diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 6b507c2..35ab576 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -2363,7 +2363,7 @@ propagate_for_debug (rtx insn, rtx last, rtx dest, rtx src, bool move) } } -/* Delete the conditional jump INSN and adjust the CFG correspondingly. +/* Delete the unconditional jump INSN and adjust the CFG correspondingly. Note that the INSN should be deleted *after* removing dead edges, so that the kept edge is the fallthrough edge for a (set (pc) (pc)) but not for a (set (pc) (label_ref FOO)). */ @@ -2372,12 +2372,13 @@ static void update_cfg_for_uncondjump (rtx insn) { basic_block bb = BLOCK_FOR_INSN (insn); + bool at_end = (BB_END (bb) == insn); - if (BB_END (bb) == insn) + if (at_end) purge_dead_edges (bb); delete_insn (insn); - if (EDGE_COUNT (bb->succs) == 1) + if (at_end && EDGE_COUNT (bb->succs) == 1) single_succ_edge (bb)->flags |= EDGE_FALLTHRU; } |