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Issue 18712002: Convert UnaryOpStub to a HydrogenCodeStub (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: address review Created 7 years, 5 months ago
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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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1827 int LCodeGen::GetNextEmittedBlock() const { 1827 int LCodeGen::GetNextEmittedBlock() const {
1828 for (int i = current_block_ + 1; i < graph()->blocks()->length(); ++i) { 1828 for (int i = current_block_ + 1; i < graph()->blocks()->length(); ++i) {
1829 if (!chunk_->GetLabel(i)->HasReplacement()) return i; 1829 if (!chunk_->GetLabel(i)->HasReplacement()) return i;
1830 } 1830 }
1831 return -1; 1831 return -1;
1832 } 1832 }
1833 1833
1834 1834
1835 template<class InstrType> 1835 template<class InstrType>
1836 void LCodeGen::EmitBranch(InstrType instr, Condition cc) { 1836 void LCodeGen::EmitBranch(InstrType instr, Condition cc) {
1837 int left_block = instr->TrueDestination(chunk_);
1837 int right_block = instr->FalseDestination(chunk_); 1838 int right_block = instr->FalseDestination(chunk_);
1838 int left_block = instr->TrueDestination(chunk_);
1839 1839
1840 int next_block = GetNextEmittedBlock(); 1840 int next_block = GetNextEmittedBlock();
1841 1841
1842 if (right_block == left_block) { 1842 if (right_block == left_block || cc == no_condition) {
1843 EmitGoto(left_block); 1843 EmitGoto(left_block);
1844 } else if (left_block == next_block) { 1844 } else if (left_block == next_block) {
1845 __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); 1845 __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block));
1846 } else if (right_block == next_block) { 1846 } else if (right_block == next_block) {
1847 __ j(cc, chunk_->GetAssemblyLabel(left_block)); 1847 __ j(cc, chunk_->GetAssemblyLabel(left_block));
1848 } else { 1848 } else {
1849 __ j(cc, chunk_->GetAssemblyLabel(left_block)); 1849 __ j(cc, chunk_->GetAssemblyLabel(left_block));
1850 if (cc != always) { 1850 if (cc != always) {
1851 __ jmp(chunk_->GetAssemblyLabel(right_block)); 1851 __ jmp(chunk_->GetAssemblyLabel(right_block));
1852 } 1852 }
1853 } 1853 }
1854 } 1854 }
1855 1855
1856 1856
1857 void LCodeGen::DoDebugBreak(LDebugBreak* instr) { 1857 void LCodeGen::DoDebugBreak(LDebugBreak* instr) {
1858 __ int3(); 1858 __ int3();
1859 } 1859 }
1860 1860
1861 1861
1862 void LCodeGen::DoIsNumberAndBranch(LIsNumberAndBranch* instr) {
1863 Representation r = instr->hydrogen()->value()->representation();
1864 if (r.IsSmiOrInteger32() || r.IsDouble()) {
1865 EmitBranch(instr, no_condition);
1866 } else {
1867 ASSERT(r.IsTagged());
1868 Register reg = ToRegister(instr->value());
1869 HType type = instr->hydrogen()->value()->type();
1870 if (type.IsTaggedNumber()) {
1871 EmitBranch(instr, no_condition);
1872 }
1873 __ JumpIfSmi(reg, instr->TrueLabel(chunk_));
1874 __ CompareRoot(FieldOperand(reg, HeapObject::kMapOffset),
1875 Heap::kHeapNumberMapRootIndex);
1876 EmitBranch(instr, equal);
1877 }
1878 }
1879
1880
1862 void LCodeGen::DoBranch(LBranch* instr) { 1881 void LCodeGen::DoBranch(LBranch* instr) {
1863 Representation r = instr->hydrogen()->value()->representation(); 1882 Representation r = instr->hydrogen()->value()->representation();
1864 if (r.IsInteger32()) { 1883 if (r.IsInteger32()) {
1865 ASSERT(!info()->IsStub()); 1884 ASSERT(!info()->IsStub());
1866 Register reg = ToRegister(instr->value()); 1885 Register reg = ToRegister(instr->value());
1867 __ testl(reg, reg); 1886 __ testl(reg, reg);
1868 EmitBranch(instr, not_zero); 1887 EmitBranch(instr, not_zero);
1869 } else if (r.IsSmi()) { 1888 } else if (r.IsSmi()) {
1870 ASSERT(!info()->IsStub()); 1889 ASSERT(!info()->IsStub());
1871 Register reg = ToRegister(instr->value()); 1890 Register reg = ToRegister(instr->value());
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5646 FixedArray::kHeaderSize - kPointerSize)); 5665 FixedArray::kHeaderSize - kPointerSize));
5647 __ bind(&done); 5666 __ bind(&done);
5648 } 5667 }
5649 5668
5650 5669
5651 #undef __ 5670 #undef __
5652 5671
5653 } } // namespace v8::internal 5672 } } // namespace v8::internal
5654 5673
5655 #endif // V8_TARGET_ARCH_X64 5674 #endif // V8_TARGET_ARCH_X64
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