diff options
Diffstat (limited to 'gcc/lra-constraints.cc')
| -rw-r--r-- | gcc/lra-constraints.cc | 109 |
1 files changed, 88 insertions, 21 deletions
diff --git a/gcc/lra-constraints.cc b/gcc/lra-constraints.cc index 10e3d4e..9586e56 100644 --- a/gcc/lra-constraints.cc +++ b/gcc/lra-constraints.cc @@ -6515,34 +6515,86 @@ update_ebb_live_info (rtx_insn *head, rtx_insn *tail) { if (prev_bb != NULL) { - /* Update df_get_live_in (prev_bb): */ + /* Update subreg live (prev_bb): */ + bitmap subreg_all_in = df_get_subreg_live_in (prev_bb); + bitmap subreg_full_in = df_get_subreg_live_full_in (prev_bb); + bitmap subreg_partial_in = df_get_subreg_live_partial_in (prev_bb); + subregs_live *range_in = df_get_subreg_live_range_in (prev_bb); EXECUTE_IF_SET_IN_BITMAP (&check_only_regs, 0, j, bi) if (bitmap_bit_p (&live_regs, j)) - bitmap_set_bit (df_get_live_in (prev_bb), j); - else - bitmap_clear_bit (df_get_live_in (prev_bb), j); + { + bitmap_set_bit (subreg_all_in, j); + if (flag_track_subreg_liveness) + { + bitmap_set_bit (subreg_full_in, j); + if (bitmap_bit_p (subreg_partial_in, j)) + { + bitmap_clear_bit (subreg_partial_in, j); + range_in->remove_range (j); + } + } + } + else if (bitmap_bit_p (subreg_all_in, j)) + { + bitmap_clear_bit (subreg_all_in, j); + if (flag_track_subreg_liveness) + { + bitmap_clear_bit (subreg_full_in, j); + if (bitmap_bit_p (subreg_partial_in, j)) + { + bitmap_clear_bit (subreg_partial_in, j); + range_in->remove_range (j); + } + } + } } + bitmap subreg_all_out = df_get_subreg_live_out (curr_bb); if (curr_bb != last_bb) { - /* Update df_get_live_out (curr_bb): */ + /* Update subreg live (curr_bb): */ + bitmap subreg_full_out = df_get_subreg_live_full_out (curr_bb); + bitmap subreg_partial_out = df_get_subreg_live_partial_out (curr_bb); + subregs_live *range_out = df_get_subreg_live_range_out (curr_bb); EXECUTE_IF_SET_IN_BITMAP (&check_only_regs, 0, j, bi) { live_p = bitmap_bit_p (&live_regs, j); if (! live_p) FOR_EACH_EDGE (e, ei, curr_bb->succs) - if (bitmap_bit_p (df_get_live_in (e->dest), j)) + if (bitmap_bit_p (df_get_subreg_live_in (e->dest), j)) { live_p = true; break; } if (live_p) - bitmap_set_bit (df_get_live_out (curr_bb), j); - else - bitmap_clear_bit (df_get_live_out (curr_bb), j); + { + bitmap_set_bit (subreg_all_out, j); + if (flag_track_subreg_liveness) + { + bitmap_set_bit (subreg_full_out, j); + if (bitmap_bit_p (subreg_partial_out, j)) + { + bitmap_clear_bit (subreg_partial_out, j); + range_out->remove_range (j); + } + } + } + else if (bitmap_bit_p (subreg_all_out, j)) + { + bitmap_clear_bit (subreg_all_out, j); + if (flag_track_subreg_liveness) + { + bitmap_clear_bit (subreg_full_out, j); + if (bitmap_bit_p (subreg_partial_out, j)) + { + bitmap_clear_bit (subreg_partial_out, j); + range_out->remove_range (j); + } + } + } } } prev_bb = curr_bb; - bitmap_and (&live_regs, &check_only_regs, df_get_live_out (curr_bb)); + bitmap_and (&live_regs, &check_only_regs, subreg_all_out); } if (! NONDEBUG_INSN_P (curr_insn)) continue; @@ -6659,7 +6711,7 @@ get_live_on_other_edges (basic_block from, basic_block to, bitmap res) bitmap_clear (res); FOR_EACH_EDGE (e, ei, from->succs) if (e->dest != to) - bitmap_ior_into (res, df_get_live_in (e->dest)); + bitmap_ior_into (res, df_get_subreg_live_in (e->dest)); last = get_last_insertion_point (from); if (! JUMP_P (last)) return; @@ -6731,7 +6783,7 @@ inherit_in_ebb (rtx_insn *head, rtx_insn *tail) { /* We are at the end of BB. Add qualified living pseudos for potential splitting. */ - to_process = df_get_live_out (curr_bb); + to_process = df_get_subreg_live_out (curr_bb); if (last_processed_bb != NULL) { /* We are somewhere in the middle of EBB. */ @@ -7103,7 +7155,7 @@ inherit_in_ebb (rtx_insn *head, rtx_insn *tail) { /* We reached the beginning of the current block -- do rest of spliting in the current BB. */ - to_process = df_get_live_in (curr_bb); + to_process = df_get_subreg_live_in (curr_bb); if (BLOCK_FOR_INSN (head) != curr_bb) { /* We are somewhere in the middle of EBB. */ @@ -7180,7 +7232,7 @@ lra_inheritance (void) fprintf (lra_dump_file, "EBB"); /* Form a EBB starting with BB. */ bitmap_clear (&ebb_global_regs); - bitmap_ior_into (&ebb_global_regs, df_get_live_in (bb)); + bitmap_ior_into (&ebb_global_regs, df_get_subreg_live_in (bb)); for (;;) { if (lra_dump_file != NULL) @@ -7196,7 +7248,7 @@ lra_inheritance (void) break; bb = bb->next_bb; } - bitmap_ior_into (&ebb_global_regs, df_get_live_out (bb)); + bitmap_ior_into (&ebb_global_regs, df_get_subreg_live_out (bb)); if (lra_dump_file != NULL) fprintf (lra_dump_file, "\n"); if (inherit_in_ebb (BB_HEAD (start_bb), BB_END (bb))) @@ -7225,15 +7277,26 @@ int lra_undo_inheritance_iter; /* Fix BB live info LIVE after removing pseudos created on pass doing inheritance/split which are REMOVED_PSEUDOS. */ static void -fix_bb_live_info (bitmap live, bitmap removed_pseudos) +fix_bb_live_info (bitmap all, bitmap full, bitmap partial, + bitmap removed_pseudos) { unsigned int regno; bitmap_iterator bi; EXECUTE_IF_SET_IN_BITMAP (removed_pseudos, 0, regno, bi) - if (bitmap_clear_bit (live, regno) - && REG_P (lra_reg_info[regno].restore_rtx)) - bitmap_set_bit (live, REGNO (lra_reg_info[regno].restore_rtx)); + { + if (bitmap_clear_bit (all, regno) + && REG_P (lra_reg_info[regno].restore_rtx)) + { + bitmap_set_bit (all, REGNO (lra_reg_info[regno].restore_rtx)); + if (flag_track_subreg_liveness) + { + bitmap_clear_bit (full, regno); + bitmap_set_bit (full, REGNO (lra_reg_info[regno].restore_rtx)); + gcc_assert (!bitmap_bit_p (partial, regno)); + } + } + } } /* Return regno of the (subreg of) REG. Otherwise, return a negative @@ -7299,8 +7362,12 @@ remove_inheritance_pseudos (bitmap remove_pseudos) constraint pass. */ FOR_EACH_BB_FN (bb, cfun) { - fix_bb_live_info (df_get_live_in (bb), remove_pseudos); - fix_bb_live_info (df_get_live_out (bb), remove_pseudos); + fix_bb_live_info (df_get_subreg_live_in (bb), + df_get_subreg_live_full_in (bb), + df_get_subreg_live_partial_in (bb), remove_pseudos); + fix_bb_live_info (df_get_subreg_live_out (bb), + df_get_subreg_live_full_out (bb), + df_get_subreg_live_partial_out (bb), remove_pseudos); FOR_BB_INSNS_REVERSE (bb, curr_insn) { if (! INSN_P (curr_insn)) |