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| author | Rik <rik@octave.org> |
|---|---|
| date | Thu, 14 May 2015 14:25:37 -0700 |
| parents | 4197fc428c7d |
| children | 7077b494c8d2 |
| rev | line source |
|---|---|
| 15016 | 1 /* |
| 2 | |
|
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3 Copyright (C) 2012-2015 Max Brister |
| 15016 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 3 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY 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. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with Octave; see the file COPYING. If not, see | |
| 19 <http://www.gnu.org/licenses/>. | |
| 20 | |
| 21 */ | |
| 22 | |
| 16768 | 23 // Author: Max Brister <max@2bass.com> |
| 24 | |
| 15016 | 25 // defines required by llvm |
| 26 #define __STDC_LIMIT_MACROS | |
| 27 #define __STDC_CONSTANT_MACROS | |
| 28 | |
| 29 #ifdef HAVE_CONFIG_H | |
| 30 #include <config.h> | |
| 31 #endif | |
| 32 | |
| 33 #ifdef HAVE_LLVM | |
| 34 | |
| 35 #include "jit-ir.h" | |
| 36 | |
| 17164 | 37 #ifdef HAVE_LLVM_IR_FUNCTION_H |
| 38 #include <llvm/IR/BasicBlock.h> | |
| 39 #include <llvm/IR/Instructions.h> | |
| 40 #else | |
| 15016 | 41 #include <llvm/BasicBlock.h> |
| 42 #include <llvm/Instructions.h> | |
| 17164 | 43 #endif |
| 15016 | 44 |
| 45 #include "error.h" | |
|
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46 |
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47 // -------------------- jit_factory -------------------- |
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48 jit_factory::~jit_factory (void) |
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49 { |
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50 for (value_list::iterator iter = all_values.begin (); |
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51 iter != all_values.end (); ++iter) |
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52 delete *iter; |
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53 } |
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54 |
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55 void |
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56 jit_factory::track_value (jit_value *value) |
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57 { |
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58 if (value->type ()) |
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59 mconstants.push_back (value); |
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60 all_values.push_back (value); |
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61 } |
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62 |
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63 // -------------------- jit_block_list -------------------- |
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64 void |
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65 jit_block_list::insert_after (iterator iter, jit_block *ablock) |
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66 { |
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67 ++iter; |
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68 insert_before (iter, ablock); |
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69 } |
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70 |
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71 void |
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72 jit_block_list::insert_after (jit_block *loc, jit_block *ablock) |
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73 { |
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74 insert_after (loc->location (), ablock); |
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75 } |
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76 |
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77 void |
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78 jit_block_list::insert_before (iterator iter, jit_block *ablock) |
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79 { |
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80 iter = mlist.insert (iter, ablock); |
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81 ablock->stash_location (iter); |
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82 } |
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83 |
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84 void |
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85 jit_block_list::insert_before (jit_block *loc, jit_block *ablock) |
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86 { |
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87 insert_before (loc->location (), ablock); |
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88 } |
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89 |
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90 void |
