* flow.c (mark_used_regs): Revert last change.
(life_analysis): Remove PROP_AUTOINC if running after reload.
(propagate_one_insn): PROP_AUTOINC is always off after reload.
From-SVN: r34499
* flow.c (propagate_block): Move initialization of mem_set_list ...
(init_propagate_block_info): ... here. Also track blocks with
no successors; don't scan insns if ! PROP_SCAN_DEAD_CODE.
From-SVN: r34310
* flow.c (commit_one_edge_insertion): Be prepared for a return
insn to be inserted on the edge with a normal jump.
* jump.c (jump_optimize_1): Don't look to create return isns.
* flow.c (flow_delete_insn): Don't adjust reference count of notes.
* jump.c (jump_optimize_1): Likewise.
(returnjump_p): Verify the argument is a JUMP_INSN.
* rtl.def (NOTE): Add 5th element for NOTE_INSN_DELETED_LABEL.
From-SVN: r33950
* Makefile.in (final.o): Depend on BASIC_BLOCK_H.
* final.c (final_end_function): Use app_disable. Rearrange note
handling into a switch. Emit deleted labels.
(output_asm_label): Generate label strings for deleted labels.
* flow.c (tail_recursion_label_list): New.
(find_basic_blocks_1): Set label_value_list directly. Collect list
of tail recursion labels from call_placeholders. Don't add deleted
labels to the label value list.
(cleanup_cfg): Use free_EXPR_LIST_list.
(flow_delete_insn_chain): Turn non-removable labels into notes.
(flow_delete_block): Don't disable deleting the block because of
a non-removable label.
(tail_recursion_label_p): New.
(merge_blocks_move_predecessor_nojumps): Don't disable the merge
because of a label.
(merge_blocks_move_successor_nojumps): Likewise. Also move a
jump table.
(merge_blocks): Disable a merge because of tail recursion labels.
* ifcvt.c (merge_if_block): Don't disable a merge because of a label.
Use a more accurate measure of not merging the join block.
(find_if_block): Don't disable conversion because of a label.
(find_if_case_1, find_if_case_2): Likewise.
* jump.c (duplicate_loop_exit_test): Preserve the kind of list
element when copying.
(squeeze_notes): Also leave EH notes.
(mark_jump_label): Ignore deleted labels. Use an INSN_LIST for
REG_LABEL notes.
(delete_insn): Preserve LABEL_NAME in NOTE_SOURCE_FILE when
deleting a label.
* print-rtl.c (print_rtx): Print NOTE_SOURCE_FILE for
NOTE_INSN_DELETED_LABEL. Print `[# deleted]' for a label_ref
referring to a deleted label. Convert tail handling to a switch.
* rtl.def (CODE_LABEL): Rearrange elements to be compatible with NOTE
for NOTE_INSN_DELETED_LABEL.
(NOTE): Fix commentary.
* rtl.h (REG_LABEL): Update commentary wrt INSN_LIST.
(REG_CC_SETTER, REG_CC_USER, REG_LIBCALL): Likewise.
(CODE_LABEL_NUMBER, LABEL_NAME): Update index.
(LABEL_NUSES, LABEL_REFS): Likewise.
* unroll.c (copy_loop_body): Don't copy NOTE_INSN_DELETED_LABEL.
From-SVN: r33876
* flow.c (find_basic_blocks_1): Do not delete the first
bb_note we run across.
(create_basic_block): Use reorder_insns to move an existing
bb_note to the correct place.
From-SVN: r33814
Tue May 2 00:20:30 2000 Jason Eckhardt <jle@cygnus.com>
* flow.c (verify_flow_info): Added two more sanity checks. The
first checks that the blocks are numbered consecutively. The second
checks that n_basic_blocks is actually equal to the number of
basic blocks in the insn chain.
From-SVN: r33632
* flow.c (struct propagate_block_info): Remove new_dead, new_live;
add new_set.
(propagate_one_insn): Clear it. Don't update reg_live here.
(init_propagate_block_info): Update for pbi member changes.
(free_propagate_block_info): Likewise.
(mark_set_1): Know that zero_extract, sign_extract, and
strict_low_part don't kill their argument. Alter hard subregs.
Update new_set for non-CLOBBER sets. Update reg_live.
(find_auto_inc): Update reg_live, not new_dead.
(mark_used_reg): Update reg_live, not new_live. Examine new_set
to determine if the reg in question was set this insn. Only update
reg info with PROP_REG_INFO.
From-SVN: r33478
* flow.c (update_life_info): Consider blocks null to mean the
universal set.
(calculate_global_regs_live): Likewise.
(life_analysis): Do that instead of collecting all_blocks.
From-SVN: r33469
* flow.c (mark_set_1): New arguments code and flags; update all
callers. Track regno_first and regno_last; do HARD_REGNO_NREGS
test in one place. Tidy flags tests. Don't bias REG_N_REFS by
loop_depth when optimizing for size. Do new_dead update after
emitting REG_UNUSED notes. Merge mark_set_reg code.
(mark_set_reg): Remove.
(propagate_one_insn): Use mark_set_1 for call-clobbered registers;
arrange to not emit REG_UNUSED notes.
From-SVN: r33462
* flow.c (propagate_one_insn): Break out from propagate_block.
(init_propagate_block_info): Likewise.
(free_propagate_block_info): Likewise.
(propagate_block): Use them. Export.
* basic-block.h: Declare them all.
From-SVN: r33460
* flow.c (count_basic_blocks, find_basic_blocks_1): Remove last change.
* optabs.c (emit_libcall_block): If have REG_EHG_REGION, update
region number to -1.
From-SVN: r33164
* flow.c (count_basic_blocks): Remove unused var PREV_CALL.
Never have a LIBCALL end a basic block.
(find_basic_blocks_1): Likewise.
Reorganize CALL_INSN cases.
From-SVN: r33154
* flow.c (struct propagate_block_info): Add new_dead, new_live.
(propagate_block): Initialize them. Use them in parallel instead
of one tmp variable, ie revert much of the 0408 and 0407 functional
changes, but keep the structural changes.
(mark_set_regs): Take new_dead from propagate_block_info instead.
(mark_set_1, mark_set_reg): Likewise.
(mark_used_regs): Likewise with new_live.
(mark_used_reg): Likewise. Revert 0408 change.
From-SVN: r33089
* flow.c (loop_depth): Remove.
(reg_next_use, cc0_live, mem_set_list): Replace with ...
(struct propagate_block_info): New.
(life_analysis): Don't allocate reg_next_use.
(propagate_block_delete_insn): Break out of propagate_block.
Use flow_delete_insn to unlink rather than use NOTE_INSN_DELETED.
(propagate_block_delete_libcall): Likewise.
(propagate_block): Create a propagate_block_info struct to pass
to subroutines. Allocate one not two temporary regsets. Don't
clobber memory for const calls. Look for clobbers in
CALL_INSN_FUNCTION_USAGE.
(mark_set_regs): Recognize COND_EXEC.
(mark_set_reg): Break out of mark_set_1.
(mark_used_reg): Break out of mark_used_regs.
(mark_used_regs): Recognize COND_EXEC.
(insn_dead_p): Use propagate_block_info struct.
(libcall_dead_p, invalidate_mems_from_autoinc): Likewise.
(find_auto_inc, try_pre_increment_1): Likewise.
(print_rtl_with_bb): Dump regs live at end too.
(count_reg_sets_1): Pass in loop_depth.
(count_reg_sets, count_reg_references): Likewise.
(recompute_reg_usage): Provide it.
From-SVN: r33012
* basic-block.h (merge_blocks_nomove): Declare.
(tidy_fallthru_edge): Declare.
* flow.c (merge_blocks_nomove): Document as merging into previous
blocks. Remove cruft from between blocks; remove all edges out of A.
(tidy_fallthru_edge): Export.
From-SVN: r32994
* rtl.h (INSN_P): New macro.
(successor_phi_fn): New typedef.
(for_each_successor_phi): New prototype.
(in_ssa_form): New variable.
(PHI_NODE_P): Likewise.
* flow.c (calculate_global_regs_live): Add to new_live_at_end from
phi nodes in successors.
(mark_used_regs): Add PHI case.
(set_phi_alternative_reg): New function.
(life_analysis): Assert that dead code elimination is not selected
when in SSA form.
* toplev.c (to_ssa_time): New variable.
(from_ssa_time): Likewise.
(compile_file): Zero to_ssa_time and from_ssa_time.
Print time to convert to and from SSA.
(rest_of_compilation): Time convert_to_ssa and convert_from_ssa.
(print_time): Compute percent fraction as integer.
* ssa.c (PHI_NODE_P): Moved to rtl.h.
(convert_to_ssa): Check if we're already in SSA.
Don't eliminate dead code in life_analysis.
Rerun flow and life analysis at bottom.
(eliminate_phi): Use canonical regnos when adding nodes.
(mark_reg_in_phi): New function.
(mark_phi_and_copy_regs): Likewise.
(convert_from_ssa): Rerun life analysis at top.
Use coalesced partition.
Check for removing a phi node at the end of the block.
(compute_coalesced_reg_partition): New function.
(coalesce_regs_in_copies): Likewise.
(coalesce_reg_in_phi): Likewise.
(coalesce_regs_in_sucessor_phi_nodes): Likewise.
(for_each_successor_phi): Likewise.
(rename_context): New struct.
(rename_block): Use a rename_context with rename_insn_1. When
renaming sets of a subreg, emit a copy of the entire reg first.
(rename_insn_1): Treat data as a rename_context *. Save current
insn in set_data.
(rename_set_data): Add field set_insn.
* Makefile.in (HASHTAB_H): Move up in file.
(OBSTACK_H): New macro.
(collect2.o): Use OBSTACK_H in dependencies.
(sdbout.o): Likewise.
(emit-rtl.o): Likewise.
(simplify-rtx.o): Likewise.
(fix-header.o): Likewise.
(OBJS): Add conflict.o.
(conflict.o): New rule.
* basic-block.h: Include partition.h.
(conflict_graph): New typedef.
(conflict_graph_enum_fn): Likewise.
(conflict_graph_new): New prototype.
(conflict_graph_delete): Likewise.
(conflict_graph_add): Likewise.
(conflict_graph_conflict_p): Likewise.
(conflict_graph_enum): Likewise.
(conflict_graph_merge_regs): Likewise.
(conflict_graph_print): Likewise.
(conflict_graph_compute): Likewise.
* conflict.c: New file.
From-SVN: r32979
modify sizes to be unsigned and use HOST_WIDE_INT.
* alias.c (reg_known_value_size): Now unsigned.
* c-typeck.c (build_unary_op, case ADDR_EXPR): Use byte_position.
(really_start_incremental_init): Use bitsize_zero_node.
(push_init_level, pop_init_level, output_init_element): Likewise.
Use bitsize_unit_node and bitsize_one_node.
(output_pending_init_elements, process_init_element): Likewise.
* combine.c (combine_max_regno, reg_sign_bit_copies): Now unsigned.
(make_extraction): Position and length HOST_WIDE_INT and unsigned
HOST_WIDE_INT, respectively.
(get_pos_from_mask): Passed in value is unsigned HOST_WIDE_INT.
(num_sign_bit_copies): Returns unsigned.
BITWIDTH now unsigned; rework arithmetic.
Remove recursive call from arg to MAX.
(combine_instructions, init_reg_last_arrays): NREGS now unsigned.
(setup_incoming_promotions, can_combine_p, try_combine, simplify_set):
REGNO now unsigned.
(set_nonzero_bit_and_sign_copies): NUM now unsigned.
(find_split_point, expand_compound_operation, make_extraction): LEN
now unsigned HOST_WIDE_INT, POS now HOST_WIDE_INT.
(make_field_assignment): Likewise.
(combine_simplify_rtx): Add cast.
(expand_compound_operation): MODEWIDTH now unsigned; rework arithmetic.
(force_to_mode): WIDTH now unsigned; add cast.
(if_then_else_cond): SIZE now unsigned.
(nonzero_bits): MODE_WIDTH, RESULT_WIDTH, and WIDTH now unsigned.
(extended_count): Now returns unsigned.
(simplify_shift_const): COUNT unsigned; arg is now INPUT_COUNT.
