- if (pad_map)
- {
- /* When doing hot/cold partitioning, ensure landing pads are
- always in the same section as the EH region, .gcc_except_table
- can't express it otherwise. */
- for (cur_sec = 0; cur_sec < 2; cur_sec++)
- {
- int i, idx;
- int n = VEC_length (call_site_record,
- crtl->eh.call_site_record[cur_sec]);
- basic_block prev_bb = NULL, padbb;
-
- for (i = 0; i < n; ++i)
- {
- struct call_site_record_d *cs =
- VEC_index (call_site_record,
- crtl->eh.call_site_record[cur_sec], i);
- rtx jump, note;
-
- if (cs->landing_pad == NULL_RTX)
- continue;
- idx = CODE_LABEL_NUMBER (cs->landing_pad) - min_labelno;
- /* If the landing pad is in the correct section, nothing
- is needed. */
- if (TEST_BIT (pad_loc, idx) ^ (cur_sec == 0))
- continue;
- /* Otherwise, if we haven't seen this pad yet, we need to
- add a new label and jump to the correct section. */
- if (pad_map[idx] == NULL_RTX)
- {
- pad_map[idx] = gen_label_rtx ();
- if (prev_bb == NULL)
- for (iter = section_switch_note;
- iter; iter = PREV_INSN (iter))
- if (NOTE_INSN_BASIC_BLOCK_P (iter))
- {
- prev_bb = NOTE_BASIC_BLOCK (iter);
- break;
- }
- if (cur_sec == 0)
- {
- note = emit_label_before (pad_map[idx],
- section_switch_note);
- jump = emit_jump_insn_before (gen_jump (cs->landing_pad),
- section_switch_note);
- }
- else
- {
- jump = emit_jump_insn_after (gen_jump (cs->landing_pad),
- section_switch_note);
- note = emit_label_after (pad_map[idx],
- section_switch_note);
- }
- JUMP_LABEL (jump) = cs->landing_pad;
- add_reg_note (jump, REG_CROSSING_JUMP, NULL_RTX);
- iter = NEXT_INSN (cs->landing_pad);
- if (iter && NOTE_INSN_BASIC_BLOCK_P (iter))
- padbb = NOTE_BASIC_BLOCK (iter);
- else
- padbb = NULL;
- if (padbb && prev_bb
- && BB_PARTITION (padbb) != BB_UNPARTITIONED)
- {
- basic_block bb;
- int part
- = BB_PARTITION (padbb) == BB_COLD_PARTITION
- ? BB_HOT_PARTITION : BB_COLD_PARTITION;
- edge_iterator ei;
- edge e;
-
- bb = create_basic_block (note, jump, prev_bb);
- make_single_succ_edge (bb, padbb, EDGE_CROSSING);
- BB_SET_PARTITION (bb, part);
- for (ei = ei_start (padbb->preds);
- (e = ei_safe_edge (ei)); )
- {
- if ((e->flags & (EDGE_EH|EDGE_CROSSING))
- == (EDGE_EH|EDGE_CROSSING))
- {
- redirect_edge_succ (e, bb);
- e->flags &= ~EDGE_CROSSING;
- }
- else
- ei_next (&ei);
- }
- if (cur_sec == 0)
- prev_bb = bb;
- }
- }
- cs->landing_pad = pad_map[idx];
- }
- }
-
- sbitmap_free (pad_loc);
- XDELETEVEC (pad_map);
- }
-