diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/SimplifyLibCalls.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp index f562a1b..3ae79ee 100644 --- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp +++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp @@ -342,6 +342,9 @@ struct StrNCmpOpt : public LibCallOptimization { if (Length == 0) // strncmp(x,y,0) -> 0 return ConstantInt::get(CI->getType(), 0); + if (TD && Length == 1) // strncmp(x,y,1) -> memcmp(x,y,1) + return EmitMemCmp(Str1P, Str2P, CI->getOperand(3), B, TD); + std::string Str1, Str2; bool HasStr1 = GetConstantStringInfo(Str1P, Str1); bool HasStr2 = GetConstantStringInfo(Str2P, Str2); |