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[ARM] Fix crash caused by r294945

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I'd missed a creator of FCMP nodes - duplicateCmp().

Kindly and promptly reported by Gabor Ballabas, due to his CSiBE test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294968 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Molloy 2017-02-13 17:18:00 +00:00
parent f32a3fd4af
commit eef9539b00
2 changed files with 15 additions and 2 deletions
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6
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -3812,10 +3812,12 @@ ARMTargetLowering::duplicateCmp(SDValue Cmp, SelectionDAG &DAG) const {
Cmp = Cmp.getOperand(0);
Opc = Cmp.getOpcode();
if (Opc == ARMISD::CMPFP)
Cmp = DAG.getNode(Opc, DL, MVT::Glue, Cmp.getOperand(0),Cmp.getOperand(1));
Cmp = DAG.getNode(Opc, DL, MVT::Glue, Cmp.getOperand(0),
Cmp.getOperand(1), Cmp.getOperand(2));
else {
assert(Opc == ARMISD::CMPFPw0 && "unexpected operand of FMSTAT");
Cmp = DAG.getNode(Opc, DL, MVT::Glue, Cmp.getOperand(0));
Cmp = DAG.getNode(Opc, DL, MVT::Glue, Cmp.getOperand(0),
Cmp.getOperand(1));
}
return DAG.getNode(ARMISD::FMSTAT, DL, MVT::Glue, Cmp);
}

11
test/CodeGen/ARM/vcmp-crash.ll Normal file
View File

@ -0,0 +1,11 @@
; RUN: llc -mcpu=cortex-m4 < %s | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7em-none--eabi"
; CHECK: vcmp.f32
define double @f(double %a, double %b, double %c, float %d) {
%1 = fcmp oeq float %d, 0.0
%2 = select i1 %1, double %a, double %c
ret double %2
}