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| author | David Majnemer <david.majnemer@gmail.com> | 2014-12-20 04:45:33 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2014-12-20 04:45:33 +0000 |
| commit | 147f8586bebf86f6354a7d0c9c9a47c5b76798c7 (patch) | |
| tree | 0090021b3b825c7d2e44fe7078048f1fdc89cb6c /llvm/lib | |
| parent | e75e0b409539b7cde91f713955aa1af53277bda6 (diff) | |
| download | bcm5719-llvm-147f8586bebf86f6354a7d0c9c9a47c5b76798c7.tar.gz bcm5719-llvm-147f8586bebf86f6354a7d0c9c9a47c5b76798c7.zip | |
InstSimplify: Don't bother if getScalarSizeInBits returns zero
getScalarSizeInBits returns zero when the comparison operands are not
integral. No functionality change intended.
llvm-svn: 224675
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index 7d8b668be03..56e7a094976 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -3152,14 +3152,15 @@ static Value *SimplifySelectInst(Value *CondVal, Value *TrueVal, if (isa<UndefValue>(FalseVal)) // select C, X, undef -> X return TrueVal; - if (const auto *ICI = dyn_cast<ICmpInst>(CondVal)) { + const auto *ICI = dyn_cast<ICmpInst>(CondVal); + unsigned BitWidth = TrueVal->getType()->getScalarSizeInBits(); + if (ICI && BitWidth) { ICmpInst::Predicate Pred = ICI->getPredicate(); - APInt MinSignedValue = - APInt::getSignBit(TrueVal->getType()->getScalarSizeInBits()); + APInt MinSignedValue = APInt::getSignBit(BitWidth); Value *X; const APInt *Y; - bool IsBitTest = false; bool TrueWhenUnset; + bool IsBitTest = false; if (ICmpInst::isEquality(Pred) && match(ICI->getOperand(0), m_And(m_Value(X), m_APInt(Y))) && match(ICI->getOperand(1), m_Zero())) { |
