1; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
2
3declare float @llvm.amdgcn.rsq.legacy(float) #0
4
5; FUNC-LABEL: {{^}}rsq_legacy_f32:
6; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}
7define 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
10  ret void
11}
12
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
16define 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
19  ret void
20}
21
22; FUNC-LABEL: {{^}}rsq_legacy_f32_constant_100.0
23; SI: v_rsq_legacy_f32_e32 {{v[0-9]+}}, 0x42c80000
24define 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
27  ret void
28}
29
30; FUNC-LABEL: {{^}}rsq_legacy_undef_f32:
31; SI-NOT: v_rsq_legacy_f32
32define 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
35  ret void
36}
37
38attributes #0 = { nounwind readnone }
39attributes #1 = { nounwind }
40