[llvm-commits] [llvm] r104692 - /llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp

[Benjamin Kramer]

Author: d0k
Date: Wed May 26 04:45:04 2010
New Revision: 104692

URL: http://llvm.org/viewvc/llvm-project?rev=104692&view=rev
Log:
Kill unneeded SExt.

Modified:
    llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp?rev=104692&r1=104691&r2=104692&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp Wed May 26 04:45:04 2010
@@ -564,7 +564,7 @@
                                  CI->getType(), "lhsv");
       Value *RHSV = B.CreateZExt(B.CreateLoad(CastToCStr(RHS, B), "rhsc"),
                                  CI->getType(), "rhsv");
-      return B.CreateSExt(B.CreateSub(LHSV, RHSV, "chardiff"), CI->getType());
+      return B.CreateSub(LHSV, RHSV, "chardiff");
     }
 
     // Constant folding: memcmp(x, y, l) -> cnst (all arguments are constant)