1; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck --check-prefix=TONGA %s
2
3; On Tonga and Iceland, limited SGPR availability means care must be taken to
4; allocate scratch registers correctly. Check that this test compiles without
5; error.
6; TONGA-LABEL: test
7define amdgpu_kernel void @test(<256 x i32> addrspace(1)* %out, <256 x i32> addrspace(1)* %in) {
8entry:
9  %mbcnt.lo = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
10  %tid = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 %mbcnt.lo)
11  %aptr = getelementptr <256 x i32>, <256 x i32> addrspace(1)* %in, i32 %tid
12  %a = load <256 x i32>, <256 x i32> addrspace(1)* %aptr
13  call void asm sideeffect "", "~{memory}" ()
14  %outptr = getelementptr <256 x i32>, <256 x i32> addrspace(1)* %in, i32 %tid
15  store <256 x i32> %a, <256 x i32> addrspace(1)* %outptr
16
17; mark 128-bit SGPR registers as used so they are unavailable for the
18; scratch resource descriptor
19  call void asm sideeffect "", "~{s4},~{s8},~{s12},~{s16},~{s20},~{s24},~{s28}" ()
20  call void asm sideeffect "", "~{s32},~{s36},~{s40},~{s44},~{s48},~{s52},~{s56}" ()
21  call void asm sideeffect "", "~{s60},~{s64},~{s68}" ()
22  ret void
23}
24
25declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #0
26declare i32 @llvm.amdgcn.mbcnt.hi(i32, i32) #0
27
28attributes #0 = { nounwind readnone }
29