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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-07-11 16:05:50 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-07-11 16:05:50 +0000 |
| commit | 0a230e0d985625a3909cb78fd867a3abaf434565 (patch) | |
| tree | 5781d89cdddab939dca31f5f5a62c2a1f825b22f /lib/Transforms/InstCombine | |
| parent | 1b3e3eef1fb51ace32b32e5ca217dacb03333b13 (diff) | |
| download | llvm-0a230e0d985625a3909cb78fd867a3abaf434565.tar.gz llvm-0a230e0d985625a3909cb78fd867a3abaf434565.tar.bz2 llvm-0a230e0d985625a3909cb78fd867a3abaf434565.tar.xz | |
Don't use a potentially expensive shift if all we want is one set bit.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186095 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/InstCombine')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineAddSub.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/lib/Transforms/InstCombine/InstCombineAddSub.cpp index ac7eac94c9..03fd35fb81 100644 --- a/lib/Transforms/InstCombine/InstCombineAddSub.cpp +++ b/lib/Transforms/InstCombine/InstCombineAddSub.cpp @@ -876,7 +876,7 @@ static inline Value *dyn_castFoldableMul(Value *V, ConstantInt *&CST) { uint32_t BitWidth = cast<IntegerType>(V->getType())->getBitWidth(); uint32_t CSTVal = CST->getLimitedValue(BitWidth); CST = ConstantInt::get(V->getType()->getContext(), - APInt(BitWidth, 1).shl(CSTVal)); + APInt::getOneBitSet(BitWidth, CSTVal)); return I->getOperand(0); } return 0; |