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8bc95d0a47
This addresses a TODO to handle operations besides and. This also starts eliminating no-op operations with a constant that can emerge later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281488 91177308-0d34-0410-b5e6-96231b3b80d8
118 lines
5.2 KiB
LLVM
118 lines
5.2 KiB
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; Extract the high bit of the 1st quarter
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; GCN-LABEL: {{^}}v_uextract_bit_31_i128:
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; GCN: buffer_load_dword [[VAL:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO0:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO1:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO2:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN: v_lshrrev_b32_e32 v[[SHIFT:[0-9]+]], 31, [[VAL]]
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; GCN: buffer_store_dwordx4 v{{\[}}[[SHIFT]]:[[ZERO2]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: s_endpgm
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define void @v_uextract_bit_31_i128(i128 addrspace(1)* %out, i128 addrspace(1)* %in) #1 {
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%id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i128, i128 addrspace(1)* %in, i32 %id.x
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%out.gep = getelementptr i128, i128 addrspace(1)* %out, i32 %id.x
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%ld.64 = load i128, i128 addrspace(1)* %in.gep
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%srl = lshr i128 %ld.64, 31
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%bit = and i128 %srl, 1
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store i128 %bit, i128 addrspace(1)* %out.gep
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ret void
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}
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; Extract the high bit of the 2nd quarter
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; GCN-LABEL: {{^}}v_uextract_bit_63_i128:
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; GCN: buffer_load_dword [[VAL:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
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; GCN-DAG: v_mov_b32_e32 v[[ZERO0:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO1:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO2:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN-DAG: v_lshrrev_b32_e32 v[[SHIFT:[0-9]+]], 31, [[VAL]]
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; GCN-DAG: buffer_store_dwordx4 v{{\[}}[[SHIFT]]:[[ZERO2]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: s_endpgm
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define void @v_uextract_bit_63_i128(i128 addrspace(1)* %out, i128 addrspace(1)* %in) #1 {
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%id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i128, i128 addrspace(1)* %in, i32 %id.x
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%out.gep = getelementptr i128, i128 addrspace(1)* %out, i32 %id.x
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%ld.64 = load i128, i128 addrspace(1)* %in.gep
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%srl = lshr i128 %ld.64, 63
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%bit = and i128 %srl, 1
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store i128 %bit, i128 addrspace(1)* %out.gep
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ret void
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}
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; Extract the high bit of the 3rd quarter
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; GCN-LABEL: {{^}}v_uextract_bit_95_i128:
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; GCN: buffer_load_dword [[VAL:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
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; GCN-DAG: v_mov_b32_e32 v[[ZERO0:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO1:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO2:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN-DAG: v_lshrrev_b32_e32 v[[SHIFT:[0-9]+]], 31, [[VAL]]
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; GCN-DAG: buffer_store_dwordx4 v{{\[}}[[SHIFT]]:[[ZERO2]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: s_endpgm
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define void @v_uextract_bit_95_i128(i128 addrspace(1)* %out, i128 addrspace(1)* %in) #1 {
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%id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i128, i128 addrspace(1)* %in, i32 %id.x
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%out.gep = getelementptr i128, i128 addrspace(1)* %out, i32 %id.x
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%ld.64 = load i128, i128 addrspace(1)* %in.gep
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%srl = lshr i128 %ld.64, 95
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%bit = and i128 %srl, 1
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store i128 %bit, i128 addrspace(1)* %out.gep
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ret void
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}
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; Extract the high bit of the 4th quarter
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; GCN-LABEL: {{^}}v_uextract_bit_127_i128:
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; GCN: buffer_load_dword [[VAL:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO0:[0-9]+]], 0{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO1:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN: v_mov_b32_e32 v[[ZERO2:[0-9]+]], v[[ZERO0]]{{$}}
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; GCN-DAG: v_lshrrev_b32_e32 v[[SHIFT:[0-9]+]], 31, [[VAL]]
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; GCN-DAG: buffer_store_dwordx4 v{{\[}}[[SHIFT]]:[[ZERO2]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: s_endpgm
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define void @v_uextract_bit_127_i128(i128 addrspace(1)* %out, i128 addrspace(1)* %in) #1 {
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%id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i128, i128 addrspace(1)* %in, i32 %id.x
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%out.gep = getelementptr i128, i128 addrspace(1)* %out, i32 %id.x
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%ld.64 = load i128, i128 addrspace(1)* %in.gep
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%srl = lshr i128 %ld.64, 127
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%bit = and i128 %srl, 1
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store i128 %bit, i128 addrspace(1)* %out.gep
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ret void
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}
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; Spans more than 2 dword boundaries
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; GCN-LABEL: {{^}}v_uextract_bit_34_100_i128:
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; GCN: buffer_load_dwordx4 v{{\[}}[[VAL0:[0-9]+]]:[[VAL3:[0-9]+]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN-DAG: v_lshl_b64 v{{\[}}[[SHLLO:[0-9]+]]:[[SHLHI:[0-9]+]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, 30
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; GCN-DAG: v_lshrrev_b32_e32 v[[ELT1PART:[0-9]+]], 2, v{{[[0-9]+}}
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; GCN-DAG: v_bfe_u32 v[[ELT2PART:[0-9]+]], v[[VAL3]], 2, 2{{$}}
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; GCN-DAG: v_mov_b32_e32 v[[ZERO:[0-9]+]], 0{{$}}
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; GCN-DAG: v_or_b32_e32 v[[OR0:[0-9]+]], v[[SHLLO]], v[[ELT1PART]]
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; GCN-DAG: buffer_store_dwordx4 v{{\[}}[[OR0]]:[[ZERO]]{{\]}}, v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; GCN: s_endpgm
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define void @v_uextract_bit_34_100_i128(i128 addrspace(1)* %out, i128 addrspace(1)* %in) #1 {
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%id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i128, i128 addrspace(1)* %in, i32 %id.x
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%out.gep = getelementptr i128, i128 addrspace(1)* %out, i32 %id.x
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%ld.64 = load i128, i128 addrspace(1)* %in.gep
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%srl = lshr i128 %ld.64, 34
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%bit = and i128 %srl, 73786976294838206463
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store i128 %bit, i128 addrspace(1)* %out.gep
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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attributes #0 = { nounwind readnone }
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attributes #1 = { nounwind }
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