Add SIGNED_COUNT variable; MODE_WORDS and FIRST_COUNT now unsigned.
(simplify_comparison): MODE_WIDTH now unsigned.
(update_table_tick): REGNO and ENDREGNO now unsigned; new var R.
(mark_used_regs_combine): Likewise; rework arithmetic.
(record_value_for_reg): REGNO, ENDREGNO, and I now unsigned.
(record_dead_and_set_regs, reg_dead_at_p, distribute_notes): Likewise.
(record_promoted_value): REGNO now unsigned.
(get_last_value_validate): REGNO, ENDREGNO, and J now unsigned.
(get_last_value): REGNO now unsigned.
(use_crosses_set_p): REGNO and ENDREGNO now unsigned.
(reg_dead_regno, reg_dead_endregno): Now unsigned.
(remove_death): Arg REGNO now unsigned.
(move_deaths): REGNO, DEADREGNO, DEADEND, OUREND, and I now unsigned.
(reg_bitfield_target_p): REGNO, REGNO, ENDREGNO, and ENDTREGNO
now unsigned.
* convert.c (convert_to_integer): INPREC and OUTPREC now unsigned.
* cse.c (struct qty_table_elem): FIRST_REG and LAST_REG now unsigned.
(struct cse_reg_info): REGNO now unsigned.
(cached_regno): Now unsigned.
(REGNO_QTY_VALID_P): Add cast.
(make_new_qty, make_regs_eqv, delete_reg_eqiv): Regno args unsigned.
(remove_invalid_regs): Likewise.
(remove_invalid_subreg_refs): Likewise; arg WORD also unsigned
as are variables END and I.
(get_cse_reg_info, insert): Likewise.
(mention_regs, invalidate_for_call): REGNO, ENDREGNO, and I unsigned.
(canon_hash): Likewise.
(insert_regs, lookup_for_remove): REGNO now unsigned.
(invalidate): REGNO, ENDREGNO, TREGNO, and TENDREGNO now unsigned.
New variable RN.
* dbxout.c (dbxout_parms, dbxout_reg_parms): Don't check for REGNO < 0.
* dwarf2out.c (dwarf2ou_frame_debug_expr): Remove cast.
* emit-rtl.c (subreg_realpart_p): Add cast.
(operand_subword): Arg I is now unsigned as is var PARTWORDS.
(operand_subword_force): Arg I is now unsigned.
* except.c (eh_regs): Variable I is now unsigned.
* explow.c (hard_function_value): BYTES is unsigned HOST_WIDE_INT.
* expmed.c (store_fixed_bit_field): Position is HOST_WIDE_INT;
length is unsigned HOST_WIDE_INT; likewise for internal variables.
(store_split_bit_field, extract_fixed_bit_field): Likewise.
(extract_split_bit_field, store_bit_field, extract_bit_field):
Likewise.
* expr.c (store_constructor_fields, store_constructor, store_field):
Positions are HOST_WIDE_INT and lengths are unsigned HOST_WIDE_INT.
(expand_assignment, expand_expr, expand_expr_unaligned): Likewise.
(do_jump): Likewise.
(move_by_pieces, move_by_pieces_ninsns, clear_by_pieces):
MAX_SIZE is now unsigned.
(emit_group_load): BYTEPOS is HOST_WIDE_INT; BYTELEN is unsigned.
(emit_group_store): Likewise.
(emit_move_insn): I now unsigned.
(store_constructor): Use host_integerp, tree_low_cst, and
bitsize_unit_node.
(get_inner_reference): Return bitpos and bitsize as HOST_WIDE_INT.
Rework all calculations to use trees and new fields.
* expr.h (promoted_input_arg): Regno now unsigned.
(store_bit_field, extract_bit_field): Adjust types of pos and size.
(mark_seen_cases): Arg is HOST_WIDE_INT.
* flow.c (verify_wide_reg_1): REGNO now unsigned.
* fold-const.c (decode_field_reference): Size and pos HOST_WIDE_INT;
precisions and alignments are unsigned.
(optimize_bit_field_compare, fold_truthop): Likewise.
(int_const_binop): Adjust threshold for size_int_type_wide call.
(fold_convert): Likewise.
(size_int_type_wide): Make table larger and fix thinko that only
had half of table used.
(all_ones_mask_p, fold): Precisions are unsigned.
* function.c (put_reg_info_stack): REGNO is unsigned.
(instantiate_decl): Size is HOST_WIDE_INT.
(instantiate_virtual_regs): I is unsigned.
(assign_parms): REGNO, REGNOI, and REGNOR are unsigned.
(promoted_input_arg): REGNO is unsigned.
* function.h (struct function): x_max_parm_reg is now unsigned.
* gcse.c (max_gcse_regno): Now unsigned.
(struct null_pointer_info): min_reg and max_reg now unsigned.
(lookup_set, next_set): REGNO arg now unsigned.
(compute_hash_table): REGNO and I now unsigned.
(handle_avail_expr): regnum_for_replacing now unsigned.
(cprop_insn): REGNO now unsigned.
(delete_null_pointer_checks_1): BLOCK_REG now pointer to unsigned.
* ggc-common.c (ggc_mark_tree_children, case FIELD_DECL): New case.
* global.c (set_preference): SRC_REGNO, DEST_REGNO, and I now unsigned.
* hard-reg-set.h (reg_class_size): Now unsigned.
* integrate.c (mark_stores): LAST_REG and I now unsigned; new UREGNO.
* jump.c (mark_modified_reg): I now unsigned; add cast.
(rtx_equal_for_thread_p): Add cast.
* loop.c (max_reg_before_loop): Now unsigned.
(struct_movable): REGNO now unsigned.
(try_copy_prop): REGNO arg unsigned.
(regs_match_p): XN and YN now unsigned.
(consec_sets_invariant_p, maybe_eliminate_biv): REGNO now unsigned.
(strength_reduce): Likewise; NREGS also unsigned.
(first_increment_giv, last_increment_giv unsigned): Now unsigned.
* loop.h (struct iv_class): REGNO now unsigned.
(max_reg_before_loop, first_increment_giv, last_increment_giv):
Now unsigned.
* machmode.h (mode_size, mode_unit_size): Now unsigned.
(mode_for_size, smallest_mode_for_size): Pass size as unsigned.
* optabs.c (expand_binop): I and NWORDS now unsigned.
(expand_unop): I now unsigned.
* print-tree.c (print_node): Don't print DECL_FIELD_BITPOS, but do
print DECL_FIELD_OFFSET and DECL_FIELD_BIT_OFFSET.
* real.c (significand_size): Now returns unsigned.
* real.h (significand_size): Likewise.
* regclass.c (reg_class_size): Now unsigned.
(choose_hard_reg_mode): Both operands now unsigned.
(record_reg_classes): REGNO and NR now unsigned.
(reg_scan): NREGS now unsigned.
(reg_scan_update): old_max_regno now unsigned.
(reg_scan_mark_refs): Arg MIN_REGNO and var REGNO now unsigned.
* reload.c (find_valid_class): BEST_SIZE now unsigned.
(find_dummy_reload): REGNO, NWORDS, and I now unsigned.
(hard_reg_set_here_p): Args BEG_REGNO and END_REGNO now unsigned.
Likewise for variable R.
(refers_to_regno_for_reload_p): Args REGNO and END_REGNO now unsigned,
as are variables INNER_REGNO and INNER_ENDREGNO; add new variable R.
(find_equiv_reg): Add casts.
(regno_clobbered_p): Arg REGNO now unsigned.
* reload.h (struct reload): NREGS now unsigned.
(refers_to_regno_for_reload_p): Regno args are unsigned.
(regno_clobbered_p): Likewise.
* reload1.c (reg_max_ref_width, spill_stack_slot_width): Now unsigned.
(compute_use_by_pseudos): REGNO now unsigned.
(find_reg): I and J now unsigned, new variable K, and change loop
variables accordingly; THIS_NREGS now unsigned.
(alter_reg): INHERENT_SIZE and TOTAL_SIZE now unsigned.
(spill_hard_reg): REGNO arg now unsigned; add casts.
(forget_old_reloads_1): REGNO, NR, and I now unsigned.
(mark_reload_reg_in_use): Arg REGNO and vars NREGS and I now unsigned.
(clear_reload_reg_in_use): Arg REGNO and vars NREGS, START_REGNO,
END_REGNO, CONFLICT_START, and CONFLICT_END now unsigned.
(reload_reg_free_p, reload_reg_reaches_end_p): Arg REGNO now unsigned.
(choose_reload_regs): MAX_GROUP_SIZE now unsigned.
(emit_reload_insns): REGNO now unsigned.
(reload_cse_move2add): Add cast.
(move2add_note_store): REGNO and I now unsigned; new variable ENDREGNO
and rework loop.
* resource.c (mark_referenced_resources, mark_set_resources): New
variable R; REGNO and LAST_REGNO now unsigned.
(mark_target_live_regs): J and REGNO now unsigned.
* rtl.c (mode_size, mode_unit_size): Now unsigned.
* rtl.h (union rtunion_def): New field rtuint.
(XCUINT): New macro.
(ADDRESSOF_REGNO, REGNO, SUBREG_WORD): New XCUINT.
(operand_subword, operand_subword_force): Word number is unsigned.
(choose_hard_reg_mode): Operands are unsigned.
(refers_to-regno_p, dead_or_set_regno_p): Regno arg is unsigned.
(find_regno_note, find_regno_fusage, replace_regs): Likewise.
(regno_use_in, combine_instructions, remove_death): Likewise.
(reg_scan, reg_scan_update): Likewise.
(extended_count): Return is unsigned.
* rtlanal.c (refers_to_regno_p): Args REGNO and ENDREGNO and vars I,
INNER_REGNO, and INNER_ENDREGNO now unsigned; new variable X_REGNO.
(reg_overlap_mentioned_p): REGNO and ENDREGNO now unsigned.
(reg_set_last_first_regno, reg_set_last_last_regno): Now unsigned.
(reg_reg_last_1): FIRS and LAST now unsigned.
(dead_or_set_p): REGNO, LAST_REGNO, and I now unsigned.
(dead_or_set_regno_p): Arg TEST_REGNO and vars REGNO and ENDREGNO
now unsigned.
(find_regno_note, regno_use_in): Arg REGNO now unsigned.
(find_regno_fusage): Likewise; also var REGNOTE now unsigned.
(find_reg_fusage): Variables REGNO, END_REGNO, and I now unsigned.
(replace_regs): Arg NREGS now unsigned.
* sdbout.c (sdbout_parms, sdbout_reg_parms): Don't check REGNO < 0.
* simplify-rtx.c (simplify_unary_operation): WIDTH now unsigned.
(simplify_binary_operation): Likewise.
(cselib_invalidate_regno): Arg REGNO and variables ENDREGNO, I, and
THIS_LAST now unsigned.
(cselib_record_set): Add cast.
* ssa.c (ssa_max_reg_num): Now unsigned.
(rename_block): REGNO now unsigned.
* stmt.c (expand_return): Bit positions unsigned HOST_WIDE_INT;
sizes now unsigned.
(all_cases_count): Just return -1 not -2.
COUNT, MINVAL, and LASTVAL now HOST_WIDE_INT.
Rework tests to use trees whenever possible.
Use host_integerp and tree_low_cst.
(mark_seen_cases): COUNT arg now HOST_WIDE_INT;
Likewise variable NEXT_NODE_OFFSET; XLO now unsigned.
(check_for_full_enumeration_handing): BYTES_NEEDED, I to HOST_WIDE_INT.
* stor-layout.c (mode_for_size): SIZE arg now unsigned.
(smallest_mode_for_size): Likewise.
(layout_decl): Simplify handing of a specified DECL_SIZE_UNIT.
KNOWN_ALIGN is now an alignment, so simplify code.
Don't turn off DECL_BIT_FIELD if field is BLKmode, but not type.
(start_record_layout): Renamed from new_record_layout_info.
Update to new fields.
(debug_rli, normalize_rli, rli_size_unit_so_far, rli_size_so_far):
New functions.
(place_union_field): Renamed from layout_union_field.
Update to use new fields in rli.
(place_field): Renamed from layout_field.
