" | |
| 42 #include "gimple-iterator.h" | |
| 43 #include "gimplify-me.h" | |
| 44 #include "tree-ssa-loop-ivopts.h" | |
| 45 #include "expr.h" | |
| 46 #include "tree-dfa.h" | |
| 47 #include "dumpfile.h" | |
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48 #include "tree-affine.h" |
| 111 | 49 #include "gimplify.h" |
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50 |
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51 /* FIXME: We compute address costs using RTL. */ |
| 111 | 52 #include "tree-ssa-address.h" |
| 0 | 53 |
| 54 /* TODO -- handling of symbols (according to Richard Hendersons | |
| 55 comments, http://gcc.gnu.org/ml/gcc-patches/2005-04/msg00949.html): | |
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56 |
| 0 | 57 There are at least 5 different kinds of symbols that we can run up against: |
| 58 | |
| 59 (1) binds_local_p, small data area. | |
| 60 (2) binds_local_p, eg local statics | |
| 61 (3) !binds_local_p, eg global variables | |
| 62 (4) thread local, local_exec | |
| 63 (5) thread local, !local_exec | |
| 64 | |
| 65 Now, (1) won't appear often in an array context, but it certainly can. | |
| 66 All you have to do is set -GN high enough, or explicitly mark any | |
| 67 random object __attribute__((section (".sdata"))). | |
| 68 | |
| 69 All of these affect whether or not a symbol is in fact a valid address. | |
| 70 The only one tested here is (3). And that result may very well | |
| 71 be incorrect for (4) or (5). | |
| 72 | |
| 73 An incorrect result here does not cause incorrect results out the | |
| 74 back end, because the expander in expr.c validizes the address. However | |
| 75 it would be nice to improve the handling here in order to produce more | |
| 76 precise results. */ | |
| 77 | |
| 78 /* A "template" for memory address, used to determine whether the address is | |
| 79 valid for mode. */ | |
| 80 | |
| 111 | 81 struct GTY (()) mem_addr_template { |
| 0 | 82 rtx ref; /* The template. */ |
| 83 rtx * GTY ((skip)) step_p; /* The point in template where the step should be | |
| 84 filled in. */ | |
| 85 rtx * GTY ((skip)) off_p; /* The point in template where the offset should | |
| 86 be filled in. */ | |
| 111 | 87 }; |
| 0 | 88 |
| 89 | |
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90 /* The templates. Each of the low five bits of the index corresponds to one |
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91 component of TARGET_MEM_REF being present, while the high bits identify |
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92 the address space. See TEMPL_IDX. */ |
| 0 | 93 |
| 111 | 94 static GTY(()) vec<mem_addr_template, va_gc> *mem_addr_template_list; |
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95 |
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96 #define TEMPL_IDX(AS, SYMBOL, BASE, INDEX, STEP, OFFSET) \ |
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97 (((int) (AS) << 5) \ |
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98 | ((SYMBOL != 0) << 4) \ |
| 0 | 99 | ((BASE != 0) << 3) \ |
| 100 | ((INDEX != 0) << 2) \ | |
| 101 | ((STEP != 0) << 1) \ | |
| 102 | (OFFSET != 0)) | |
| 103 | |
| 104 /* Stores address for memory reference with parameters SYMBOL, BASE, INDEX, | |
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105 STEP and OFFSET to *ADDR using address mode ADDRESS_MODE. Stores pointers |
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106 to where step is placed to *STEP_P and offset to *OFFSET_P. */ |
| 0 | 107 |
| 108 static void | |
| 111 | 109 gen_addr_rtx (machine_mode address_mode, |
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110 rtx symbol, rtx base, rtx index, rtx step, rtx offset, |
| 0 | 111 rtx *addr, rtx **step_p, rtx **offset_p) |
| 112 { | |
| 113 rtx act_elem; | |
| 114 | |
| 115 *addr = NULL_RTX; | |
| 116 if (step_p) | |
| 117 *step_p = NULL; | |
| 118 if (offset_p) | |
| 119 *offset_p = NULL; | |
| 120 | |
| 111 | 121 if (index && index != const0_rtx) |
| 0 | 122 { |
| 123 act_elem = index; | |
| 124 if (step) | |
| 125 { | |
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126 act_elem = gen_rtx_MULT (address_mode, act_elem, step); |
| 0 | 127 |
| 128 if (step_p) | |
| 129 *step_p = &XEXP (act_elem, 1); | |
| 130 } | |
| 131 | |
| 132 *addr = act_elem; | |
| 133 } | |
| 134 | |
| 111 | 135 if (base && base != const0_rtx) |
| 0 | 136 { |
| 137 if (*addr) | |
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138 *addr = simplify_gen_binary (PLUS, address_mode, base, *addr); |
| 0 | 139 else |
| 140 *addr = base; | |
| 141 } | |
| 142 | |
| 143 if (symbol) | |
| 144 { | |
| 145 act_elem = symbol; | |
| 146 if (offset) | |
| 147 { | |
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148 act_elem = gen_rtx_PLUS (address_mode, act_elem, offset); |
| 0 | 149 |
| 150 if (offset_p) | |
| 151 *offset_p = &XEXP (act_elem, 1); | |
| 152 | |
| 153 if (GET_CODE (symbol) == SYMBOL_REF | |
| 154 || GET_CODE (symbol) == LABEL_REF | |
| 155 || GET_CODE (symbol) == CONST) | |
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156 act_elem = gen_rtx_CONST (address_mode, act_elem); |
| 0 | 157 } |
| 158 | |
| 159 if (*addr) | |
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160 *addr = gen_rtx_PLUS (address_mode, *addr, act_elem); |
| 0 | 161 else |
| 162 *addr = act_elem; | |
| 163 } | |
| 164 else if (offset) | |
| 165 { | |
| 166 if (*addr) | |
| 167 { | |
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168 *addr = gen_rtx_PLUS (address_mode, *addr, offset); |
| 0 | 169 if (offset_p) |
| 170 *offset_p = &XEXP (*addr, 1); | |
| 171 } | |
| 172 else | |
| 173 { | |
| 174 *addr = offset; | |
| 175 if (offset_p) | |
| 176 *offset_p = addr; | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 if (!*addr) | |
| 181 *addr = const0_rtx; | |
| 182 } | |
| 183 | |
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184 /* Returns address for TARGET_MEM_REF with parameters given by ADDR |
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185 in address space AS. |
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186 If REALLY_EXPAND is false, just make fake registers instead |
