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InstSimplify: Fold a hasNoSignedWrap() call into a match() expression

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No functionality change intended, it's just a little more concise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221281 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2014-11-04 17:47:13 +00:00
parent 57269b02a8
commit e756ecfb0c
1 changed files with 1 additions and 2 deletions
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3
lib/Analysis/InstructionSimplify.cpp
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@ -1408,8 +1408,7 @@ static Value *SimplifyAShrInst(Value *Op0, Value *Op1, bool isExact,
// (X << A) >> A -> X
Value *X;
if (match(Op0, m_Shl(m_Value(X), m_Specific(Op1))) &&
cast<OverflowingBinaryOperator>(Op0)->hasNoSignedWrap())
if (match(Op0, m_NSWShl(m_Value(X), m_Specific(Op1))))
return X;
// Arithmetic shifting an all-sign-bit value is a no-op.