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46 lines
1.3 KiB
LLVM
46 lines
1.3 KiB
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa < %s | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: {{^}}select_undef_lhs:
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; GCN: s_waitcnt
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; GCN-NOT: v_cmp
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; GCN-NOT: v_cndmask
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; GCN-NEXT: s_setpc_b64
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define float @select_undef_lhs(float %val, i1 %cond) {
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%undef = call float @llvm.amdgcn.rcp.f32(float undef)
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%sel = select i1 %cond, float %undef, float %val
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ret float %sel
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}
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; GCN-LABEL: {{^}}select_undef_rhs:
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; GCN: s_waitcnt
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; GCN-NOT: v_cmp
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; GCN-NOT: v_cndmask
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; GCN-NEXT: s_setpc_b64
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define float @select_undef_rhs(float %val, i1 %cond) {
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%undef = call float @llvm.amdgcn.rcp.f32(float undef)
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%sel = select i1 %cond, float %val, float %undef
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ret float %sel
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}
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; GCN-LABEL: {{^}}select_undef_n1:
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; GCN: v_mov_b32_e32 [[RES:v[0-9]+]], 1.0
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; GCN: store_dword {{[^,]+}}, [[RES]]
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define void @select_undef_n1(float addrspace(1)* %a, i32 %c) {
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%cc = icmp eq i32 %c, 0
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%sel = select i1 %cc, float 1.000000e+00, float undef
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store float %sel, float addrspace(1)* %a
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ret void
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}
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; GCN-LABEL: {{^}}select_undef_n2:
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; GCN: v_mov_b32_e32 [[RES:v[0-9]+]], 1.0
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; GCN: store_dword {{[^,]+}}, [[RES]]
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define void @select_undef_n2(float addrspace(1)* %a, i32 %c) {
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%cc = icmp eq i32 %c, 0
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%sel = select i1 %cc, float undef, float 1.000000e+00
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store float %sel, float addrspace(1)* %a
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ret void
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}
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declare float @llvm.amdgcn.rcp.f32(float)
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