| ; REQUIRES: asserts |
| ; RUN: opt -regions -analyze -enable-new-pm=0 < %s | FileCheck %s |
| ; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s |
| |
| ; While working on improvements to region info analysis, this test |
| ; case caused an incorrect region bb2 => bb3 to be detected. |
| |
| define internal i8 @main_read() nounwind { |
| bb: |
| br label %bb1 |
| |
| bb1: |
| br i1 true, label %bb2, label %bb7 |
| |
| bb2: |
| br i1 true, label %bb4, label %bb3 |
| |
| bb3: |
| br i1 true, label %bb4, label %bb8 |
| |
| bb4: |
| br label %bb5 |
| |
| bb5: |
| br label %bb6 |
| |
| bb6: |
| br label %bb1 |
| |
| bb7: |
| br label %bb5 |
| |
| bb8: |
| ret i8 1 |
| } |
| |
| ; CHECK: [0] bb => <Function Return> |
| ; CHECK-NEXT: [1] bb1 => bb8 |
| ; CHECK-NEXT: End region tree |
