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[mips][msa/dsp] Only do DSP combines if DSP is enabled.

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Fixes a crash (null pointer dereferenced) when MSA is enabled.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195343 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
2013-11-21 11:40:14 +00:00
parent ae89383daa
commit 001a93bbcb
2 changed files with 144 additions and 0 deletions
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3
lib/Target/Mips/MipsSEISelLowering.cpp
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@@ -751,6 +751,9 @@ static SDValue performDSPShiftCombine(unsigned Opc, SDNode *N, EVT Ty,
unsigned EltSize = Ty.getVectorElementType().getSizeInBits();
BuildVectorSDNode *BV = dyn_cast<BuildVectorSDNode>(N->getOperand(1));
if (!Subtarget->hasDSP())
return SDValue();
if (!BV ||
!BV->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
EltSize, !Subtarget->isLittle()) ||