Major rewrite to use new fields in rli; pass alignment to layout_decl.
(finalize_record_size): Rework to use new fields in rli and handle
union.
(compute_record_mode): Rework to simplify and to use new DECL fields.
(finalize_type_size): Make rounding more consistent.
(finish_union_layout): Deleted.
(layout_type, case VOID_TYPE): Don't set TYPE_SIZE_UNIT either.
(layout_type, case RECORD_TYPE): Call new function names.
(initialize_sizetypes): Set TYPE_IS_SIZETYPE.
(set_sizetype): Set TYPE_IS_SIZETYPE earlier.
(get_best_mode): UNIT is now unsigned; remove casts.
* tree.c (bit_position): Compute from new fields.
(byte_position, int_byte_position): New functions.
(print_type_hash_statistics): Cast to remove warning.
(build_range_type): Use host_integerp and tree_low_cst to try to hash.
(build_index_type): Likewise; make subtype of sizetype.
(build_index_2_type): Pass sizetype to build_range_type.
(build_common_tree_nodes): Use size_int and bitsize_int to
initialize nodes; add bitsize_{zero,one,unit}_node.
* tree.h (DECL_FIELD_CONTEXT): Use FIELD_DECL_CHECK.
(DECL_BIT_FIELD_TYPE, DECL_QUALIFIER, DECL_FCONTEXT): Likewise.
(DECL_PACKED, DECL_BIT_FIELD): Likewise.
(DECL_FIELD_BITPOS): Deleted.
(DECL_FIELD_OFFSET, DECL_FIELD_BIT_OFFSET): New fields.
(DECL_RESULT, DECL_SAVED_INSNS): Use FUNCTION_DECL_CHECK.
(DECL_FRAME_SIZE, DECL_FUNCTION_CODE, DECL_NO_STATIC_CHAIN): Likewise.
(DECL_INLINE, DECL_BUILT_IN_NONANSI, DECL_IS_MALLOC): Likewise.
(DECL_BUILT_IN_CLASS, DECL_STATIC_CONSTRUCTOR): Likewise.
(DECL_STATIC_DESTRUCTOR, DECL_NO_CHECK_MEMORY_USAGE): Likewise.
(DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT, DECL_NO_LIMIT_STACK) Likewise.
(DECL_ORIGINAL_TYPE, TYPE_DECL_SUPPRESS_DEBUG): Use TYPE_DECL_CHECK.
(DECL_ARG_TYPE_AS_WRITEN, DECL_ARG_TYPE): Use PARM_DECL_CHECK.
(DECL_INCOMING_RTL, DECL_TRANSPARENT_UNION): Likewise.
(DECL_ALIGN): Adjust to new field in union.
(DECL_OFFSET_ALIGN): New field.
(DECL_ERROR_ISSUED, DECL_TOO_LATE): Use LABEL_DECL_CHECK.
(DECL_IN_TEXT_SECTION): Use VAR_DECL_CHECK.
(union tree_decl): Add struct for both aligns.
(enum tree_index): Add TI_BITSIZE_{ZERO,ONE,UNIT}.
(bitsize_zero_node, bitsize_one_node, bitsize_unit_node): Added.
(struct record_layout_info): Rework fields to have offset
alignment and byte and bit position.
(start_record_layout, place_field): Renamed from old names.
(rli_size_so_far, rli_size_unit_so_far, normalize_rli): New decls.
(byte_position, int_byte_position): Likewise.
(get_inner_reference): Change types of position and length.
* unroll.c (unroll_loop): New variable R; use for some loops.
MAX_LOCAL_REGNUM and MAXREGNUM now unsigned.
(calculate_giv_inc): Arg REGNO now unsigned.
(copy_loop_body): REGNO and SRC_REGNO now unsigned.
* varasm.c (assemble_variable): Clean up handling of size using
host_integerp and tree_low_cst.
(decode_addr_const): Use byte, not bit, position.
(output_constructor): bitpos and offsets are HOST_WIDE_INT;
use tree_low_cst and int_bit_position.
* objc/objc-act.c (build_ivar_list_initializer): Use byte_position.
* ch/actions.c (check_missing_cases): BYTES_NEEDED is HOST_WIDE_INT.
* ch/typeck.c (expand_constant_to_buffer): Use int_byte_position.
(extract_constant_from_buffer): Likewise.
* cp/class.c (build_vbase_pointer_fields): layout_field now
place_field.
(get_vfield_offset): Use byte_position.
(set_rtti_entry): Set OFFSET to ssizetype zero.
(get_binfo_offset_as_int): Deleted.
(dfs_record_base_offsets): Use tree_low_cst.
(dfs_search_base_offsets): Likewise.
(layout_nonempty_base_or_field): Reflect changes in RLI format
and call byte_position.
(layout_empty_base): Convert offset to ssizetype.
(build_base_field): use rli_size_unit_so_far.
(dfs_propagate_binfo_offsets): Do computation in proper type.
(layout_virtual_bases): Pass ssizetype to propagate_binfo_offsets.
(layout_class_type): Reflect changes in RLI names and fields.
(finish_struct_1): Set DECL_FIELD_OFFSET.
* cp/dump.c (dequeue_and_dump): Call bit_position.
* cp/expr.c (cplus_expand_constant): Use byte_position.
* cp/rtti.c (expand_class_desc): Use bitsize_one_node.
* cp/typeck.c (build_component_addr): Use byte_position and don't
special case for zero offset.
* f/com.c (ffecom_tree_canonize_ptr_): Use bitsize_zero_node.
(ffecom_tree_canonize_ref_): Likewise.
* java/class.c (make_field_value): Use byte_position.
* java/expr.c (JAVA_ARRAY_LENGTH_OFFSET): Use byte_position.
(java_array_data_offset): Likewise.
* java/java-tree.h (MAYBE_CREATE_TYPE_TYPE_LANG_SPECIFIC): Add case to
bzero call.
From-SVN: r32742
* flow.c (delete_block): Delete the addr_vec along with the block.
(flow_delete_insn): Decrement LABEL_NUSES when deleting insns that
reference labels.
From-SVN: r32635
* flow.c: Move all basic block reordering code into its own file.
(create_basic_block): Externalize.
* bb-reorder.c: New file. Copy all basic block reordering code from
flow.c to this file.
(reorder_basic_blocks): Fix fencepost error in for-loop.
(reorder_basic_blocks): Remove braces from single statement for-loops.
* basic-block.h: Add declaration for create_basic_block.
* Makefile.in: Add rules for bb-reorder.o.
From-SVN: r32585
* flow.c (fixup_reorder_chain): Avoid double labels in the basic block;
end of basic block is jump_insn, not barrier; use create_basic_block
instead of creating basic block by hand.
From-SVN: r32547
* flow.c (reorder_basic_blocks): Account for barriers when writing
over NEXT_INSN (last_bb->end).
(verify_flow_info): Add check for missing barriers.
From-SVN: r32545
* partition.h: New file.
Changes in libiberty:
* Makefile.in (CFILES): Add partition.c.
(REQUIRED_OFILES): Add partition.o.
(partition.o): New rule.
* partition.c: New file.
Changes in gcc:
* Makefile.in (ssa.o): New rule.
(OBJS): Add ssa.o.
(STAGESTUFF): Add *.ssa and *.ussa.
(mostlyclean): Delete *.ssa, *.ussa, */*.ssa, */*.ussa.
* rtl.def (PHI): New RTL expression.
* rtl.h (clear_log_links): New declaration.
(convert_to_ssa): Likewise.
(convert_from_ssa): Likewise.
* flow.c (split_edge): If the entry node falls through to the
split edge's source block, split the entry edge.
(clear_log_links): New function.
* toplev.c (ssa_dump): New variable.
(flag_ssa): Likewise.
(f_options): Add "ssa".
(compile_file): Create SSA dump files.
(rest_of_compilation): Go to and from SSA if enabled.
(decide_d_option): Handle -de for SSA dump files.
* ssa.c: New file.
From-SVN: r32465
* flow.c (count_basic_blocks, find_basic_blocks_1): A rethrow
can occur outside of an EH region.
* except.c: Correct comments about rethrow behavior.
(rethrow_symbol_map): Do nothing if !flag_new_exceptions.
* flow.c (make_edges): Always call make_eh_edge for calls.
From-SVN: r32432
* bitmap.c (bitmap_operation): Avoid using -1 for index since unsigned.
* cppinit.c (new_pending_define): Add cast to avoid warning.
* expmed.c (extract_bit_field): Likewise.
* flow.c (enum reorder_skip_type): New type.
(skip_insns_between_blcok): New it.
Rework to avoid warning about possibly undefined variable.
* function.c (assign_parms): Make thisparm_boundary unsigned.
* genrecog.c (write_switch): Cast XWINT result to int.
* lcm.c: Many static fcns and vars now #ifdef OPTIMIZE_MODE_SWITCHING.
* mips-tfile.c (init_file): Make two versions of FDR intializer:
one for MIPS and one for Alpha.
(get_tag, copy_object): Add casts to avoid warnings.
* optabs.c (init_one_libfunc): Cast NAME to (char *).
* reload.c (find_reloads): Make TYPE enum reload_type.
* sbitmap.c (dump_sbitmap): J is unsigned; don't use "1L".
* unroll.c (unroll_loop): Initialize UNROLL_NUMBER.
* varasm.c (compare_constant_1): Add cast to avoid warning.
* config/alpha/alpha.c (alpha_emit_xfloating_libcall): Cast FUNC
to (char *).
(alpha_expand_unaligned_load, alpha_expand_unaligned_store):
Cast switch operand of size to int.
(alpha_expand_epilogue): Always initialize fp_offset and sa_reg.
* config/alpha/alpha.h (INITIAL_ELIMINATION_OFFSET): Add abort
in unhandled case.
From-SVN: r32060
* basic_block.h: Added prototype for reorder_basic_blocks.
* toplev.c: Changes to add -freorder-blocks and graph dump after
block reordering is done.
* flow.c (reorder_block_def): New structure for use during block
reordering.
(REORDER_BLOCK_*): New macros to access members of above structure.
(skip_insns_between_block, get_common_dest, chain_reorder_blocks,
make_reorder_chain, fixup_reorder_chain, reorder_basic_blocks): New
functions for block reordering.
Co-Authored-By: Jason Eckhardt <jle@cygnus.com>
From-SVN: r31968
* flow.c (flow_delete_insn, make_edge, remove_edge): Export.
* basic-block.h: Declare them.
* emit-rtl.h (active_insn_p): New.
(next_active_insn, prev_active_insn): Use it.
* rtl.h: Declare it.
* function.c (emit_return_into_block): New.
(thread_prologue_and_epilogue_insns): Insert return insns instead
of epilogues when possible.
* jump.c (jump_optimize_1): Remove code to insert a return insn
on the fallthru to the exit block.
From-SVN: r31826
* function.c (diddle_return_value): Rework to use a callback function.
Use current_function_return_rtx if it's been set up.
(do_clobber_return_reg, clobber_return_register): New.
(do_use_return_reg, use_return_register): New.
(expand_function_end): Use them.
* stmt.c (expand_null_return): Likewise.
* function.h: Declare them.
* flow.c (mark_regs_live_at_end): Use diddle_return_value.
(mark_reg): Change arguments as appropriate for callback.
* integrate.c (expand_inline_function): Revert 19 Jan change.
From-SVN: r31791
Fri Jan 7 19:48:04 CET 2000 Jan Hubicka <jh@suse.cz>
* sbitmap.c (sbitmap_first_set_bit, sbitmap_last_set_bit): New
function.
* sbitmap.h (sbitmap_first_set_bit, sbitmap_last_set_bit): Declare.
* basic_block.h (FLOW_LOOP_FIRST_BLOCK): New macro.
(FLOW_LOOP_LAST_BLOCK): Likewise.
2000-01-21 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* basic-block.h (struct loop): New fields 'first' and 'last'.
* flow.c (flow_loops_find): Compute loop->first and loop->last.
(flow_loops_dump): Use loop->first to check for NOTE_INSN_LOOP_BEG
and loop->last to check for NOTE_INSN_LOOP_END.
