* rtl.h (rtl_size): Declare.
	(rtunion): Remove rtwint.
	(rtx_def): Replace 'fld' with a union of an rtunion or a HOST_WIDE_INT.
	(RTX_HDR_SIZE, RTX_SIZE): New macros.
	(RTL_CHECK1): Adjust for new rtx_def layout.
	(RTL_CHECK2, RTL_CHECKC1, RTL_CHECKC2): Likewise.
	(XWINT, XCWINT): Likewise.  Access the rtx structure directly.
	(X0WINT): Remove.
	(X0ANY): New macro.
	* rtl.def: Adjust comments for new rtx_def layout.
	* ggc.h (ggc_alloc_rtx): Take the rtx code as argument, not the
	number of slots.
	* rtl.c (rtx_size): New array.
	(rtx_alloc): Adjust call to ggc_alloc_rtx.  Use RTX_HDR_SIZE.
	(copy_rtx): Use RTX_HDR_SIZE.  Adjust for new rtx_def layout.
	(shallow_copy_rtx): Adjust call to ggc_alloc_rtx.  Use RTX_SIZE.
	* integrate.c (copy_rtx_and_substitute): Use X0ANY to copy '0' fields.
	* emit-rtl.c (copy_most_rtx): Likewise.
	(copy_rtx_if_shared): Use RTX_SIZE.
	(copy_insn_1): Use RTX_HDR_SIZE.  Adjust for new rtx_def layout.
	* gengenrtl.c (gendef): Adjust ggc_alloc_rtx call.  Use RTX_HDR_SIZE.
	* gengtype.c (write_rtx_next): Use RTX_HDR_SIZE.
	(adjust_field_rtx_def): Expect "rtx_def" to be a union rather than
	an array.  Adjust output for new rtx_def layout.
	* ggc-page.c (RTL_SIZE): Use RTX_HDR_SIZE.
	* reload1.c (eliminate_regs): Use RTX_SIZE.
	* rtlanal.c (loc_mentioned_in_p): Adjust for new rtx_def layout.
	* gdbinit.in (pi): Likewise.

From-SVN: r72647

	* Makefile.in (web.o): New.
	* web.c: New file.
	* rtl.h (web_main): Declare.
	* timervar.def (TV_WEB): New.
	* toplev.c (dump_file_index, dump_file_info): Add DFI_web.
	(rest_of_hanle_web): New.
	(flag_web): New static variable.
	(lang_independent_options): Add "web".
	(rest_of_compilation): Call rest_of_handle_web.
	* invoke.texi (-fweb): Document.
	* common.opt (fweb): New.
	* flags.h (flag_web): New.
	* opts.c (decode_options): Set flag_web at -O3.

	* passes.texi (web construction):  Document.
	* invoke.texi (-O3): Document that -fweb is enabled.

	* regrename.c (regrename_optimize): Deal better with situation when
	replacement failed.

	* sched-ebb.c: Include params.h and profile.h
	(schedule_ebbs):  Use tracer parameters to discover superblocks
	* Makefile.in (sched-ebb.o):  Add dependencies.

From-SVN: r72383

	PR optimization/8967
	* alias.c (write_dependence_p): Modify to take an additional constp
	argument that controls whether the UNCHANGING_RTX_P flags are used.
	(anti_dependence, output_dependence): Adjust write_dependence_p
	callers to pass this additional argument, to return the same result.
	(unchanging_anti_dependence): New variant of anti_dependence that
	ignores the UNCHANGING_RTX_P property on memory references.
	* rtl.h (unchaning_anti_dependence): Prototype here.
	* flow.c (init_propagate_block): Place fake constant mem writes on
	the mem_set_list so that dead writes to const variables are deleted.
	(insn_dead_p): Change anti_dependence to unchanging_anti_dependence.
	(mark_used_regs): Likewise.

