add memset and memcpy, though they are always available for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125973 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Target/TargetLibraryInfo.h

@@ -17,6 +17,12 @@ namespace llvm {
 
   namespace LibFunc {
     enum Func {
+      /// void *memset(void *b, int c, size_t len);
+      memset,
+      
+      // void *memcpy(void *s1, const void *s2, size_t n);
+      memcpy,
+      
       /// void memset_pattern16(void *b, const void *pattern16, size_t len);
       memset_pattern16,