diff options
Diffstat (limited to 'deps/v8/src/ia32/codegen-ia32.cc')
-rw-r--r-- | deps/v8/src/ia32/codegen-ia32.cc | 109 |
1 files changed, 7 insertions, 102 deletions
diff --git a/deps/v8/src/ia32/codegen-ia32.cc b/deps/v8/src/ia32/codegen-ia32.cc index 2190531b43..18e53641e6 100644 --- a/deps/v8/src/ia32/codegen-ia32.cc +++ b/deps/v8/src/ia32/codegen-ia32.cc @@ -34,43 +34,6 @@ void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const { #define __ masm. -UnaryMathFunctionWithIsolate CreateExpFunction(Isolate* isolate) { - size_t actual_size; - byte* buffer = - static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); - if (buffer == nullptr) return nullptr; - ExternalReference::InitializeMathExpData(); - - MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size), - CodeObjectRequired::kNo); - // esp[1 * kPointerSize]: raw double input - // esp[0 * kPointerSize]: return address - { - XMMRegister input = xmm1; - XMMRegister result = xmm2; - __ movsd(input, Operand(esp, 1 * kPointerSize)); - __ push(eax); - __ push(ebx); - - MathExpGenerator::EmitMathExp(&masm, input, result, xmm0, eax, ebx); - - __ pop(ebx); - __ pop(eax); - __ movsd(Operand(esp, 1 * kPointerSize), result); - __ fld_d(Operand(esp, 1 * kPointerSize)); - __ Ret(); - } - - CodeDesc desc; - masm.GetCode(&desc); - DCHECK(!RelocInfo::RequiresRelocation(desc)); - - Assembler::FlushICache(isolate, buffer, actual_size); - base::OS::ProtectCode(buffer, actual_size); - return FUNCTION_CAST<UnaryMathFunctionWithIsolate>(buffer); -} - - UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) { size_t actual_size; // Allocate buffer in executable space. @@ -580,14 +543,14 @@ void ElementsTransitionGenerator::GenerateSmiToDouble( __ push(eax); __ push(ebx); + __ push(esi); __ mov(edi, FieldOperand(edi, FixedArray::kLengthOffset)); // Allocate new FixedDoubleArray. // edx: receiver // edi: length of source FixedArray (smi-tagged) - AllocationFlags flags = - static_cast<AllocationFlags>(TAG_OBJECT | DOUBLE_ALIGNMENT); + AllocationFlags flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT); __ Allocate(FixedDoubleArray::kHeaderSize, times_8, edi, REGISTER_VALUE_IS_SMI, eax, ebx, no_reg, &gc_required, flags); @@ -621,8 +584,9 @@ void ElementsTransitionGenerator::GenerateSmiToDouble( // Call into runtime if GC is required. __ bind(&gc_required); + // Restore registers before jumping into runtime. - __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); + __ pop(esi); __ pop(ebx); __ pop(eax); __ jmp(fail); @@ -657,12 +621,11 @@ void ElementsTransitionGenerator::GenerateSmiToDouble( __ sub(edi, Immediate(Smi::FromInt(1))); __ j(not_sign, &loop); + // Restore registers. + __ pop(esi); __ pop(ebx); __ pop(eax); - // Restore esi. - __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); - __ bind(&only_change_map); // eax: value // ebx: target map @@ -714,7 +677,7 @@ void ElementsTransitionGenerator::GenerateDoubleToObject( // Allocate new FixedArray. // ebx: length of source FixedDoubleArray (smi-tagged) __ lea(edi, Operand(ebx, times_2, FixedArray::kHeaderSize)); - __ Allocate(edi, eax, esi, no_reg, &gc_required, TAG_OBJECT); + __ Allocate(edi, eax, esi, no_reg, &gc_required, NO_ALLOCATION_FLAGS); // eax: destination FixedArray // ebx: number of elements @@ -928,64 +891,6 @@ void StringCharLoadGenerator::Generate(MacroAssembler* masm, __ bind(&done); } - -static Operand ExpConstant(int index) { - return Operand::StaticVariable(ExternalReference::math_exp_constants(index)); -} - - -void MathExpGenerator::EmitMathExp(MacroAssembler* masm, - XMMRegister input, - XMMRegister result, - XMMRegister double_scratch, - Register temp1, - Register temp2) { - DCHECK(!input.is(double_scratch)); - DCHECK(!input.is(result)); - DCHECK(!result.is(double_scratch)); - DCHECK(!temp1.is(temp2)); - DCHECK(ExternalReference::math_exp_constants(0).address() != NULL); - DCHECK(!masm->serializer_enabled()); // External references not serializable. - - Label done; - - __ movsd(double_scratch, ExpConstant(0)); - __ xorpd(result, result); - __ ucomisd(double_scratch, input); - __ j(above_equal, &done); - __ ucomisd(input, ExpConstant(1)); - __ movsd(result, ExpConstant(2)); - __ j(above_equal, &done); - __ movsd(double_scratch, ExpConstant(3)); - __ movsd(result, ExpConstant(4)); - __ mulsd(double_scratch, input); - __ addsd(double_scratch, result); - __ movd(temp2, double_scratch); - __ subsd(double_scratch, result); - __ movsd(result, ExpConstant(6)); - __ mulsd(double_scratch, ExpConstant(5)); - __ subsd(double_scratch, input); - __ subsd(result, double_scratch); - __ movsd(input, double_scratch); - __ mulsd(input, double_scratch); - __ mulsd(result, input); - __ mov(temp1, temp2); - __ mulsd(result, ExpConstant(7)); - __ subsd(result, double_scratch); - __ add(temp1, Immediate(0x1ff800)); - __ addsd(result, ExpConstant(8)); - __ and_(temp2, Immediate(0x7ff)); - __ shr(temp1, 11); - __ shl(temp1, 20); - __ movd(input, temp1); - __ pshufd(input, input, static_cast<uint8_t>(0xe1)); // Order: 11 10 00 01 - __ movsd(double_scratch, Operand::StaticArray( - temp2, times_8, ExternalReference::math_exp_log_table())); - __ orps(input, double_scratch); - __ mulsd(result, input); - __ bind(&done); -} - #undef __ |