local-memory.r600.ll
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; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
@local_memory.local_mem = internal unnamed_addr addrspace(3) global [128 x i32] undef, align 4
; Check that the LDS size emitted correctly
; EG: .long 166120
; EG-NEXT: .long 128
; FUNC-LABEL: {{^}}local_memory:
; EG: LDS_WRITE
; GROUP_BARRIER must be the last instruction in a clause
; EG: GROUP_BARRIER
; EG-NEXT: ALU clause
; EG: LDS_READ_RET
define amdgpu_kernel void @local_memory(i32 addrspace(1)* %out) #0 {
entry:
%y.i = call i32 @llvm.r600.read.tidig.x() #1
%arrayidx = getelementptr inbounds [128 x i32], [128 x i32] addrspace(3)* @local_memory.local_mem, i32 0, i32 %y.i
store i32 %y.i, i32 addrspace(3)* %arrayidx, align 4
%add = add nsw i32 %y.i, 1
%cmp = icmp eq i32 %add, 16
%.add = select i1 %cmp, i32 0, i32 %add
call void @llvm.r600.group.barrier()
%arrayidx1 = getelementptr inbounds [128 x i32], [128 x i32] addrspace(3)* @local_memory.local_mem, i32 0, i32 %.add
%tmp = load i32, i32 addrspace(3)* %arrayidx1, align 4
%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %y.i
store i32 %tmp, i32 addrspace(1)* %arrayidx2, align 4
ret void
}
@local_memory_two_objects.local_mem0 = internal unnamed_addr addrspace(3) global [4 x i32] undef, align 4
@local_memory_two_objects.local_mem1 = internal unnamed_addr addrspace(3) global [4 x i32] undef, align 4
; Check that the LDS size emitted correctly
; EG: .long 166120
; EG-NEXT: .long 8
; GCN: .long 47180
; GCN-NEXT: .long 32900
; FUNC-LABEL: {{^}}local_memory_two_objects:
; We would like to check the lds writes are using different
; addresses, but due to variations in the scheduler, we can't do
; this consistently on evergreen GPUs.
; EG: LDS_WRITE
; EG: LDS_WRITE
; GROUP_BARRIER must be the last instruction in a clause
; EG: GROUP_BARRIER
; EG-NEXT: ALU clause
; Make sure the lds reads are using different addresses, at different
; constant offsets.
; EG: LDS_READ_RET {{[*]*}} OQAP, {{PV|T}}[[ADDRR:[0-9]*\.[XYZW]]]
; EG-NOT: LDS_READ_RET {{[*]*}} OQAP, T[[ADDRR]]
define amdgpu_kernel void @local_memory_two_objects(i32 addrspace(1)* %out) #0 {
entry:
%x.i = call i32 @llvm.r600.read.tidig.x() #1
%arrayidx = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* @local_memory_two_objects.local_mem0, i32 0, i32 %x.i
store i32 %x.i, i32 addrspace(3)* %arrayidx, align 4
%mul = shl nsw i32 %x.i, 1
%arrayidx1 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* @local_memory_two_objects.local_mem1, i32 0, i32 %x.i
store i32 %mul, i32 addrspace(3)* %arrayidx1, align 4
%sub = sub nsw i32 3, %x.i
call void @llvm.r600.group.barrier()
%arrayidx2 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* @local_memory_two_objects.local_mem0, i32 0, i32 %sub
%tmp = load i32, i32 addrspace(3)* %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %x.i
store i32 %tmp, i32 addrspace(1)* %arrayidx3, align 4
%arrayidx4 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* @local_memory_two_objects.local_mem1, i32 0, i32 %sub
%tmp1 = load i32, i32 addrspace(3)* %arrayidx4, align 4
%add = add nsw i32 %x.i, 4
%arrayidx5 = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %add
store i32 %tmp1, i32 addrspace(1)* %arrayidx5, align 4
ret void
}
declare i32 @llvm.r600.read.tidig.x() #1
declare void @llvm.r600.group.barrier() #2
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }
attributes #2 = { convergent nounwind }