eliminate an unneeded branch, part of PR12357

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153458 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
index 1165660f40f254df9cd0f2fd50db00da399b5a0f..0dbe11d2f01fe562f1f76656664354a273489e31 100644 (file)
--- 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).