1; RUN: opt -O1 -S -mtriple=amdgcn-unknown-amdhsa -amdgpu-internalize-symbols < %s | FileCheck -check-prefix=ALL -check-prefix=OPT %s
2; RUN: opt -O0 -S -mtriple=amdgcn-unknown-amdhsa -amdgpu-internalize-symbols < %s | FileCheck -check-prefix=ALL -check-prefix=OPTNONE %s
3
4; OPT-NOT: gvar_unused
5; OPTNONE: gvar_unused
6@gvar_unused = addrspace(1) global i32 undef, align 4
7
8; ALL: gvar_used
9@gvar_used = addrspace(1) global i32 undef, align 4
10
11; ALL: define internal fastcc void @func_used(
12define fastcc void @func_used(i32 addrspace(1)* %out, i32 %tid) #1 {
13entry:
14  store volatile i32 %tid, i32 addrspace(1)* %out
15  ret void
16}
17
18; ALL: define internal fastcc void @func_used_noinline(
19define fastcc void @func_used_noinline(i32 addrspace(1)* %out, i32 %tid) #2 {
20entry:
21  store volatile i32 %tid, i32 addrspace(1)* %out
22  ret void
23}
24
25; OPTNONE: define internal fastcc void @func_used_alwaysinline(
26; OPT-NOT: @func_used_alwaysinline
27define fastcc void @func_used_alwaysinline(i32 addrspace(1)* %out, i32 %tid) #3 {
28entry:
29  store volatile i32 %tid, i32 addrspace(1)* %out
30  ret void
31}
32
33; OPTNONE: define internal void @func_unused(
34; OPT-NOT: @func_unused
35define void @func_unused(i32 addrspace(1)* %out, i32 %tid) #2 {
36entry:
37  store volatile i32 %tid, i32 addrspace(1)* %out
38  ret void
39}
40
41; ALL: define amdgpu_kernel void @kernel_unused(
42define amdgpu_kernel void @kernel_unused(i32 addrspace(1)* %out) #1 {
43entry:
44  store volatile i32 1, i32 addrspace(1)* %out
45  ret void
46}
47
48; ALL: define amdgpu_kernel void @main_kernel()
49; ALL: tail call i32 @llvm.amdgcn.workitem.id.x
50; ALL: tail call fastcc void @func_used
51; ALL: tail call fastcc void @func_used_noinline
52; ALL: store volatile
53; ALL: ret void
54define amdgpu_kernel void @main_kernel() {
55entry:
56  %tid = tail call i32 @llvm.amdgcn.workitem.id.x()
57  tail call fastcc void @func_used(i32 addrspace(1)* @gvar_used, i32 %tid)
58  tail call fastcc void @func_used_noinline(i32 addrspace(1)* @gvar_used, i32 %tid)
59  tail call fastcc void @func_used_alwaysinline(i32 addrspace(1)* @gvar_used, i32 %tid)
60  ret void
61}
62
63declare i32 @llvm.amdgcn.workitem.id.x() #0
64
65attributes #0 = { nounwind readnone }
66attributes #1 = { nounwind }
67attributes #2 = { noinline nounwind }
68attributes #3 = { alwaysinline nounwind }
69