diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -58,7 +58,7 @@
     return TT.isGNUEnvironment() || TT.isMusl();
   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
   // not have it.
-  return TT.isOSFreeBSD() || TT.isOSSolaris() || TT.isOSDarwin();
+  return TT.isOSFreeBSD() || TT.isOSSolaris();
 }
 
 /// Initialize the set of available library functions based on the specified
diff --git a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
--- a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
+++ b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
@@ -241,8 +241,8 @@
 ; CHECK: declare i64 @atoll(i8* nocapture) [[G2]]
 declare i64 @atoll(i8*)
 
-; CHECK-DARWIN: declare i32 @bcmp(i8* nocapture, i8* nocapture, i64) [[G2]]
 ; CHECK-LINUX: declare i32 @bcmp(i8* nocapture, i8* nocapture, i64) [[G2]]
+; CHECK-DARWIN-NOT: declare i32 @bcmp(i8* nocapture, i8* nocapture, i64) [[G2]]
 ; CHECK-UNKNOWN-NOT: declare i32 @bcmp(i8* nocapture, i8* nocapture, i64) [[G2]]
 ; CHECK-NVPTX-NOT: declare i32 @bcmp(i8* nocapture, i8* nocapture, i64) [[G2]]
 declare i32 @bcmp(i8*, i8*, i64)