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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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2623 | 2623 |
2624 if (divisor == 0) { | 2624 if (divisor == 0) { |
2625 Deoptimize(instr->environment()); | 2625 Deoptimize(instr->environment()); |
2626 return; | 2626 return; |
2627 } | 2627 } |
2628 | 2628 |
2629 // Check for (0 / -x) that will produce negative zero. | 2629 // Check for (0 / -x) that will produce negative zero. |
2630 HDiv* hdiv = instr->hydrogen(); | 2630 HDiv* hdiv = instr->hydrogen(); |
2631 if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero) && | 2631 if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero) && |
2632 hdiv->left()->RangeCanInclude(0) && divisor < 0) { | 2632 hdiv->left()->RangeCanInclude(0) && divisor < 0) { |
2633 __ Cmp(dividend, 0); | 2633 DeoptimizeIfZero(dividend, instr->environment()); |
2634 DeoptimizeIf(eq, instr->environment()); | |
2635 } | 2634 } |
2636 | 2635 |
2637 __ FlooringDiv(result, dividend, Abs(divisor)); | 2636 __ FlooringDiv(result, dividend, Abs(divisor)); |
2638 if (divisor < 0) __ Neg(result, result); | 2637 if (divisor < 0) __ Neg(result, result); |
2639 | 2638 |
2640 if (!hdiv->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { | 2639 if (!hdiv->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
2641 Register temp = ToRegister32(instr->temp()); | 2640 Register temp = ToRegister32(instr->temp()); |
2642 ASSERT(!AreAliased(dividend, result, temp)); | 2641 ASSERT(!AreAliased(dividend, result, temp)); |
2643 __ Sxtw(dividend.X(), dividend); | 2642 __ Sxtw(dividend.X(), dividend); |
2644 __ Mov(temp, divisor); | 2643 __ Mov(temp, divisor); |
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5802 __ Bind(&out_of_object); | 5801 __ Bind(&out_of_object); |
5803 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); | 5802 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
5804 // Index is equal to negated out of object property index plus 1. | 5803 // Index is equal to negated out of object property index plus 1. |
5805 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); | 5804 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); |
5806 __ Ldr(result, FieldMemOperand(result, | 5805 __ Ldr(result, FieldMemOperand(result, |
5807 FixedArray::kHeaderSize - kPointerSize)); | 5806 FixedArray::kHeaderSize - kPointerSize)); |
5808 __ Bind(&done); | 5807 __ Bind(&done); |
5809 } | 5808 } |
5810 | 5809 |
5811 } } // namespace v8::internal | 5810 } } // namespace v8::internal |
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