derek.holloway
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38 lines
1.3 KiB
LLVM
38 lines
1.3 KiB
LLVM
; RUN: llc -mtriple=amdgcn < %s | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: {{^}}fold_mul_neg:
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; GCN: load_dword [[V:v[0-9]+]]
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; GCN: v_or_b32_e32 [[NEG:v[0-9]]], 0x80000000, [[V]]
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; GCN: store_dword [[NEG]]
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define amdgpu_kernel void @fold_mul_neg(ptr addrspace(1) %arg) {
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%tid = tail call i32 @llvm.amdgcn.workitem.id.x()
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%gep = getelementptr inbounds float, ptr addrspace(1) %arg, i32 %tid
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%v = load float, ptr addrspace(1) %gep, align 4
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%cmp = fcmp fast ogt float %v, 0.000000e+00
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%sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
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%mul = fmul fast float %v, %sel
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store float %mul, ptr addrspace(1) %gep, align 4
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ret void
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}
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; GCN-LABEL: {{^}}fold_mul_abs:
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; GCN: load_dword [[V:v[0-9]+]]
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; GCN: v_and_b32_e32 [[ABS:v[0-9]]], 0x7fffffff, [[V]]
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; GCN: store_dword [[ABS]]
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define amdgpu_kernel void @fold_mul_abs(ptr addrspace(1) %arg) {
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%tid = tail call i32 @llvm.amdgcn.workitem.id.x()
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%gep = getelementptr inbounds float, ptr addrspace(1) %arg, i32 %tid
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%v = load float, ptr addrspace(1) %gep, align 4
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%cmp = fcmp fast olt float %v, 0.000000e+00
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%sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
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%mul = fmul fast float %v, %sel
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store float %mul, ptr addrspace(1) %gep, align 4
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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 speculatable }
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