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fix PR8981, a crash trying to form a conditional inc with a floating point compare.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123560 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2011-01-16 02:56:53 +00:00
parent b99fdee325
commit 9cd3da47f9
2 changed files with 12 additions and 1 deletions
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3
lib/Target/X86/X86ISelLowering.cpp
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@ -11560,7 +11560,8 @@ static SDValue OptimizeConditonalInDecrement(SDNode *N, SelectionDAG &DAG) {
SDValue Cmp = SetCC.getOperand(1);
if (Cmp.getOpcode() != X86ISD::CMP || !Cmp.hasOneUse() ||
!X86::isZeroNode(Cmp.getOperand(1)))
!X86::isZeroNode(Cmp.getOperand(1)) ||
!Cmp.getOperand(0).getValueType().isInteger())
return SDValue();
SDValue CmpOp0 = Cmp.getOperand(0);

10
test/CodeGen/X86/crash.ll
View File

@ -141,3 +141,13 @@ entry:
call void asm sideeffect "outb $0, ${1:w}", "{ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i8 %conv4.i, i32 1017) nounwind
unreachable
}
; Crash trying to form conditional increment with fp value.
; PR8981
define i32 @test9(double %X) ssp align 2 {
entry:
%0 = fcmp one double %X, 0.000000e+00
%cond = select i1 %0, i32 1, i32 2
ret i32 %cond
}