| Matt Arsenault | 2d47310 | 2018-07-05 17:01:29 +0000 | [diff] [blame] | 1 | ; RUN: llc -mtriple=amdgcn-- -verify-machineinstrs -o /dev/null %s |
| Matthias Braun | ae81c29 | 2016-03-24 21:41:38 +0000 | [diff] [blame] | 2 | ; This testcase produces a situation with unused value numbers in subregister |
| 3 | ; liveranges that get distributed by ConnectedVNInfoEqClasses. |
| Matthias Braun | ae81c29 | 2016-03-24 21:41:38 +0000 | [diff] [blame] | 4 | |
| Matt Arsenault | 2d47310 | 2018-07-05 17:01:29 +0000 | [diff] [blame] | 5 | define amdgpu_kernel void @hoge() { |
| Matthias Braun | ae81c29 | 2016-03-24 21:41:38 +0000 | [diff] [blame] | 6 | bb: |
| Matt Arsenault | a532927 | 2017-05-17 21:38:21 +0000 | [diff] [blame] | 7 | %tmp = tail call i32 @llvm.amdgcn.workitem.id.x() |
| Matthias Braun | ae81c29 | 2016-03-24 21:41:38 +0000 | [diff] [blame] | 8 | br i1 undef, label %bb2, label %bb23 |
| 9 | |
| 10 | bb2: |
| 11 | br i1 undef, label %bb6, label %bb8 |
| 12 | |
| 13 | bb6: |
| 14 | %tmp7 = or i64 undef, undef |
| 15 | br label %bb8 |
| 16 | |
| 17 | bb8: |
| 18 | %tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ] |
| 19 | %tmp10 = icmp eq i32 %tmp, 0 |
| 20 | br i1 %tmp10, label %bb11, label %bb23 |
| 21 | |
| 22 | bb11: |
| 23 | br i1 undef, label %bb20, label %bb17 |
| 24 | |
| 25 | bb17: |
| 26 | br label %bb20 |
| 27 | |
| 28 | bb20: |
| 29 | %tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ] |
| 30 | %tmp22 = trunc i64 %tmp21 to i32 |
| 31 | br label %bb23 |
| 32 | |
| 33 | bb23: |
| 34 | %tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ] |
| 35 | br label %bb25 |
| 36 | |
| 37 | bb25: |
| 38 | %tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ] |
| 39 | br i1 undef, label %bb25, label %bb30 |
| 40 | |
| 41 | bb30: |
| 42 | br i1 undef, label %bb32, label %bb34 |
| 43 | |
| 44 | bb32: |
| 45 | %tmp33 = zext i32 %tmp26 to i64 |
| 46 | br label %bb34 |
| 47 | |
| 48 | bb34: |
| 49 | ret void |
| 50 | } |
| 51 | |
| Matt Arsenault | a532927 | 2017-05-17 21:38:21 +0000 | [diff] [blame] | 52 | declare i32 @llvm.amdgcn.workitem.id.x() |