diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 8 |
1 files changed, 4 insertions, 4 deletions
@@ -599,7 +599,6 @@ static void invalidate_from_clobbers (rtx); static void invalidate_from_sets_and_clobbers (rtx); static rtx cse_process_notes (rtx, rtx, bool *); static void cse_extended_basic_block (struct cse_basic_block_data *); -static void count_reg_usage (rtx, int *, rtx, int); static int check_for_label_ref (rtx *, void *); extern void dump_class (struct table_elt*); static void get_cse_reg_info_1 (unsigned int regno); @@ -6692,10 +6691,11 @@ count_reg_usage (rtx x, int *counts, rtx dest, int incr) case CALL_INSN: case INSN: case JUMP_INSN: - /* We expect dest to be NULL_RTX here. If the insn may trap, + /* We expect dest to be NULL_RTX here. If the insn may throw, or if it cannot be deleted due to side-effects, mark this fact by setting DEST to pc_rtx. */ - if (insn_could_throw_p (x) || side_effects_p (PATTERN (x))) + if ((!cfun->can_delete_dead_exceptions && !insn_nothrow_p (x)) + || side_effects_p (PATTERN (x))) dest = pc_rtx; if (code == CALL_INSN) count_reg_usage (CALL_INSN_FUNCTION_USAGE (x), counts, dest, incr); @@ -6800,7 +6800,7 @@ static bool insn_live_p (rtx insn, int *counts) { int i; - if (insn_could_throw_p (insn)) + if (!cfun->can_delete_dead_exceptions && !insn_nothrow_p (insn)) return true; else if (GET_CODE (PATTERN (insn)) == SET) return set_live_p (PATTERN (insn), insn, counts); |