forked from OSchip/llvm-project
65 lines
2.5 KiB
LLVM
65 lines
2.5 KiB
LLVM
; RUN: llc -march=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: name: s_ctlz_i32
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; GCN: S_FLBIT_I32_B32
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define amdgpu_kernel void @s_ctlz_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind {
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%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
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store i32 %ctlz, i32 addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: name: v_ctlz_i32
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; GCN: V_FFBH_U32_e64
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define amdgpu_kernel void @v_ctlz_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i32, i32 addrspace(1)* %valptr, i32 %tid
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%val = load i32, i32 addrspace(1)* %in.gep, align 4
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%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
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store i32 %ctlz, i32 addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: name: s_cttz_i32
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; GCN: S_FF1_I32_B32
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define amdgpu_kernel void @s_cttz_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind {
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%cttz = call i32 @llvm.cttz.i32(i32 %val, i1 false) nounwind readnone
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store i32 %cttz, i32 addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: name: v_cttz_i32
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; GCN: V_FFBL_B32_e64
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define amdgpu_kernel void @v_cttz_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i32, i32 addrspace(1)* %valptr, i32 %tid
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%val = load i32, i32 addrspace(1)* %in.gep, align 4
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%cttz = call i32 @llvm.cttz.i32(i32 %val, i1 false) nounwind readnone
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store i32 %cttz, i32 addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: name: s_flbit
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; GCN: S_FLBIT_I32
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define amdgpu_kernel void @s_flbit(i32 addrspace(1)* noalias %out, i32 %val) #0 {
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%r = call i32 @llvm.amdgcn.sffbh.i32(i32 %val)
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store i32 %r, i32 addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: name: v_flbit
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; GCN: V_FFBH_I32_e64
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define amdgpu_kernel void @v_flbit(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) #0 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%in.gep = getelementptr i32, i32 addrspace(1)* %valptr, i32 %tid
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%val = load i32, i32 addrspace(1)* %in.gep, align 4
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%r = call i32 @llvm.amdgcn.sffbh.i32(i32 %val)
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store i32 %r, i32 addrspace(1)* %out, align 4
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ret void
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}
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declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
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declare i32 @llvm.cttz.i32(i32, i1) nounwind readnone
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declare i32 @llvm.amdgcn.sffbh.i32(i32)
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declare i32 @llvm.amdgcn.workitem.id.x() nounwind readnone
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