diff options
Diffstat (limited to 'gcc/sel-sched.c')
| -rw-r--r-- | gcc/sel-sched.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c index fb9386f..46c66b4 100644 --- a/gcc/sel-sched.c +++ b/gcc/sel-sched.c @@ -6424,10 +6424,23 @@ code_motion_process_successors (insn_t insn, av_set_t orig_ops, res = b; /* We have simplified the control flow below this point. In this case, - the iterator becomes invalid. We need to try again. */ + the iterator becomes invalid. We need to try again. + If we have removed the insn itself, it could be only an + unconditional jump. Thus, do not rescan but break immediately -- + we have already visited the only successor block. */ + if (!BLOCK_FOR_INSN (insn)) + { + if (sched_verbose >= 6) + sel_print ("Not doing rescan: already visited the only successor" + " of block %d\n", old_index); + break; + } if (BLOCK_FOR_INSN (insn)->index != old_index || EDGE_COUNT (bb->succs) != old_succs) { + if (sched_verbose >= 6) + sel_print ("Rescan: CFG was simplified below insn %d, block %d\n", + INSN_UID (insn), BLOCK_FOR_INSN (insn)->index); insn = sel_bb_end (BLOCK_FOR_INSN (insn)); goto rescan; } |