| 0 | 187 of really expanding the operands, and perform the expansion in-place |
| 188 by using one of the "templates". */ | |
| 189 | |
| 190 rtx | |
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191 addr_for_mem_ref (struct mem_address *addr, addr_space_t as, |
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192 bool really_expand) |
| 0 | 193 { |
| 111 | 194 scalar_int_mode address_mode = targetm.addr_space.address_mode (as); |
| 195 scalar_int_mode pointer_mode = targetm.addr_space.pointer_mode (as); | |
| 0 | 196 rtx address, sym, bse, idx, st, off; |
| 197 struct mem_addr_template *templ; | |
| 198 | |
| 199 if (addr->step && !integer_onep (addr->step)) | |
| 111 | 200 st = immed_wide_int_const (wi::to_wide (addr->step), pointer_mode); |
| 0 | 201 else |
| 202 st = NULL_RTX; | |
| 203 | |
| 204 if (addr->offset && !integer_zerop (addr->offset)) | |
| 111 | 205 { |
| 206 offset_int dc = offset_int::from (wi::to_wide (addr->offset), SIGNED); | |
| 207 off = immed_wide_int_const (dc, pointer_mode); | |
| 208 } | |
| 0 | 209 else |
| 210 off = NULL_RTX; | |
| 211 | |
| 212 if (!really_expand) | |
| 213 { | |
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214 unsigned int templ_index |
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215 = TEMPL_IDX (as, addr->symbol, addr->base, addr->index, st, off); |
| 0 | 216 |
| 111 | 217 if (templ_index >= vec_safe_length (mem_addr_template_list)) |
| 218 vec_safe_grow_cleared (mem_addr_template_list, templ_index + 1); | |
| 0 | 219 |
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220 /* Reuse the templates for addresses, so that we do not waste memory. */ |
| 111 | 221 templ = &(*mem_addr_template_list)[templ_index]; |
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222 if (!templ->ref) |
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223 { |
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224 sym = (addr->symbol ? |
| 111 | 225 gen_rtx_SYMBOL_REF (pointer_mode, ggc_strdup ("test_symbol")) |
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226 : NULL_RTX); |
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227 bse = (addr->base ? |
| 111 | 228 gen_raw_REG (pointer_mode, LAST_VIRTUAL_REGISTER + 1) |
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229 : NULL_RTX); |
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230 idx = (addr->index ? |
| 111 | 231 gen_raw_REG (pointer_mode, LAST_VIRTUAL_REGISTER + 2) |
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232 : NULL_RTX); |
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233 |
| 111 | 234 gen_addr_rtx (pointer_mode, sym, bse, idx, |
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235 st? const0_rtx : NULL_RTX, |
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236 off? const0_rtx : NULL_RTX, |
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237 &templ->ref, |
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238 &templ->step_p, |
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239 &templ->off_p); |
| 0 | 240 } |
| 241 | |
| 242 if (st) | |
| 243 *templ->step_p = st; | |
| 244 if (off) | |
| 245 *templ->off_p = off; | |
| 246 | |
| 247 return templ->ref; | |
| 248 } | |
| 249 | |
| 250 /* Otherwise really expand the expressions. */ | |
| 251 sym = (addr->symbol | |
| 111 | 252 ? expand_expr (addr->symbol, NULL_RTX, pointer_mode, EXPAND_NORMAL) |
| 0 | 253 : NULL_RTX); |
| 254 bse = (addr->base | |
| 111 | 255 ? expand_expr (addr->base, NULL_RTX, pointer_mode, EXPAND_NORMAL) |
| 0 | 256 : NULL_RTX); |
| 257 idx = (addr->index | |
| 111 | 258 ? expand_expr (addr->index, NULL_RTX, pointer_mode, EXPAND_NORMAL) |
| 0 | 259 : NULL_RTX); |
| 260 | |
| 111 | 261 gen_addr_rtx (pointer_mode, sym, bse, idx, st, off, &address, NULL, NULL); |
| 262 if (pointer_mode != address_mode) | |
| 263 address = convert_memory_address (address_mode, address); | |
| 0 | 264 return address; |
| 265 } | |
| 266 | |
| 111 | 267 /* implement addr_for_mem_ref() directly from a tree, which avoids exporting |
| 268 the mem_address structure. */ | |
| 269 | |
| 270 rtx | |
| 271 addr_for_mem_ref (tree exp, addr_space_t as, bool really_expand) | |
| 272 { | |
| 273 struct mem_address addr; | |
| 274 get_address_description (exp, &addr); | |
| 275 return addr_for_mem_ref (&addr, as, really_expand); | |
| 276 } | |
| 277 | |
| 0 | 278 /* Returns address of MEM_REF in TYPE. */ |
| 279 | |
| 280 tree | |
| 281 tree_mem_ref_addr (tree type, tree mem_ref) | |
| 282 { | |
| 283 tree addr; | |
| 284 tree act_elem; | |
| 285 tree step = TMR_STEP (mem_ref), offset = TMR_OFFSET (mem_ref); | |
| 286 tree addr_base = NULL_TREE, addr_off = NULL_TREE; | |
| 287 | |
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288 addr_base = fold_convert (type, TMR_BASE (mem_ref)); |
| 0 | 289 |
| 290 act_elem = TMR_INDEX (mem_ref); | |
| 291 if (act_elem) | |
| 292 { | |
| 293 if (step) | |
| 111 | 294 act_elem = fold_build2 (MULT_EXPR, TREE_TYPE (act_elem), |
| 295 act_elem, step); | |
| 0 | 296 addr_off = act_elem; |
| 297 } | |
| 298 | |
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299 act_elem = TMR_INDEX2 (mem_ref); |
| 0 | 300 if (act_elem) |
| 301 { | |
| 302 if (addr_off) | |
| 111 | 303 addr_off = fold_build2 (PLUS_EXPR, TREE_TYPE (addr_off), |
| 304 addr_off, act_elem); | |
| 0 | 305 else |
| 306 addr_off = act_elem; | |
| 307 } | |
| 308 | |
| 309 if (offset && !integer_zerop (offset)) | |
| 310 { | |
| 311 if (addr_off) | |
| 111 | 312 addr_off = fold_build2 (PLUS_EXPR, TREE_TYPE (addr_off), addr_off, |
| 313 fold_convert (TREE_TYPE (addr_off), offset)); | |
| 0 | 314 else |
| 315 addr_off = offset; | |
| 316 } | |
| 317 | |
| 318 if (addr_off) | |
| 111 | 319 addr = fold_build_pointer_plus (addr_base, addr_off); |
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320 else |
| 0 | 321 addr = addr_base; |
| 322 | |
| 323 return addr; | |
| 324 } | |
| 325 | |
| 326 /* Returns true if a memory reference in MODE and with parameters given by | |
| 327 ADDR is valid on the current target. */ | |
| 328 | |
| 111 | 329 bool |
| 330 valid_mem_ref_p (machine_mode mode, addr_space_t as, | |