From-SVN: r71332

	* targhooks.c: New file.
	* targhooks.h: New file.
	* Makefile.in: Add targhooks.o support.
	(function.o): Depend on$(TARGET_H).
	(stmt.o): Likewise.
	(combine.o): Depend on $(TREE_H) and $(TARGET_H).
	* builtins.c (apply_args_size, expand_builtin_apply_args_1,
	expand_builtin_apply): Convert to calls.struct_value_rtx hook.
	(expand_builtin_saveregs): Convert to
	calls.expand_builtin_saveregs hook.
	* c-decl.c (start_decl): Handle new calls.promote_prototypes hook
	here, instead of ...
	(get_parm_info) ... here.
	(store_parm_decls_oldstyle): Convert to calls.promote_prototypes
	hook.
	(finish_function): Handle calls.promote_prototypes hook here too.
	* c-typeck.c (convert_arguments): Convert to
	calls.promote_prototypes hook.
	(c_convert_parm_for_inlining): Likewise.
	* calls.c (initialize_argument_information): Convert to
	calls.promote_function_args hook.
	(expand_call): Convert to calls.struct_value_rtx,
	calls.strict_argument_naming,
	calls.pretend_outgoing_varargs_named, and
	calls.promote_function_return hooks.  Pass fndecl to
	aggregate_value_p.  Initialize CUMULATIVE_ARGS before calling
	hooks, so they can use that.
	(emit_library_call_value_1): Likewise.
	* combine.c (setup_incoming_promotions): Convert to
	calls.promote_function_args hook.
	* emit-rtl.c: Convert to calls.struct_value_rtx hook.
	* expr.c (expand_assignment): Pass call to aggregate_value_p.
	(expand_expr): Likewise.
	* expr.h: Remove support for SETUP_INCOMING_VARARGS,
	STRICT_ARGUMENT_NAMING, PRETEND_OUTGOING_VARARGS_NAMED,
	RETURN_IN_MEMORY macro defaults.
	* final.c (profile_function): Convert to calls.struct_value_rtx
	hook.
	* function.c (aggregate_value_p): Accept function type tree as
	second parameter; try to deduce fntype from it.  Convert to
	calls.return_in_memory hook.
	(assign_parms): Convert to calls.setup_incoming_varargs,
	calls.strict_argument_naming, calls.promote_function_args,
	calls.pretend_outgoing_varargs_named hooks.  Pass fndecl to
	aggregate_value_p.
	(expand_function_start): Likewise.  Convert to
	calls.struct_value_rtx hook.
	(expand_function_end): Convert to calls.promote_function_return hook.
	(allocate_struct_function): Pass fndecl to aggregate_value_p.
	* hard-reg-set.h: Update comments to new hook names.
	* integrate.c (expand_inline_function): Pass fndecl to aggregate_value_p.
	* reg-stack.c (stack_result): Likewise.
	* rtl.h (struct_value_rtx, struct_value_incoming_rtx): Delete.
	* stmt.c (expand_value_return): Convert to
	calls.promote_function_return hook.
	* target-def.h: Add TARGET_PROMOTE_FUNCTION_ARGS,
	TARGET_PROMOTE_FUNCTION_RETURN, TARGET_PROMOTE_PROTOTYPES,
	TARGET_STRUCT_VALUE_RTX, TARGET_RETURN_IN_MEMORY,
	TARGET_EXPAND_BUILTIN_SAVEREGS, TARGET_SETUP_INCOMING_VARARGS,
	TARGET_STRICT_ARGUMENT_NAMING,
	TARGET_PRETEND_OUTGOING_VARARGS_NAMED, and TARGET_CALLS.
	* target.h: Likewise.
	* tree.h (aggregate_value_p): Also takes a tree to deduce function
	attributes from (for target hooks).
	* doc/tm.texi (PROMOTE_FUNCTION_ARGS, PROMOTE_FUNCTION_RETURN,
	PROMOTE_PROTOTYPES, RETURN_IN_MEMORY, STRUCT_VALUE_REGNUM,
	STRUCT_VALUE, STRUCT_VALUE_INCOMING_REGNUM, STRUCT_VALUE_INCOMING,
	EXPAND_BUILTIN_SAVEREGS, SETUP_INCOMING_VARARGS,
	STRICT_ARGUMENT_NAMING, PRETEND_OUTGOING_VARARGS_NAMED): Convert
	to hooks.

