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PR13046: we can't replace usage of SUB with CMP in the lowering phase.

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It will cause assertion failure later on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158160 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manman Ren 2012-06-07 19:27:33 +00:00
parent c07f5bbd3b
commit e6fc9d40b3
1 changed files with 2 additions and 1 deletions
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3
lib/Target/X86/X86ISelLowering.cpp
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@ -8306,7 +8306,8 @@ SDValue X86TargetLowering::EmitTest(SDValue Op, unsigned X86CC,
if (Opcode == X86ISD::CMP) {
SDValue New = DAG.getNode(Opcode, dl, MVT::i32, Op.getOperand(0),
Op.getOperand(1));
DAG.ReplaceAllUsesWith(Op, New);
// We can't replace usage of SUB with CMP.
// The SUB node will be removed later because there is no use of it.
return SDValue(New.getNode(), 0);
}