| ; REQUIRES: asserts |
| ; RUN: opt < %s -passes='simple-loop-unswitch<nontrivial>' -disable-output |
| ; RUN: opt < %s -simple-loop-unswitch -enable-nontrivial-unswitch -disable-output |
| |
| |
| ; Make sure we don't crash due to a dangling use of %tmp2 in bb7. |
| define void @test.use_in_dead_block(i1 %arg1, i1 %arg2) { |
| bb1: |
| br label %bb2 |
| |
| bb2: ; preds = %bb4, %bb1 |
| %tmp1 = phi i64 [ 0, %bb4 ], [ 42, %bb1 ] |
| br i1 %arg1, label %bb3, label %bb6 |
| |
| bb3: ; preds = %bb2 |
| br i1 %arg2, label %bb5, label %bb4 |
| |
| bb4: ; preds = %bb3 |
| %tmp2 = add i32 1, 1 |
| br label %bb2 |
| |
| bb5: ; preds = %bb3 |
| ret void |
| |
| bb6: ; preds = %bb2 |
| %tmp3 = add i64 %tmp1, 1 |
| ret void |
| |
| bb7: ; No predecessors! |
| %tmp4 = add i32 %tmp2, 1 |
| ret void |
| } |