diff options
Diffstat (limited to 'gcc/tree-ssa-loop-ch.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ch.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/tree-ssa-loop-ch.c b/gcc/tree-ssa-loop-ch.c index d759de7..c6441b8 100644 --- a/gcc/tree-ssa-loop-ch.c +++ b/gcc/tree-ssa-loop-ch.c @@ -159,7 +159,7 @@ const pass_data pass_data_ch = 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ - TODO_cleanup_cfg, /* todo_flags_finish */ + 0, /* todo_flags_finish */ }; class pass_ch : public gimple_opt_pass @@ -184,6 +184,7 @@ pass_ch::execute (function *fun) basic_block *bbs, *copied_bbs; unsigned n_bbs; unsigned bbs_size; + bool changed = false; loop_optimizer_init (LOOPS_HAVE_PREHEADERS | LOOPS_HAVE_SIMPLE_LATCHES); @@ -291,6 +292,8 @@ pass_ch::execute (function *fun) are not now, since there was the loop exit condition. */ split_edge (loop_preheader_edge (loop)); split_edge (loop_latch_edge (loop)); + + changed = true; } update_ssa (TODO_update_ssa); @@ -298,7 +301,7 @@ pass_ch::execute (function *fun) free (copied_bbs); loop_optimizer_finalize (); - return 0; + return changed ? TODO_cleanup_cfg : 0; } } // anon namespace |