diff options
Diffstat (limited to 'gcc/cfgrtl.cc')
| -rw-r--r-- | gcc/cfgrtl.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/cfgrtl.cc b/gcc/cfgrtl.cc index d206c0d..310028f 100644 --- a/gcc/cfgrtl.cc +++ b/gcc/cfgrtl.cc @@ -3213,6 +3213,16 @@ purge_dead_edges (basic_block bb) && ! may_trap_p (XEXP (eqnote, 0)))) remove_note (insn, note); } + /* A tail call cannot trap either. The tailc/musttail pass could have + allowed a tail call if it could throw internally, but perform no + actual statements and then caused the exception to be thrown externally + in the hope that it is cleaned up later. If it is not, just + remove REG_EH_REGION note. While the call maybe can throw, the + current function's frame will not be there anymore when it does. */ + if (CALL_P (insn) + && SIBLING_CALL_P (insn) + && (note = find_reg_note (insn, REG_EH_REGION, NULL))) + remove_note (insn, note); /* Cleanup abnormal edges caused by exceptions or non-local gotos. */ for (ei = ei_start (bb->succs); (e = ei_safe_edge (ei)); ) |