diff options
| -rw-r--r-- | lib/Transforms/Scalar/SimplifyLibCalls.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp index 4c6580f64a..30c3f3f398 100644 --- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp +++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp @@ -905,12 +905,11 @@ struct StrLenOpt : public LibCallOptimization { if (uint64_t Len = GetStringLength(Src)) return ConstantInt::get(CI->getType(), Len-1); - // Handle strlen(p) != 0. - if (!IsOnlyUsedInZeroEqualityComparison(CI)) return 0; - // strlen(x) != 0 --> *x != 0 // strlen(x) == 0 --> *x == 0 - return B.CreateZExt(B.CreateLoad(Src, "strlenfirst"), CI->getType()); + if (IsOnlyUsedInZeroEqualityComparison(CI)) + return B.CreateZExt(B.CreateLoad(Src, "strlenfirst"), CI->getType()); + return 0; } }; |