1; RUN: llc -mtriple x86_64-unknown-windows-msvc %s -o - | FileCheck %s
2; RUN: llc -mtriple x86_64-unknown-windows-msvc %s -o - -fast-isel | FileCheck %s
3
4define i8* @argument(i8* swiftasync %in) {
5  ret i8* %in
6}
7
8; CHECK-LABEL: argument:
9; CHECK: movq    %r14, %rax
10
11define void @call(i8* %in) {
12  call i8* @argument(i8* swiftasync %in)
13  ret void
14}
15
16; CHECK-LABEL: call:
17; CHECK: movq %rcx, %r14
18