| Stanislav Mekhanoshin | 6c7a8d0 | 2017-08-04 06:58:42 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s |
| 2 | |
| 3 | ; GCN-LABEL: {{^}}if_with_kill: |
| 4 | ; GCN: s_and_saveexec_b64 [[SAVEEXEC:s\[[0-9:]+\]]], |
| 5 | ; GCN-NEXT: s_xor_b64 s[{{[0-9:]+}}], exec, [[SAVEEXEC]] |
| 6 | define amdgpu_ps void @if_with_kill(i32 %arg) { |
| 7 | .entry: |
| 8 | %cmp = icmp eq i32 %arg, 32 |
| 9 | br i1 %cmp, label %then, label %endif |
| 10 | |
| 11 | then: |
| Tom Stellard | a2be8f4 | 2018-04-24 21:37:57 +0000 | [diff] [blame] | 12 | tail call void @llvm.amdgcn.kill(i1 false) |
| Stanislav Mekhanoshin | 6c7a8d0 | 2017-08-04 06:58:42 +0000 | [diff] [blame] | 13 | br label %endif |
| 14 | |
| 15 | endif: |
| 16 | ret void |
| 17 | } |
| 18 | |
| 19 | ; GCN-LABEL: {{^}}if_with_loop_kill_after: |
| 20 | ; GCN: s_and_saveexec_b64 [[SAVEEXEC:s\[[0-9:]+\]]], |
| 21 | ; GCN-NEXT: s_xor_b64 s[{{[0-9:]+}}], exec, [[SAVEEXEC]] |
| 22 | define amdgpu_ps void @if_with_loop_kill_after(i32 %arg) { |
| 23 | .entry: |
| 24 | %cmp = icmp eq i32 %arg, 32 |
| 25 | br i1 %cmp, label %then, label %endif |
| 26 | |
| 27 | then: |
| 28 | %sub = sub i32 %arg, 1 |
| 29 | br label %loop |
| 30 | |
| 31 | loop: |
| 32 | %ind = phi i32 [%sub, %then], [%dec, %loop] |
| 33 | %dec = sub i32 %ind, 1 |
| 34 | %cc = icmp ne i32 %ind, 0 |
| 35 | br i1 %cc, label %loop, label %break |
| 36 | |
| 37 | break: |
| Tom Stellard | a2be8f4 | 2018-04-24 21:37:57 +0000 | [diff] [blame] | 38 | tail call void @llvm.amdgcn.kill(i1 false) |
| Stanislav Mekhanoshin | 6c7a8d0 | 2017-08-04 06:58:42 +0000 | [diff] [blame] | 39 | br label %endif |
| 40 | |
| 41 | endif: |
| 42 | ret void |
| 43 | } |
| 44 | |
| 45 | ; GCN-LABEL: {{^}}if_with_kill_inside_loop: |
| 46 | ; GCN: s_and_saveexec_b64 [[SAVEEXEC:s\[[0-9:]+\]]], |
| 47 | ; GCN-NEXT: s_xor_b64 s[{{[0-9:]+}}], exec, [[SAVEEXEC]] |
| 48 | define amdgpu_ps void @if_with_kill_inside_loop(i32 %arg) { |
| 49 | .entry: |
| 50 | %cmp = icmp eq i32 %arg, 32 |
| 51 | br i1 %cmp, label %then, label %endif |
| 52 | |
| 53 | then: |
| 54 | %sub = sub i32 %arg, 1 |
| 55 | br label %loop |
| 56 | |
| 57 | loop: |
| 58 | %ind = phi i32 [%sub, %then], [%dec, %loop] |
| 59 | %dec = sub i32 %ind, 1 |
| 60 | %cc = icmp ne i32 %ind, 0 |
| Tom Stellard | a2be8f4 | 2018-04-24 21:37:57 +0000 | [diff] [blame] | 61 | tail call void @llvm.amdgcn.kill(i1 false) |
| Stanislav Mekhanoshin | 6c7a8d0 | 2017-08-04 06:58:42 +0000 | [diff] [blame] | 62 | br i1 %cc, label %loop, label %break |
| 63 | |
| 64 | break: |
| 65 | br label %endif |
| 66 | |
| 67 | endif: |
| 68 | ret void |
| 69 | } |
| 70 | |
| Tom Stellard | a2be8f4 | 2018-04-24 21:37:57 +0000 | [diff] [blame] | 71 | declare void @llvm.amdgcn.kill(i1) #0 |
| 72 | |
| 73 | attributes #0 = { nounwind } |