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details.
From-SVN: r24879
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* flow.c (invalidate_from_autoinc): New function.
(mark_set_1, mark_used_regs): Use it.
From-SVN: r24781
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within a libcall block to indicate no...
* 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
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From-SVN: r24738
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* 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
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* Makefile.in (OBJECTS): Add sbitmap.o.
(BASIC_BLOCK_H): Add sbitmap.h.
* basic-block.h: Move simple bitmap code to sbitmap.h.
* flow.c: Move simple bitmap code to sbitmap.c
* sbitmap.h, sbitmap.c: New files.
From-SVN: r24628
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From-SVN: r24624
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* basic-block.h (basic_block_head): Rename to x_basic_block_head.
(basic_block_end): Rename to x_basic_block_end.
(BLOCK_HEAD, BLOCK_END): Update.
* caller-save.c: Change basic_block_head/end references to
BLOCK_HEAD/END.
* combine.c, flow.c, function.c, gcse.c, global.c: Likewise.
* graph.c, haifa-sched.c, local-alloc.c, regclass.c: Likewise.
* regmove.c, reload1.c, reorg.c, sched.c: Likewise.
From-SVN: r24622
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* rtl.h (recompute_reg_usage): Add second argument.
* flow.c (recompute_reg_usage): Likewise.
* toplev.c (rest_of_compilation): Supply second argument to
recompute_reg_usage.
From-SVN: r24291
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From-SVN: r24226
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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
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(kept_tail).
8
* flow.c (delete_block): Call set_last_insn after we have reset
NEXT_INSN (kept_tail).
From-SVN: r24059
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insn in the rtl chain.
* flow.c (delete_block): Call set_last_insn if we end up deleting the
last insn in the rtl chain.
From-SVN: r24052
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selectable.
* cse.c (fold_rtx): Make autoincrement addressing mode tests be
runtime selectable.
* expr.c (move_by_pieces): Similarly.
(move_by_pieces_1, clear_by_pieces, clear_by_pieces_1): Similarly.
* flow.c (find_auto_inc): Similarly.
(try_pre_increment): Similarly.
* loop.c (strength_reduce): Similarly.
* regclass.c (auto_inc_dec_reg_p): Similarly.
* regmove.c (try_auto_increment): Similarly.
(fixup_match_1): Similarly.
* rtl.h (HAVE_PRE_INCREMENT): Define if not already defined.
(HAVE_PRE_DECREMENT): Similarly.
(HAVE_POST_INCREMENT, HAVE_POST_DECREMENT): Similarly.
sponding changes to all target header files.
From-SVN: r23837
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From-SVN: r23680
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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
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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
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* 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
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* 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
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* flow.c (life_analysis_1): Enable "rescan" code after reload.
(propagate_block): Delete dead code after reload.
From-SVN: r23262
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From-SVN: r23257
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* combine.c (recog_for_combine): Lose PADDED_SCRATCHES arg. All
callers changed.
(try_combine): Don't update max_scratch.
* flow.c (max_scratch, num_scratch): Delete variables.
(life_analysis_1): Don't initialize max_scratch.
(propagate_block): Don't update max_scratch.
(mark_set_1): Don't increment num_scratch.
* regs.h (max_scratch): Delete declaration.
From-SVN: r23172
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* 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
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regs_sometimes_live with simpler code that...
* 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
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has completed.
* flow.c (find_basic_blocks_1): Do not delete unreachable blocks
after reload has completed.
From-SVN: r23140
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* 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
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* 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
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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
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* 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
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From-SVN: r22986
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* flow.c (find_basic_blocks): Delte "live_reachable_p" argument.
(find_basic_blocks_1): Similarly.
* output.h (find_basic_blocks): Fix prototype.
* gcse.c, toplev.c: Don't pass "live_reachable_p" argument to
find_basic_blocks anymore.
From-SVN: r22979
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Fri Oct 9 16:03:19 1998 Graham <grahams@rcp.co.uk>
* flow.c (print_rtl_with_bb): Changed type of in_bb_p to match use.
* gcc.c (add_preprocessor_option): Correct typo when allocating
memory, sizeof() argument had one too many `*'.
(add_assembler_option): Likewise.
(add_linker_option): Likewise.
* gcov.c (output_data): Likewise.
* local-alloc.c (memref_used_between_p): Likewise.
(update_equiv_regs): Likewise.
* loop.c (strength_reduce): Likewise.
* reg-stack.c (record_asm_reg_life): Likewise.
(subst_asm_stack_reg): Likewise.
* reorg.c (dbr_schedule): Likewise.
From-SVN: r22964
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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
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exception region.
