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| author | Craig Topper <craig.topper@gmail.com> | 2017-04-20 16:56:25 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-04-20 16:56:25 +0000 |
| commit | bcfd2d1789e6709dfd585521ac599ae49091a6e8 (patch) | |
| tree | 1b6909c06a2be947e3583c44ba16be0d8e5ee75f /llvm/lib/Analysis/InstructionSimplify.cpp | |
| parent | 20f2b01222a1e56b360a80d78a371fa063abfdbf (diff) | |
| download | bcm5719-llvm-bcfd2d1789e6709dfd585521ac599ae49091a6e8.tar.gz bcm5719-llvm-bcfd2d1789e6709dfd585521ac599ae49091a6e8.zip | |
[APInt] Rename getSignBit to getSignMask
getSignBit is a static function that creates an APInt with only the sign bit set. getSignMask seems like a better name to convey its functionality. In fact several places use it and then store in an APInt named SignMask.
Differential Revision: https://reviews.llvm.org/D32108
llvm-svn: 300856
Diffstat (limited to 'llvm/lib/Analysis/InstructionSimplify.cpp')
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index bca3435863e..2259fbaeb98 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -568,11 +568,11 @@ static Value *SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW, match(Op1, m_Not(m_Specific(Op0)))) return Constant::getAllOnesValue(Ty); - // add nsw/nuw (xor Y, signbit), signbit --> Y + // add nsw/nuw (xor Y, signmask), signmask --> Y // The no-wrapping add guarantees that the top bit will be set by the add. // Therefore, the xor must be clearing the already set sign bit of Y. - if ((isNSW || isNUW) && match(Op1, m_SignBit()) && - match(Op0, m_Xor(m_Value(Y), m_SignBit()))) + if ((isNSW || isNUW) && match(Op1, m_SignMask()) && + match(Op0, m_Xor(m_Value(Y), m_SignMask()))) return Y; /// i1 add -> xor. @@ -2819,7 +2819,7 @@ static Value *simplifyICmpWithBinOp(CmpInst::Predicate Pred, Value *LHS, return ConstantInt::getTrue(RHS->getContext()); } } - if (CIVal->isSignBit() && *CI2Val == 1) { + if (CIVal->isSignMask() && *CI2Val == 1) { if (Pred == ICmpInst::ICMP_UGT) return ConstantInt::getFalse(RHS->getContext()); if (Pred == ICmpInst::ICMP_ULE) |
