OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
(...skipping 1269 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1280 LOperand* divisor = UseRegister(instr->right()); | 1280 LOperand* divisor = UseRegister(instr->right()); |
1281 LDivI* result = new(zone()) LDivI(dividend, divisor, temp); | 1281 LDivI* result = new(zone()) LDivI(dividend, divisor, temp); |
1282 return AssignEnvironment(DefineFixed(result, rax)); | 1282 return AssignEnvironment(DefineFixed(result, rax)); |
1283 } else { | 1283 } else { |
1284 ASSERT(instr->representation().IsTagged()); | 1284 ASSERT(instr->representation().IsTagged()); |
1285 return DoArithmeticT(Token::DIV, instr); | 1285 return DoArithmeticT(Token::DIV, instr); |
1286 } | 1286 } |
1287 } | 1287 } |
1288 | 1288 |
1289 | 1289 |
| 1290 HValue* LChunkBuilder::SimplifiedDividendForMathFloorOfDiv(HValue* dividend) { |
| 1291 // A value with an integer representation does not need to be transformed. |
| 1292 if (dividend->representation().IsInteger32()) { |
| 1293 return dividend; |
| 1294 // A change from an integer32 can be replaced by the integer32 value. |
| 1295 } else if (dividend->IsChange() && |
| 1296 HChange::cast(dividend)->from().IsInteger32()) { |
| 1297 return HChange::cast(dividend)->value(); |
| 1298 } |
| 1299 return NULL; |
| 1300 } |
| 1301 |
| 1302 |
| 1303 HValue* LChunkBuilder::SimplifiedDivisorForMathFloorOfDiv(HValue* divisor) { |
| 1304 if (divisor->IsConstant() && |
| 1305 HConstant::cast(divisor)->HasInteger32Value()) { |
| 1306 HConstant* constant_val = HConstant::cast(divisor); |
| 1307 return constant_val->CopyToRepresentation(Representation::Integer32(), |
| 1308 divisor->block()->zone()); |
| 1309 } |
| 1310 return NULL; |
| 1311 } |
| 1312 |
| 1313 |
1290 LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) { | 1314 LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) { |
1291 UNIMPLEMENTED(); | 1315 HValue* right = instr->right(); |
1292 return NULL; | 1316 ASSERT(right->IsConstant() && HConstant::cast(right)->HasInteger32Value()); |
| 1317 LOperand* divisor = chunk_->DefineConstantOperand(HConstant::cast(right)); |
| 1318 int32_t divisor_si = HConstant::cast(right)->Integer32Value(); |
| 1319 if (divisor_si == 0) { |
| 1320 LOperand* dividend = UseRegister(instr->left()); |
| 1321 return AssignEnvironment(DefineAsRegister( |
| 1322 new(zone()) LMathFloorOfDiv(dividend, divisor, NULL))); |
| 1323 } else if (IsPowerOf2(abs(divisor_si))) { |
| 1324 LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1325 LInstruction* result = DefineAsRegister( |
| 1326 new(zone()) LMathFloorOfDiv(dividend, divisor, NULL)); |
| 1327 return divisor_si < 0 ? AssignEnvironment(result) : result; |
| 1328 } else { |
| 1329 // use two r64 |
| 1330 LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1331 LOperand* temp = TempRegister(); |
| 1332 LInstruction* result = DefineAsRegister( |
| 1333 new(zone()) LMathFloorOfDiv(dividend, divisor, temp)); |
| 1334 return divisor_si < 0 ? AssignEnvironment(result) : result; |
| 1335 } |
1293 } | 1336 } |
1294 | 1337 |
1295 | 1338 |
1296 LInstruction* LChunkBuilder::DoMod(HMod* instr) { | 1339 LInstruction* LChunkBuilder::DoMod(HMod* instr) { |
1297 if (instr->representation().IsInteger32()) { | 1340 if (instr->representation().IsInteger32()) { |
1298 ASSERT(instr->left()->representation().IsInteger32()); | 1341 ASSERT(instr->left()->representation().IsInteger32()); |
1299 ASSERT(instr->right()->representation().IsInteger32()); | 1342 ASSERT(instr->right()->representation().IsInteger32()); |
1300 | 1343 |
1301 LInstruction* result; | 1344 LInstruction* result; |
1302 if (instr->HasPowerOf2Divisor()) { | 1345 if (instr->HasPowerOf2Divisor()) { |
(...skipping 1023 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
2326 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { | 2369 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
2327 LOperand* object = UseRegister(instr->object()); | 2370 LOperand* object = UseRegister(instr->object()); |
2328 LOperand* index = UseTempRegister(instr->index()); | 2371 LOperand* index = UseTempRegister(instr->index()); |
2329 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); | 2372 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); |
2330 } | 2373 } |
2331 | 2374 |
2332 | 2375 |
2333 } } // namespace v8::internal | 2376 } } // namespace v8::internal |
2334 | 2377 |
2335 #endif // V8_TARGET_ARCH_X64 | 2378 #endif // V8_TARGET_ARCH_X64 |
OLD | NEW |