|
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331 struct mem_address *addr) |
| 0 | 332 { |
| 333 rtx address; | |
| 334 | |
|
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335 address = addr_for_mem_ref (addr, as, false); |
| 0 | 336 if (!address) |
| 337 return false; | |
| 338 | |
|
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339 return memory_address_addr_space_p (mode, address, as); |
| 0 | 340 } |
| 341 | |
| 342 /* Checks whether a TARGET_MEM_REF with type TYPE and parameters given by ADDR | |
| 343 is valid on the current target and if so, creates and returns the | |
|
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344 TARGET_MEM_REF. If VERIFY is false omit the verification step. */ |
| 0 | 345 |
| 346 static tree | |
|
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347 create_mem_ref_raw (tree type, tree alias_ptr_type, struct mem_address *addr, |
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348 bool verify) |
| 0 | 349 { |
|
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350 tree base, index2; |
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351 |
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352 if (verify |
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353 && !valid_mem_ref_p (TYPE_MODE (type), TYPE_ADDR_SPACE (type), addr)) |
| 0 | 354 return NULL_TREE; |
| 355 | |
| 356 if (addr->step && integer_onep (addr->step)) | |
| 357 addr->step = NULL_TREE; | |
| 358 | |
|
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359 if (addr->offset) |
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360 addr->offset = fold_convert (alias_ptr_type, addr->offset); |
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361 else |
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362 addr->offset = build_int_cst (alias_ptr_type, 0); |
| 0 | 363 |
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364 if (addr->symbol) |
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365 { |
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366 base = addr->symbol; |
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367 index2 = addr->base; |
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368 } |
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369 else if (addr->base |
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370 && POINTER_TYPE_P (TREE_TYPE (addr->base))) |
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371 { |
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372 base = addr->base; |
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373 index2 = NULL_TREE; |
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374 } |
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375 else |
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376 { |
| 111 | 377 base = build_int_cst (build_pointer_type (type), 0); |
|
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378 index2 = addr->base; |
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379 } |
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380 |
| 111 | 381 /* If possible use a plain MEM_REF instead of a TARGET_MEM_REF. |
| 382 ??? As IVOPTs does not follow restrictions to where the base | |
| 383 pointer may point to create a MEM_REF only if we know that | |
| 384 base is valid. */ | |
| 385 if ((TREE_CODE (base) == ADDR_EXPR || TREE_CODE (base) == INTEGER_CST) | |
|
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386 && (!index2 || integer_zerop (index2)) |
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387 && (!addr->index || integer_zerop (addr->index))) |
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388 return fold_build2 (MEM_REF, type, base, addr->offset); |
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389 |
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390 return build5 (TARGET_MEM_REF, type, |
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391 base, addr->offset, addr->index, addr->step, index2); |
| 0 | 392 } |
| 393 | |
| 394 /* Returns true if OBJ is an object whose address is a link time constant. */ | |
| 395 | |
| 396 static bool | |
| 397 fixed_address_object_p (tree obj) | |
| 398 { | |
| 111 | 399 return (VAR_P (obj) |
| 400 && (TREE_STATIC (obj) || DECL_EXTERNAL (obj)) | |
| 0 | 401 && ! DECL_DLLIMPORT_P (obj)); |
| 402 } | |
| 403 | |
| 404 /* If ADDR contains an address of object that is a link time constant, | |
| 405 move it to PARTS->symbol. */ | |
| 406 | |
| 111 | 407 void |
| 0 | 408 move_fixed_address_to_symbol (struct mem_address *parts, aff_tree *addr) |
| 409 { | |
| 410 unsigned i; | |
| 411 tree val = NULL_TREE; | |
| 412 | |
| 413 for (i = 0; i < addr->n; i++) | |
| 414 { | |
| 111 | 415 if (addr->elts[i].coef != 1) |
| 0 | 416 continue; |
| 417 | |
| 418 val = addr->elts[i].val; | |
| 419 if (TREE_CODE (val) == ADDR_EXPR | |
| 420 && fixed_address_object_p (TREE_OPERAND (val, 0))) | |
| 421 break; | |
| 422 } | |
| 423 | |
| 424 if (i == addr->n) | |
| 425 return; | |
| 426 | |
|
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427 parts->symbol = val; |
| 0 | 428 aff_combination_remove_elt (addr, i); |
| 429 } | |
| 430 | |
| 111 | 431 /* Return true if ADDR contains an instance of BASE_HINT and it's moved to |
| 432 PARTS->base. */ | |
|
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433 |
| 111 | 434 static bool |
|
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435 move_hint_to_base (tree type, struct mem_address *parts, tree base_hint, |
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436 aff_tree *addr) |
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437 { |
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438 unsigned i; |
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439 tree val = NULL_TREE; |
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440 int qual; |
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441 |
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442 for (i = 0; i < addr->n; i++) |
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443 { |
| 111 | 444 if (addr->elts[i].coef != 1) |
|
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445 continue; |
