29 lines
938 B
LLVM
29 lines
938 B
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
|
|
|
|
; GCN-LABEL: {{^}}test_barrier:
|
|
; GCN: buffer_store_dword
|
|
; GCN: s_waitcnt
|
|
; GCN: s_barrier
|
|
define void @test_barrier(i32 addrspace(1)* %out) #0 {
|
|
entry:
|
|
%tmp = call i32 @llvm.amdgcn.workitem.id.x()
|
|
%tmp1 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp
|
|
store i32 %tmp, i32 addrspace(1)* %tmp1
|
|
call void @llvm.amdgcn.s.barrier()
|
|
%tmp2 = call i32 @llvm.r600.read.local.size.x()
|
|
%tmp3 = sub i32 %tmp2, 1
|
|
%tmp4 = sub i32 %tmp3, %tmp
|
|
%tmp5 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp4
|
|
%tmp6 = load i32, i32 addrspace(1)* %tmp5
|
|
store i32 %tmp6, i32 addrspace(1)* %tmp1
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.amdgcn.s.barrier() #1
|
|
declare i32 @llvm.amdgcn.workitem.id.x() #2
|
|
declare i32 @llvm.r600.read.local.size.x() #2
|
|
|
|
attributes #0 = { nounwind }
|
|
attributes #1 = { convergent nounwind }
|
|
attributes #2 = { nounwind readnone }
|