1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
3 declare float @llvm.amdgcn.rsq.legacy(float) #0
5 ; FUNC-LABEL: {{^}}rsq_legacy_f32:
6 ; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}
7 define amdgpu_kernel void @rsq_legacy_f32(float addrspace(1)* %out, float %src) #1 {
8 %rsq = call float @llvm.amdgcn.rsq.legacy(float %src) #0
9 store float %rsq, float addrspace(1)* %out, align 4
13 ; TODO: Really these should be constant folded
14 ; FUNC-LABEL: {{^}}rsq_legacy_f32_constant_4.0
15 ; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, 4.0
16 define amdgpu_kernel void @rsq_legacy_f32_constant_4.0(float addrspace(1)* %out) #1 {
17 %rsq = call float @llvm.amdgcn.rsq.legacy(float 4.0) #0
18 store float %rsq, float addrspace(1)* %out, align 4
22 ; FUNC-LABEL: {{^}}rsq_legacy_f32_constant_100.0
23 ; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, 0x42c80000
24 define amdgpu_kernel void @rsq_legacy_f32_constant_100.0(float addrspace(1)* %out) #1 {
25 %rsq = call float @llvm.amdgcn.rsq.legacy(float 100.0) #0
26 store float %rsq, float addrspace(1)* %out, align 4
30 ; FUNC-LABEL: {{^}}rsq_legacy_undef_f32:
31 ; SI-NOT: v_rsq_legacy_f32
32 define amdgpu_kernel void @rsq_legacy_undef_f32(float addrspace(1)* %out) #1 {
33 %rsq = call float @llvm.amdgcn.rsq.legacy(float undef)
34 store float %rsq, float addrspace(1)* %out, align 4
38 attributes #0 = { nounwind readnone }
39 attributes #1 = { nounwind }