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| 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 |
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| 407 XMMRegister temp, | 407 XMMRegister temp, |
| 408 MinusZeroMode minus_zero_mode, | 408 MinusZeroMode minus_zero_mode, |
| 409 Label* lost_precision) { | 409 Label* lost_precision) { |
| 410 Label done; | 410 Label done; |
| 411 ASSERT(!temp.is(xmm0)); | 411 ASSERT(!temp.is(xmm0)); |
| 412 | 412 |
| 413 cmp(FieldOperand(input_reg, HeapObject::kMapOffset), | 413 cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 414 isolate()->factory()->heap_number_map()); | 414 isolate()->factory()->heap_number_map()); |
| 415 j(not_equal, lost_precision, Label::kNear); | 415 j(not_equal, lost_precision, Label::kNear); |
| 416 | 416 |
| 417 if (CpuFeatures::IsSafeForSnapshot(SSE2)) { | 417 if (CpuFeatures::IsSafeForSnapshot(isolate(), SSE2)) { |
| 418 ASSERT(!temp.is(no_xmm_reg)); | 418 ASSERT(!temp.is(no_xmm_reg)); |
| 419 CpuFeatureScope scope(this, SSE2); | 419 CpuFeatureScope scope(this, SSE2); |
| 420 | 420 |
| 421 movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); | 421 movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 422 cvttsd2si(result_reg, Operand(xmm0)); | 422 cvttsd2si(result_reg, Operand(xmm0)); |
| 423 Cvtsi2sd(temp, Operand(result_reg)); | 423 Cvtsi2sd(temp, Operand(result_reg)); |
| 424 ucomisd(xmm0, temp); | 424 ucomisd(xmm0, temp); |
| 425 RecordComment("Deferred TaggedToI: lost precision"); | 425 RecordComment("Deferred TaggedToI: lost precision"); |
| 426 j(not_equal, lost_precision, Label::kNear); | 426 j(not_equal, lost_precision, Label::kNear); |
| 427 RecordComment("Deferred TaggedToI: NaN"); | 427 RecordComment("Deferred TaggedToI: NaN"); |
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| 1417 } | 1417 } |
| 1418 | 1418 |
| 1419 | 1419 |
| 1420 // Compute the hash code from the untagged key. This must be kept in sync with | 1420 // Compute the hash code from the untagged key. This must be kept in sync with |
| 1421 // ComputeIntegerHash in utils.h and KeyedLoadGenericElementStub in | 1421 // ComputeIntegerHash in utils.h and KeyedLoadGenericElementStub in |
| 1422 // code-stub-hydrogen.cc | 1422 // code-stub-hydrogen.cc |
| 1423 // | 1423 // |
| 1424 // Note: r0 will contain hash code | 1424 // Note: r0 will contain hash code |
| 1425 void MacroAssembler::GetNumberHash(Register r0, Register scratch) { | 1425 void MacroAssembler::GetNumberHash(Register r0, Register scratch) { |
| 1426 // Xor original key with a seed. | 1426 // Xor original key with a seed. |
| 1427 if (Serializer::enabled()) { | 1427 if (Serializer::enabled(isolate())) { |
| 1428 ExternalReference roots_array_start = | 1428 ExternalReference roots_array_start = |
| 1429 ExternalReference::roots_array_start(isolate()); | 1429 ExternalReference::roots_array_start(isolate()); |
| 1430 mov(scratch, Immediate(Heap::kHashSeedRootIndex)); | 1430 mov(scratch, Immediate(Heap::kHashSeedRootIndex)); |
| 1431 mov(scratch, | 1431 mov(scratch, |
| 1432 Operand::StaticArray(scratch, times_pointer_size, roots_array_start)); | 1432 Operand::StaticArray(scratch, times_pointer_size, roots_array_start)); |
| 1433 SmiUntag(scratch); | 1433 SmiUntag(scratch); |
| 1434 xor_(r0, scratch); | 1434 xor_(r0, scratch); |
| 1435 } else { | 1435 } else { |
| 1436 int32_t seed = isolate()->heap()->HashSeed(); | 1436 int32_t seed = isolate()->heap()->HashSeed(); |
| 1437 xor_(r0, Immediate(seed)); | 1437 xor_(r0, Immediate(seed)); |
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| 3646 if (ms.shift() > 0) sar(edx, ms.shift()); | 3646 if (ms.shift() > 0) sar(edx, ms.shift()); |
| 3647 mov(eax, dividend); | 3647 mov(eax, dividend); |
| 3648 shr(eax, 31); | 3648 shr(eax, 31); |
| 3649 add(edx, eax); | 3649 add(edx, eax); |
| 3650 } | 3650 } |
| 3651 | 3651 |
| 3652 | 3652 |
| 3653 } } // namespace v8::internal | 3653 } } // namespace v8::internal |
| 3654 | 3654 |
| 3655 #endif // V8_TARGET_ARCH_IA32 | 3655 #endif // V8_TARGET_ARCH_IA32 |
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