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91 jit_block_list::label (void) |
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92 { |
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93 if (mlist.size ()) |
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94 { |
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95 jit_block *block = mlist.back (); |
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96 block->label (); |
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97 } |
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98 } |
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99 |
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100 std::ostream& |
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101 jit_block_list::print (std::ostream& os, const std::string& header) const |
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102 { |
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103 os << "-------------------- " << header << " --------------------\n"; |
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104 return os << *this; |
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105 } |
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106 |
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107 std::ostream& |
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108 jit_block_list::print_dom (std::ostream& os) const |
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109 { |
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110 os << "-------------------- dom info --------------------\n"; |
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111 for (const_iterator iter = begin (); iter != end (); ++iter) |
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112 { |
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113 assert (*iter); |
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114 (*iter)->print_dom (os); |
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115 } |
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116 os << std::endl; |
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117 |
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118 return os; |
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119 } |
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120 |
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121 void |
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122 jit_block_list::push_back (jit_block *b) |
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123 { |
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124 mlist.push_back (b); |
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125 iterator iter = mlist.end (); |
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126 b->stash_location (--iter); |
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127 } |
| 15016 | 128 |
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129 std::ostream& |
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130 operator<<(std::ostream& os, const jit_block_list& blocks) |
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131 { |
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132 for (jit_block_list::const_iterator iter = blocks.begin (); |
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133 iter != blocks.end (); ++iter) |
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134 { |
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135 assert (*iter); |
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136 (*iter)->print (os, 0); |
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137 } |
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138 return os << std::endl; |
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139 } |
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140 |
| 15016 | 141 // -------------------- jit_use -------------------- |
| 142 jit_block * | |
| 143 jit_use::user_parent (void) const | |
| 144 { | |
| 145 return muser->parent (); | |
| 146 } | |
| 147 | |
| 148 // -------------------- jit_value -------------------- | |
| 149 jit_value::~jit_value (void) | |
| 150 {} | |
| 151 | |
| 152 jit_block * | |
| 153 jit_value::first_use_block (void) | |
| 154 { | |
| 155 jit_use *use = first_use (); | |
| 156 while (use) | |
| 157 { | |
| 158 if (! isa<jit_error_check> (use->user ())) | |
| 159 return use->user_parent (); | |
| 160 | |
| 161 use = use->next (); | |
| 162 } | |
| 163 | |
| 164 return 0; | |
| 165 } | |
| 166 | |
| 167 void | |
| 168 jit_value::replace_with (jit_value *value) | |
| 169 { | |
| 170 while (first_use ()) | |
| 171 { | |
| 172 jit_instruction *user = first_use ()->user (); | |
| 173 size_t idx = first_use ()->index (); | |
| 174 user->stash_argument (idx, value); | |
| 175 } | |
| 176 } | |
| 177 | |
| 178 #define JIT_METH(clname) \ | |
| 179 void \ | |
| 180 jit_ ## clname::accept (jit_ir_walker& walker) \ | |
