-; RUN: llvm-as < %s | llc -march=x86-64 | grep movq.*8.*rsp.*rax
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck -check-prefix=X86-64 %s
+; Win64 has not supported byval yet.
+; RUN: llc < %s -march=x86 | FileCheck -check-prefix=X86 %s
+
+; X86: movl 4(%esp), %eax
+; X86: movl 8(%esp), %edx
+
+; X86-64: movq 8(%rsp), %rax
%struct.s = type { i64, i64, i64 }