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446 |
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447 val = addr->elts[i].val; |
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448 if (operand_equal_p (val, base_hint, 0)) |
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449 break; |
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450 } |
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451 |
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452 if (i == addr->n) |
| 111 | 453 return false; |
|
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454 |
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455 /* Cast value to appropriate pointer type. We cannot use a pointer |
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456 to TYPE directly, as the back-end will assume registers of pointer |
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457 type are aligned, and just the base itself may not actually be. |
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458 We use void pointer to the type's address space instead. */ |
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459 qual = ENCODE_QUAL_ADDR_SPACE (TYPE_ADDR_SPACE (type)); |
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460 type = build_qualified_type (void_type_node, qual); |
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461 parts->base = fold_convert (build_pointer_type (type), val); |
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462 aff_combination_remove_elt (addr, i); |
| 111 | 463 return true; |
|
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464 } |
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465 |
| 0 | 466 /* If ADDR contains an address of a dereferenced pointer, move it to |
| 467 PARTS->base. */ | |
| 468 | |
| 469 static void | |
| 470 move_pointer_to_base (struct mem_address *parts, aff_tree *addr) | |
| 471 { | |
| 472 unsigned i; | |
| 473 tree val = NULL_TREE; | |
| 474 | |
| 475 for (i = 0; i < addr->n; i++) | |
| 476 { | |
| 111 | 477 if (addr->elts[i].coef != 1) |
| 0 | 478 continue; |
| 479 | |
| 480 val = addr->elts[i].val; | |
| 481 if (POINTER_TYPE_P (TREE_TYPE (val))) | |
| 482 break; | |
| 483 } | |
| 484 | |
| 485 if (i == addr->n) | |
| 486 return; | |
| 487 | |
| 488 parts->base = val; | |
| 489 aff_combination_remove_elt (addr, i); | |
| 490 } | |
| 491 | |
|
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492 /* Moves the loop variant part V in linear address ADDR to be the index |
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493 of PARTS. */ |
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494 |
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495 static void |
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496 move_variant_to_index (struct mem_address *parts, aff_tree *addr, tree v) |
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497 { |
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498 unsigned i; |
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499 tree val = NULL_TREE; |
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500 |
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501 gcc_assert (!parts->index); |
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502 for (i = 0; i < addr->n; i++) |
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503 { |
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504 val = addr->elts[i].val; |
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505 if (operand_equal_p (val, v, 0)) |
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506 break; |
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507 } |
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508 |
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509 if (i == addr->n) |
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510 return; |
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511 |
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512 parts->index = fold_convert (sizetype, val); |
| 111 | 513 parts->step = wide_int_to_tree (sizetype, addr->elts[i].coef); |
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514 aff_combination_remove_elt (addr, i); |
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515 } |
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516 |
| 0 | 517 /* Adds ELT to PARTS. */ |
| 518 | |
| 519 static void | |
| 520 add_to_parts (struct mem_address *parts, tree elt) | |
| 521 { | |
| 522 tree type; | |
| 523 | |
| 524 if (!parts->index) | |
| 525 { | |
| 526 parts->index = fold_convert (sizetype, elt); | |
| 527 return; | |
| 528 } | |
| 529 | |
| 530 if (!parts->base) | |
| 531 { | |
| 532 parts->base = elt; | |
| 533 return; | |
| 534 } | |
| 535 | |
| 536 /* Add ELT to base. */ | |
| 537 type = TREE_TYPE (parts->base); | |
| 538 if (POINTER_TYPE_P (type)) | |
| 111 | 539 parts->base = fold_build_pointer_plus (parts->base, elt); |
| 0 | 540 else |
| 111 | 541 parts->base = fold_build2 (PLUS_EXPR, type, parts->base, elt); |
| 542 } | |
| 543 | |
| 544 /* Returns true if multiplying by RATIO is allowed in an address. Test the | |
| 545 validity for a memory reference accessing memory of mode MODE in address | |
| 546 space AS. */ | |
| 547 | |
| 548 static bool | |
| 549 multiplier_allowed_in_address_p (HOST_WIDE_INT ratio, machine_mode mode, | |
| 550 addr_space_t as) | |
| 551 { | |
| 552 #define MAX_RATIO 128 | |
| 553 unsigned int data_index = (int) as * MAX_MACHINE_MODE + (int) mode; | |
| 554 static vec<sbitmap> valid_mult_list; | |
| 555 sbitmap valid_mult; | |
| 556 | |
| 557 if (data_index >= valid_mult_list.length ()) | |
| 558 valid_mult_list.safe_grow_cleared (data_index + 1); | |
| 559 | |
| 560 valid_mult = valid_mult_list[data_index]; | |
| 561 if (!valid_mult) | |
| 562 { | |
| 563 machine_mode address_mode = targetm.addr_space.address_mode (as); | |
| 564 rtx reg1 = gen_raw_REG (address_mode, LAST_VIRTUAL_REGISTER + 1); | |
| 565 rtx reg2 = gen_raw_REG (address_mode, LAST_VIRTUAL_REGISTER + 2); | |
| 566 rtx addr, scaled; | |
| 567 HOST_WIDE_INT i; | |
| 568 | |
| 569 valid_mult = sbitmap_alloc (2 * MAX_RATIO + 1); | |