| 181 { \ | |
| 182 walker.visit (*this); \ | |
| 183 } | |
| 184 | |
| 185 JIT_VISIT_IR_NOTEMPLATE | |
| 186 #undef JIT_METH | |
| 187 | |
| 188 std::ostream& | |
| 189 operator<< (std::ostream& os, const jit_value& value) | |
| 190 { | |
| 191 return value.short_print (os); | |
| 192 } | |
| 193 | |
| 194 std::ostream& | |
| 195 jit_print (std::ostream& os, jit_value *avalue) | |
| 196 { | |
| 197 if (avalue) | |
| 198 return avalue->print (os); | |
| 199 return os << "NULL"; | |
| 200 } | |
| 201 | |
| 202 // -------------------- jit_instruction -------------------- | |
| 203 void | |
| 204 jit_instruction::remove (void) | |
| 205 { | |
| 206 if (mparent) | |
| 207 mparent->remove (mlocation); | |
| 208 resize_arguments (0); | |
| 209 } | |
| 210 | |
| 211 llvm::BasicBlock * | |
| 212 jit_instruction::parent_llvm (void) const | |
| 213 { | |
| 214 return mparent->to_llvm (); | |
| 215 } | |
| 216 | |
| 217 std::ostream& | |
| 218 jit_instruction::short_print (std::ostream& os) const | |
| 219 { | |
| 220 if (type ()) | |
| 221 jit_print (os, type ()) << ": "; | |
| 222 return os << "#" << mid; | |
| 223 } | |
| 224 | |
| 225 void | |
| 226 jit_instruction::do_construct_ssa (size_t start, size_t end) | |
| 227 { | |
| 228 for (size_t i = start; i < end; ++i) | |
| 229 { | |
| 230 jit_value *arg = argument (i); | |
| 231 jit_variable *var = dynamic_cast<jit_variable *> (arg); | |
| 232 if (var && var->has_top ()) | |
| 233 stash_argument (i, var->top ()); | |
| 234 } | |
| 235 } | |
| 236 | |
| 237 // -------------------- jit_block -------------------- | |
| 238 void | |
| 239 jit_block::replace_with (jit_value *value) | |
| 240 { | |
| 241 assert (isa<jit_block> (value)); | |
| 242 jit_block *block = static_cast<jit_block *> (value); | |
| 243 | |
| 244 jit_value::replace_with (block); | |
| 245 | |
| 246 while (ILIST_T::first_use ()) | |
| 247 { | |
| 248 jit_phi_incomming *incomming = ILIST_T::first_use (); | |
| 249 incomming->stash_value (block); | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 void | |
| 254 jit_block::replace_in_phi (jit_block *ablock, jit_block *with) | |
| 255 { | |
| 256 jit_phi_incomming *node = ILIST_T::first_use (); | |
| 257 while (node) | |
| 258 { | |
| 259 jit_phi_incomming *prev = node; | |
| 260 node = node->next (); | |
| 261 | |
| 262 if (prev->user_parent () == ablock) | |
| 263 prev->stash_value (with); | |
| 264 } | |
| 265 } | |
| 266 | |
| 267 jit_block * | |
| 268 jit_block::maybe_merge () | |
| 269 { | |
| 270 if (successor_count () == 1 && successor (0) != this | |
| 271 && (successor (0)->use_count () == 1 || instructions.size () == 1)) | |
| 272 { | |
| 273 jit_block *to_merge = successor (0); | |
| 274 merge (*to_merge); | |
| 275 return to_merge; | |
| 276 } | |
| 277 | |
| 278 return 0; | |
| 279 } | |
| 280 | |
| 281 void | |
| 282 jit_block::merge (jit_block& block) | |
| 283 { | |
| 284 // the merge block will contain a new terminator | |
| 285 jit_terminator *old_term = terminator (); | |
| 286 if (old_term) | |
| 287 old_term->remove (); | |
| 288 | |
| 289 bool was_empty = end () == begin (); | |
| 290 iterator merge_begin = end (); | |
| 291 if (! was_empty) | |
| 292 --merge_begin; | |
| 293 | |
| 294 instructions.splice (end (), block.instructions); | |
| 295 if (was_empty) | |
| 296 merge_begin = begin (); | |
| 297 else | |
| 298 ++merge_begin; | |
| 299 | |
| 300 // now merge_begin points to the start of the new instructions, we must | |
| 301 // update their parent information | |
| 302 for (iterator iter = merge_begin; iter != end (); ++iter) | |
| 303 { | |
| 304 jit_instruction *instr = *iter; | |
| 305 instr->stash_parent (this, iter); | |
| 306 } | |
| 307 | |
| 308 block.replace_with (this); | |
| 309 } | |
| 310 | |
| 311 jit_instruction * | |
| 312 jit_block::prepend (jit_instruction *instr) | |
| 313 { | |
| 314 instructions.push_front (instr); | |
| 315 instr->stash_parent (this, instructions.begin ()); | |
| 316 return instr; | |
| 317 } | |
| 318 | |
| 319 jit_instruction * | |
| 320 jit_block::prepend_after_phi (jit_instruction *instr) | |
| 321 { | |
| 322 // FIXME: Make this O(1) | |
| 323 for (iterator iter = begin (); iter != end (); ++iter) | |
| 324 { | |
| 325 jit_instruction *temp = *iter; | |
| 326 if (! isa<jit_phi> (temp)) | |
| 327 { | |
| 328 insert_before (iter, instr); | |
| 329 return instr; | |
| 330 } | |
| 331 } | |
| 332 | |
| 333 return append (instr); | |
| 334 } | |
| 335 | |
| 336 void | |
| 337 jit_block::internal_append (jit_instruction *instr) | |
| 338 { | |
| 339 instructions.push_back (instr); | |
| 340 instr->stash_parent (this, --instructions.end ()); | |
| 341 } | |
| 342 | |
| 343 jit_instruction * | |
| 344 jit_block::insert_before (iterator loc, jit_instruction *instr) | |
| 345 { | |
| 346 iterator iloc = instructions.insert (loc, instr); | |
