| ; RUN: llc -mtriple=amdgcn-- -verify-machineinstrs -o /dev/null %s |
| ; This testcase produces a situation with unused value numbers in subregister |
| ; liveranges that get distributed by ConnectedVNInfoEqClasses. |
| |
| define amdgpu_kernel void @hoge() { |
| bb: |
| %tmp = tail call i32 @llvm.amdgcn.workitem.id.x() |
| br i1 undef, label %bb2, label %bb23 |
| |
| bb2: |
| br i1 undef, label %bb6, label %bb8 |
| |
| bb6: |
| %tmp7 = or i64 undef, undef |
| br label %bb8 |
| |
| bb8: |
| %tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ] |
| %tmp10 = icmp eq i32 %tmp, 0 |
| br i1 %tmp10, label %bb11, label %bb23 |
| |
| bb11: |
| br i1 undef, label %bb20, label %bb17 |
| |
| bb17: |
| br label %bb20 |
| |
| bb20: |
| %tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ] |
| %tmp22 = trunc i64 %tmp21 to i32 |
| br label %bb23 |
| |
| bb23: |
| %tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ] |
| br label %bb25 |
| |
| bb25: |
| %tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ] |
| br i1 undef, label %bb25, label %bb30 |
| |
| bb30: |
| br i1 undef, label %bb32, label %bb34 |
| |
| bb32: |
| %tmp33 = zext i32 %tmp26 to i64 |
| br label %bb34 |
| |
| bb34: |
| ret void |
| } |
| |
| declare i32 @llvm.amdgcn.workitem.id.x() |
