90 lines
3.9 KiB
LLVM
90 lines
3.9 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; Test that when extracting the same unknown vector index from an
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; insertelement the dynamic indexing is folded away.
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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; No dynamic indexing required
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; GCN-LABEL: {{^}}extract_insert_same_dynelt_v4i32:
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; GCN: s_load_dword [[VAL:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd{{$}}
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; GCN-NOT buffer_load_dword
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; GCN-NOT: [[VAL]]
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; GCN: v_mov_b32_e32 [[VVAL:v[0-9]+]], [[VAL]]
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; GCN-NOT: [[VVAL]]
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; GCN: buffer_store_dword [[VVAL]]
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define amdgpu_kernel void @extract_insert_same_dynelt_v4i32(i32 addrspace(1)* %out, <4 x i32> addrspace(1)* %in, i32 %val, i32 %idx) #1 {
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%id = call i32 @llvm.amdgcn.workitem.id.x()
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%id.ext = sext i32 %id to i64
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%gep.in = getelementptr inbounds <4 x i32>, <4 x i32> addrspace(1)* %in, i64 %id.ext
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%gep.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %id.ext
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%vec = load <4 x i32>, <4 x i32> addrspace(1)* %gep.in
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%insert = insertelement <4 x i32> %vec, i32 %val, i32 %idx
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%extract = extractelement <4 x i32> %insert, i32 %idx
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store i32 %extract, i32 addrspace(1)* %gep.out
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ret void
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}
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; GCN-LABEL: {{^}}extract_insert_different_dynelt_v4i32:
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; GCN: buffer_load_dwordx4
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: v_cndmask_b32
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; GCN: buffer_store_dword v
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define amdgpu_kernel void @extract_insert_different_dynelt_v4i32(i32 addrspace(1)* %out, <4 x i32> addrspace(1)* %in, i32 %val, i32 %idx0, i32 %idx1) #1 {
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%id = call i32 @llvm.amdgcn.workitem.id.x()
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%id.ext = sext i32 %id to i64
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%gep.in = getelementptr inbounds <4 x i32>, <4 x i32> addrspace(1)* %in, i64 %id.ext
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%gep.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %id.ext
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%vec = load <4 x i32>, <4 x i32> addrspace(1)* %gep.in
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%insert = insertelement <4 x i32> %vec, i32 %val, i32 %idx0
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%extract = extractelement <4 x i32> %insert, i32 %idx1
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store i32 %extract, i32 addrspace(1)* %gep.out
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ret void
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}
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; GCN-LABEL: {{^}}extract_insert_same_elt2_v4i32:
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; GCN: s_load_dword [[VAL:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd{{$}}
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; GCN-NOT buffer_load_dword
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; GCN-NOT: [[VAL]]
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; GCN: v_mov_b32_e32 [[VVAL:v[0-9]+]], [[VAL]]
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; GCN-NOT: [[VVAL]]
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; GCN: buffer_store_dword [[VVAL]]
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define amdgpu_kernel void @extract_insert_same_elt2_v4i32(i32 addrspace(1)* %out, <4 x i32> addrspace(1)* %in, i32 %val, i32 %idx) #1 {
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%id = call i32 @llvm.amdgcn.workitem.id.x()
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%id.ext = sext i32 %id to i64
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%gep.in = getelementptr inbounds <4 x i32>, <4 x i32> addrspace(1)* %in, i64 %id.ext
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%gep.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %id.ext
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%vec = load <4 x i32>, <4 x i32> addrspace(1)* %gep.in
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%insert = insertelement <4 x i32> %vec, i32 %val, i32 %idx
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%extract = extractelement <4 x i32> %insert, i32 %idx
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store i32 %extract, i32 addrspace(1)* %gep.out
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ret void
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}
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; GCN-LABEL: {{^}}extract_insert_same_dynelt_v4f32:
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; GCN: s_load_dword [[VAL:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd{{$}}
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; GCN-NOT buffer_load_dword
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; GCN-NOT: [[VAL]]
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; GCN: v_mov_b32_e32 [[VVAL:v[0-9]+]], [[VAL]]
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; GCN-NOT: [[VVAL]]
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; GCN: buffer_store_dword [[VVAL]]
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define amdgpu_kernel void @extract_insert_same_dynelt_v4f32(float addrspace(1)* %out, <4 x float> addrspace(1)* %in, float %val, i32 %idx) #1 {
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%id = call i32 @llvm.amdgcn.workitem.id.x()
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%id.ext = sext i32 %id to i64
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%gep.in = getelementptr inbounds <4 x float>, <4 x float> addrspace(1)* %in, i64 %id.ext
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%gep.out = getelementptr inbounds float, float addrspace(1)* %out, i64 %id.ext
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%vec = load volatile <4 x float>, <4 x float> addrspace(1)* %gep.in
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%insert = insertelement <4 x float> %vec, float %val, i32 %idx
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%extract = extractelement <4 x float> %insert, i32 %idx
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store float %extract, float addrspace(1)* %gep.out
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ret void
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}
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attributes #0 = { nounwind readnone }
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attributes #1 = { nounwind }
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