forked from OSchip/llvm-project
29 lines
1.3 KiB
LLVM
29 lines
1.3 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck --check-prefix=TONGA %s
|
|
|
|
; On Tonga and Iceland, limited SGPR availability means care must be taken to
|
|
; allocate scratch registers correctly. Check that this test compiles without
|
|
; error.
|
|
; TONGA-LABEL: test
|
|
define void @test(<256 x i32> addrspace(1)* %out, <256 x i32> addrspace(1)* %in) {
|
|
entry:
|
|
%mbcnt.lo = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
|
|
%tid = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 %mbcnt.lo)
|
|
%aptr = getelementptr <256 x i32>, <256 x i32> addrspace(1)* %in, i32 %tid
|
|
%a = load <256 x i32>, <256 x i32> addrspace(1)* %aptr
|
|
call void asm sideeffect "", "~{memory}" ()
|
|
%outptr = getelementptr <256 x i32>, <256 x i32> addrspace(1)* %in, i32 %tid
|
|
store <256 x i32> %a, <256 x i32> addrspace(1)* %outptr
|
|
|
|
; mark 128-bit SGPR registers as used so they are unavailable for the
|
|
; scratch resource descriptor
|
|
call void asm sideeffect "", "~{SGPR4},~{SGPR8},~{SGPR12},~{SGPR16},~{SGPR20},~{SGPR24},~{SGPR28}" ()
|
|
call void asm sideeffect "", "~{SGPR32},~{SGPR36},~{SGPR40},~{SGPR44},~{SGPR48},~{SGPR52},~{SGPR56}" ()
|
|
call void asm sideeffect "", "~{SGPR60},~{SGPR64},~{SGPR68}" ()
|
|
ret void
|
|
}
|
|
|
|
declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #0
|
|
declare i32 @llvm.amdgcn.mbcnt.hi(i32, i32) #0
|
|
|
|
attributes #0 = { nounwind readnone }
|