1; RUN: llc -mtriple x86_64-w64-mingw32 %s -o - | FileCheck %s
2
3declare void @foo({ float, double }* byval({ float, double }))
4@G = external constant { float, double }
5
6define void @bar()
7{
8; Make sure we're creating a temporary stack slot, rather than just passing
9; the pointer through unmodified.
10; CHECK-LABEL: @bar
11; CHECK: movq    .refptr.G(%rip), %rax
12; CHECK: movq    (%rax), %rcx
13; CHECK: movq    8(%rax), %rax
14; CHECK: movq    %rax, 40(%rsp)
15; CHECK: movq    %rcx, 32(%rsp)
16; CHECK: leaq    32(%rsp), %rcx
17    call void @foo({ float, double }* byval({ float, double }) @G)
18    ret void
19}
20
21define void @baz({ float, double }* byval({ float, double }) %arg)
22{
23; On Win64 the byval is effectively ignored on declarations, since we do
24; pass a real pointer in registers. However, by our semantics if we pass
25; the pointer on to another byval function, we do need to make a copy.
26; CHECK-LABEL: @baz
27; CHECK: movq	(%rcx), %rax
28; CHECK: movq	8(%rcx), %rcx
29; CHECK: movq	%rcx, 40(%rsp)
30; CHECK: movq	%rax, 32(%rsp)
31; CHECK: leaq	32(%rsp), %rcx
32    call void @foo({ float, double }* byval({ float, double }) %arg)
33    ret void
34}
35
36declare void @foo2({ float, double }* byval({ float, double }), { float, double }* byval({ float, double }), { float, double }* byval({ float, double }), { float, double }* byval({ float, double }), { float, double }* byval({ float, double }), i64 %f)
37@data = external constant { float, double }
38
39define void @test() {
40; CHECK-LABEL: @test
41; CHECK:      movq    (%rax), %rcx
42; CHECK-NEXT: movq    8(%rax), %rax
43; CHECK-NEXT: movq    %rax, 120(%rsp)
44; CHECK-NEXT: movq    %rcx, 112(%rsp)
45; CHECK-NEXT: movq    %rcx, 96(%rsp)
46; CHECK-NEXT: movq    %rax, 104(%rsp)
47; CHECK-NEXT: movq    %rcx, 80(%rsp)
48; CHECK-NEXT: movq    %rax, 88(%rsp)
49; CHECK-NEXT: movq    %rcx, 64(%rsp)
50; CHECK-NEXT: movq    %rax, 72(%rsp)
51; CHECK-NEXT: movq    %rax, 56(%rsp)
52; CHECK-NEXT: movq    %rcx, 48(%rsp)
53; CHECK-NEXT: leaq    48(%rsp), %rax
54; CHECK-NEXT: movq    %rax, 32(%rsp)
55; CHECK-NEXT: movq    $10, 40(%rsp)
56; CHECK-NEXT: leaq    112(%rsp), %rcx
57; CHECK-NEXT: leaq    96(%rsp), %rdx
58; CHECK-NEXT: leaq    80(%rsp), %r8
59; CHECK-NEXT: leaq    64(%rsp), %r9
60  call void @foo2({ float, double }* byval({ float, double }) @G, { float, double }* byval({ float, double }) @G, { float, double }* byval({ float, double }) @G, { float, double }* byval({ float, double }) @G, { float, double }* byval({ float, double }) @G, i64 10)
61  ret void
62}
63