	* config/alpha/alpha.c (alpha_output_mi_thunk_osf): Pass function
	to aggregate_value_p.
	* config/arm/arm.c (arm_init_cumulative_args,
	arm_output_mi_thunk): Likewise.
	* config/i386/i386.c (ix86_return_pops_args, x86_this_parameter):
	Likewise.
	* config/mips/mips.c (mips_save_reg_p, mips_expand_prologue,
	mips_can_use_return_insn): Likewise.
	* config/rs6000/rs6000.c (rs6000_output_mi_thunk): Likewise.
	* config/s390/s390.c (s390_output_mi_thunk): Likewise.
	* config/sparc/sparc.c (sparc_output_mi_thunk): Pass function to
	aggregate_value_p.
	* config/story16/stormy16.c (xstormy16_asm_output_mi_thunk): Pass
	function to aggregate_value_p.
	* objc/objc-act.c (generate_struct_by_value_array): Pass NULL to
	aggregate_value_p.

	* config/sh/sh-protos.h (sh_builtin_saveregs): Remove.
	(sh_attr_renesas_p, sh_cfun_attr_renesas_p, sh_function_arg,
	sh_function_arg_advance, sh_pass_in_reg_p): New.  * config/sh/sh.c
	(sh_handle_renesas_attribute, sh_promote_prototypes,
	sh_struct_value_rtx, sh_return_in_memory, sh_builtin_saveregs,
	sh_setup_incoming_varargs, sh_strict_argument_naming,
	sh_pretend_outgoing_varargs_named): New decls.
	(targetm): Add new hooks.
	(calc_live_regs): Save MACL and MACH if the function has the
	renesas attribute.
	(sh_expand_prologue): Support renesas attribute.
	(sh_builtin_saveregs): Make static.
	(sh_build_va_list): Support renesas attribute.
	(sh_va_start): Likewise.
	(sh_va_arg): Likewise.
	(sh_promote_prototypes): New.
	(sh_function_arg): New, moved from sh.h.  Support renesas
	attribute.
	(sh_function_arg_advance): Likewise.
	(sh_return_in_memory): Likewise.
	(sh_strict_argument_naming): Likewise.
	(sh_pretend_outgoing_varargs_named): Likewise.
	(sh_struct_value_rtx): New.
	(sh_attribute): Add renesas attribute.
	(sh_handle_renesas_attribute): New.
	(sh_attr_renesas_p, sh_cfun_attr_renesas_p): New.
	(sh_ms_bitfield_layout_p): Support renesas attribute also.
	(sh_output_mi_thunk): Pass function to aggregate_value_p.  *
	config/sh/sh.h (TARGET_SWITCHES): Add -mrenesas as an alias for
	-mhitachi.
	(STRUCT_VALUE_REGNUM, STRUCT_VALUE, RETURN_IN_MEMORY): Moved to
	target hooks.
	(sh_args): Add renesas_abi flag.
	(INIT_CUMULATIVE_ARGS): Set it.  Pass fndecl to aggregate_value_p.
	(FUNCTION_ARG_ADVANCE, FUNCTION_ARG): Move to sh.c.
	(PASS_IN_REG_P): Support renesas attribute.  Pass DF and TF on the
	stack for the renesas abi.
	(STRICT_ARGUMENT_NAMING, PRETEND_OUTGOING_VARARGS_NAMED,
	SETUP_INCOMING_VARARGS, EXPAND_BUILTIN_SAVEREGS,
	PROMOTE_PROTOTYPES): Moved to sh.c.  * config/sh/sh.md (call): Set
	call cookie to indicate renesas calls.

