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[SystemZ] Properly check number of operands in getCmpOpsType() 

It is needed to check that the number of operands are 2 when
finding the case of a logic combination, e.g. 'and' of two compares.

Review: Ulrich Weigand
llvm-svn: 302022
This commit is contained in:
Jonas Paulsson 2017-05-03 13:33:45 +00:00
parent 88619946b6
commit f40eac5088
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
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@ -530,9 +530,10 @@ static Type *getCmpOpsType(const Instruction *I, unsigned VF = 1) {
if (CmpInst *CI = dyn_cast<CmpInst>(I->getOperand(0)))
OpTy = CI->getOperand(0)->getType();
else if (Instruction *LogicI = dyn_cast<Instruction>(I->getOperand(0)))
if (CmpInst *CI0 = dyn_cast<CmpInst>(LogicI->getOperand(0)))
if (isa<CmpInst>(LogicI->getOperand(1)))
OpTy = CI0->getOperand(0)->getType();
if (LogicI->getNumOperands() == 2)
if (CmpInst *CI0 = dyn_cast<CmpInst>(LogicI->getOperand(0)))
if (isa<CmpInst>(LogicI->getOperand(1)))
OpTy = CI0->getOperand(0)->getType();
if (OpTy != nullptr) {
if (VF == 1) {