1 ; RUN: llc -march=amdgcn -mcpu=tonga < %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 7 define void @test(<256 x i32> addrspace(1)* %out, <256 x i32> addrspace(1)* %in) { 8 entry: 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 "", "~{SGPR4},~{SGPR8},~{SGPR12},~{SGPR16},~{SGPR20},~{SGPR24},~{SGPR28}" () 20 call void asm sideeffect "", "~{SGPR32},~{SGPR36},~{SGPR40},~{SGPR44},~{SGPR48},~{SGPR52},~{SGPR56}" () 21 call void asm sideeffect "", "~{SGPR60},~{SGPR64},~{SGPR68}" () 22 ret void 23 } 24 25 declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #0 26 declare i32 @llvm.amdgcn.mbcnt.hi(i32, i32) #0 27 28 attributes #0 = { nounwind readnone } 29
