diff options
| -rw-r--r-- | gcc/tree-ssa-threadbackward.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadbackward.cc b/gcc/tree-ssa-threadbackward.cc index 3519aca..90f5331 100644 --- a/gcc/tree-ssa-threadbackward.cc +++ b/gcc/tree-ssa-threadbackward.cc @@ -777,6 +777,15 @@ back_threader_profitability::profitable_path_p (const vec<basic_block> &m_path, "exceeds PARAM_MAX_FSM_THREAD_PATH_INSNS.\n"); return false; } + edge entry = find_edge (m_path[m_path.length () - 1], + m_path[m_path.length () - 2]); + if (probably_never_executed_edge_p (cfun, entry)) + { + if (dump_file && (dump_flags & TDF_DETAILS)) + fprintf (dump_file, " FAIL: Jump-thread path not considered: " + "path entry is probably never executed.\n"); + return false; + } } else if (!m_speed_p && n_insns > 1) { |