| 570 bitmap_clear (valid_mult); | |
| 571 scaled = gen_rtx_fmt_ee (MULT, address_mode, reg1, NULL_RTX); | |
| 572 addr = gen_rtx_fmt_ee (PLUS, address_mode, scaled, reg2); | |
| 573 for (i = -MAX_RATIO; i <= MAX_RATIO; i++) | |
| 574 { | |
| 575 XEXP (scaled, 1) = gen_int_mode (i, address_mode); | |
| 576 if (memory_address_addr_space_p (mode, addr, as) | |
| 577 || memory_address_addr_space_p (mode, scaled, as)) | |
| 578 bitmap_set_bit (valid_mult, i + MAX_RATIO); | |
| 579 } | |
| 580 | |
| 581 if (dump_file && (dump_flags & TDF_DETAILS)) | |
| 582 { | |
| 583 fprintf (dump_file, " allowed multipliers:"); | |
| 584 for (i = -MAX_RATIO; i <= MAX_RATIO; i++) | |
| 585 if (bitmap_bit_p (valid_mult, i + MAX_RATIO)) | |
| 586 fprintf (dump_file, " %d", (int) i); | |
| 587 fprintf (dump_file, "\n"); | |
| 588 fprintf (dump_file, "\n"); | |
| 589 } | |
| 590 | |
| 591 valid_mult_list[data_index] = valid_mult; | |
| 592 } | |
| 593 | |
| 594 if (ratio > MAX_RATIO || ratio < -MAX_RATIO) | |
| 595 return false; | |
| 596 | |
| 597 return bitmap_bit_p (valid_mult, ratio + MAX_RATIO); | |
| 0 | 598 } |
| 599 | |
| 600 /* Finds the most expensive multiplication in ADDR that can be | |
| 601 expressed in an addressing mode and move the corresponding | |
| 602 element(s) to PARTS. */ | |
| 603 | |
| 604 static void | |
|
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605 most_expensive_mult_to_index (tree type, struct mem_address *parts, |
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606 aff_tree *addr, bool speed) |
| 0 | 607 { |
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608 addr_space_t as = TYPE_ADDR_SPACE (type); |
| 111 | 609 machine_mode address_mode = targetm.addr_space.address_mode (as); |
| 0 | 610 HOST_WIDE_INT coef; |
| 611 unsigned best_mult_cost = 0, acost; | |
| 612 tree mult_elt = NULL_TREE, elt; | |
| 613 unsigned i, j; | |
| 614 enum tree_code op_code; | |
| 615 | |
| 111 | 616 offset_int best_mult = 0; |
| 0 | 617 for (i = 0; i < addr->n; i++) |
| 618 { | |
| 111 | 619 if (!wi::fits_shwi_p (addr->elts[i].coef)) |
| 0 | 620 continue; |
| 621 | |
| 111 | 622 coef = addr->elts[i].coef.to_shwi (); |
| 0 | 623 if (coef == 1 |
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624 || !multiplier_allowed_in_address_p (coef, TYPE_MODE (type), as)) |
| 0 | 625 continue; |
| 626 | |
| 111 | 627 acost = mult_by_coeff_cost (coef, address_mode, speed); |
| 0 | 628 |
| 629 if (acost > best_mult_cost) | |
| 630 { | |
| 631 best_mult_cost = acost; | |
| 111 | 632 best_mult = offset_int::from (addr->elts[i].coef, SIGNED); |
| 0 | 633 } |
| 634 } | |
| 635 | |
| 636 if (!best_mult_cost) | |
| 637 return; | |
| 638 | |
| 639 /* Collect elements multiplied by best_mult. */ | |
| 640 for (i = j = 0; i < addr->n; i++) | |
| 641 { | |
| 111 | 642 offset_int amult = offset_int::from (addr->elts[i].coef, SIGNED); |
| 643 offset_int amult_neg = -wi::sext (amult, TYPE_PRECISION (addr->type)); | |
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644 |
| 111 | 645 if (amult == best_mult) |
| 0 | 646 op_code = PLUS_EXPR; |
| 111 | 647 else if (amult_neg == best_mult) |
| 0 | 648 op_code = MINUS_EXPR; |
| 649 else | |
| 650 { | |
| 651 addr->elts[j] = addr->elts[i]; | |
| 652 j++; | |
| 653 continue; | |
| 654 } | |
| 655 | |
| 656 elt = fold_convert (sizetype, addr->elts[i].val); | |
| 657 if (mult_elt) | |
| 658 mult_elt = fold_build2 (op_code, sizetype, mult_elt, elt); | |
| 659 else if (op_code == PLUS_EXPR) | |
| 660 mult_elt = elt; | |
| 661 else | |
| 662 mult_elt = fold_build1 (NEGATE_EXPR, sizetype, elt); | |
| 663 } | |
| 664 addr->n = j; | |
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665 |
| 0 | 666 parts->index = mult_elt; |
| 111 | 667 parts->step = wide_int_to_tree (sizetype, best_mult); |
| 0 | 668 } |
| 669 | |
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670 /* Splits address ADDR for a memory access of type TYPE into PARTS. |
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671 If BASE_HINT is non-NULL, it specifies an SSA name to be used |
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672 preferentially as base of the reference, and IV_CAND is the selected |
| 111 | 673 iv candidate used in ADDR. Store true to VAR_IN_BASE if variant |
| 674 part of address is split to PARTS.base. | |
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675 |
| 0 | 676 TODO -- be more clever about the distribution of the elements of ADDR |
| 677 to PARTS. Some architectures do not support anything but single | |
| 678 register in address, possibly with a small integer offset; while | |
| 679 create_mem_ref will simplify the address to an acceptable shape | |
| 680 later, it would be more efficient to know that asking for complicated | |
| 681 addressing modes is useless. */ | |
| 682 | |
| 683 static void | |
| 111 | 684 addr_to_parts (tree type, aff_tree *addr, tree iv_cand, tree base_hint, |
| 685 struct mem_address *parts, bool *var_in_base, bool speed) | |
| 0 | 686 { |
| 687 tree part; | |
| 688 unsigned i; | |
| 689 | |
| 690 parts->symbol = NULL_TREE; | |
| 691 parts->base = NULL_TREE; | |
| 692 parts->index = NULL_TREE; | |
| 693 parts->step = NULL_TREE; | |
| 694 | |
| 111 | 695 if (addr->offset != 0) |
| 696 parts->offset = wide_int_to_tree (sizetype, addr->offset); | |
| 0 | 697 else |
| 698 parts->offset = NULL_TREE; | |
| 699 | |
| 700 /* Try to find a symbol. */ | |
| 701 move_fixed_address_to_symbol (parts, addr); | |
| 702 | |
| 111 | 703 /* Since at the moment there is no reliable way to know how to |
| 704 distinguish between pointer and its offset, we decide if var | |
| 705 part is the pointer based on guess. */ | |
| 706 *var_in_base = (base_hint != NULL && parts->symbol == NULL); | |
| 707 if (*var_in_base) | |
| 708 *var_in_base = move_hint_to_base (type, parts, base_hint, addr); | |
| 709 else | |
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710 move_variant_to_index (parts, addr, iv_cand); |
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711 |
| 111 | 712 /* First move the most expensive feasible multiplication to index. */ |
