From 311aab0649dded5e7f9bb84dd78040871d6812d9 Mon Sep 17 00:00:00 2001 From: Vladimir Makarov Date: Tue, 6 Jan 2009 03:50:07 +0000 Subject: re PR rtl-optimization/38583 (huge test case makes register allocator run out of memory while constructing the conflict graph) 2009-01-05 Vladimir Makarov PR rtl-optimization/38583 * params.h (IRA_MAX_CONFLICT_TABLE_SIZE): New macro. * params.def (ira-max-conflict-table-size): New. * doc/invoke.texi (ira-max-conflict-table-size): Decribe. * ira.h (ira_conflicts_p): New external definition. * ira-conflicts.c (build_conflict_bit_table): Do not build too big table. Report this. Return result of building. (ira_build_conflicts): Use ira_conflicts_p. Check result of building conflict table. * ira-color.c (fast_allocation): Use num instead of ira_allocnos_num. (ira_color): Use ira_conflicts_p. * global.c: Include ira.h. (pseudo_for_reload_consideration_p, build_insn_chain): Use ira_conflicts_p. * Makefile.in (global.o): Add ira.h. * ira-build.c (mark_all_loops_for_removal, propagate_some_info_from_allocno): New. (remove_unnecessary_allocnos): Call propagate_some_info_from_allocno. (remove_low_level_allocnos): New. (remove_unnecessary_regions): Add parameter. Call mark_all_loops_for_removal and remove_low_level_allocnos. Pass parameter to remove_unnecessary_regions. (ira_build): Remove all regions but root if the conflict table was not built. Update conflict hard regs for allocnos crossing calls. * ira.c (ira_conflicts_p): New global. (ira): Define and use ira_conflicts_p. * reload1.c (compute_use_by_pseudos, reload, count_pseudo, count_spilled_pseudo, find_reg, alter_reg, finish_spills, emit_input_reload_insns, delete_output_reload): Use ira_conflicts_p. From-SVN: r143112 --- gcc/ira.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/ira.h') diff --git a/gcc/ira.h b/gcc/ira.h index 5f964c4..165274d 100644 --- a/gcc/ira.h +++ b/gcc/ira.h @@ -20,6 +20,10 @@ You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see . */ +/* True if we have allocno conflicts. It is false for non-optimized + mode or when the conflict table is too big. */ +extern bool ira_conflicts_p; + extern void ira_init_once (void); extern void ira_init (void); extern void ira_finish_once (void); -- cgit v1.1