	* decl.c (finish_function): Pass fndecl to aggregate_value_p.

	* misc.c (default_pass_by_ref): Convert to calls.return_in_memory
	hook.

From-SVN: r71048

	* regclass.c (init_reg_modes):  Make non-static.
	Rename to init_reg_modes_once per new naming convention.
	(init_regs):  Don't call init_reg_modes here.
	* emit-rtl.c (init_emit_once):  Call init_reg_modes_once here instead.
	* rtl.h (init_reg_modes_once):  New declaration.
	* toplev.c (backend_init):  Call init_regs after init_emit_once.

From-SVN: r70426

        * system.h: Poison ASM_SIMPLIFY_DWARF_ADDR.

        * varasm.c (lookup_constant_def): New function.
        * rtl.h (lookup_constant_def): Declare it.
        * dwarf2out.c (loc_descriptor_from_tree): Use it.
        Use targetm.delegitimize_address, not ASM_SIMPLIFY_DWARF_ADDR.

From-SVN: r70072

	* combine.c (distribute_notes): Cancel REG_VALUE_PROFILE notes.
	* gcov-io.h (GCOV_FIRST_VALUE_COUNTER, GCOV_LAST_VALUE_COUNTER,
	GCOV_N_VALUE_COUNTERS): New.
	* profile.c (compute_value_histograms): New static function.
	(branch_prob): Read back the value histograms.
	* rtl.c (reg_note_name): Add name for REG_VALUE_PROFILE note.
	* rtl.h (enum reg_note): Add REG_VALUE_PROFILE note.
	* value-prof.c: Add comment on reading the profile.
	* value-prof.h (COUNTER_FOR_HIST_TYPE, HIST_TYPE_FOR_COUNTER): New.
	* doc/invoke.texi (-fprofile-values): Document behavior with
	-fbranch-probabilities.

From-SVN: r69969

	* cfglayout.c (locator_file): Break out from ....
	(insn_file): ... here.
	(locator_line): Break out from ....
	(insn_line): ... here.
	* rtl.h (locator_file, locator_line): Declare.
	(final_start_function): Set proper line/file info.

From-SVN: r69359

	* regclass.c (choose_hard_reg_mode): Add third argument.
	Changed all callers.
	* rtl.h (choose_hard_reg_mode): Update declaration.
	* dwarf2out.c (expand_builtin_init_dwarf_reg_sizes):
	Take HARD_REGNO_CALL_PART_CLOBBERED into account.

From-SVN: r69234

	* rtl.h (emit_line_note): Take a location_t.
	(emit_line_note_force): Remove.
	(set_file_and_line_for_statement): Take a location_t.
	* tree.g (emit_line_note): Take a location_t.
	* emit-rtl.c (emit_line_note): Take a location_t.
	(emit_line_note_force): Remove.
	* function.c (init_function_start): Adjust emit_line_note call.
	(expand_function_end): Use force_next_line_note, not
	emit_line_note_force.
	* c-parse.in (maybe_type_qual): Adjust emit_line_note calls.
	* c-semantics.c (genrtl_do_pushlevel, genrtl_goto_stmt,
	genrtl_expr_stmt_value, genrtl_decl_stmt, genrtl_if_stmt,
	genrtl_while_stmt, genrtl_do_stmt_1, genrtl_return_stmt,
	genrtl_for_stmt, genrtl_break_stmt, genrtl_continue_stmt,
	genrtl_continue_stmt, genrtl_switch_stmt,
	genrtl_asm_stmt): Likewise.
	* expr.c (expand_expr): Likewise.
	* integrate.c (expand_inline_function): Likewise.
	* stmt.c (set_file_and_line_for_stmt): Take a location_t.
	(expand_decl_init): Adjust emit_line_note call.

	* ada/trans.c (build_unit_elab, set_lineno): Adjust emit_line_note
	calls.