Fri Jan 28 10:57:58 2000 Jason Eckhardt <jle@cygnus.com>
* predict.c (estimate_probability): Use the new FIRST and LAST fields
of the loop descriptor rather than HEADER and LATCH. Also added
missing break statements as well making some coding style modifications
as suggested by Michael Hayes.
From-SVN: r31679
* Makefile.in (flow.o): Revert 24 Jan change.
* flow.c (mark_regs_live_at_end): Likewise. Force BLKmode
FUNCTION_VALUE result to DECL_RESULT's mode.
From-SVN: r31674
* Makefile.in (flow.o): Depend on $(EXPR_H).
* flow.c (mark_regs_live_at_end): Use hard_function_value, i.e.
duplicate the structure of diddle_return_value for keeping regs live.
From-SVN: r31620
2000-01-24 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* basic-block.h (struct loops): New field `levels'.
* flow.c (flow_loops_level_compute): Traverse all outer loops.
(flow_loop_level_compute): Initialise level to 1.
(flow_loops_find): Set loops->levels.
(flow_loops_dump): Print loops->levels.
From-SVN: r31577
* flow.c (split_edge): If we have to insert a new jump, make
sure to associate it with a basic block.
* flow.c (commit_one_edge_insertion): A block with one successor
can end in a JUMP_INSN that is not a simplejump.
From-SVN: r31380
* flow.c (propagate_block): When a prologue/epilogue insn
is marked dead, unconditionally clear libcall_is_dead and
insn_is_dead, and only dump rtl if warnings aren't being
suppressed.
From-SVN: r31327
* alias.c: Minor reformatting.
* flow.c: Likewise.
* regs.h: Likewise.
* stor-layout.c: Likewise.
* fold-const.c: Likewise.
(OVERFLOW_SUM_SIGN): Renamed from overflow_sum_sign.
(struct cb_args, const_binop_1, const_binop): Pass type of arg,
not arg itself.
(size_int_wide): Cache nodes even if garbage collecting.
(twoval_comparison_p): Reenable SAVE_EXPR case if operand
of SAVE_EXPR has no side effects.
* cse.c: Move a comment.
* tree.c: Minor reformatting.
(int_size_in_bytes): Return -1 if constant overflows.
* reload.c (combine_reloads): Do nothing if no output reload
From-SVN: r31017
* flow.c (dump_flow_info): Dump loop_depth.
(flow_loop_nodes_find): Increase loop_depth for basic block in the
body.
(flow_loop_find): Initialize the loop_depth for each basic block.
From-SVN: r30954
* basic-block.h: Remove all #defines and prototypes related to
integer lists.
(free_bb_mem, compute_preds_succs): Remove prototype.
* rtl.h (free_bb_mem): Remove prototype.
* flow.c (alloc_int_list_node); Remove function.
(add_inst_list_node, free_int_list, add_pred_succ): Likewise.
(compute_preds_succs, free_bb_mem): Likewise.
* gcse.c (gcse_main): Do not call free_bb_mem anymore.
* toplev.c (rest_of_compilation): Likewise.
* haifa-sched.c (build_control_flow): Use flow generated edge
list to build the haifa specific edge list.
(find_rgns): Use new CFG data structures instead of pred/succ lists.
(schedule_insns): Do not build pred/succ lists anymore. Instead
build the edge table.
From-SVN: r30531
* flow.c (compute_flow_dominators): Initially put all blocks on
the worklist.
* lcm.c (compute_antinout_edge, compute_available): Similarly.
* gcse.c (compute_cprop_avinout): Remove.
(compute_cprop_data): Use compute_available.
(delete_null_pointer_checks_1): Use compute_available.
From-SVN: r30484
* flow.c (compute_flow_dominators): No longer treat basic block 0
or (n_basic_blocks - 1) specially. Clear the AUX field before
starting computation of doms/pdoms. Fix initial state for pdoms.
From-SVN: r30467
* gcse.c (post_dominators): Kill.
(alloc_code_hoist_mem, free_code_hoist_mem); Kill post_dominators.
(compute_code_hoist_data): Use compute_flow_dominators. Do not
pass in a pdom array since we do not need pdoms.
* haifa-sched.c (schedule_insns): Similarly.
* flow.c (compute_dominators): Remove dead function.
(compute_flow_dominators): Do not compute doms or pdoms if the
caller does not request them. Split up loop to build doms and
pdoms. Use a worklist to compute doms and pdoms.
* basic-block.h (compute_dominators): Remove prototype.
From-SVN: r30437
* flow.c (count_or_remove_death_notes): Equate NULL with the
universal set.
* jump.c, reg-stack.c, toplev.c: Revert Oct 27 change.
* toplev.c (rest_of_compilation): Rebuild CFG immediately before
dbr_schedule.
* i386.c (pic_label_no): Delete.
(ix86_attr_length_default): Don't use single_set to peek
inside a parallel.
* recog.c (peephole2_optimize): Allow recog_next_insn to index
the first insn after bb->end.
* i386.md (push mem peeps): Scratch is live after evaluation
of the memory.
(cmp mem peep): Similarly.
From-SVN: r30269
* flow.c (propagate_block): When the last reference to a label
before an ADDR_VEC is deleted because the reference is a dead
store, delete the ADDR_VEC.
From-SVN: r30247
* basic-block.h (PROP_*): Move constants from ...
* flow.c: ... here.
(compute_bb_for_insn): Free the array before reallocating.
(update_life_info): New arg PROP_FLAGS; pass on to propagate_block.
(allocate_reg_life_data): Reset all reg variables collected by
propagate_block.
(get_block_head_tail): Don't convert from bb to block.
(get_bb_head_tail): New. Update all callers of get_block_head_tail.
(find_insn_reg_weight): Take block not bb.
(schedule_block): Don't set block num for moved insns.
(schedule_region): Don't update_life_info or find_insn_reg_weight.
(schedule_insns): Do it here instead.
* combine.c (combine_instructions): Invoke compute_bb_for_insn
before update_life_info.
* recog.c (split_all_insns, peephole2_optimize): Update for
new arg to update_life_info.
* rtlanal.c (remove_note): Cope with NULL note.
* toplev.c (rest_of_compilation): Don't invoke recompute_reg_usage
if we did sched1.
From-SVN: r30103
* Makefile.in (flow.o): Depend on TREE_H.
* basic-block.h (REG_SET_EQUAL_P): New.
(XOR_REG_SET): New.
(n_edges): Declare.
(free_regset_vector): Remove declaration.
(flow_delete_insn_chain): Declare.
(enum update_life_extent): New.
(update_life_info, count_or_remove_death_notes): Declare.
* combine.c (distribute_notes) [REG_DEAD]: Stop search at bb->head.
Verify register live at bb->global_live_at_start before adding USE.
* flow.c (HAVE_epilogue, HAVE_prologue): Provide default.
(CLEAN_ALLOCA): New.
(n_edges): New.
(PROP_*): New flags.
(find_basic_blocks_1): Use alloc_EXPR_LIST.
(clear_edges): Zero n_edges.
(make_edge): Increment n_edges.
(split_edge): Don't allocate bb->local_set. Increment n_edges.
(flow_delete_insn_chain): Export.
(delete_block): Decrement n_edges.
(merge_blocks_nomove): Likewise.
(life_analysis): Give life_analysis_1 PROP flags.
(verify_wide_reg_1, verify_wide_reg): New.
(verify_local_live_at_start): New.
(update_life_info): Rewrite to call into propogate_block.
(mark_reg): New.
(mark_regs_live_at_end): After reload, if epilogue as rtl,
always mark stack pointer. Conditionally mark PIC register.
After reload, mark call-saved registers, return regsiters.
(life_analysis_1): Accept PROP flags not remove_dead_code.
Call mark_regs_live_at_end before zeroing regs_ever_live.
Use calculate_global_regs_live. Copy global_live_at_end before
calling final propagate_block. Zero reg_next_use on exit.
(calculate_global_regs_live): New.
(allocate_bb_life_data): Don't allocate bb->local_set.
(init_regset_vector, free_regset_vector): Remove.
(propagate_block): Accept FLAGS not FINAL or REMOVE_DEAD_CODE.
Test flags before every operation. Warn if prologue/epilogue insn
would have been deleted.
(mark_set_regs, mark_set_1): Accept and use FLAGS.
Use alloc_EXPR_LIST.
(mark_used_regs): Accept and use FLAGS, not FINAL.
Remove special handling for RETURN.
(try_pre_increment): Use alloc_EXPR_LIST.
(dump_flow_info): Dump n_edges.
(unlink_insn_chain, split_hard_reg_notes): Remove.
(maybe_add_dead_note, maybe_add_dead_note_use): Remove.
(find_insn_with_note, new_insn_dead_notes): Remove.
(update_n_sets, sets_reg_or_subreg_1, sets_reg_or_subreg): Remove.
(maybe_remove_dead_notes, prepend_reg_notes): Remove.
(replace_insns): Remove.
(count_or_remove_death_notes): New.
(verify_flow_info): Abort on error after all checks.
(remove_edge): Decrement n_edges.
(remove_fake_edges): Tweek format.
* haifa-sched.c (schedule_insns): Use split_all_insns.
* output.h (update_life_info): Remove declaration.
* recog.c (split_all_insns): From the corpse of split_block_insns,
do the whole function block by block. Use update_life_info.
(recog_last_allowed_insn): New.
(recog_next_insn): Mind it.
(peephole2_optimize): Set it. Walk backwards through blocks.
Use update_life_info.
* rtl.h (update_flow_info, replace_insns): Remove declarations.
(split_all_insns): Declare.
* toplev.c (rest_of_compilation): Thread prologue before flow2.
Use split_all_insns.
* i386.md (or -1 peep2s): Disable.
From-SVN: r29877
* flow.c (make_edge): Accept an optional 2D bitmap in which
to cache edge existence. Update all callers.
(make_label_edge, make_eh_edge): Pass through the edge cache.
(make_edges): Provide the cache.
From-SVN: r29828
Tue Sep 21 14:55:11 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* flow.c (split_edge): Handle insertion on a fallthrough edge which
has the EXIT_BLOCK as a dest.
From-SVN: r29556
Tue Sep 21 14:51:23 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* flow.c (remove_edge): New function to remove an edge from the
flow graph.
(remove_fake_successors): New function to remove fake successor edges.
(remove_fake_edges): New function to remove all fake edges from the
flow graph.
(add_fake_exit_edges): New function to add fake edges from all blocks
with no successors to the exit block.
* basic-block.h (remove_fake_edges, add_fake_exit_edges): Add
prototypes for new functions.
From-SVN: r29555
* flow.c (merge_blocks_move_predecessor_nojumps): New function.
(merge-blocks_move_successor_nojumps): Likewise.
(merge_blocks): Allow merging of some blocks, even if it requires
physical movement of the blocks, but not if it requires new jumps.
From-SVN: r29519
* flow.c (insn_dead_p): Use XEXP rather than SUBREG_REG.
* haifa-sched.c (sched_analyze_1): Use XEXP rather than SUBREG_REG
and SET_DEST. Update comment.
From-SVN: r29196
1999-08-31 12:20 -0700 Zack Weinberg <zack@bitmover.com>
* rtl.h (RTL_CHECK1, RTL_CHECK2): New macros which type- and
bounds- check RTL accesses if --enable-checking.
(RTVEC_ELT): Bounds check if --enable-checking.
(XWINT, XINT, XSTR, XEXP, XVEC, XMODE, XBITMAP, XTREE,
XBBDEF): Use RTL_CHECK1/RTL_CHECK2 as appropriate.
(XVECEXP, XVECLEN): Define in terms of XVEC, RTVEC_ELT, and
GET_NUM_ELEM.
(X0WINT, X0INT, X0STR, X0EXP, X0VEC, X0MODE, X0BITMAP, X0TREE,
X0BBDEF, X0ADVFLAGS): New macros for accessing '0' slots of RTXes.
(ADDR_DIFF_VEC_FLAGS): Use X0ADVFLAGS.
(NOTE_SOURCE_FILE): Use X0STR.
(NOTE_BLOCK_NUMBER, NOTE_EH_HANDLER, LABEL_NUSES,
MEM_ALIAS_SET): Use X0INT.