* flow.c (find_basic_blocks): Correctly determine when a call
is within an exception region.
From-SVN: r22928
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max_uids_for_flow.
* 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
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* flags.h (flag_dump_unnumbered): Declare.
* toplev.c (flag_dump_unnumbered): Don't declare.
* print-rtl.c (flags.h): Include.
(print_rtl_single): Add return value.
* rtl.h (print_rtl_single): Update declaration.
* flow.c (flag_dump_unnumbered): Don't declare.
(print_rtl_with_bb): Use return value of print_rtl_single.
From-SVN: r22865
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three size ranges.
* 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
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* 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
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* tree.h (BUILT_IN_CALLER_RETURN_ADDRESS): Unused. Kill.
(BUILT_IN_FP, BUILT_IN_SP, BUILT_IN_SET_RETURN_ADDR_REG): Kill.
(BUILT_IN_EH_STUB_OLD, BUILT_IN_EH_STUB, BUILT_IN_SET_EH_REGS): Kill.
(BUILT_IN_EH_RETURN, BUILT_IN_DWARF_CFA): New.
* c-decl.c (init_decl_processing): Update accordingly.
* expr.c (expand_builtin): Likewise.
* cp/decl.c (init_decl_processing): Likewise.
* rtl.h (global_rtl): Add cfa entry.
(virtual_cfa_rtx, VIRTUAL_CFA_REGNUM): New.
(LAST_VIRTUAL_REGISTER): Update.
* emit-rtl.c (global_rtl): Add cfa entry.
(init_emit): Initialize it.
* function.c (cfa_offset): New.
(instantiate_virtual_regs): Initialize it.
(instantiate_virtual_regs_1): Instantiate virtual_cfa_rtx.
(expand_function_end): Call expand_eh_return.
* tm.texi (ARG_POINTER_CFA_OFFSET): New.
* except.c (current_function_eh_stub_label): Kill.
(current_function_eh_old_stub_label): Likwise; update all references.
(expand_builtin_set_return_addr_reg): Kill.
(expand_builtin_eh_stub_old, expand_builtin_eh_stub): Kill.
(expand_builtin_set_eh_regs): Kill.
(eh_regs): Produce a third reg for the actual handler address.
(eh_return_context, eh_return_stack_adjust): New.
(eh_return_handler, eh_return_stub_label): New.
(init_eh_for_function): Initialize them.
(expand_builtin_eh_return, expand_eh_return): New.
* except.h: Update prototypes.
* flow.c (find_basic_blocks_1): Update references to the stub label.
* function.h (struct function): Kill stub label elements.
* libgcc2.c (in_reg_window): For REG_SAVED_REG, check that the
register number is one that would be in the previous window.
Provide a dummy definition for non-windowed targets.
(get_reg_addr): New function.
(get_reg, put_reg, copy_reg): Use it.
(__throw): Rely on in_reg_window, not INCOMING_REGNO. Kill stub
generating code and use __builtin_eh_return. Use __builtin_dwarf_cfa.
* alpha.c (alpha_eh_epilogue_sp_ofs): New.
(alpha_init_expanders): Initialize it.
(alpha_expand_epilogue): Use it.
* alpha.h: Declare it.
* alpha.md (eh_epilogue): New.
* m68h.h (ARG_POINTER_CFA_OFFSET): New.
* sparc.h (ARG_POINTER_CFA_OFFSET): New.
From-SVN: r22436
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CALL insns.
* flow.c (mark_set_1): Recognize multi-register structure return
values in CALL insns.
(mark_used_regs): Likewise.
(count_reg_sets_1): Likewise.
(count_reg_references): Likewise.
* rtlanal.c (note_stores): Likewise.
From-SVN: r22395
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* 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
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* 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
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From-SVN: r21321
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* flow.c (find_auto_inc): Remove most recent change. Real bug was
elsewhere.
From-SVN: r21013
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* flow.c (find_auto_inc): Clear UNCHANGING bit of register that is
changed.
From-SVN: r20974
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From-SVN: r20894
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* flow.c (recompute_reg_usage): Does not return a value.
* rtl.h (recompute_reg_usage): Update prototype.
From-SVN: r20858
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details.
From-SVN: r20808
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* flow.c (count_reg_sets): New function.
(count_reg_sets_1, count_ref_references): Likewise.
(recompute_reg_usage): Likewise.
* rtl.h (recompute_reg_usage): Add prototype.
* toplev.c (rest_of_compilation): Call recompute_reg_usage just
before local register allocation.
From-SVN: r20756
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* basic-block.h (init_regset_vector): Delete declaration.
* flow.c (init_regset_vector): Make it static and add a prototype.
From-SVN: r20647
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