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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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| 1672 } | 1672 } |
| 1673 | 1673 |
| 1674 if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { | 1674 if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1675 // heap number -> false iff +0, -0, or NaN. | 1675 // heap number -> false iff +0, -0, or NaN. |
| 1676 DoubleRegister dbl_scratch = double_scratch0(); | 1676 DoubleRegister dbl_scratch = double_scratch0(); |
| 1677 Label not_heap_number; | 1677 Label not_heap_number; |
| 1678 __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); | 1678 __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); |
| 1679 __ b(ne, ¬_heap_number); | 1679 __ b(ne, ¬_heap_number); |
| 1680 __ vldr(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); | 1680 __ vldr(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); |
| 1681 __ VFPCompareAndSetFlags(dbl_scratch, 0.0); | 1681 __ VFPCompareAndSetFlags(dbl_scratch, 0.0); |
| 1682 __ b(vs, false_label); // NaN -> false. | 1682 __ b(vs, false_label); // NaN -> false. |
| 1683 __ b(eq, false_label); // +0, -0 -> false. | 1683 __ b(eq, false_label); // +0, -0 -> false. |
| 1684 __ b(true_label); | 1684 __ b(true_label); |
| 1685 __ bind(¬_heap_number); | 1685 __ bind(¬_heap_number); |
| 1686 } else if (expected.Contains(ToBooleanStub::INTERNAL_OBJECT)) { | 1686 } else if (expected.Contains(ToBooleanStub::INTERNAL_OBJECT)) { |
| 1687 // We've seen a heap number for the first time -> deopt. | 1687 // We've seen a heap number for the first time -> deopt. |
| 1688 __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); | 1688 __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); |
| 1689 DeoptimizeIf(eq, instr->environment()); | 1689 DeoptimizeIf(eq, instr->environment()); |
| 1690 } | 1690 } |
| 1691 | 1691 |
| 1692 if (expected.Contains(ToBooleanStub::INTERNAL_OBJECT)) { | 1692 if (expected.Contains(ToBooleanStub::INTERNAL_OBJECT)) { |
| 1693 // internal objects -> true | 1693 // internal objects -> true |
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| 4571 ASSERT(osr_pc_offset_ == -1); | 4571 ASSERT(osr_pc_offset_ == -1); |
| 4572 osr_pc_offset_ = masm()->pc_offset(); | 4572 osr_pc_offset_ = masm()->pc_offset(); |
| 4573 } | 4573 } |
| 4574 | 4574 |
| 4575 | 4575 |
| 4576 | 4576 |
| 4577 | 4577 |
| 4578 #undef __ | 4578 #undef __ |
| 4579 | 4579 |
| 4580 } } // namespace v8::internal | 4580 } } // namespace v8::internal |
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