| ; This (complex) testcase causes an assertion failure because a preheader is | |
| ; inserted for the "fail" loop, but the exit block of a loop is not updated | |
| ; to be the preheader instead of the exit loop itself. | |
| ; RUN: opt < %s -loop-simplify | |
| define i32 @re_match_2() { | |
| br label %loopentry.1 | |
| loopentry.1: ; preds = %endif.82, %0 | |
| br label %shortcirc_done.36 | |
| shortcirc_done.36: ; preds = %loopentry.1 | |
| br i1 false, label %fail, label %endif.40 | |
| endif.40: ; preds = %shortcirc_done.36 | |
| br label %loopexit.20 | |
| loopentry.20: ; preds = %endif.46 | |
| br label %loopexit.20 | |
| loopexit.20: ; preds = %loopentry.20, %endif.40 | |
| br label %loopentry.21 | |
| loopentry.21: ; preds = %no_exit.19, %loopexit.20 | |
| br i1 false, label %no_exit.19, label %loopexit.21 | |
| no_exit.19: ; preds = %loopentry.21 | |
| br i1 false, label %fail, label %loopentry.21 | |
| loopexit.21: ; preds = %loopentry.21 | |
| br label %endif.45 | |
| endif.45: ; preds = %loopexit.21 | |
| br label %cond_true.15 | |
| cond_true.15: ; preds = %endif.45 | |
| br i1 false, label %fail, label %endif.46 | |
| endif.46: ; preds = %cond_true.15 | |
| br label %loopentry.20 | |
| fail: ; preds = %loopexit.37, %cond_true.15, %no_exit.19, %shortcirc_done.36 | |
| br label %then.80 | |
| then.80: ; preds = %fail | |
| br label %endif.81 | |
| endif.81: ; preds = %then.80 | |
| br label %loopexit.37 | |
| loopexit.37: ; preds = %endif.81 | |
| br i1 false, label %fail, label %endif.82 | |
| endif.82: ; preds = %loopexit.37 | |
| br label %loopentry.1 | |
| } | |