(NOTE_RANGE_INFO, NOTE_LIVE_INFO, NOTE_BASIC_BLOCK,
JUMP_LABEL, LABEL_REFS, LABEL_NEXTREF, CONTAINING_INSN):
Use X0EXP.
* real.h (CONST_DOUBLE_CHAIN): Use X0EXP.
* rtl.c (copy_rtx, copy_most_rtx): Copy '0' slots with X0WINT.
(rtl_check_failed_bounds, rtl_check_failed_type1,
rtl_check_failed_type2, rtvec_check_failed_bounds): New
functions.
(fancy_abort): Fix comment.
* cse.c (canon_hash): Read CONST_DOUBLE data slots with XWINT.
(cse_insn): Decrement LABEL_NUSES for jump target before
deleting jump insn.
* emit-rtl.c (gen_rtx_CONST_DOUBLE): Use X0EXP for slot 1.
* final.c (alter_subreg): Compute regno before changing x to
REG; set REGNO(x) after changing it.
* flow.c (count_basic_blocks): Use XWINT to inspect EH_REGION
notes containing CONST_INTs.
(delete_eh_regions): Use NOTE_EH_HANDLER.
* function.c (put_reg_into_stack): Make reg a MEM before
initializing it.
(fixup_var_refs_insns): Save REG_NOTES (insn) in case we
delete insn.
(gen_mem_addressof): Make reg a MEM before initializing it.
* integrate.c (copy_rtx_and_substitute): Copy '0' slots with
X0WINT.
* local-alloc.c (update_equiv_regs): Zap REG_NOTES before
deleting an insn, not after.
(block_alloc): Only look at PATTERN(insn) if we have to, and
only if it's format class 'i'.
* loop.c (check_dbra_loop): Check bl->biv->add_val is a
CONST_INT before using its INTVAL.
* print-rtl.c (print_rtx): Use X0STR.
* regmove.c (fixup_match_1): Don't look at PATTERN of
non-class-'i' insn chain elements.
* reload.c (loc_mentioned_in_p): Take address of
in->fld[1].rtx directly.
* reload1.c (reload): Change reg to a MEM before initializing
it.
* varasm.c (mark_constant_pool): Skip CONST_DOUBLES, which
have no names.
* config/i386/i386.md (decrement_and_branch_if_zero): Fix typo.
From-SVN: r29008
* flow.c (flow_delete_insn_chain): Rename from delete_insn_chain.
(update_life_info) [REG_WAS_0]: Search the original insns rather
than the new insns for the note. Fix typos finding note_dest.
If no dest found, discard the note rather than abort.
[REG_NOALIAS]: Handle as REG_NO_CONFLICT.
(replace_insns): Remove the old insn list after update_life_info
not before.
From-SVN: r28946
1999-08-25 22:10 -0700 Zack Weinberg <zack@bitmover.com>
* system.h: Don't redefine abort or trim_filename.
* rtl.h: Define abort to fancy_abort (__FILE__, __LINE__, 0)
or fancy_abort (__FILE__, __LINE__, __FUNCTION__) depending on
whether or not __FUNCTION__ is available.
* tree.h: Duplicate rtl.h's definition of abort, for files
that don't include rtl.h. Delete all code to perform type
checking with a compiler other than GCC.
* varray.h: Delete all code to perform type checking with a
compiler other than GCC. Make VARRAY_CHECK() always evaluate
its arguments exactly once, using a statement expression.
Adjust the VARRAY_<type> accessor macros to match.
* toplev.h (fatal_insn, fatal_insn_not_found): Kill.
(_fatal_insn, _fatal_insn_not_found): New fns, take info on
caller's location. Define fatal_insn and fatal_insn_not_found
as macros that use _fatal_insn and _fatal_insn_not_found.
(fancy_abort, trim_filename): Kill prototypes.
* rtl.c (trim_filename): Move here from toplev.c.
(fancy_abort): New function.
(DIR_SEPARATOR): Provide default definition.
* tree.c (tree_check_failed, tree_class_check_failed): Go
through fancy_abort.
(tree_check, tree_class_check, cst_or_constructor_check,
expr_check): Delete.
* varray.c (varray_check_failed): New function.
* toplev.c (fatal_insn, fatal_insn_not_found): Replace with
_fatal_insn and _fatal_insn_not_found. Go through
fancy_abort.
(trim_filename, fancy_abort): Delete.
* builtins.c (expand_builtin_args_info): Report ICE with abort.
* except.c (start_catch_handler): Report ICE with error/abort
combo.
* final.c (output_operand_lossage): Likewise.
* flow.c (verify_flow_info): Likewise.
* gcc.c: Prototype fatal.
* gengenrtl.c: Undef abort after including rtl.h not system.h.
* genattr.c, genattrtab.c, genemit.c, genextract.c,
genflags.c, genopinit.c, genoutput.c, genpeep.c, genrecog.c:
Don't define fancy_abort.
From-SVN: r28889
Wed Aug 25 13:55:47 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* sbitmap.h (sbitmap_intersection_of_succs): Add prototype.
(sbitmap_intersection_of_preds, sbitmap_union_of_succs,
sbitmap_union_of_preds): Add prototypes.
* sbitmap.c (sbitmap_intersection_of_succs): New function to compute
the intersection of successors with the new flow graph structures.
(sbitmap_intersection_of_preds): New function to compute the
intersection of predecessors with the new flow graph structures.
(sbitmap_union_of_succs): New function to compute the union of
successors with the new flow graph structures.
(sbitmap_union_of_preds): New function to compute the union of
predecessors with the new flow graph structures.
* gcse.c (compute_rdm, compute_available): Use new sbitmap routines.
(expr_reaches_here_p): Use edge and basic_block structures instead
of s_preds and s_succs.
(compute_cprop_avinout): Use new sbitmap routines.
(pre_expr_reaches_here_p): Use edge and basic_block structures instead
of s_preds and s_succs.
* flow.c (compute_flow_dominators): Compute dominators using
edges and basic blocks instead of s_preds and s_succs.
From-SVN: r28866
* cse.c (cse_insn): Call never_reached_warning when a jump is
changed to be unconditional.
* flags.h: Declare warn_notreached.
* flow.c (delete_block): Call never_reached_warning when
a block is deleted.
* jump.c (delete_barrier_successors): Call never_reached_warning
when we delete everything after a BARRIER.
(never_reached_warning): New function.
* rtl.h: Declare never_reached_warning.
* toplev.c (warn_notreached): New variable.
(lang_independent_options): Set warn_notreached
when -Wunreachable-code.
(compile_file): We need line numbers for -Wunreachable-code.
Also modify documentation to suit.
From-SVN: r28747
* basic-block.h (struct edge_list): Stucture to maintain a vector
of edges.
(EDGE_INDEX_NO_EDGE, EDGE_INDEX, INDEX_EDGE_PRED_BB, INDEX_EDGE_SUCC_BB,
INDEX_EDGE, NUM_EDGES): New Macros for accessing edge list.
(create_edge_list, free_edge-List, print_edge_list, verify_edge_list):
New function prototypes.
* flow.c (create_edge_list): Function to create an edge list.
(free_edge_list): Discards memory used by an edge list.
(print_edge_list): Debug output showing an edge list.
(verify_edge_list): Internal consistency check for an edge list.
From-SVN: r28732
Tue Aug 10 10:47:42 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* except.h (eh_nesting_info): Add new structure defintion.
(init_eh_nesting_info, free_eh_nesting_info): Add function prototypes.
(reachable_handlers, update_rethrow_references): Add function
prototypes.
* rtl.h (struct rtvec_def): Update comments. REG_EH_RETHROW takes
a rethrow symbol instead of an integer exception region number.
* flow.c (Make_edges): Use new exception nesting routines to determine
which handlers are reachable from a CALL or asynchronous insn.
Dont add an edge for calls with a REG_EH_REGION of -1 to non-local
goto receivers.
(delete_eh_regions): Update rethrow labels, and don't delete
regions which are the target of a rethrow.
* except.c (struct func_eh_entry): Add rethrow_ref field, now we can
avoid overloading the SYMBOL_REF_USED flag.
(rethrow_symbol_map): Use new rethrow_ref field.
(rethrow_used): Use new rethrow_ref field.
(expand_rethrow): REG_EH_RETHROW now has a SYMBOL_REF instead
of an integer. Fix formatting.
(output_exception_table_entry): Use new rethrow_ref field.
(can_throw): Check for EH_REGION_NOTE before deciding
whether a CALL can throw or not.
(scan_region): Call rethrow_used() instead of accessing data structure.
(update_rethrow_references): New function to make sure only regions
which are still targets of a rethrow are flagged as such.
(process_nestinfo): New static function to initialize a handler
list for a specific region.
(init_eh_nesting_info): New function to allocate and initialize
the list of all EH handlers reachable from all regions.
(reachable_handlers): New function to retrieve the list of handlers
reachable from a specific region and insn.
(free_eh_nesting_info): New function to dispose of a list of
reachable handlers.
From-SVN: r28647
* flow.c (split_edge): Set JUMP_LABEL field.
(commit_one_edge_insertion): Set head correctly for insert_before.
When inserting insns, update insn block numbers if allocated.
From-SVN: r28646
Include function.h in most files. Remove most of the global variables
duplicated in function.h. Add accessor macros for them which access
current_function. Delete INLINE_HEADER rtx and related code, replace
with code using struct function to store inlining related data.
From-SVN: r28626
* jump.c (onlyjump_p): New function.
* rtl.h: Declare it.
* flow.c (delete_unreachable_blocks): Use onlyjump_p instead
of condjump_p in calling tidy_fallthru_edge and merge_blocks.
From-SVN: r28584
* flow.c (delete_unreachable_blocks): Do not call merge_blocks
or tidy_fallthru_edge if the last insn in the block is not
an unconditional jump or a simple conditional jump.
From-SVN: r28483
* flow.c (mark_regs_live_at_end, insn_dead_p,
mark_set_1, mark_used_regs): Only give FRAME_POINTER_REGNUM
and HARD_FRAME_POINTER_REGNUM special treatment if reload
hasn't run or the frame pointer is needed.
* haifa-sched.c (attach_deaths): Likewise.
* sched.c (attach_deaths): Likewise.
From-SVN: r27276
Tue Apr 27 19:50:25 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* rtl.h (REG_EH_REGION): Update comment to indicate a value of -1
indicates no throw and no nonlocal gotos.
* optabs.c (emit_libcall_block): Emit REG_EH_REGION with a value
of -1 instead of 0 to indicate a nonlocal goto won't happen either.
* flow.c (count_basic_blocks, find_basic_blocks_1): Ignore libcall
blocks, look for REG_EH_REGION note exclusively.
(make_edges): Check for REG_EH_REGION > 0 for specified handlers.
From-SVN: r26680
* flow.c (flow_delete_insn): If we delete a CODE_LABEL, also remove
it from the nonlocal_goto_handler_labels list.
* jump.c (delete_insn): Likewise.
(jump_optimize_1): Also recompute LABEL_NUSES when we are just
marking labels.
* rtl.h (remove_node_from_expr_list): Declare.
* rtlanal.c (remove_node_from_expr_list): New function.
From-SVN: r26361
* flow.c (delete_unreachable_blocks): Do not require an edge to
be marked with EDGE_FALLTHRU when tidying an edge which connects
consecutive basic blocks.
* flow.c (can_delete_label_p): Do not convert a label into a
deleted label here.
From-SVN: r26306
* flow.c (verify_flow_info): New function.
(find_basic_blocks): Call it if ENABLE_CHECKING.
(merge_blocks): Don't merge if there are non-deletable labels.
* toplev.c (fatal_insn): Allow a printf-style arg list.
* toplev.h (fatal_insn): Update prototype.
From-SVN: r26226
Jan Hubicka <hubicka@paru.cas.cz>
* flow.c (split_edge) update correctly flow graph, disable
EDGE_CRITICAL flag on the split edge, update NUSES for new label.
From-SVN: r26222
* flow.c (create_basic_block): Make sure the bb note is in the block.
(can_delete_note_p): Rename from delete_note_p.
(delete_insn_chain): Preserve undeleteable labels too.
(tidy_fallthru_edge): Use next_real_insn instead of confusing
inline code.
