diff options
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.ll b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.ll new file mode 100644 index 00000000000..eeff2536b23 --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.ll @@ -0,0 +1,23 @@ +; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s +; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=FUNC %s +; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s + + +declare float @llvm.AMDGPU.rsq.clamped.f32(float) nounwind readnone + +; FUNC-LABEL: {{^}}rsq_clamped_f32: +; SI: v_rsq_clamp_f32_e32 + +; VI: v_rsq_f32_e32 [[RSQ:v[0-9]+]], {{s[0-9]+}} +; VI: v_min_f32_e32 [[MIN:v[0-9]+]], 0x7f7fffff, [[RSQ]] +; TODO: this constant should be folded: +; VI: v_mov_b32_e32 [[MINFLT:v[0-9]+]], 0xff7fffff +; VI: v_max_f32_e32 {{v[0-9]+}}, [[MIN]], [[MINFLT]] + +; EG: RECIPSQRT_CLAMPED + +define void @rsq_clamped_f32(float addrspace(1)* %out, float %src) nounwind { + %rsq_clamped = call float @llvm.AMDGPU.rsq.clamped.f32(float %src) nounwind readnone + store float %rsq_clamped, float addrspace(1)* %out, align 4 + ret void +} |
