diff options
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 1a52e47..24d0f42 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -1676,13 +1676,20 @@ thread_through_all_blocks (bool may_peel_loop_headers) { struct loop *loop = (*path)[0]->e->dest->loop_father; - retval |= thread_block ((*path)[0]->e->dest, false); - e->aux = NULL; - - /* This jump thread likely totally scrambled this loop. - So arrange for it to be fixed up. */ - loop->header = NULL; - loop->latch = NULL; + if (thread_block ((*path)[0]->e->dest, false)) + { + /* This jump thread likely totally scrambled this loop. + So arrange for it to be fixed up. */ + loop->header = NULL; + loop->latch = NULL; + e->aux = NULL; + } + else + { + delete_jump_thread_path (path); + e->aux = NULL; + ei_next (&ei); + } } } else |