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40 lines
1.4 KiB
LLVM
40 lines
1.4 KiB
LLVM
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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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declare float @llvm.amdgcn.rsq.legacy(float) #0
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; FUNC-LABEL: {{^}}rsq_legacy_f32:
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; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}
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define void @rsq_legacy_f32(float addrspace(1)* %out, float %src) #1 {
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%rsq = call float @llvm.amdgcn.rsq.legacy(float %src) #0
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store float %rsq, float 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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; FUNC-LABEL: {{^}}rsq_legacy_f32_constant_4.0
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; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, 4.0
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define void @rsq_legacy_f32_constant_4.0(float addrspace(1)* %out) #1 {
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%rsq = call float @llvm.amdgcn.rsq.legacy(float 4.0) #0
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store float %rsq, float addrspace(1)* %out, align 4
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ret void
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}
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; FUNC-LABEL: {{^}}rsq_legacy_f32_constant_100.0
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; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, 0x42c80000
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define void @rsq_legacy_f32_constant_100.0(float addrspace(1)* %out) #1 {
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%rsq = call float @llvm.amdgcn.rsq.legacy(float 100.0) #0
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store float %rsq, float addrspace(1)* %out, align 4
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ret void
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}
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; FUNC-LABEL: {{^}}rsq_legacy_undef_f32:
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; SI-NOT: v_rsq_legacy_f32
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define void @rsq_legacy_undef_f32(float addrspace(1)* %out) #1 {
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%rsq = call float @llvm.amdgcn.rsq.legacy(float undef)
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store float %rsq, float 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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