| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame^] | 1 | ; THis testcase caused an assertion failure because a PHI node did not have |
| 2 | ; entries for it's postdominator. But I think this can only happen when the |
| 3 | ; PHI node is dead, so we just avoid patching up dead PHI nodes. |
| 4 | |
| 5 | ; RUN: llvm-upgrade < %s | llvm-as | opt -adce |
| 6 | |
| 7 | target endian = little |
| 8 | target pointersize = 32 |
| 9 | |
| 10 | implementation ; Functions: |
| 11 | |
| 12 | void %dead_test8() { |
| 13 | entry: ; No predecessors! |
| 14 | br label %loopentry |
| 15 | |
| 16 | loopentry: ; preds = %entry, %endif |
| 17 | %k.1 = phi int [ %k.0, %endif ], [ 0, %entry ] ; <int> [#uses=1] |
| 18 | br bool false, label %no_exit, label %return |
| 19 | |
| 20 | no_exit: ; preds = %loopentry |
| 21 | br bool false, label %then, label %else |
| 22 | |
| 23 | then: ; preds = %no_exit |
| 24 | br label %endif |
| 25 | |
| 26 | else: ; preds = %no_exit |
| 27 | %dec = add int %k.1, -1 ; <int> [#uses=1] |
| 28 | br label %endif |
| 29 | |
| 30 | endif: ; preds = %else, %then |
| 31 | %k.0 = phi int [ %dec, %else ], [ 0, %then ] ; <int> [#uses=1] |
| 32 | store int 2, int* null |
| 33 | br label %loopentry |
| 34 | |
| 35 | return: ; preds = %loopentry |
| 36 | ret void |
| 37 | } |