| ; RUN: llc -mtriple=amdgcn -mcpu=tahiti -start-before=amdgpu-unify-divergent-exit-nodes -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN %s |
| ; RUN: llc -enable-no-signed-zeros-fp-math -mtriple=amdgcn -mcpu=tahiti -start-before=amdgpu-unify-divergent-exit-nodes -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN %s |
| |
| ; -------------------------------------------------------------------------------- |
| ; rcp_legacy tests |
| ; -------------------------------------------------------------------------------- |
| |
| ; GCN-LABEL: {{^}}v_fneg_rcp_legacy_f32: |
| ; GCN: {{buffer|flat}}_load_dword [[A:v[0-9]+]] |
| ; GCN: v_rcp_legacy_f32_e64 [[RESULT:v[0-9]+]], -[[A]] |
| ; GCN: {{buffer|flat}}_store_dword [[RESULT]] |
| define amdgpu_kernel void @v_fneg_rcp_legacy_f32(ptr addrspace(1) %out, ptr addrspace(1) %a.ptr) #0 { |
| %tid = call i32 @llvm.amdgcn.workitem.id.x() |
| %tid.ext = sext i32 %tid to i64 |
| %a.gep = getelementptr inbounds float, ptr addrspace(1) %a.ptr, i64 %tid.ext |
| %out.gep = getelementptr inbounds float, ptr addrspace(1) %out, i64 %tid.ext |
| %a = load volatile float, ptr addrspace(1) %a.gep |
| %rcp = call float @llvm.amdgcn.rcp.legacy(float %a) |
| %fneg = fsub float -0.000000e+00, %rcp |
| store float %fneg, ptr addrspace(1) %out.gep |
| ret void |
| } |
| |
| declare i32 @llvm.amdgcn.workitem.id.x() #1 |
| declare float @llvm.amdgcn.rcp.legacy(float) #1 |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { nounwind readnone } |
