diff options
Diffstat (limited to 'gcc/cfgrtl.c')
| -rw-r--r-- | gcc/cfgrtl.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c index 2987a506618..5d785cafb50 100644 --- a/gcc/cfgrtl.c +++ b/gcc/cfgrtl.c @@ -1819,7 +1819,7 @@ purge_dead_edges (bb) basic_block bb; { edge e, next; - rtx insn = bb->end; + rtx insn = bb->end, note; bool purged = false; if (GET_CODE (insn) == JUMP_INSN && !simplejump_p (insn)) @@ -1878,6 +1878,17 @@ purge_dead_edges (bb) return purged; } + /* If this instruction cannot trap, remove REG_EH_REGION notes. */ + if (GET_CODE (insn) == INSN + && (note = find_reg_note (insn, REG_EH_REGION, NULL))) + { + rtx eqnote; + if (! may_trap_p (PATTERN (insn)) + || ((eqnote = find_reg_equal_equiv_note (insn)) + && ! may_trap_p (XEXP (eqnote, 0)))) + remove_note (insn, note); + } + /* Cleanup abnormal edges caused by throwing insns that have been eliminated. */ if (! can_throw_internal (bb->end)) |