| 347 instr->stash_parent (this, iloc); | |
| 348 return instr; | |
| 349 } | |
| 350 | |
| 351 jit_instruction * | |
| 352 jit_block::insert_after (iterator loc, jit_instruction *instr) | |
| 353 { | |
| 354 ++loc; | |
| 355 iterator iloc = instructions.insert (loc, instr); | |
| 356 instr->stash_parent (this, iloc); | |
| 357 return instr; | |
| 358 } | |
| 359 | |
| 360 jit_terminator * | |
| 361 jit_block::terminator (void) const | |
| 362 { | |
| 363 assert (this); | |
| 364 if (instructions.empty ()) | |
| 365 return 0; | |
| 366 | |
| 367 jit_instruction *last = instructions.back (); | |
| 368 return dynamic_cast<jit_terminator *> (last); | |
| 369 } | |
| 370 | |
| 371 bool | |
| 372 jit_block::branch_alive (jit_block *asucc) const | |
| 373 { | |
| 374 return terminator ()->alive (asucc); | |
| 375 } | |
| 376 | |
| 377 jit_block * | |
| 378 jit_block::successor (size_t i) const | |
| 379 { | |
| 380 jit_terminator *term = terminator (); | |
| 381 return term->successor (i); | |
| 382 } | |
| 383 | |
| 384 size_t | |
| 385 jit_block::successor_count (void) const | |
| 386 { | |
| 387 jit_terminator *term = terminator (); | |
| 388 return term ? term->successor_count () : 0; | |
| 389 } | |
| 390 | |
| 391 llvm::BasicBlock * | |
| 392 jit_block::to_llvm (void) const | |
| 393 { | |
| 394 return llvm::cast<llvm::BasicBlock> (llvm_value); | |
| 395 } | |
| 396 | |
| 397 std::ostream& | |
| 398 jit_block::print_dom (std::ostream& os) const | |
| 399 { | |
| 400 short_print (os); | |
| 401 os << ":\n"; | |
| 402 os << " mid: " << mid << std::endl; | |
| 403 os << " predecessors: "; | |
| 404 for (jit_use *use = first_use (); use; use = use->next ()) | |
| 405 os << *use->user_parent () << " "; | |
| 406 os << std::endl; | |
| 407 | |
| 408 os << " successors: "; | |
| 409 for (size_t i = 0; i < successor_count (); ++i) | |
| 410 os << *successor (i) << " "; | |
| 411 os << std::endl; | |
| 412 | |
| 413 os << " idom: "; | |
| 414 if (idom) | |
| 415 os << *idom; | |
| 416 else | |
| 417 os << "NULL"; | |
| 418 os << std::endl; | |
| 419 os << " df: "; | |
| 420 for (df_iterator iter = df_begin (); iter != df_end (); ++iter) | |
| 421 os << **iter << " "; | |
| 422 os << std::endl; | |
| 423 | |
| 424 os << " dom_succ: "; | |
| 425 for (size_t i = 0; i < dom_succ.size (); ++i) | |
| 426 os << *dom_succ[i] << " "; | |
| 427 | |
| 428 return os << std::endl; | |
| 429 } | |
| 430 | |
| 431 void | |
| 432 jit_block::compute_df (size_t avisit_count) | |
| 433 { | |
| 434 if (visited (avisit_count)) | |
| 435 return; | |
| 436 | |
| 437 if (use_count () >= 2) | |
| 438 { | |
| 439 for (jit_use *use = first_use (); use; use = use->next ()) | |
| 440 { | |
| 441 jit_block *runner = use->user_parent (); | |
| 442 while (runner != idom) | |
| 443 { | |
| 444 runner->mdf.insert (this); | |
| 445 runner = runner->idom; | |
| 446 } | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 for (size_t i = 0; i < successor_count (); ++i) | |
| 451 successor (i)->compute_df (avisit_count); | |
| 452 } | |
| 453 | |
| 454 bool | |
| 455 jit_block::update_idom (size_t avisit_count) | |
| 456 { | |
| 457 if (visited (avisit_count) || ! use_count ()) | |
| 458 return false; | |
| 459 | |
| 460 bool changed = false; | |
| 461 for (jit_use *use = first_use (); use; use = use->next ()) | |
| 462 { | |
| 463 jit_block *pred = use->user_parent (); | |
| 464 changed = pred->update_idom (avisit_count) || changed; | |
| 465 } | |
| 466 | |
| 467 jit_use *use = first_use (); | |
| 468 jit_block *new_idom = use->user_parent (); | |
| 469 use = use->next (); | |
| 470 | |
| 471 for (; use; use = use->next ()) | |
| 472 { | |
| 473 jit_block *pred = use->user_parent (); | |
| 474 jit_block *pidom = pred->idom; | |
| 475 if (pidom) | |
| 476 new_idom = idom_intersect (pidom, new_idom); | |
| 477 } | |
| 478 | |
| 479 if (idom != new_idom) | |
| 480 { | |
| 481 idom = new_idom; | |
| 482 return true; | |
| 483 } | |
| 484 | |
| 485 return changed; | |
| 486 } | |
| 487 | |
| 488 void | |
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489 jit_block::label (size_t avisit_count, size_t& number) |
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490 { |
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491 if (visited (avisit_count)) |
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492 return; |
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493 |
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494 for (jit_use *use = first_use (); use; use = use->next ()) |
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495 { |
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496 jit_block *pred = use->user_parent (); |
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497 pred->label (avisit_count, number); |
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498 } |