	* cp/semantics.c: (genrtl_try_block) Adjust emit_line_note
	calls.

	* f/com.c (bison_rule_pushlevel_, bison_rule_compstmt_): Adjust
	emit_line_note calls.
	* f/ste.c (ffeste_emit_line_note_): Likewise.

	* java/expr.c (expand_byte_code):

	* treelang/treetree.c (tree_code_if_start, tree_code_if_else,
	tree_code_if_end, tree_code_create_function_initial,
	tree_code_create_function_wrapup, tree_code_generate_return,
	tree_code_output_expression_statement): Adjust emit_line_note
	calls.

From-SVN: r69047

PR optimization/9812
* rtl.h (mem_for_const_double): Delete prototype.
* varasm.c (mem_for_const_double): Delete function.
* config/m68k/hp320.h, config/m68k/linux.h, config/m68k/m68kelf.h,
config/m68k/m68kv4.h, config/m68k/netbsd-elf.h
(LEGITIMATE_PIC_OPERAND_P): Delete duplicate definitions.
* config/m68k/m68k.h (LEGITIMATE_CONSTANT_P): Disallow XFmode.
(LEGITIMATE_PIC_OPERAND_P): Delete CONST_DOUBLE tests.
* config/m68k/m68k.md (movxf): Add reload_in_progress guard.  Add
comment about confused support for XFmode constants.

From-SVN: r69027

	* jump.c: Convert prototypes to ISO C90.
	* langhooks-def.h: Likewise.  Add extern to prototypes.
	* langhooks.c: Likewise.
	* langhooks.h: Likewise.
	* lcm.c: Likewise.
	* local-alloc.c: Likewise.
	* loop-init.c: Likewise.
	* loop-unroll.c: Likewise.
	* loop-unswitch.c: Likewise.
	* loop.c: Likewise.
	* loop.h: Likewise. Add extern to prototypes.
	* machmode.h: Likewise.
	* main.c: Likewise.
	* mbchar.c: Likewise.
	* mbchar.h: Likewise.
	* mkdeps.c: Likewise.
	* mkdeps.h: Likewise.
	* optabs.c: Likewise.
	* optabs.h: Likewise.
	* output.h: Likewise.
	* gccspec.c: Likwise.
	* postreload.c: Likewise.
	* prefix.c: Likewise.
	* prefix.h: Likewise.
	* print-rtl.c: Likewise.
	* print-tree.c: Likewise.
	* profile.c: Likewise.
	* read-rtl.c: Likewise.
	* real.c: Likewise.
	* real.h: Likewise.
	* recog.c: Likewise.
	* recog.h: Likewise.
	* reg-stack.c: Likewise.
	* regclass.c: Likewise.
	* regmove.c: Likewise.
	* regrename.c: Likewise.
	* regs.h: Likewise.
	* reload.c: Likewise.
	* reload.h: Likewise.
	* reload1.c: Likewise.
	* reorg.c: Likewise.
	* resource.c: Likewise.
	* resource.h: Likewise.
	* rtl-error.c: Likewise.
	* rtl.c: Likewise.
	* rtl.h: Likewise.
	* rtlanal.c: Likewise.

From-SVN: r68998

2003-07-03  Steven Bosscher  <steven@gcc.gnu.org>

	* rtl.h (ECF_*, flags_from_decl_or_type): Move from here...
	* tree.h: ...to here.

From-SVN: r68890

	* rtl.h (NOTE_DATA): Refer to whole union.
	* emit-rtl.c (emit_note): Use memset to clear NOTE_DATA.