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713 if (!parts->index) |
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714 most_expensive_mult_to_index (type, parts, addr, speed); |
| 0 | 715 |
| 111 | 716 /* Move pointer into base. */ |
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717 if (!parts->symbol && !parts->base) |
| 0 | 718 move_pointer_to_base (parts, addr); |
| 719 | |
| 720 /* Then try to process the remaining elements. */ | |
| 721 for (i = 0; i < addr->n; i++) | |
| 722 { | |
| 723 part = fold_convert (sizetype, addr->elts[i].val); | |
| 111 | 724 if (addr->elts[i].coef != 1) |
| 0 | 725 part = fold_build2 (MULT_EXPR, sizetype, part, |
| 111 | 726 wide_int_to_tree (sizetype, addr->elts[i].coef)); |
| 0 | 727 add_to_parts (parts, part); |
| 728 } | |
| 729 if (addr->rest) | |
| 730 add_to_parts (parts, fold_convert (sizetype, addr->rest)); | |
| 731 } | |
| 732 | |
| 733 /* Force the PARTS to register. */ | |
| 734 | |
| 735 static void | |
| 736 gimplify_mem_ref_parts (gimple_stmt_iterator *gsi, struct mem_address *parts) | |
| 737 { | |
| 738 if (parts->base) | |
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739 parts->base = force_gimple_operand_gsi_1 (gsi, parts->base, |
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740 is_gimple_mem_ref_addr, NULL_TREE, |
| 0 | 741 true, GSI_SAME_STMT); |
| 742 if (parts->index) | |
| 743 parts->index = force_gimple_operand_gsi (gsi, parts->index, | |
| 744 true, NULL_TREE, | |
| 745 true, GSI_SAME_STMT); | |
| 746 } | |
| 747 | |
| 748 /* Creates and returns a TARGET_MEM_REF for address ADDR. If necessary | |
| 749 computations are emitted in front of GSI. TYPE is the mode | |
|
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750 of created memory reference. IV_CAND is the selected iv candidate in ADDR, |
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751 and BASE_HINT is non NULL if IV_CAND comes from a base address |
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752 object. */ |
| 0 | 753 |
| 754 tree | |
| 755 create_mem_ref (gimple_stmt_iterator *gsi, tree type, aff_tree *addr, | |
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756 tree alias_ptr_type, tree iv_cand, tree base_hint, bool speed) |
| 0 | 757 { |
| 111 | 758 bool var_in_base; |
| 0 | 759 tree mem_ref, tmp; |
| 760 struct mem_address parts; | |
| 761 | |
| 111 | 762 addr_to_parts (type, addr, iv_cand, base_hint, &parts, &var_in_base, speed); |
| 0 | 763 gimplify_mem_ref_parts (gsi, &parts); |
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764 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); |
| 0 | 765 if (mem_ref) |
| 766 return mem_ref; | |
| 767 | |
| 768 /* The expression is too complicated. Try making it simpler. */ | |
| 769 | |
| 111 | 770 /* Merge symbol into other parts. */ |
| 771 if (parts.symbol) | |
| 772 { | |
| 773 tmp = parts.symbol; | |
| 774 parts.symbol = NULL_TREE; | |
| 775 gcc_assert (is_gimple_val (tmp)); | |
| 776 | |
| 777 if (parts.base) | |
| 778 { | |
| 779 gcc_assert (useless_type_conversion_p (sizetype, | |
| 780 TREE_TYPE (parts.base))); | |
| 781 | |
| 782 if (parts.index) | |
| 783 { | |
| 784 /* Add the symbol to base, eventually forcing it to register. */ | |
| 785 tmp = fold_build_pointer_plus (tmp, parts.base); | |
| 786 tmp = force_gimple_operand_gsi_1 (gsi, tmp, | |
| 787 is_gimple_mem_ref_addr, | |
| 788 NULL_TREE, true, | |
| 789 GSI_SAME_STMT); | |
| 790 } | |
| 791 else | |
| 792 { | |
| 793 /* Move base to index, then move the symbol to base. */ | |
| 794 parts.index = parts.base; | |
| 795 } | |
| 796 parts.base = tmp; | |
| 797 } | |
| 798 else | |
| 799 parts.base = tmp; | |
| 800 | |
| 801 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); | |
| 802 if (mem_ref) | |
| 803 return mem_ref; | |
| 804 } | |
| 805 | |
| 806 /* Move multiplication to index by transforming address expression: | |
| 807 [... + index << step + ...] | |
| 808 into: | |
| 809 index' = index << step; | |
| 810 [... + index' + ,,,]. */ | |
| 0 | 811 if (parts.step && !integer_onep (parts.step)) |
| 812 { | |
| 813 gcc_assert (parts.index); | |
| 814 parts.index = force_gimple_operand_gsi (gsi, | |
| 815 fold_build2 (MULT_EXPR, sizetype, | |
| 816 parts.index, parts.step), | |
| 817 true, NULL_TREE, true, GSI_SAME_STMT); | |
| 818 parts.step = NULL_TREE; | |
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819 |
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820 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); |
| 0 | 821 if (mem_ref) |
| 822 return mem_ref; | |
| 823 } | |
| 824 | |
| 111 | 825 /* Add offset to invariant part by transforming address expression: |
| 826 [base + index + offset] | |
| 827 into: | |
| 828 base' = base + offset; | |
| 829 [base' + index] | |
| 830 or: | |
| 831 index' = index + offset; | |
| 832 [base + index'] | |
| 833 depending on which one is invariant. */ | |
| 834 if (parts.offset && !integer_zerop (parts.offset)) | |
| 0 | 835 { |
| 111 | 836 tree old_base = unshare_expr (parts.base); |
| 837 tree old_index = unshare_expr (parts.index); | |
| 838 tree old_offset = unshare_expr (parts.offset); | |
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839 |
| 111 | 840 tmp = parts.offset; |
| 841 parts.offset = NULL_TREE; | |
| 842 /* Add offset to invariant part. */ | |
| 843 if (!var_in_base) | |
| 0 | 844 { |
| 111 | 845 if (parts.base) |
| 846 { | |
| 847 tmp = fold_build_pointer_plus (parts.base, tmp); | |
| 848 tmp = force_gimple_operand_gsi_1 (gsi, tmp, | |
| 849 is_gimple_mem_ref_addr, | |
| 850 NULL_TREE, true, | |
| 851 GSI_SAME_STMT); | |
| 852 } | |
| 853 parts.base = tmp; | |
| 854 } | |
| 855 else | |
| 856 { | |
| 0 | 857 if (parts.index) |
| 858 { | |
| 111 | 859 tmp = fold_build_pointer_plus (parts.index, tmp); |
| 860 tmp = force_gimple_operand_gsi_1 (gsi, tmp, | |
| 861 is_gimple_mem_ref_addr, | |
| 862 NULL_TREE, true, | |
| 863 GSI_SAME_STMT); | |
| 0 | 864 } |
| 111 | 865 parts.index = tmp; |
| 0 | 866 } |
| 111 | 867 |
| 868 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); | |
| 869 if (mem_ref) | |
| 870 return mem_ref; | |
| 871 | |
| 872 /* Restore parts.base, index and offset so that we can check if | |
