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| author | Craig Topper <craig.topper@gmail.com> | 2017-03-30 22:21:16 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-03-30 22:21:16 +0000 |
| commit | 3a40a397c32ba2b7a2a12d065f4a9db7bdca15e0 (patch) | |
| tree | 26008ca2a1f7023a5e4ec4dd2a487c3c704ec9aa /llvm/lib | |
| parent | 6856d341a82153ba1933ddcbb786130cf3fa3a12 (diff) | |
| download | bcm5719-llvm-3a40a397c32ba2b7a2a12d065f4a9db7bdca15e0.tar.gz bcm5719-llvm-3a40a397c32ba2b7a2a12d065f4a9db7bdca15e0.zip | |
[InstSimplify] Use m_SignBit instead of calling getSignBit and using m_Specific. NFCI
llvm-svn: 299121
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index dace55a1c09..29c0d0afe31 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -565,10 +565,8 @@ static Value *SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW, // add nsw/nuw (xor Y, signbit), signbit --> 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. - Constant *SignBit = - ConstantInt::get(Ty, APInt::getSignBit(Ty->getScalarSizeInBits())); - if ((isNSW || isNUW) && match(Op1, m_Specific(SignBit)) && - match(Op0, m_Xor(m_Value(Y), m_Specific(SignBit)))) + if ((isNSW || isNUW) && match(Op1, m_SignBit()) && + match(Op0, m_Xor(m_Value(Y), m_SignBit()))) return Y; /// i1 add -> xor. |
