diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/BuildLibCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/BuildLibCalls.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp index e8ce3f92749..71316ce8f75 100644 --- a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp +++ b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp @@ -306,12 +306,21 @@ bool llvm::inferLibFuncAttributes(Function &F, const TargetLibraryInfo &TLI) { case LibFunc_memcpy: Changed |= setDoesNotAlias(F, 0); Changed |= setDoesNotAlias(F, 1); - LLVM_FALLTHROUGH; + Changed |= setReturnedArg(F, 0); + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; case LibFunc_memmove: Changed |= setReturnedArg(F, 0); - LLVM_FALLTHROUGH; + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; case LibFunc_mempcpy: case LibFunc_memccpy: + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotAlias(F, 1); Changed |= setDoesNotThrow(F); Changed |= setDoesNotCapture(F, 1); Changed |= setOnlyReadsMemory(F, 1); |
