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| author | Chris Lattner <sabre@nondot.org> | 2012-03-26 19:13:57 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2012-03-26 19:13:57 +0000 |
| commit | de813b7108de64829ab006e6b998a7b38d119ecc (patch) | |
| tree | 1d4cd497878f4aa19e998c8e9c3002440c3aa020 | |
| parent | ef18cd381cb8513a53baba2b0062159323b13056 (diff) | |
| download | external_llvm-de813b7108de64829ab006e6b998a7b38d119ecc.zip external_llvm-de813b7108de64829ab006e6b998a7b38d119ecc.tar.gz external_llvm-de813b7108de64829ab006e6b998a7b38d119ecc.tar.bz2 | |
eliminate an unneeded branch, part of PR12357
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153458 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp index 1165660..0dbe11d 100644 --- a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp +++ b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp @@ -1362,13 +1362,8 @@ static bool CollectBSwapParts(Value *V, int OverallLeftShift, uint32_t ByteMask, // part of the value (e.g. byte 3) then it must be shifted right. If from the // low part, it must be shifted left. unsigned DestByteNo = InputByteNo + OverallLeftShift; - if (InputByteNo < ByteValues.size()/2) { - if (ByteValues.size()-1-DestByteNo != InputByteNo) - return true; - } else { - if (ByteValues.size()-1-DestByteNo != InputByteNo) - return true; - } + if (ByteValues.size()-1-DestByteNo != InputByteNo) + return true; // If the destination byte value is already defined, the values are or'd // together, which isn't a bswap (unless it's an or of the same bits). |