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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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3178 if (array_type == kExternalFloatArray) { | 3178 if (array_type == kExternalFloatArray) { |
3179 XMMRegister value(ToDoubleRegister(instr->value())); | 3179 XMMRegister value(ToDoubleRegister(instr->value())); |
3180 __ cvtsd2ss(value, value); | 3180 __ cvtsd2ss(value, value); |
3181 __ movss(operand, value); | 3181 __ movss(operand, value); |
3182 } else if (array_type == kExternalDoubleArray) { | 3182 } else if (array_type == kExternalDoubleArray) { |
3183 __ movsd(operand, ToDoubleRegister(instr->value())); | 3183 __ movsd(operand, ToDoubleRegister(instr->value())); |
3184 } else { | 3184 } else { |
3185 Register value(ToRegister(instr->value())); | 3185 Register value(ToRegister(instr->value())); |
3186 switch (array_type) { | 3186 switch (array_type) { |
3187 case kExternalPixelArray: | 3187 case kExternalPixelArray: |
3188 { // Clamp the value to [0..255]. | |
3189 Label done; | |
3190 __ testl(value, Immediate(0xFFFFFF00)); | |
3191 __ j(zero, &done, Label::kNear); | |
3192 __ setcc(negative, value); // 1 if negative, 0 if positive. | |
3193 __ decb(value); // 0 if negative, 255 if positive. | |
3194 __ bind(&done); | |
3195 __ movb(operand, value); | |
3196 } | |
3197 break; | |
3198 case kExternalByteArray: | 3188 case kExternalByteArray: |
3199 case kExternalUnsignedByteArray: | 3189 case kExternalUnsignedByteArray: |
3200 __ movb(operand, value); | 3190 __ movb(operand, value); |
3201 break; | 3191 break; |
3202 case kExternalShortArray: | 3192 case kExternalShortArray: |
3203 case kExternalUnsignedShortArray: | 3193 case kExternalUnsignedShortArray: |
3204 __ movw(operand, value); | 3194 __ movw(operand, value); |
3205 break; | 3195 break; |
3206 case kExternalIntArray: | 3196 case kExternalIntArray: |
3207 case kExternalUnsignedIntArray: | 3197 case kExternalUnsignedIntArray: |
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3778 void LCodeGen::DoCheckMap(LCheckMap* instr) { | 3768 void LCodeGen::DoCheckMap(LCheckMap* instr) { |
3779 LOperand* input = instr->InputAt(0); | 3769 LOperand* input = instr->InputAt(0); |
3780 ASSERT(input->IsRegister()); | 3770 ASSERT(input->IsRegister()); |
3781 Register reg = ToRegister(input); | 3771 Register reg = ToRegister(input); |
3782 __ Cmp(FieldOperand(reg, HeapObject::kMapOffset), | 3772 __ Cmp(FieldOperand(reg, HeapObject::kMapOffset), |
3783 instr->hydrogen()->map()); | 3773 instr->hydrogen()->map()); |
3784 DeoptimizeIf(not_equal, instr->environment()); | 3774 DeoptimizeIf(not_equal, instr->environment()); |
3785 } | 3775 } |
3786 | 3776 |
3787 | 3777 |
| 3778 void LCodeGen::DoClampDoubleToUint8(LClampDoubleToUint8* instr) { |
| 3779 XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 3780 Register result_reg = ToRegister(instr->result()); |
| 3781 Register temp_reg = ToRegister(instr->TempAt(0)); |
| 3782 __ ClampDoubleToUint8(value_reg, xmm0, result_reg, temp_reg); |
| 3783 } |
| 3784 |
| 3785 |
| 3786 void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 3787 ASSERT(instr->unclamped()->Equals(instr->result())); |
| 3788 Register value_reg = ToRegister(instr->result()); |
| 3789 __ ClampUint8(value_reg); |
| 3790 } |
| 3791 |
| 3792 |
| 3793 void LCodeGen::DoClampTaggedToUint8(LClampTaggedToUint8* instr) { |
| 3794 ASSERT(instr->unclamped()->Equals(instr->result())); |
| 3795 Register input_reg = ToRegister(instr->unclamped()); |
| 3796 Register temp_reg = ToRegister(instr->TempAt(0)); |
| 3797 XMMRegister temp_xmm_reg = ToDoubleRegister(instr->TempAt(1)); |
| 3798 Label is_smi, done, heap_number; |
| 3799 |
| 3800 __ JumpIfSmi(input_reg, &is_smi); |
| 3801 |
| 3802 // Check for heap number |
| 3803 __ Cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 3804 factory()->heap_number_map()); |
| 3805 __ j(equal, &heap_number, Label::kNear); |
| 3806 |
| 3807 // Check for undefined. Undefined is converted to zero for clamping |
| 3808 // conversions. |
| 3809 __ Cmp(input_reg, factory()->undefined_value()); |
| 3810 DeoptimizeIf(not_equal, instr->environment()); |
| 3811 __ movq(input_reg, Immediate(0)); |
| 3812 __ jmp(&done, Label::kNear); |
| 3813 |
| 3814 // Heap number |
| 3815 __ bind(&heap_number); |
| 3816 __ movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3817 __ ClampDoubleToUint8(xmm0, temp_xmm_reg, input_reg, temp_reg); |
| 3818 __ jmp(&done, Label::kNear); |
| 3819 |
| 3820 // smi |
| 3821 __ bind(&is_smi); |
| 3822 __ SmiToInteger32(input_reg, input_reg); |
| 3823 __ ClampUint8(input_reg); |
| 3824 |
| 3825 __ bind(&done); |
| 3826 } |
| 3827 |
| 3828 |
3788 void LCodeGen::LoadHeapObject(Register result, Handle<HeapObject> object) { | 3829 void LCodeGen::LoadHeapObject(Register result, Handle<HeapObject> object) { |
3789 if (heap()->InNewSpace(*object)) { | 3830 if (heap()->InNewSpace(*object)) { |
3790 Handle<JSGlobalPropertyCell> cell = | 3831 Handle<JSGlobalPropertyCell> cell = |
3791 factory()->NewJSGlobalPropertyCell(object); | 3832 factory()->NewJSGlobalPropertyCell(object); |
3792 __ movq(result, cell, RelocInfo::GLOBAL_PROPERTY_CELL); | 3833 __ movq(result, cell, RelocInfo::GLOBAL_PROPERTY_CELL); |
3793 __ movq(result, Operand(result, 0)); | 3834 __ movq(result, Operand(result, 0)); |
3794 } else { | 3835 } else { |
3795 __ Move(result, object); | 3836 __ Move(result, object); |
3796 } | 3837 } |
3797 } | 3838 } |
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4195 RegisterEnvironmentForDeoptimization(environment); | 4236 RegisterEnvironmentForDeoptimization(environment); |
4196 ASSERT(osr_pc_offset_ == -1); | 4237 ASSERT(osr_pc_offset_ == -1); |
4197 osr_pc_offset_ = masm()->pc_offset(); | 4238 osr_pc_offset_ = masm()->pc_offset(); |
4198 } | 4239 } |
4199 | 4240 |
4200 #undef __ | 4241 #undef __ |
4201 | 4242 |
4202 } } // namespace v8::internal | 4243 } } // namespace v8::internal |
4203 | 4244 |
4204 #endif // V8_TARGET_ARCH_X64 | 4245 #endif // V8_TARGET_ARCH_X64 |
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