From-SVN: r26220
�
* flow.c (merge_blocks_nomove): For HAVE_cc0 targets, make sure
to also delete the cc0 setter when deleting a conditional branch
to the next block.
From-SVN: r25642
* flow.c (make_edges): Handle casesi that jump to default branch.
If CASE_DROPS_THROUGH, force fallthru to block after casesi.
Co-Authored-By: Richard Henderson <rth@cygnus.com>
From-SVN: r25617
* optabs.c (emit_libcall_block): Add a REG_EH_REGION reg note to all
calls within a libcall block to indicate no throws are possible.
* flow.c (find_basic_blocks, find_basic_blocks_1): Don't look for
libcall blocks. Don't add edges to exception handlers if we see
a REG_EH_REGION note with a value of 0.
(make_edges): Override active_eh_region vector if the call has a note
indicating the call does not throw.
From-SVN: r24757
* flow.c (last_mem_set): Delete variable. References removed.
(mem_set_list): New variable.
(life_analysis): Initialize and finalize alias analysis.
(propagate_block); Initialize mem_set_list. Clear for CALL_INSNs.
(insn_dead_p): For a store to memory, search the entire mem_set_list
for a match.
(mark_set_1): Kill entries on the mem_set_list for aliased writes or
changes to their addresses. Add new entries to the mem_set_list for
memory writes writes.
(mark_used_regs): Kill entries on the mem_set_list which may be
referenced by a load operation.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r24734
Tue Dec 8 15:32:56 EST 1998 Andrew MacLeod <amacleod@cygnus.com>
See ChangeLog.. These are the files that were changed:
* eh-common.h (struct eh_context): Add table_index for rethrows.
* rtl.h (enum reg_note): Add REG_EH_REGION and REG_EH_RETHROW reg notes.
* rtl.c (reg_note_name): Add strings for new reg_note enums.
* expr.h (rethrow_libfunc): New library decl.
* optabs.c (rethrow_libfunc): Initialize.
* except.h (struct eh_entry): Add new field 'rethrow_label'.
* except.c (create_rethrow_ref): New function to create a single
* flow.c (make_edges): Add different edges for rethrow calls,
* integrate.c (save_for_inline_eh_labelmap): New callback routine to
* libgcc2.c (find_exception_handler): Generalize to enable it to
* cp/except.c
* cp/exception.cc
From-SVN: r24194
x
* rtl.h (flow2_completed): Declare.
* flow.c (flow2_completed): Definition.
* toplev.c (rest_of_compilation): Set and clear flow2_completed
as necessary.
From-SVN: r23528
Wed Nov 4 19:15:37 1998 "Melissa O'Neill" <oneill@cs.sfu.ca>
* Makefile.in (libcpp.a): Ranlib libcpp.a
* cppulp.c (user_label_prefix): Initialize.
Wed Nov 4 19:07:08 1998 John Wehle (john@feith.com)
* flow.c (mark_regs_live_at_end): Mark the stack pointer as live
at a RETURN if current_function_sp_is_unchanging is set.
From-SVN: r23525
* flow.c (XNMALLOC): New macro.
(flow_int_list_blocks, basic_block_succ, basic_block_pred): New
static variables.
(add_edge, add_edge_to_label): New static functions.
(free_bb_memory): New function.
(flow_delete_insn): Delete function.
(basic_block_drops_in): Delete variable.
(find_basic_blocks): Allocate and initialize basic_block_head,
basic_block_succ. Don't allocate basic_block_drops_in.
Call free_bb_memory at the beginning.
(find_basic_blocks_1): Don't do multiple passes.
Delete code to compute basic_block_drops_in.
After calling make_edges, mark blocks reached by current block live.
Update test for unreachable live blocks.
(mark_label_ref): Delete args X, CHECKDUP. Add PRED arg. All callers
changed.
Simplify to call add_edge_to_label when a LABEL_REF is found.
(make_edges): Simplify to call add_edge_to_label instead of
mark_label_ref most of the time.
Compute here whether control drops into the next block.
(delete_unreachable_blocks): Return void. All callers changed.
Delete unreachable blocks in reverse order.
After deleting all unreachable blocks, renumber the remaining ones
and update n_basic_blocks.
(delete_block): Speed up deletion a bit.
Don't set basic_block_drops_in for deleted blocks.
(free_basic_block_vars): Don't free basic_block_drops_in.
(life_analysis_1): Update to use new edge representation.
(dump_flow_info): Delete code to print basic block info; call
dump_bb_data instead.
(compute_preds_succs): Delete code to recompute basic_block_drops_in
and uid_block_number.
Simply copy the previously computed cfg.
(dump_bb_data): New arg LIVE_INFO. All callers changed.
Print register lifetime information if LIVE_INFO is nonzero.
* basic-block.h (dump_bb_data): Adjust prototype.
* gcse.c (gcse_main): Update call to dump_bb_data.
* rtl.h (free_bb_memory): Declare.
* toplev.c (rest_of_compilation): Call free_bb_memory.
From-SVN: r23443
* final.c (cleanup_subreg_operands): New function.
(final_scan_insn): Use it.
(alter_subreg): Clear the "used" field when we turn a SUBREG into
a REG.
* reload1.c (reload): Delete CLOBBER insns and also cleanup SUBREG
operands when reload has finished.
* reload.h (cleanup_subreg_operands): Declare..
* flow.c (life_analysis_1): No longer delete CLOBBER insns after
reload. Handled in reload itself.
Should fix sh, sparc and probably other problems with post-reload life pass
and scheduling interactions.
From-SVN: r23377
* Makefile.in (flow.o): Depend on recog.h.
* cpplib.h (directive_table): Add missing initializiers.
(finclude): Change type of variable `bsize' to size_t.
* cse.c (rtx_cost): Mark parameter `outer_code' with ATTRIBUTE_UNUSED.
* dwarfout.h (dwarfout_label): Wrap prototype in macro RTX_CODE.
* fix-header.c (lookup_std_proto): Cast the result of `strlen' to
`int' when comparing against one.
(cpp_file_line_for_message): Mark parameter `pfile' with
ATTRIBUTE_UNUSED.
(cpp_fatal): Mark parameter `pfile' with ATTRIBUTE_UNUSED.
* flow.c: Include recog.h.
(sbitmap_copy): Cast arguments 1 & 2 of `bcopy' to (PTR).
* function.c (thread_prologue_and_epilogue_insns): Mark parameter
`f' with ATTRIBUTE_UNUSED.
(reposition_prologue_and_epilogue_notes): Likewise.
* genopinit.c (gen_insn): Cast argument of ctype functions to
`unsigned char'.
* haifa-sched.c: Include recog.h.
(blockage_range): Cast result of UNIT_BLOCKED macro to (int) when
comparing against one.
* libgcc2.a (__throw): Revert ATTRIBUTE_UNUSED change for now.
* mips-tfile.c (parse_end): Cast the argument of ctype function to
`unsigned char'.
(parse_ent): Likewise.
(parse_input): Likewise.
* optabs.c (init_libfuncs): Likewise.
* protoize.c (find_rightmost_formals_list): Likewise.
* recog.h (const_double_operand): Fix typo in prototype.
* tlink.c (scan_linker_output): Cast the argument of ctype
function to `unsigned char'.
* toplev.c (check_lang_option): Cast the result of `strlen' to
`int' when comparing against one.
From-SVN: r23155
* flow.c (propagate_block): Replace code that computes and uses
regs_sometimes_live with simpler code that just walks the set of
currently live registers.
From-SVN: r23148
* flow.c (life_analysis_1): Do not clobber regs_ever_live after
reload. Never perform rescans of the insn chain after reload.
(propagate_block): Do not delete insn or create new autoinc addressing
modes after reload.
* jump.c (jump_optimize): Unconditionally use the code that was
previously conditional on PRESERVE_DEATH_INFO_REGNO_P.
* reload1.c (reload): When reloading is finished, delete all
REG_DEAD and REG_UNUSED notes.
(emit_reload_insns): Delete all code that was conditional on
PRESERVE_DEATH_INFO_REGNO_P.
(no_longer_dead_regs): Delete variable.
(reload_cse_delete_death_notes): Delete function.
(reload_cse_no_longer_dead): Delete function.
(reload_cse_regs_1): Delete all code to handle deletion of death
notes.
(reload_cse_noop_set_p): Likewise.
(reload_cse_simplify_set): Likewise.
(reload_cse_simplify_operands): Likewise.
(reload_cse_move2add): Likewise.
* reorg.c (used_spill_regs): Delete declaration.
(max_label_num_after_reload): Delete declaration.
(find_dead_or_set_registers): Don't assume that spill regs are
dead at a CODE_LABEL.
* rtlanal.c (dead_or_set_regno_p): Death notes are always accurate,
even after reload.
* sched.c (sched_analyze_insn): Likewise.
(update_flow_info): Likewise.
* haifa-sched.c (sched_analyze_insn): Likewise.
(update_flow_info): Likewise.
* tm.texi (PRESERVE_DEATH_INFO_REGNO_P): Delete documentation.
* toplev.c (max_label_num_after_reload): Delete variable.
(rest_of_compilation): Don't set max_label_num_after_reload.
Call life_analysis after reload_cse_regs if optimizing.
* config/gmicro/gmicro.h: Delete comment referring to
PRESERVE_DEATH_INFO_REGNO_P.
* config/i386/i386.h: Likewise.
* config/m88k/m88k.h: Likewise.
* config/m32r/m32r.h (PRESERVE_DEATH_INFO_REGNO_P): Delete definition.
* config/sh/sh.h: Likewise.
Accurate REG_DEAD notes after reload.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r23120
* Makefile.in (sched.o): Depend on recog.h.
* alias.c (REG_BASE_VALUE): Cast the result of REGNO() macro to
(unsigned) when comparing against one.
(find_base_value): Likewise.
(record_base_value): Cast variable `regno' to (unsigned) when
comparing against one. Cast the result of REGNO() macro to
(unsigned) when comparing against one.
(memrefs_conflict_p): Change type of variables `r_x' and `r_y' to
unsigned.
(init_alias_analysis): Add unsigned variable `ui'. Use it as loop
variable where an unsigned index is needed.
* caller-save.c (init_caller_save): Cast `-1' to (enum insn_code)
before comparing against one.
* collect2.c: Add prototypes for functions `error', `fatal' and
`fatal_perror'. Make these functions take variable arguments
instead of faking it with a fixed number of args.
(write_c_file_stat): Cast the argument of ctype macro to (unsigned
char).
* combine.c (can_combine_p): Mark parameter `pred' with
ATTRIBUTE_UNUSED.
(find_split_point): Cast variable `src' to (unsigned
HOST_WIDE_INT) when comparing against one.
HOST_WIDE_INT) when comparing against one.
(simplify_rtx): Cast 1 to (unsigned HOST_WIDE_INT) in shift.
(simplify_logical): Likewise.
(force_to_mode): Cast result of INTVAL() macro to (unsigned
HOST_WIDE_INT) when comparing against one. Cast 1 to (unsigned
HOST_WIDE_INT) in shift.
(simplify_and_const_int): Cast result of INTVAL() macro to
`unsigned HOST_WIDE_INT' when comparing against one.
(merge_outer_ops): Cast variable const0 to `unsigned
HOST_WIDE_INT' when comparing against the result of
GET_MODE_MASK() macro.
(simplify_comparison): Likewise for variable `c0'. Cast variable
`const_op' to `unsigned HOST_WIDE_INT' when comparing against
one. Cast `1' to `unsigned HOST_WIDE_INT' in shift. Cast the
result of `GET_MODE_MASK()/2' to `HOST_WIDE_INT' when comparing
against one. Cast `1' to `unsigned HOST_WIDE_INT' in shift. Cast
result of INTVAL() macro to `unsigned HOST_WIDE_INT' when
comparing against one.
(distribute_notes): Wrap variable `cc0_setter' in macro `HAVE_cc0'.
config/mips/mips.c (gen_int_relational): Cast result of INTVAL()
macro to `unsigned HOST_WIDE_INT' when comparing against one.
(output_block_move): Cast `sizeof' expression to (int) when
comparing against one.
(function_arg): Cast BITS_PER_WORD to `unsigned' when comparing
against one.
