-; RUN: llvm-as < %s | llc -march=x86-64 | grep rep.movsl | count 2
-; RUN: llvm-as < %s | llc -march=x86 | grep rep.movsl | count 2
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64
+; X64-NOT: movsq
+; X64: rep
+; X64-NOT: rep
+; X64: movsq
+; X64-NOT: movsq
+; X64: rep
+; X64-NOT: rep
+; X64: movsq
+; X64-NOT: rep
+; X64-NOT: movsq
-%struct.s = type { i32, i32, i32, i32, i32, i32 }
+; Win64 has not supported byval yet.
-define void @g(i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6) {
+; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X32
+; X32-NOT: movsl
+; X32: rep
+; X32-NOT: rep
+; X32: movsl
+; X32-NOT: movsl
+; X32: rep
+; X32-NOT: rep
+; X32: movsl
+; X32-NOT: rep
+; X32-NOT: movsl
+
+%struct.s = type { i32, i32, i32, i32, i32, i32, i32, i32,
+ i32, i32, i32, i32, i32, i32, i32, i32,
+ i32, i32, i32, i32, i32, i32, i32, i32,
+ i32, i32, i32, i32, i32, i32, i32, i32,
+ i32 }
+
+define void @g(i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6) nounwind {
entry:
%d = alloca %struct.s, align 16
%tmp = getelementptr %struct.s* %d, i32 0, i32 0