derek.holloway
7502bf64a4
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43 lines
1.6 KiB
LLVM
43 lines
1.6 KiB
LLVM
; RUN: llc -mtriple=amdgcn < %s | FileCheck -check-prefix=GCN %s
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; RUN: not llc -mtriple=amdgcn -mcpu=fiji < %s 2>&1 | FileCheck -check-prefix=ERROR %s
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; ERROR: error: <unknown>:0:0: in function rcp_legacy_f32 void (ptr addrspace(1), float): intrinsic not supported on subtarget
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declare float @llvm.amdgcn.rcp.legacy(float) #0
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; GCN-LABEL: {{^}}rcp_legacy_f32:
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; GCN: v_rcp_legacy_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}
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define amdgpu_kernel void @rcp_legacy_f32(ptr addrspace(1) %out, float %src) #1 {
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%rcp = call float @llvm.amdgcn.rcp.legacy(float %src) #0
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store float %rcp, ptr addrspace(1) %out, align 4
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ret void
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}
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; TODO: Really these should be constant folded
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; GCN-LABEL: {{^}}rcp_legacy_f32_constant_4.0
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; GCN: v_rcp_legacy_f32_e32 {{v[0-9]+}}, 4.0
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define amdgpu_kernel void @rcp_legacy_f32_constant_4.0(ptr addrspace(1) %out) #1 {
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%rcp = call float @llvm.amdgcn.rcp.legacy(float 4.0) #0
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store float %rcp, ptr addrspace(1) %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}rcp_legacy_f32_constant_100.0
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; GCN: v_rcp_legacy_f32_e32 {{v[0-9]+}}, 0x42c80000
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define amdgpu_kernel void @rcp_legacy_f32_constant_100.0(ptr addrspace(1) %out) #1 {
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%rcp = call float @llvm.amdgcn.rcp.legacy(float 100.0) #0
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store float %rcp, ptr addrspace(1) %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}rcp_legacy_undef_f32:
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; GCN-NOT: v_rcp_legacy_f32
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define amdgpu_kernel void @rcp_legacy_undef_f32(ptr addrspace(1) %out) #1 {
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%rcp = call float @llvm.amdgcn.rcp.legacy(float poison)
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store float %rcp, ptr addrspace(1) %out, align 4
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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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