| 873 [base + offset] addressing mode is supported in next step. | |
| 874 This is necessary for targets only support [base + offset], | |
| 875 but not [base + index] addressing mode. */ | |
| 876 parts.base = old_base; | |
| 877 parts.index = old_index; | |
| 878 parts.offset = old_offset; | |
| 879 } | |
| 880 | |
| 881 /* Transform [base + index + ...] into: | |
| 882 base' = base + index; | |
| 883 [base' + ...]. */ | |
| 884 if (parts.index) | |
| 885 { | |
| 886 tmp = parts.index; | |
| 887 parts.index = NULL_TREE; | |
| 888 /* Add index to base. */ | |
| 889 if (parts.base) | |
| 890 { | |
| 891 tmp = fold_build_pointer_plus (parts.base, tmp); | |
| 892 tmp = force_gimple_operand_gsi_1 (gsi, tmp, | |
| 893 is_gimple_mem_ref_addr, | |
| 894 NULL_TREE, true, GSI_SAME_STMT); | |
| 895 } | |
| 896 parts.base = tmp; | |
| 0 | 897 |
|
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898 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); |
| 0 | 899 if (mem_ref) |
| 900 return mem_ref; | |
| 901 } | |
| 902 | |
| 111 | 903 /* Transform [base + offset] into: |
| 904 base' = base + offset; | |
| 905 [base']. */ | |
| 906 if (parts.offset && !integer_zerop (parts.offset)) | |
| 0 | 907 { |
| 111 | 908 tmp = parts.offset; |
| 909 parts.offset = NULL_TREE; | |
| 910 /* Add offset to base. */ | |
| 0 | 911 if (parts.base) |
| 912 { | |
| 111 | 913 tmp = fold_build_pointer_plus (parts.base, tmp); |
| 914 tmp = force_gimple_operand_gsi_1 (gsi, tmp, | |
| 915 is_gimple_mem_ref_addr, | |
| 916 NULL_TREE, true, GSI_SAME_STMT); | |
| 0 | 917 } |
| 111 | 918 parts.base = tmp; |
| 0 | 919 |
|
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920 mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true); |
| 0 | 921 if (mem_ref) |
| 922 return mem_ref; | |
| 923 } | |
| 924 | |
| 925 /* Verify that the address is in the simplest possible shape | |
| 926 (only a register). If we cannot create such a memory reference, | |
| 927 something is really wrong. */ | |
| 928 gcc_assert (parts.symbol == NULL_TREE); | |
| 929 gcc_assert (parts.index == NULL_TREE); | |
| 930 gcc_assert (!parts.step || integer_onep (parts.step)); | |
| 931 gcc_assert (!parts.offset || integer_zerop (parts.offset)); | |
| 932 gcc_unreachable (); | |
| 933 } | |
| 934 | |
| 935 /* Copies components of the address from OP to ADDR. */ | |
| 936 | |
| 937 void | |
| 938 get_address_description (tree op, struct mem_address *addr) | |
| 939 { | |
|
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940 if (TREE_CODE (TMR_BASE (op)) == ADDR_EXPR) |
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941 { |
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942 addr->symbol = TMR_BASE (op); |
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943 addr->base = TMR_INDEX2 (op); |
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944 } |
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945 else |
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946 { |
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947 addr->symbol = NULL_TREE; |
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948 if (TMR_INDEX2 (op)) |
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949 { |
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950 gcc_assert (integer_zerop (TMR_BASE (op))); |
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951 addr->base = TMR_INDEX2 (op); |
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952 } |
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953 else |
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954 addr->base = TMR_BASE (op); |
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955 } |
| 0 | 956 addr->index = TMR_INDEX (op); |
| 957 addr->step = TMR_STEP (op); | |
| 958 addr->offset = TMR_OFFSET (op); | |
| 959 } | |
| 960 | |
| 111 | 961 /* Copies the reference information from OLD_REF to NEW_REF, where |
| 962 NEW_REF should be either a MEM_REF or a TARGET_MEM_REF. */ | |
| 0 | 963 |
| 964 void | |
| 111 | 965 copy_ref_info (tree new_ref, tree old_ref) |
| 0 | 966 { |
| 111 | 967 tree new_ptr_base = NULL_TREE; |
| 968 | |
| 969 gcc_assert (TREE_CODE (new_ref) == MEM_REF | |
| 970 || TREE_CODE (new_ref) == TARGET_MEM_REF); | |
| 971 | |
| 972 TREE_SIDE_EFFECTS (new_ref) = TREE_SIDE_EFFECTS (old_ref); | |
| 973 TREE_THIS_VOLATILE (new_ref) = TREE_THIS_VOLATILE (old_ref); | |
| 974 | |
| 975 new_ptr_base = TREE_OPERAND (new_ref, 0); | |
| 976 | |
| 977 /* We can transfer points-to information from an old pointer | |
| 978 or decl base to the new one. */ | |
| 979 if (new_ptr_base | |
| 980 && TREE_CODE (new_ptr_base) == SSA_NAME | |
| 981 && !SSA_NAME_PTR_INFO (new_ptr_base)) | |
| 982 { | |
| 983 tree base = get_base_address (old_ref); | |
| 984 if (!base) | |
| 985 ; | |
| 986 else if ((TREE_CODE (base) == MEM_REF | |
| 987 || TREE_CODE (base) == TARGET_MEM_REF) | |
| 988 && TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME | |
| 989 && SSA_NAME_PTR_INFO (TREE_OPERAND (base, 0))) | |
| 990 { | |
| 991 struct ptr_info_def *new_pi; | |
| 992 unsigned int align, misalign; | |
| 993 | |
| 994 duplicate_ssa_name_ptr_info | |
| 995 (new_ptr_base, SSA_NAME_PTR_INFO (TREE_OPERAND (base, 0))); | |
| 996 new_pi = SSA_NAME_PTR_INFO (new_ptr_base); | |
| 997 /* We have to be careful about transferring alignment information. */ | |
| 998 if (get_ptr_info_alignment (new_pi, &align, &misalign) | |
| 999 && TREE_CODE (old_ref) == MEM_REF | |
| 1000 && !(TREE_CODE (new_ref) == TARGET_MEM_REF | |
| 1001 && (TMR_INDEX2 (new_ref) | |
| 1002 /* TODO: Below conditions can be relaxed if TMR_INDEX | |
| 1003 is an indcution variable and its initial value and | |
| 1004 step are aligned. */ | |
| 1005 || (TMR_INDEX (new_ref) && !TMR_STEP (new_ref)) | |
| 1006 || (TMR_STEP (new_ref) | |
| 1007 && (TREE_INT_CST_LOW (TMR_STEP (new_ref)) | |
| 1008 < align))))) | |
| 1009 { | |
| 1010 unsigned int inc = (mem_ref_offset (old_ref).to_short_addr () | |
| 1011 - mem_ref_offset (new_ref).to_short_addr ()); | |
| 1012 adjust_ptr_info_misalignment (new_pi, inc); | |
| 1013 } | |
| 1014 else | |
