Change the default attributes for llvm.prefetch to inaccessiblemem_or_argmemonly
so that we can perform some optimizations across it.

Fixes PR32365

llvm-svn: 298781
diff --git a/llvm/test/Bitcode/compatibility-3.9.ll b/llvm/test/Bitcode/compatibility-3.9.ll
index 300be33..2a6cfe1 100644
--- a/llvm/test/Bitcode/compatibility-3.9.ll
+++ b/llvm/test/Bitcode/compatibility-3.9.ll
@@ -1241,7 +1241,7 @@
   ; CHECK: select <2 x i1> <i1 true, i1 false>, <2 x i8> <i8 2, i8 3>, <2 x i8> <i8 3, i8 2>
 
   call void @f.nobuiltin() builtin
-  ; CHECK: call void @f.nobuiltin() #40
+  ; CHECK: call void @f.nobuiltin() #41
 
   call fastcc noalias i32* @f.noalias() noinline
   ; CHECK: call fastcc noalias i32* @f.noalias() #12
@@ -1588,7 +1588,7 @@
 }
 
 declare void @f.writeonly() writeonly
-; CHECK: declare void @f.writeonly() #39
+; CHECK: declare void @f.writeonly() #40
 
 ; CHECK: attributes #0 = { alignstack=4 }
 ; CHECK: attributes #1 = { alignstack=8 }
@@ -1629,8 +1629,9 @@
 ; CHECK: attributes #36 = { argmemonly nounwind readonly }
 ; CHECK: attributes #37 = { argmemonly nounwind }
 ; CHECK: attributes #38 = { nounwind readonly }
-; CHECK: attributes #39 = { writeonly }
-; CHECK: attributes #40 = { builtin }
+; CHECK: attributes #39 = { inaccessiblemem_or_argmemonly nounwind }
+; CHECK: attributes #40 = { writeonly }
+; CHECK: attributes #41 = { builtin }
 
 ;; Metadata