diff options
Diffstat (limited to 'gcc/gimple-ssa-isolate-paths.c')
| -rw-r--r-- | gcc/gimple-ssa-isolate-paths.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/gimple-ssa-isolate-paths.c b/gcc/gimple-ssa-isolate-paths.c index 7babe092362..7ad39b4e09b 100644 --- a/gcc/gimple-ssa-isolate-paths.c +++ b/gcc/gimple-ssa-isolate-paths.c @@ -137,6 +137,15 @@ isolate_path (basic_block bb, basic_block duplicate, gimple_stmt_iterator si, si2; edge_iterator ei; edge e2; + bool impossible = true; + + for (si = gsi_start_bb (bb); gsi_stmt (si) != stmt; gsi_next (&si)) + if (stmt_can_terminate_bb_p (gsi_stmt (si))) + { + impossible = false; + break; + } + force_edge_cold (e, impossible); /* First duplicate BB if we have not done so already and remove all the duplicate's outgoing edges as duplicate is going to unconditionally @@ -145,10 +154,14 @@ isolate_path (basic_block bb, basic_block duplicate, if (!duplicate) { duplicate = duplicate_block (bb, NULL, NULL); + bb->frequency = 0; + bb->count = profile_count::zero (); if (!ret_zero) for (ei = ei_start (duplicate->succs); (e2 = ei_safe_edge (ei)); ) remove_edge (e2); } + bb->frequency += EDGE_FREQUENCY (e); + bb->count += e->count; /* Complete the isolation step by redirecting E to reach DUPLICATE. */ e2 = redirect_edge_and_branch (e, duplicate); |