[llvm] 521b216 - [TargetLibraryInfo] memcpy and memset have optimized codegen.

[Clement Courbet via llvm-commits]

Author: Clement Courbet
Date: 2020-05-18T08:49:23+02:00
New Revision: 521b216094340e7934c1dd7905982cc778237cb8

URL: https://github.com/llvm/llvm-project/commit/521b216094340e7934c1dd7905982cc778237cb8
DIFF: https://github.com/llvm/llvm-project/commit/521b216094340e7934c1dd7905982cc778237cb8.diff

LOG: [TargetLibraryInfo] memcpy and memset have optimized codegen.

Summary:
Add memcpy and memset to the list of function with optimized codegen.
hasOptimizedCodeGen() was returning false for them.
This was not an issue when working with c++ as clang typically emits an
intrinsic rather than a libfunc call, but when working with IR,
this would cause some issues with sanitizers which would not correctly
mark the function as nobuiltin in `maybeMarkSanitizerLibraryCallNoBuiltin()`.

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78991

Added: 
    

Modified: 
    llvm/include/llvm/Analysis/TargetLibraryInfo.h

Removed: 
    


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diff  --git a/llvm/include/llvm/Analysis/TargetLibraryInfo.h b/llvm/include/llvm/Analysis/TargetLibraryInfo.h
index 427048003c46..0b57e95cddeb 100644
--- a/llvm/include/llvm/Analysis/TargetLibraryInfo.h
+++ b/llvm/include/llvm/Analysis/TargetLibraryInfo.h
@@ -350,6 +350,7 @@ class TargetLibraryInfo {
     case LibFunc_trunc:        case LibFunc_truncf:     case LibFunc_truncl:
     case LibFunc_log2:         case LibFunc_log2f:      case LibFunc_log2l:
     case LibFunc_exp2:         case LibFunc_exp2f:      case LibFunc_exp2l:
+    case LibFunc_memcpy:       case LibFunc_memset:     case LibFunc_memmove:
     case LibFunc_memcmp:       case LibFunc_bcmp:       case LibFunc_strcmp:
     case LibFunc_strcpy:       case LibFunc_stpcpy:     case LibFunc_strlen:
     case LibFunc_strnlen:      case LibFunc_memchr:     case LibFunc_mempcpy: