| Matthias Braun | ae81c29 | 2016-03-24 21:41:38 +0000 | [diff] [blame^] | 1 | ; RUN: llc -o /dev/null %s |
| 2 | ; This testcase produces a situation with unused value numbers in subregister |
| 3 | ; liveranges that get distributed by ConnectedVNInfoEqClasses. |
| 4 | target triple = "amdgcn--" |
| 5 | |
| 6 | define spir_kernel void @hoge() { |
| 7 | bb: |
| 8 | %tmp = tail call i32 @llvm.r600.read.tidig.x() |
| 9 | br i1 undef, label %bb2, label %bb23 |
| 10 | |
| 11 | bb2: |
| 12 | br i1 undef, label %bb6, label %bb8 |
| 13 | |
| 14 | bb6: |
| 15 | %tmp7 = or i64 undef, undef |
| 16 | br label %bb8 |
| 17 | |
| 18 | bb8: |
| 19 | %tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ] |
| 20 | %tmp10 = icmp eq i32 %tmp, 0 |
| 21 | br i1 %tmp10, label %bb11, label %bb23 |
| 22 | |
| 23 | bb11: |
| 24 | br i1 undef, label %bb20, label %bb17 |
| 25 | |
| 26 | bb17: |
| 27 | br label %bb20 |
| 28 | |
| 29 | bb20: |
| 30 | %tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ] |
| 31 | %tmp22 = trunc i64 %tmp21 to i32 |
| 32 | br label %bb23 |
| 33 | |
| 34 | bb23: |
| 35 | %tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ] |
| 36 | br label %bb25 |
| 37 | |
| 38 | bb25: |
| 39 | %tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ] |
| 40 | br i1 undef, label %bb25, label %bb30 |
| 41 | |
| 42 | bb30: |
| 43 | br i1 undef, label %bb32, label %bb34 |
| 44 | |
| 45 | bb32: |
| 46 | %tmp33 = zext i32 %tmp26 to i64 |
| 47 | br label %bb34 |
| 48 | |
| 49 | bb34: |
| 50 | ret void |
| 51 | } |
| 52 | |
| 53 | declare i32 @llvm.r600.read.tidig.x() |