| Eli Friedman | 2adc5b6 | 2011-03-09 00:48:33 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| 2 | ; PR9420 |
| 3 | |
| 4 | ; Note that the crash in PR9420 test is sensitive to the ordering of |
| 5 | ; the transformations done by SimplifyCFG, so this test is likely to rot |
| 6 | ; quickly. |
| 7 | |
| 8 | define noalias i8* @func_29() nounwind { |
| 9 | ; CHECK: entry: |
| 10 | ; CHECK-NEXT: unreachable |
| 11 | entry: |
| 12 | br label %for.cond |
| 13 | |
| 14 | for.cond: ; preds = %for.inc38, %entry |
| 15 | %p_34.addr.0 = phi i16 [ 1, %entry ], [ %conv40, %for.inc38 ] |
| 16 | br label %for.cond1 |
| 17 | |
| 18 | for.cond1: ; preds = %for.inc29, %for.cond |
| 19 | %p_32.addr.0 = phi i1 [ true, %for.cond ], [ true, %for.inc29 ] |
| 20 | br i1 %p_32.addr.0, label %for.body8, label %for.inc38 |
| 21 | |
| 22 | for.body8: ; preds = %for.cond1 |
| 23 | unreachable |
| 24 | |
| 25 | for.inc29: ; preds = %for.cond17 |
| 26 | br label %for.cond1 |
| 27 | |
| 28 | for.inc38: ; preds = %for.end32 |
| 29 | %conv40 = add i16 %p_34.addr.0, 1 |
| 30 | br label %for.cond |
| 31 | } |