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499 |
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500 mid = number++; |
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501 } |
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502 |
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503 void |
| 15016 | 504 jit_block::pop_all (void) |
| 505 { | |
| 506 for (iterator iter = begin (); iter != end (); ++iter) | |
| 507 { | |
| 508 jit_instruction *instr = *iter; | |
| 509 instr->pop_variable (); | |
| 510 } | |
| 511 } | |
| 512 | |
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513 std::ostream& |
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514 jit_block::print (std::ostream& os, size_t indent) const |
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515 { |
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516 print_indent (os, indent); |
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517 short_print (os) << ": %pred = "; |
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518 for (jit_use *use = first_use (); use; use = use->next ()) |
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519 { |
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520 jit_block *pred = use->user_parent (); |
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521 os << *pred; |
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522 if (use->next ()) |
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523 os << ", "; |
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524 } |
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525 os << std::endl; |
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526 |
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527 for (const_iterator iter = begin (); iter != end (); ++iter) |
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528 { |
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529 jit_instruction *instr = *iter; |
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530 instr->print (os, indent + 1) << std::endl; |
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531 } |
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532 return os; |
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533 } |
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534 |
| 15016 | 535 jit_block * |
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536 jit_block::maybe_split (jit_factory& factory, jit_block_list& blocks, |
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537 jit_block *asuccessor) |
| 15016 | 538 { |
| 539 if (successor_count () > 1) | |
| 540 { | |
| 541 jit_terminator *term = terminator (); | |
| 542 size_t idx = term->successor_index (asuccessor); | |
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543 jit_block *split = factory.create<jit_block> ("phi_split", mvisit_count); |
| 15016 | 544 |
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545 // place after this to ensure define before use in the blocks list |
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546 blocks.insert_after (this, split); |
| 15016 | 547 |
| 548 term->stash_argument (idx, split); | |
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549 jit_branch *br = split->append (factory.create<jit_branch> (asuccessor)); |
| 15016 | 550 replace_in_phi (asuccessor, split); |
| 551 | |
| 552 if (alive ()) | |
| 553 { | |
| 554 split->mark_alive (); | |
| 555 br->infer (); | |
| 556 } | |
| 557 | |
| 558 return split; | |
| 559 } | |
| 560 | |
| 561 return this; | |
| 562 } | |
| 563 | |
| 564 void | |
| 565 jit_block::create_dom_tree (size_t avisit_count) | |
| 566 { | |
| 567 if (visited (avisit_count)) | |
| 568 return; | |
| 569 | |
| 570 if (idom != this) | |
| 571 idom->dom_succ.push_back (this); | |
| 572 | |
| 573 for (size_t i = 0; i < successor_count (); ++i) | |
| 574 successor (i)->create_dom_tree (avisit_count); | |
| 575 } | |
| 576 | |
| 577 jit_block * | |
| 578 jit_block::idom_intersect (jit_block *i, jit_block *j) | |
| 579 { | |
| 580 while (i && j && i != j) | |
| 581 { | |
| 582 while (i && i->id () > j->id ()) | |
| 583 i = i->idom; | |
| 584 | |
| 585 while (i && j && j->id () > i->id ()) | |
| 586 j = j->idom; | |
| 587 } | |
| 588 | |
| 589 return i ? i : j; | |
| 590 } | |
| 591 | |
| 592 // -------------------- jit_phi_incomming -------------------- | |
| 593 | |
| 594 jit_block * | |
| 595 jit_phi_incomming::user_parent (void) const | |
| 596 { return muser->parent (); } | |
| 597 | |
| 598 // -------------------- jit_phi -------------------- | |
| 599 bool | |
| 600 jit_phi::prune (void) | |
| 601 { | |
| 602 jit_block *p = parent (); | |
| 603 size_t new_idx = 0; | |
| 604 jit_value *unique = argument (1); | |
| 605 | |
| 606 for (size_t i = 0; i < argument_count (); ++i) | |
| 607 { | |
| 608 jit_block *inc = incomming (i); | |
