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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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3442 Register input_reg = ToRegister(instr->value()); | 3442 Register input_reg = ToRegister(instr->value()); |
3443 __ testl(input_reg, input_reg); | 3443 __ testl(input_reg, input_reg); |
3444 Label is_positive; | 3444 Label is_positive; |
3445 __ j(not_sign, &is_positive, Label::kNear); | 3445 __ j(not_sign, &is_positive, Label::kNear); |
3446 __ negl(input_reg); // Sets flags. | 3446 __ negl(input_reg); // Sets flags. |
3447 DeoptimizeIf(negative, instr->environment()); | 3447 DeoptimizeIf(negative, instr->environment()); |
3448 __ bind(&is_positive); | 3448 __ bind(&is_positive); |
3449 } | 3449 } |
3450 | 3450 |
3451 | 3451 |
3452 void LCodeGen::EmitInteger64MathAbs(LMathAbs* instr) { | 3452 void LCodeGen::EmitSmiMathAbs(LMathAbs* instr) { |
3453 Register input_reg = ToRegister(instr->value()); | 3453 Register input_reg = ToRegister(instr->value()); |
3454 __ testq(input_reg, input_reg); | 3454 __ testq(input_reg, input_reg); |
3455 Label is_positive; | 3455 Label is_positive; |
3456 __ j(not_sign, &is_positive, Label::kNear); | 3456 __ j(not_sign, &is_positive, Label::kNear); |
3457 __ neg(input_reg); // Sets flags. | 3457 __ neg(input_reg); // Sets flags. |
3458 DeoptimizeIf(negative, instr->environment()); | 3458 DeoptimizeIf(negative, instr->environment()); |
3459 __ bind(&is_positive); | 3459 __ bind(&is_positive); |
3460 } | 3460 } |
3461 | 3461 |
3462 | 3462 |
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3479 | 3479 |
3480 if (r.IsDouble()) { | 3480 if (r.IsDouble()) { |
3481 XMMRegister scratch = xmm0; | 3481 XMMRegister scratch = xmm0; |
3482 XMMRegister input_reg = ToDoubleRegister(instr->value()); | 3482 XMMRegister input_reg = ToDoubleRegister(instr->value()); |
3483 __ xorps(scratch, scratch); | 3483 __ xorps(scratch, scratch); |
3484 __ subsd(scratch, input_reg); | 3484 __ subsd(scratch, input_reg); |
3485 __ andpd(input_reg, scratch); | 3485 __ andpd(input_reg, scratch); |
3486 } else if (r.IsInteger32()) { | 3486 } else if (r.IsInteger32()) { |
3487 EmitIntegerMathAbs(instr); | 3487 EmitIntegerMathAbs(instr); |
3488 } else if (r.IsSmi()) { | 3488 } else if (r.IsSmi()) { |
3489 EmitInteger64MathAbs(instr); | 3489 EmitSmiMathAbs(instr); |
3490 } else { // Tagged case. | 3490 } else { // Tagged case. |
3491 DeferredMathAbsTaggedHeapNumber* deferred = | 3491 DeferredMathAbsTaggedHeapNumber* deferred = |
3492 new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); | 3492 new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
3493 Register input_reg = ToRegister(instr->value()); | 3493 Register input_reg = ToRegister(instr->value()); |
3494 // Smi check. | 3494 // Smi check. |
3495 __ JumpIfNotSmi(input_reg, deferred->entry()); | 3495 __ JumpIfNotSmi(input_reg, deferred->entry()); |
3496 __ SmiToInteger32(input_reg, input_reg); | 3496 EmitSmiMathAbs(instr); |
3497 EmitIntegerMathAbs(instr); | |
3498 __ Integer32ToSmi(input_reg, input_reg); | |
3499 __ bind(deferred->exit()); | 3497 __ bind(deferred->exit()); |
3500 } | 3498 } |
3501 } | 3499 } |
3502 | 3500 |
3503 | 3501 |
3504 void LCodeGen::DoMathFloor(LMathFloor* instr) { | 3502 void LCodeGen::DoMathFloor(LMathFloor* instr) { |
3505 XMMRegister xmm_scratch = xmm0; | 3503 XMMRegister xmm_scratch = xmm0; |
3506 Register output_reg = ToRegister(instr->result()); | 3504 Register output_reg = ToRegister(instr->result()); |
3507 XMMRegister input_reg = ToDoubleRegister(instr->value()); | 3505 XMMRegister input_reg = ToDoubleRegister(instr->value()); |
3508 | 3506 |
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5617 FixedArray::kHeaderSize - kPointerSize)); | 5615 FixedArray::kHeaderSize - kPointerSize)); |
5618 __ bind(&done); | 5616 __ bind(&done); |
5619 } | 5617 } |
5620 | 5618 |
5621 | 5619 |
5622 #undef __ | 5620 #undef __ |
5623 | 5621 |
5624 } } // namespace v8::internal | 5622 } } // namespace v8::internal |
5625 | 5623 |
5626 #endif // V8_TARGET_ARCH_X64 | 5624 #endif // V8_TARGET_ARCH_X64 |
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