From-SVN: r68874

	* rtl.h (emit_line_note_after): Remove.
	(emit_note_copy_after, emit_note_copy): New.
	* emit-rtl.c (reorder_insns_with_line_notes): Replace
	emit_line_note_after with emit_note_copy_after.
	(emit_insn_after_with_line_notes): Likewise.
	(emit_line_note_after): Kill.
	(emit_note_copy_after): New.
	(emit_note_copy): New.
	* function.c (emit_return_into_block): Use emit_note_copy_after.
	(thread_prologue_and_epilogue_insns): Likewise.
	* integrate.c (expand_inline_function): Use emit_note_copy.
	(copy_insn_list): Likewise.
	* unroll.c (copy_loop_body): Likewise.
	* cfglayout.c (duplicate_insn_chain): Likewise.

From-SVN: r68767

	* combine.c (distribute_notes): Don't bother REG_WAS_0.
	* cse.c (cse_insn): Likewise.
	* final.c (final_scan_insn): Likewise.
	* jump.c (duplicate_loop_exit_test): Likewise.
	* rtl.c (reg_note_name): Remove REG_WAS_0.
	* rtl.h (REG_WAS_0): Remove.
	* unroll.c (final_reg_note_copy): Don't bother REG_WAS_0.
	* config/avr/avr.c (output_movqi): Don't use reg_was_0.
	(output_movhi): Likewise.
	(output_movsisf): Likewise.
	(reg_was_0): Remove.
	* config/m68hc11/m68hc11.c (m68hc11_gen_movhi): Don't use
	REG_WAS_0.
	(m68hc11_gen_movqi): Likewise.
	* config/vax/vax-protos.h: Remove the prototype for
	reg_was_0_p.
	* config/vax/vax.c (follows_p): Remove.
	(reg_was_0_p): Likewise.
	* config/vax/vax.md (movsi): Don't use reg_was_0_p.
	(movhi): Likewise.
	(movqi): Likewise.
	* doc/rtl.texi (REG_WAS_0): Remove.

From-SVN: r68753

	* explow.c (find_next_ref): Remove.
	* rtl.h: Remove the prototype for find_next_ref.

From-SVN: r68628

	* rtl.h (emit_note): Remove FILE parameter.
	* emit-rtl.c (emit_line_note): Adjust emit_note call.
	(emit_note): Remove FILE parameter. Adjust.
	* builtins.c (expand_builtin_expect): Adjust emit_note call.
	* c-semantics.c (genrtl_scope_stmt): Likewise.
	(expand_stmt): Likewise.
	* cfglayout.c (reemit_insn_block_notes): Likewise.
	(duplicate_insn_chain): Likewise.
	* except.c (expand_eh_region_start, expand_eh_region_end,
	sjlj_emit_function_enter): Likewise.
	* explow.c (probe_stack_range): Likewise.
	* expr.c (emit_block_move_via_loop): Likewise.
	* function.c (init_function_start, expand_function_start,
	expand_function_end, thread_prologue_and_epilogue_insns): Likewise.
	* integrate.c (expand_inline_function, copy_insn_list): Likewise.
	* reg-stack.c (compensate_edge): Likewise.
	* reload1.c (reload): Likewise.
	* rtlanal.c (hoist_insn_to_edge): Likewise.
	* stmt.c (expand_fixup, expand_start_loop, expand_start_null_loop,
	expand_loop_continue_here, expand_end_loop, expand_continue_loop,
	expand_exit_loop_top_cond, expand_value_return,
	expand_start_bindings_and_block, expand_end_bindings,
	expand_decl_cleanup, expand_start_case): Likewise.
	* unroll.c (copy_loop_body
	* config/alpha/alpha.c (alpha_output_mi_thunk_osf): Likewise.
	* config/ia64/ia64.c (ia64_output_mi_thunk): Likewise.
	* config/rs6000/rs6000.c (rs6000_emit_eh_toc_restore,
	rs6000_emit_allocate_stack, rs6000_output_function_prologue,
	rs6000_output_function_epilogue, rs6000_output_mi_thunk): Likewise.
	* config/sh/sh.c (sh_output_mi_thunk): Likewise.
	* config/sparc/sparc.c (sparc_output_mi_thunk): Likewise.

	* ada/misc.c (record_code_position): Likewise.