| 609 if (inc->branch_alive (p)) | |
| 610 { | |
| 611 if (unique != argument (i)) | |
| 612 unique = 0; | |
| 613 | |
| 614 if (new_idx != i) | |
| 615 { | |
| 616 stash_argument (new_idx, argument (i)); | |
| 617 mincomming[new_idx].stash_value (inc); | |
| 618 } | |
| 619 | |
| 620 ++new_idx; | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 if (new_idx != argument_count ()) | |
| 625 { | |
| 626 resize_arguments (new_idx); | |
| 627 mincomming.resize (new_idx); | |
| 628 } | |
| 629 | |
| 630 assert (argument_count () > 0); | |
| 631 if (unique) | |
| 632 { | |
| 633 replace_with (unique); | |
| 634 return true; | |
| 635 } | |
| 636 | |
| 637 return false; | |
| 638 } | |
| 639 | |
| 640 bool | |
| 641 jit_phi::infer (void) | |
| 642 { | |
| 643 jit_block *p = parent (); | |
| 644 if (! p->alive ()) | |
| 645 return false; | |
| 646 | |
| 647 jit_type *infered = 0; | |
| 648 for (size_t i = 0; i < argument_count (); ++i) | |
| 649 { | |
| 650 jit_block *inc = incomming (i); | |
| 651 if (inc->branch_alive (p)) | |
| 652 infered = jit_typeinfo::join (infered, argument_type (i)); | |
| 653 } | |
| 654 | |
| 655 if (infered != type ()) | |
| 656 { | |
| 657 stash_type (infered); | |
| 658 return true; | |
| 659 } | |
| 660 | |
| 661 return false; | |
| 662 } | |
| 663 | |
| 664 llvm::PHINode * | |
| 665 jit_phi::to_llvm (void) const | |
| 666 { | |
| 667 return llvm::cast<llvm::PHINode> (jit_value::to_llvm ()); | |
| 668 } | |
| 669 | |
| 670 // -------------------- jit_terminator -------------------- | |
| 671 size_t | |
| 672 jit_terminator::successor_index (const jit_block *asuccessor) const | |
| 673 { | |
| 674 size_t scount = successor_count (); | |
| 675 for (size_t i = 0; i < scount; ++i) | |
| 676 if (successor (i) == asuccessor) | |
| 677 return i; | |
| 678 | |
| 679 panic_impossible (); | |
| 680 } | |
| 681 | |
| 682 bool | |
| 683 jit_terminator::infer (void) | |
| 684 { | |
| 685 if (! parent ()->alive ()) | |
| 686 return false; | |
| 687 | |
| 688 bool changed = false; | |
| 689 for (size_t i = 0; i < malive.size (); ++i) | |
| 690 if (! malive[i] && check_alive (i)) | |
| 691 { | |
| 692 changed = true; | |
| 693 malive[i] = true; | |
| 694 successor (i)->mark_alive (); | |
| 695 } | |
| 696 | |
| 697 return changed; | |
| 698 } | |
| 699 | |
| 700 llvm::TerminatorInst * | |
| 701 jit_terminator::to_llvm (void) const | |
| 702 { | |
| 703 return llvm::cast<llvm::TerminatorInst> (jit_value::to_llvm ()); | |
| 704 } | |
| 705 | |
| 706 // -------------------- jit_call -------------------- | |
| 707 bool | |
| 15603 | 708 jit_call::needs_release (void) const |
| 709 { | |
| 710 if (type () && jit_typeinfo::get_release (type ()).valid ()) | |
| 711 { | |
| 712 for (jit_use *use = first_use (); use; use = use->next ()) | |
| 713 { | |
| 714 jit_assign *assign = dynamic_cast<jit_assign *> (use->user ()); | |
| 715 if (assign && assign->artificial ()) | |
| 716 return false; | |
| 717 } | |
| 718 | |
| 719 return true; | |
| 720 } | |
| 721 return false; | |
| 722 } | |
| 723 | |
| 724 bool | |
| 15016 | 725 jit_call::infer (void) |
| 726 { | |
| 727 // FIXME: explain algorithm | |
| 728 for (size_t i = 0; i < argument_count (); ++i) | |
| 729 { | |
| 730 already_infered[i] = argument_type (i); | |
| 731 if (! already_infered[i]) | |
| 732 return false; | |
| 733 } | |
| 734 | |
| 735 jit_type *infered = moperation.result (already_infered); | |
| 736 if (! infered && use_count ()) | |
| 737 { | |
| 738 std::stringstream ss; | |
| 739 ss << "Missing overload in type inference for "; | |
| 740 print (ss, 0); | |
| 741 throw jit_fail_exception (ss.str ()); | |
| 742 } | |
| 743 | |
| 744 if (infered != type ()) | |
| 745 { | |
| 746 stash_type (infered); | |
| 747 return true; | |
| 748 } | |
| 749 | |
| 750 return false; | |
| 751 } | |
| 752 | |
| 15603 | 753 // -------------------- jit_error_check -------------------- |
| 754 std::string | |
| 755 jit_error_check::variable_to_string (variable v) | |
| 756 { | |
| 757 switch (v) | |
| 758 { | |
| 759 case var_error_state: | |
| 760 return "error_state"; | |
| 761 case var_interrupt: | |
| 762 return "interrupt"; | |
| 763 default: | |
| 764 panic_impossible (); | |
| 765 } | |
| 766 } | |
| 767 | |
| 768 std::ostream& | |
| 769 jit_error_check::print (std::ostream& os, size_t indent) const | |
| 770 { | |
| 771 print_indent (os, indent) << "error_check " << variable_to_string (mvariable) | |
| 772 << ", "; | |
| 773 | |
| 774 if (has_check_for ()) | |
| 775 os << "<for> " << *check_for () << ", "; | |
| 776 print_successor (os << "<normal> ", 1) << ", "; | |
| 777 return print_successor (os << "<error> ", 0); | |
| 778 } | |
| 779 | |
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780 // -------------------- jit_magic_end -------------------- |
|