(save_restore_insns): Cast `base_offset' to `long' to match format
specifier in fprintf.
* config/mips/mips.h (Pmode): Cast the result of `Pmode' macro
to `enum machine_mode'.
* flow.c (life_analysis_1): Remove unused variable `insn'.
* gcc.c (translate_options): Move variables `j' and `k' into the
scope in which they are used. Change their types to `size_t'.
(set_spec): Cast the argument of ctype macro to `unsigned char'.
(read_specs): Likewise.
(process_command): Cast `sizeof' to (int) when comparing against one.
(do_spec_1): Cast the argument of ctype macro to `unsigned char'.
(handle_braces): Cast both sides of `==' expression to `long' to
ensure sign matching.
(main): Cast variable `i' to `int' when comparing against one.
* gcov-io.h (__fetch_long): Change type of parameter `bytes' from
int to size_t. Cast variable `i' to size_t when comparing against
one.
* genattrtab.c (convert_set_attr_alternative): Remove unused
parameter `insn_code'. All callers changed.
(convert_set_attr): Likewise.
* genrecog.c (add_to_sequence): Cast result of XVECLEN() macro to
size_t when comparing against one. Likewise for variable `len'.
* global.c (global_alloc): Cast variable `max_regno' to size_t
when comparing against one. Likewise for variable `max_allocno'.
* jump.c (sets_cc0_p): Mark parameter `x' with ATTRIBUTE_UNUSED.
* local-alloc.c (validate_equiv_mem_from_store): Mark parameter
`set' with ATTRIBUTE_UNUSED.
(find_free_reg): Cast `sizeof' expression to (int) when comparing
against one.
* loop.c (count_loop_regs_set): Remove unused variable `dest'.
(strength_reduce): Mark parameter `bct_p' with ATTRIBUTE_UNUSED.
(get_condition): Cast variable `const_val' to `unsigned
HOST_WIDE_INT' when comparing against one. Cast unsigned
expression to HOST_WIDE_INT when comparing against one.
(insert_loop_mem): Mark parameter `data' with ATTRIBUTE_UNUSED.
(load_mems_and_recount_loop_regs_set): Cast variable `nregs' to
`unsigned' when comparing against one.
* protoize.c (is_id_char): Change type of parameter `ch' to
unsigned char.
(munge_compile_params): Cast argument of ctype macro to (const
unsigned char).
(process_aux_info_file): Cast variable `aux_info_size' to int when
comparing against one.
(forward_to_next_token_char): Cast argument of ctype macro to
`const unsigned char'.
(edit_formals_lists): Likewise.
(find_rightmost_formals_list): Likewise.
(add_local_decl): Likewise.
(add_global_decls): Likewise.
(edit_fn_definition): Likewise.
(do_cleaning): Likewise.
(scan_for_missed_items): Likewise.
(edit_file): Cast variable `orig_size' to (int) when comparing
against one.
(main): Cast argument of ctype macro to `const unsigned char'.
* recog.c (const_int_operand): Mark parameter `mode' with
ATTRIBUTE_UNUSED.
* regclass.c (record_reg_classes): Change type of variable `c' to
`unsigned char'. Cast `char' array index to `unsigned char'.
* reload.c (push_secondary_reload): Cast argument to
REG_CLASS_FROM_LETTER() macro to `unsigned char'.
* reload1.c (calculate_needs): Cast `char' array index to
`unsigned char'.
(set_label_offsets): Change type of variable `i' to unsigned int.
Cast result of XVECLEN() macro to unsigned when comparing against
one.
(mark_not_eliminable): Change type of variable `i' to unsigned.
(order_regs_for_reload): Likewise. Cast `max_regno' to unsigned
when comparing against one.
(reload_as_needed): Cast macro NUM_ELIMINABLE_REGS to (int) when
comparing against one.
(choose_reload_regs): Hide unused label `fail'.
(reload_cse_simplify_operands): Cast `char' array index to
`unsigned char'.
(reload_combine_note_store): Mark parameter `set' with
ATTRIBUTE_UNUSED. Cast UNITS_PER_WORD to unsigned when comparing
against one.
(reload_cse_move2add): Remove unused variable `src2'.
* sched.c: Include recog.h.
(sched_note_set): Remove unused parameter `b'. All callers
changed.
(split_hard_reg_notes): Likewise for parameter `orig_insn'.
(blockage_range): Cast result of UNIT_BLOCKED() macro to (int)
when comparing against one.
* stupid.c (stupid_find_reg): Mark parameter `changes_size' with
ATTRIBUTE_UNUSED. Cast `sizeof' expression to (int) when
comparing against one.
* unroll.c (precondition_loop_p): Remove unused parameter
`loop_end'. All callers changed.
From-SVN: r23079
Tue Oct 13 22:12:11 1998 Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>
* flow.c (find_basic_blocks): Emit NOPs after normal calls in this
function.
Compute max_uid_for_flow by calling get_max_uid after the scan.
(find_basic_blocks_1): Don't emit NOPs here.
From-SVN: r23061
* flow.c: Update comment.
(notice_stack_pointer_modification): New static function.
(record_volatile_insns): Use it.
(mark_regs_live_at_end): Mark the stack pointer as alive
at the end of the function if current_function_sp_is_unchanging
is set.
(life_analysis_1): Set current_function_sp_is_unchanging.
* function.c: Define it.
(init_function_start): Initialize it.
* output.h: Declare it.
* reorg.c (fill_simple_delay_slots, dbr_schedule): Mark
the stack pointer as alive at the end of the function if
current_function_sp_is_unchanging is set.
* i386.c (ix86_epilogue): Optimize the restoring
of the stack pointer.
From-SVN: r23009
Fri Oct 9 15:57:51 1998 Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>
* flow.c (life_analysis_1): Break out some functions.
(find_basic_blocks_1): Likewise. Also move some variables out and
make them static.
Rename NONLOCAL_LABEL_LIST arg to NONLOCAL_LABELS and initialize
new static var nonlocal_label_list with it.
(active_eh_region, nested_eh_region, label_value_list,
nonlocal_label_list): New static variables.
(make_edges, delete_unreachable_blocks, delete_block): New static
functions, broken out of find_basic_blocks_1.
(record_volatile_insns, mark_regs_live_at_end, set_noop_p,
noop_move_p): New static functions, broken out of life_analysis_1.
From-SVN: r22963
* flow.c (find_basic_blocks): Calc upper bound for extra nops in
max_uids_for_flow.
(find_basic_blocks_1): Add a nop to the end of a basic block when
a trailing call insn does not have abnormal control flow.
* gcse.c (pre_transpout): New variable.
(alloc_pre_mem, free_pre_mem, dump_pre_data): Bookkeeping for it.
(compute_pre_transpout): Calculate it.
(compute_pre_ppinout): Use it to eliminate impossible placements
due to abnormal control flow through calls.
(compute_pre_data): Call compute_pre_transpout.
From-SVN: r22907
* dwarf2out.c (expand_builtin_dwarf_reg_size): Fix to work
with more than three size ranges.
* flow.c (sbitmap_copy): Use bcopy to copy bitmap.
* rtl.c (mode_name): Add a null string at the end of the array.
(mode_wider_mode): Change type to unsigned char.
(mode_mask_array): New variable.
(init_rtl): Update for mode_wider_mode type change.
* rtl.h (mode_wider_mode): Change type to unsigned char.
(mode_mask_array): Declare.
(GET_MODE_MASK): Use mode_mask_array.
From-SVN: r22717
* flow.c (find_basic_blocks): Delete check for in_libcall_block when
prev_code is a CALL_INSN. Change check for REG_RETVAL note to
use in_libcall_block.
(find_basic_blocks_1): Delete check for in_libcall_block when prev_code
is a CALL_INSN. If CALL_INSN and in_libcall_block, then change code
to INSN.
From-SVN: r22529
* except.h (current_function_eh_stub_label): Declare.
(current_function_eh_old_stub_label): Declare.
* function.h (struct function): New members eh_stub_label and
eh_old_stub_label.
* except.c (current_function_eh_stub_label): New variable.
(current_function_eh_old_stub_label): New variable.
(init_eh_for_function): Clear them.
(save_eh_status): Save them.
(restore_eh_status): Restore them.
(expand_builtin_eh_stub): Set current_function_eh_stub_label.
(expand_builtin_eh_stub_old): Set current_function_eh_old_stub_label.
* flow.c (find_basic_blocks_1): When handling a REG_LABEL note, don't
make an edge from the block that contains it to the block starting
with the label if this label is one of the eh stub labels.
If eh stub labels exist, show they are reachable from the last block
in the function.
From-SVN: r22369
* c-decl.c (init_decl_processing): Remove unneeded &.
* alpha.h (alpha_initialize_trampoline): Provide prototype.
* except.c (set_exception_lang_code, set_exception_version_code):
Change parameter from `short' to `int' to avoid using a gcc
extension.
* except.h (set_exception_lang_code, set_exception_version_code):
Likewise for prototypes.
* flow.c (count_reg_references): Remove unused variables `regno'
and `i'.
* gcse.c (hash_scan_insn): Declare parameter `in_libcall_block'.
* prefix.c (translate_name): Cast the result of `alloca'.
* varray.h (VARRAY_FREE): Reimplement as a `do-while(0)' statement.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r21781
* alias.c: Include toplev.h
* caller-save.c: Include toplev.h
* combine.c: Include toplev.h
* flow.c Include toplev.h
* global.c: Include toplev.h
* jump.c: Include toplev.h
* local-alloc.c: Include toplev.h
* loop.c: Include toplev.h
* regmove.c: Include toplev.h
* stupid.c: Include toplev.h
* unroll.c: Include toplev.h
* Makefile.in: Add toplev.h dependencies.
From-SVN: r20623
* Makefile.in (c-lang.o): Depend on c-tree.h, c-lex.h and toplev.h.
(c-lex.o): Depend on output.h.
(c-common.o): Likewise.
(stmt.o): Likewise.
(calls.o): Likewise.
(integrate.o): Depend on toplev.h.
(regclass.o): Depend on output.h.
(final.o): Depend on reload.h.
* c-common.c: Include output.h.
(check_format_info): Remove unused variable `integral_format'.
* c-decl.c (print_lang_decl): Mark parameters `file', `node' and
`indent' with ATTRIBUTE_UNUSED.
(print_lang_type): Likewise.
(maybe_build_cleanup): Likewise for parameter `decl'.
(copy_lang_decl): Likewise for parameter `node'.
* c-lang.c: Include c-tree.h, c-lex.h and toplev.h.
(lang_print_xnode): Mark parameters `file', `node' and `indent'
with ATTRIBUTE_UNUSED.
(lookup_interface): Likewise for parameter `arg'.
(is_class_name): Likewise.
(maybe_objc_check_decl): Likewise for parameter `decl'.
(maybe_objc_comptypes): Likewise for parameters `lhs', `rhs' and
`reflexive'.
(maybe_objc_method_name): Likewise for parameter `decl'.
(build_objc_string): Likewise for parameters `len' and `str'.
* c-lex.c: Include output.h.
* c-lex.h (position_after_white_space): Correct typo in prototype.
* c-tree.h (finish_file, c_expand_start_cond, c_expand_start_else,
c_expand_end_cond, init_iterators): Add prototypes.
* caller-save.c (set_reg_live): Mark parameters `reg' and `setter'
with ATTRIBUTE_UNUSED.
* calls.c: Include output.h.
* cccp.c (pipe_closed): Mark parameter `signo' with
ATTRIBUTE_UNUSED.
* combine.c: Move inclusion of expr.h to after insn-config.h.
* iris6.h (ASM_IDENTIFY_GCC, ASM_IDENTIFY_LANGUAGE): Don't define
as empty, rather define as ((void)0).
* sparc.c (sparc_check_64): Add braces around ambiguous `else'.
Add parentheses around assignment used as truth value.
* cplus-dem.c (squangle_mop_up): Change return type to void.
(internal_cplus_demangle): Remove unused parameter `options'.
All callers changed.
(cplus_demangle_opname): Remove function wide variable `int i' and
replace with `size_t i' at each location where it is used.
(cplus_demangle_opname): change type of `i' from int to size_t.