| 1015 mark_ptr_info_alignment_unknown (new_pi); | |
| 1016 } | |
| 1017 else if (VAR_P (base) | |
| 1018 || TREE_CODE (base) == PARM_DECL | |
| 1019 || TREE_CODE (base) == RESULT_DECL) | |
| 1020 { | |
| 1021 struct ptr_info_def *pi = get_ptr_info (new_ptr_base); | |
| 1022 pt_solution_set_var (&pi->pt, base); | |
| 1023 } | |
| 1024 } | |
| 0 | 1025 } |
| 1026 | |
| 1027 /* Move constants in target_mem_ref REF to offset. Returns the new target | |
| 1028 mem ref if anything changes, NULL_TREE otherwise. */ | |
| 1029 | |
| 1030 tree | |
| 1031 maybe_fold_tmr (tree ref) | |
| 1032 { | |
| 1033 struct mem_address addr; | |
| 1034 bool changed = false; | |
| 111 | 1035 tree new_ref, off; |
| 0 | 1036 |
| 1037 get_address_description (ref, &addr); | |
| 1038 | |
|
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1039 if (addr.base |
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1040 && TREE_CODE (addr.base) == INTEGER_CST |
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1041 && !integer_zerop (addr.base)) |
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1042 { |
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1043 addr.offset = fold_binary_to_constant (PLUS_EXPR, |
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1044 TREE_TYPE (addr.offset), |
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1045 addr.offset, addr.base); |
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1046 addr.base = NULL_TREE; |
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1047 changed = true; |
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1048 } |
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1049 |
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1050 if (addr.symbol |
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1051 && TREE_CODE (TREE_OPERAND (addr.symbol, 0)) == MEM_REF) |
| 0 | 1052 { |
|
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1053 addr.offset = fold_binary_to_constant |
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1054 (PLUS_EXPR, TREE_TYPE (addr.offset), |
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1055 addr.offset, |
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1056 TREE_OPERAND (TREE_OPERAND (addr.symbol, 0), 1)); |
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1057 addr.symbol = TREE_OPERAND (TREE_OPERAND (addr.symbol, 0), 0); |
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1058 changed = true; |
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1059 } |
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1060 else if (addr.symbol |
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1061 && handled_component_p (TREE_OPERAND (addr.symbol, 0))) |
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1062 { |
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1063 HOST_WIDE_INT offset; |
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1064 addr.symbol = build_fold_addr_expr |
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1065 (get_addr_base_and_unit_offset |
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1066 (TREE_OPERAND (addr.symbol, 0), &offset)); |
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1067 addr.offset = int_const_binop (PLUS_EXPR, |
| 111 | 1068 addr.offset, size_int (offset)); |
| 0 | 1069 changed = true; |
| 1070 } | |
| 1071 | |
| 1072 if (addr.index && TREE_CODE (addr.index) == INTEGER_CST) | |
| 1073 { | |
| 1074 off = addr.index; | |
| 1075 if (addr.step) | |
| 1076 { | |
| 1077 off = fold_binary_to_constant (MULT_EXPR, sizetype, | |
| 1078 off, addr.step); | |
| 1079 addr.step = NULL_TREE; | |
| 1080 } | |
| 1081 | |
|
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1082 addr.offset = fold_binary_to_constant (PLUS_EXPR, |
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1083 TREE_TYPE (addr.offset), |
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1084 addr.offset, off); |
| 0 | 1085 addr.index = NULL_TREE; |
| 1086 changed = true; | |
| 1087 } | |
| 1088 | |
| 1089 if (!changed) | |
| 1090 return NULL_TREE; | |
|
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1091 |
|
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1092 /* If we have propagated something into this TARGET_MEM_REF and thus |
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1093 ended up folding it, always create a new TARGET_MEM_REF regardless |
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1094 if it is valid in this for on the target - the propagation result |
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1095 wouldn't be anyway. */ |
| 111 | 1096 new_ref = create_mem_ref_raw (TREE_TYPE (ref), |
| 1097 TREE_TYPE (addr.offset), &addr, false); | |
| 1098 TREE_SIDE_EFFECTS (new_ref) = TREE_SIDE_EFFECTS (ref); | |
| 1099 TREE_THIS_VOLATILE (new_ref) = TREE_THIS_VOLATILE (ref); | |
| 1100 return new_ref; | |
| 0 | 1101 } |
| 1102 | |
| 1103 /* Dump PARTS to FILE. */ | |
| 1104 | |
| 1105 extern void dump_mem_address (FILE *, struct mem_address *); | |
| 1106 void | |
| 1107 dump_mem_address (FILE *file, struct mem_address *parts) | |
| 1108 { | |
| 1109 if (parts->symbol) | |
| 1110 { | |
| 1111 fprintf (file, "symbol: "); | |
|
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1112 print_generic_expr (file, TREE_OPERAND (parts->symbol, 0), TDF_SLIM); |
| 0 | 1113 fprintf (file, "\n"); |
| 1114 } | |
| 1115 if (parts->base) | |
| 1116 { | |
| 1117 fprintf (file, "base: "); | |
| 1118 print_generic_expr (file, parts->base, TDF_SLIM); | |
| 1119 fprintf (file, "\n"); | |
| 1120 } | |
| 1121 if (parts->index) | |
| 1122 { | |
| 1123 fprintf (file, "index: "); | |
| 1124 print_generic_expr (file, parts->index, TDF_SLIM); | |
| 1125 fprintf (file, "\n"); | |
| 1126 } | |
| 1127 if (parts->step) | |
| 1128 { | |
| 1129 fprintf (file, "step: "); | |
| 1130 print_generic_expr (file, parts->step, TDF_SLIM); | |
| 1131 fprintf (file, "\n"); | |
| 1132 } | |
| 1133 if (parts->offset) | |
| 1134 { | |
| 1135 fprintf (file, "offset: "); | |
| 1136 print_generic_expr (file, parts->offset, TDF_SLIM); | |
| 1137 fprintf (file, "\n"); | |
| 1138 } | |
| 1139 } | |
| 1140 | |
| 1141 #include "gt-tree-ssa-address.h" |