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781 jit_magic_end::context::context (jit_factory& factory, jit_value *avalue, |
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782 size_t aindex, size_t acount) |
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783 : value (avalue), index (factory.create<jit_const_index> (aindex)), |
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784 count (factory.create<jit_const_index> (acount)) |
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785 {} |
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786 |
| 15067 | 787 jit_magic_end::jit_magic_end (const std::vector<context>& full_context) |
|
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788 : contexts (full_context) |
| 15067 | 789 { |
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790 resize_arguments (contexts.size ()); |
| 15067 | 791 |
| 792 size_t i; | |
| 793 std::vector<context>::const_iterator iter; | |
|
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794 for (iter = contexts.begin (), i = 0; iter != contexts.end (); ++iter, ++i) |
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795 stash_argument (i, iter->value); |
| 15067 | 796 } |
| 797 | |
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798 jit_magic_end::context |
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799 jit_magic_end::resolve_context (void) const |
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800 { |
|
15124
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801 size_t idx; |
|
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802 for (idx = 0; idx < contexts.size (); ++idx) |
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803 { |
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804 jit_type *ctx_type = contexts[idx].value->type (); |
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805 if (! ctx_type || ctx_type->skip_paren ()) |
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806 break; |
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807 } |
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808 |
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809 if (idx >= contexts.size ()) |
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810 idx = 0; |
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811 |
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812 context ret = contexts[idx]; |
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813 ret.value = argument (idx); |
|
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814 return ret; |
|
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815 } |
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816 |
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817 bool |
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818 jit_magic_end::infer (void) |
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819 { |
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820 jit_type *new_type = overload ().result (); |
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821 if (new_type != type ()) |
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822 { |
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823 stash_type (new_type); |
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824 return true; |
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825 } |
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826 |
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827 return false; |
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828 } |
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829 |
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830 std::ostream& |
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831 jit_magic_end::print (std::ostream& os, size_t indent) const |
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832 { |
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833 context ctx = resolve_context (); |
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834 short_print (print_indent (os, indent)) << " (" << *ctx.value << ", "; |
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835 return os << *ctx.index << ", " << *ctx.count << ")"; |
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836 } |
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837 |
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|
838 const jit_function& |
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839 jit_magic_end::overload () const |
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840 { |
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841 const context& ctx = resolve_context (); |
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842 return jit_typeinfo::end (ctx.value, ctx.index, ctx.count); |
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843 } |
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844 |
| 15016 | 845 #endif |