* cppexp.c (right_shift): Mark parameter `pfile' with
ATTRIBUTE_UNUSED.
* cpphash.c (cpp_lookup): Likewise.
(cpp_hash_cleanup): Likewise.
* cpplib.c (parse_name): Add a prototype and make it static.
(null_underflow): Mark parameter `pfile' with ATTRIBUTE_UNUSED.
(null_cleanup): Likewise for parameters `pbuf' and `pfile'.
(macro_cleanup): Likewise for parameter `pfile'.
(file_cleanup): Likewise.
* cpplib.h (cpp_reader_init, cpp_options_init, cpp_start_read,
cpp_read_check_assertion, skip_rest_of_line): Add prototypes.
* crtstuff.c (force_to_data, __CTOR_LIST__, force_to_data,
__DTOR_END__, __FRAME_END__): Mark with ATTRIBUTE_UNUSED.
* cse.c (cse_check_loop_start): Mark parameter `set' with
ATTRIBUTE_UNUSED.
* dbxout.c (flag_minimal_debug, have_used_extensions,
source_label_number): Move inside macro wrapper check against
defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO).
* dwarf2out.c (gen_entry_point_die): Hide prototype and definition.
* except.h (doing_eh): Provide prototype.
* expr.c: Move inclusion of expr.h to after insn-config.h.
* final.c: Include reload.h.
(shorten_branches): Cast the first argument of bzero to char *.
* fix-header.c (cpp_print_containing_files): Mark parameter
`pfile' with ATTRIBUTE_UNUSED.
(cpp_fatal): Likewise.
* flow.c (find_basic_blocks_1): Cast the first argument of bzero
to char *.
* genattrtab.c (make_length_attrs): Change the type of variable
`i' from int to size_t.
(zero_fn): Mark parameter `exp' with ATTRIBUTE_UNUSED.
(one_fn): Likewise.
* genextract.c (main): When generating insn-extract.c, mark
variable `junk' with ATTRIBUTE_UNUSED.
* gengenrtl.c (gencode): When generating genrtl.c, cast the first
argument of bzero to char*.
* integrate.c: Include toplev.h.
* libgcc2.c: Wrap `struct exception_table' and
`find_exception_handler' in macro DWARF2_UNWIND_INFO.
* objc/Make-lang.in (objc-act.o): Depend on toplev.h.
* objc/objc-act.c: Include toplev.h.
(lang_print_xnode): Mark parameters `file', `node' and `indent'
with ATTRIBUTE_UNUSED.
(finish_protocol): Likewise for parameter `protocol'.
* output.h (declare_weak): Add prototype.
(decode_reg_name): Don't wrap with TREE_CODE macro.
(assemble_alias): Add prototype.
* regclass.c: Include output.h.
* reload.h (reloads_conflict): Add prototype.
* rtl.h (print_rtl_single, mark_elimiation, reg_class_subset_p,
output_func_start_profiler): Add prototypes.
* rtlanal.c (reg_set_p_1): Mark parameters `x' and `pat' with
ATTRIBUTE_UNUSED.
* scan-decls.c: Include scan.h.
* scan.h (recognized_function, recognized_extern): Add prototypes.
* stmt.c: Include output.h.
* toplev.c (error_for_asm, warning_for_asm): Remove prototypes.
(output_lang_identify): Hide prototype and definition.
(float_signal): Mark parameter `signo' with ATTRIBUTE_UNUSED.
(pipe_closed): Likewise.
* toplev.h (count_error, strip_off_ending, error_for_asm,
warning_for_asm): Add prototypes.
From-SVN: r19712
* flow.c (sbitmap_union_of_successors): New function.
* basic-block.h (sbitmap_union_of_successors): Declare it.
For completeness, we already had the other 3 variants. This one
is useful for backwards lazy code motion.
From-SVN: r19232
* basic-block.h (basic_block_computed_jump_target): Declare.
* flags.h: (current_function_has_computed_jump): Declare.
* flow.c: (basic_block_computed_jump_target): Define.
(flow_analysis): Allocate it. Set current_function_has_computed_jump
to 0.
(find_basic_blocks): Set current_function_has_computed_jump and
elements of basic_block_computed_jump_target to 1 as appropriate.
* function.c: (current_function_has_computed_jump): Define.
* global.c (global_conflicts): Don't allocate pseudos into stack regs
at the start of a block that is reachable by a computed jump.
* reg-stack.c (stack_reg_life_analysis): If must restart, do so
immediately.
(subst_stack_regs): Undo change from Sep 4 1997.
(uses_reg_or_mem): Now unused, deleted.
* stupid.c (stupid_life_analysis): Compute
current_function_has_computed_jump.
(stupid_find_reg): Don't allocate stack regs if the function has a
computed goto.
* haifa-sched.c (is_cfg_nonregular): Delete code to determine if
the current function has a computed jump. Use the global value
instead.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r18860
d
* basic-block.h (compute_preds_succs): Change return type in
prototype to void.
* flow.c (compute_preds_succs): Likewise in function definition.
* regmove.c (find_matches): Cast char used as array index to unsigned char
to supress warning.
From-SVN: r18507
d
gcc/ChangeLog:
* c-decl (finish_struct): Change type of min_align to unsigned.
* cplus-dem.c (demangle_function_name): Change type of variable i to size_t;
remove unused variable len.
* dwarf2out.c (reg_save): Add explicit cast of -1 to unsigned and a
comment indicating this is proper behaviour.
(reg_loc_descriptor): Remove redundant comparison of unsigned variable
reg >= 0.
(based_loc_descr): Likewise.
* enquire.c (bitpattern): Change type of variable i to unsigned.
* final.c (output_asm_insn): Don't cast insn_noperands to unsigned.
* flow.c (life_analysis): Change type of variable i to size_t;
remove unused variable insn.
* gcc.c (translate_options): Change type of variables optlen, arglen and
complen to size_t.
(input_filename_length): Change type to size_t.
(do_spec_1): Change type of variable bufsize to size_t.
(main): Change type of variables i and j to size_t;
remove subblock local definition of variable i.
(lookup_compiler): Change type of second argument to size_t;
change type of variable i to size_t.
* genemit.c (output_init_mov_optab): Change type of variable i to size_t.
* genopinit.c (get_insn): Change type of variable pindex to size_t.
* genrecog.c (add_to_sequence): Change type of variable i to size_t.
* global.c (global_alloc): Change type of variable i to size_t.
* regclass.c (init_reg_sets): Change type of variables i and j to unsigned.
* stmt.c (expand_end_bindings): Change type of variable i to size_t.
(expand_end_case): Change type of variable count to size_t.
* toplev.c (main): Change type of variable j to size_t.
(set_target_switch): Change type of variable j to size_t.
(print_switch_values): Change type of variable j to size_t;
remove unused variable flags.
* varasm.c (assemble_variable): Change type of variable align to size_t.
(const_hash_rtx): Change type of variable i to size_t.
gcc/cp/ChangeLog:
Sun Mar 8 17:13:38 1998 Manfred Hollstein <manfred@s-direktnet.de>
* decl2.c (lang_decode_option): Change j's type to size_t.
* tree.c (layout_vbasetypes): record_align and desired_align are of
type unsigned int; const_size and nonvirtual_const_size likewise.
From-SVN: r18490
* haifa-sched.c (is_cfg_nonregular): Change return type to
an int. No longer compute "estimated" number of edges. Use
computed_jump_p instead of duplicating the code. Fixup/add
some comments.
(build_control_flow): Returns a value indicating an irregularity
in the cfg was detected. Count the number of edges in the cfg.
allocate various edge tables.
(find_rgns): No longer look for unreachable blocks.
(schedule_insns): Do not allocate memory for edge tables here.
Free memory for edge tables before returning. Do not perform
cross block scheduling if build_control_flow returns nonzero.
* flow.c (compute_preds_succs): More accurately determine when
a block drops in.
Fixes various compile hangs after haifa cleanup.
From-SVN: r18439
* haifa-sched.c (build_jmp_edges): Delete dead function.
(build_control_flow): Use cfg routines from flow.c
(schedule_insns): Remove debugging code accidentally checked
in earlier today.
* basic-block.h: Add external integer list structures, typdefs,
accessor macros and function declarations. Simlarly for
basic block pred/succ support and simple bitmap stuff.
* flow.c: Add functions for integer list, basic block pred/succ
support and simple bitmap support.
(compute_dominators): New function to compute dominators and
post dominators.
(find_basic_blocks): Split into two functions.
(life_analysis): Likewise.
(flow_analysis): Removed. Now handled by calling find_basic_blocks,
the life_analysis from toplev.c
* toplev.c (rest_of_compilation): Call find_basic_blocks, then
life_analysis instead of flow_analysis.
Co-Authored-By: Doug Evans <devans@cygnus.com>
From-SVN: r18421
* flow.c (life_analysis): Do not conside the stack pointer live at
the end of a function if the fucntio ncalls alloca.
(mark_used_regs): Similarly.
From-SVN: r17839
* except.c: Lose outer_context_label_stack.
(expand_eh_region_end): Rethrow from outer_context here.
(expand_fixup_region_end): Let expand_eh_region_end do the rethrow.
(expand_internal_throw): Take no args.
(expand_internal_throw_indirect): Lose.
(expand_leftover_cleanups, expand_start_all_catch): Use expand_rethrow.
(expand_start_all_catch): Start a rethrow region.
(expand_end_all_catch): End it.
(expand_rethrow): New fn.
* except.h: Reflect above changes.
cp/: * except.c (expand_end_catch_block): Lose rethrow region.
(expand_start_catch_block): Likewise.
(expand_end_catch_block): Don't expand_leftover_cleanups.
From-SVN: r16937
* flow.c (find_basic_blocks): During marking phase, if we encounter
an insn with a REG_LABEL note, make the target block live and
create an edge from the insn to the target block. Do not make
edges from all blocks to the target block.
From-SVN: r16469
* flow.c (find_basic_blocks): Refine further to get a more correct
cfg, especially in the presense of exception handling, computed
gotos, and other non-trivial cases. Call abort if an inaccuracy
is detected in the cfg.
From-SVN: r16440
* flow.c (find_basic_blocks): If we delete the label for an
exception handler, remove it from the EH label list and remove
the EH_BEGIN/EH_END notes for that EH region.
From-SVN: r16265
(init_regset_vector): Make global; don't take basic block times # of pseduos
as argument.
(life_analysis): Change all init_regset_vector calls.
Use free_regset_vector to release arrays only flow uses at end.
(allocate_for_life_analysis): Change init_regset_vector call.
Don't set regset_{size,bytes}.
(free_regset_vector): Call FREE_REG_SET to release any memory allocated
by each vector.
(propagate_block): Call FREE_REG_SET on dead/live.
(mark_used_regs): Don't use REGSET_ELT_TYPE anymore.
From-SVN: r14422
* flow.c (find_auto_inc): Also make sure there aren't
any sets of the incremented register between the memory
reference and increment insn.
From-SVN: r11682
(find_basic_blocks): Call it to physically delete insns in
unreachable blocks. When scanning blocks after dead ones,
start scanning after the dead one (not at the dead one).
If there are lots of unreachable blocks, make another pass to squeeze
them out (this reduces memory usage in some pathalogical cases by a
significant amount without resorting to sparse matrices).
(propagate_block): Make code a bit more efficient (for example,
no need to test `loop_depth' for each insn, just notes).
From-SVN: r8440
(mark_used_regs): When adding REG_DEAD notes, check for
the case where a multiple register hard reg overlaps a register
set by the insn.
From-SVN: r7921
(uses_reg_or_mem): New function.
(find_basic_block): Some cleanups; eliminate shadowed variables.
Look for REG_LABEL notes in all insns and allow for multiple such.
Don't delete labels in forced_labels.
Generalize test for computed jumps.
(find_auto_inc): OFFSET should be HOST_WIDE_INT.
(mark_used_regs): Put decls of parms in parm order.
(find_use_as_address): PLUSCONST should be HOST_WIDE_INT.
From-SVN: r6477
(mark_used_regs): Look inside a CLOBBER; it may be the only place regs
are used if it has a stack slot that is from an inlined function.
From-SVN: r6193
