| Marek Olsak | 2114fc3 | 2017-10-24 10:26:59 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=CHECK %s |
| 2 | |
| 3 | ;CHECK-LABEL: {{^}}ret: |
| 4 | ;CHECK: v_cmp_eq_u32_e32 [[CMP:[^,]+]], v0, v1 |
| 5 | ;CHECK: s_wqm_b64 [[WQM:[^,]+]], [[CMP]] |
| 6 | ;CHECK: v_cndmask_b32_e64 v0, 0, 1.0, [[WQM]] |
| 7 | define amdgpu_ps float @ret(i32 %v0, i32 %v1) #1 { |
| 8 | main_body: |
| 9 | %c = icmp eq i32 %v0, %v1 |
| 10 | %w = call i1 @llvm.amdgcn.wqm.vote(i1 %c) |
| 11 | %r = select i1 %w, float 1.0, float 0.0 |
| 12 | ret float %r |
| 13 | } |
| 14 | |
| 15 | ;CHECK-LABEL: {{^}}true: |
| 16 | ;CHECK: s_wqm_b64 |
| 17 | define amdgpu_ps float @true() #1 { |
| 18 | main_body: |
| 19 | %w = call i1 @llvm.amdgcn.wqm.vote(i1 true) |
| 20 | %r = select i1 %w, float 1.0, float 0.0 |
| 21 | ret float %r |
| 22 | } |
| 23 | |
| 24 | ;CHECK-LABEL: {{^}}false: |
| 25 | ;CHECK: s_wqm_b64 |
| 26 | define amdgpu_ps float @false() #1 { |
| 27 | main_body: |
| 28 | %w = call i1 @llvm.amdgcn.wqm.vote(i1 false) |
| 29 | %r = select i1 %w, float 1.0, float 0.0 |
| 30 | ret float %r |
| 31 | } |
| 32 | |
| 33 | ;CHECK-LABEL: {{^}}kill: |
| 34 | ;CHECK: v_cmp_eq_u32_e32 [[CMP:[^,]+]], v0, v1 |
| 35 | ;CHECK: s_wqm_b64 [[WQM:[^,]+]], [[CMP]] |
| 36 | ;FIXME: This could just be: s_and_b64 exec, exec, [[WQM]] |
| 37 | ;CHECK: v_cndmask_b32_e64 [[KILL:[^,]+]], -1.0, 1.0, [[WQM]] |
| 38 | ;CHECK: v_cmpx_le_f32_e32 {{[^,]+}}, 0, [[KILL]] |
| 39 | ;CHECK: s_endpgm |
| 40 | define amdgpu_ps void @kill(i32 %v0, i32 %v1) #1 { |
| 41 | main_body: |
| 42 | %c = icmp eq i32 %v0, %v1 |
| 43 | %w = call i1 @llvm.amdgcn.wqm.vote(i1 %c) |
| 44 | %r = select i1 %w, float 1.0, float -1.0 |
| 45 | call void @llvm.AMDGPU.kill(float %r) |
| 46 | ret void |
| 47 | } |
| 48 | |
| 49 | declare void @llvm.AMDGPU.kill(float) #1 |
| 50 | declare i1 @llvm.amdgcn.wqm.vote(i1) |
| 51 | |
| 52 | attributes #1 = { nounwind } |