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[atomics] Fix I64AtomicStore/I64AtomicExchange for ia32

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Change-Id: I54b34635842e62f08ff06c68b965f2e38155bad8
Bug: v8:8202
Reviewed-on: https://chromium-review.googlesource.com/c/1282932
Reviewed-by: Stephan Herhut <herhut@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56725}
This commit is contained in:
Deepti Gandluri 2018-10-16 08:04:50 -07:00 committed by Commit Bot
parent 132d2672c5
commit 6cde186b21
1 changed files with 6 additions and 0 deletions
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6
src/compiler/ia32/code-generator-ia32.cc
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@ -3678,6 +3678,8 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
break;
}
case kIA32Word32AtomicPairStore: {
Label store;
__ bind(&store);
TurboAssembler::AllowExplicitEbxAccessScope spill_register(tasm());
__ mov(i.TempRegister(0), i.MemoryOperand(2));
__ mov(i.TempRegister(1), i.NextMemoryOperand(2));
@ -3688,6 +3690,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
__ cmpxchg8b(i.MemoryOperand(2));
__ pop(ebx);
frame_access_state()->IncreaseSPDelta(-1);
__ j(not_equal, &store);
break;
}
case kWord32AtomicExchangeInt8: {
@ -3716,6 +3719,8 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
}
case kIA32Word32AtomicPairExchange: {
DCHECK(VerifyOutputOfAtomicPairInstr(&i, instr));
Label exchange;
__ bind(&exchange);
TurboAssembler::AllowExplicitEbxAccessScope spill_ebx(tasm());
__ mov(eax, i.MemoryOperand(2));
__ mov(edx, i.NextMemoryOperand(2));
@ -3726,6 +3731,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
__ cmpxchg8b(i.MemoryOperand(2));
__ pop(ebx);
frame_access_state()->IncreaseSPDelta(-1);
__ j(not_equal, &exchange);
break;
}
case kWord32AtomicCompareExchangeInt8: {