From-SVN: r68561

	* jump.c (next_nondeleted_insn): Remove.
	* rtl.h: Remove the prototype for next_nondeleted_insn.

From-SVN: r68453

	* c-tree.h: Remove declaration of poplevel.

	* tree.h: Remove declaration of approx_sqrt.

	* c-lex.c: Remove redundant declaration of asm_out_file.

	* flags.h: Remove declaration of warn_unknown_pragma and
	main_input_filename.

	* rtl.h: Remove functions from fold-const.c since they're already
	declared in tree.h.

	* regs.h: Remove redundant declaration of reg_names.

cp:

	* cp-tree.h: Remove duplicated declarations.

From-SVN: r68193

2003-06-18  Stephen Clarke <stephen.clarke@superh.com>
            J"orn Rennecke <joern.rennecke@superh.com>

	* bt-load.c: New file.
	* Makefile.in (OBJS): Include bt-load.o
	(bt-load.o): Add dependencies.
	* flags.h (flag_branch_target_load_optimize): Declare.
	(flag_branch_target_load_optimize2): Likewise.
	* hooks.c (hook_reg_class_void_no_regs): New function.
	(hook_bool_bool_false): Likewise.
	* hooks.h (hook_reg_class_void_no_regs, hook_bool_bool_false): Declare.
	* rtl.h (branch_target_load_optimize): Declare.
	* target-def.h (TARGET_BRANCH_TARGET_REGISTER_CLASS): Define.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	(TARGET_INITIALIZER): Include these.
	* target.h (struct gcc_target): Add branch_target_register_class
	and branch_target_register_callee_saved members.
	* toplev.c (enum dump_file_index): Add DFI_branch_target_load
	(dump_file) Add "tars" entry.
	(flag_branch_target_load_optimize): New variable.
	(flag_branch_target_load_optimize2): Likewise.
	(lang_independent_options): Add entries for new options.
	(rest_of_compilation): Call branch_target_load_optimize.
	* doc/tm.texi (TARGET_BRANCH_TARGET_REGISTER_CLASS): Document.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	* doc/invoke.texi: Document -fbranch-target-load-optimize and
	-fbranch-target-load-optimize2.
	* rtl.h (epilogue_completed): Declare.
	* recog.c (epilogue_completed): New variable.
	* toplev.c (rest_of_compilation): Set it.
	* flow.c (mark_regs_live_at_end): Use it.
	* config/ia64/ia64.c (ia64_output_mi_thunk): Set it.
	* config/rs6000/rs6000.c (rs6000_output_mi_thunk): Likewise.
	* config/sh/sh.c (sh_output_mi_thunk): Likewise.
	* config/sparc/sparc.c (sparc_output_mi_thunk): Likewise.

	* sh.c (shmedia_space_reserved_for_target_registers): New variable.
	(sh_target_reg_class): New function.
	(sh_optimize_target_register_callee_saved): Likwise.
	(shmedia_target_regs_stack_space): Likewise.
	(shmedia_reserve_space_for_target_registers_p): Likewise.
	(shmedia_target_regs_stack_adjust): Likewise.
	(TARGET_BRANCH_TARGET_REGISTER_CLASS): Override.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	(calc_live_regs): If flag_branch_target_load_optimize2 and
	TARGET_SAVE_ALL_TARGET_REGS is enabled, and we have space reserved
	for target registers, make sure that we save all target registers.
	(sh_expand_prologue, sh_expand_epilogue): Take target register
	optimizations into account.  Collapse stack adjustments if that
	is beneficial.
	(initial_elimination_offset): Reserve space for target registers
	if necessary.
	* sh.h (SAVE_ALL_TR_BIT, TARGET_SAVE_ALL_TARGET_REGS): Define.
	(OPTIMIZATION_OPTIONS): Enable flag_branch_target_load_optimize.

Co-Authored-By: J"orn Rennecke <joern.rennecke@superh.com>

From-SVN: r68165

	* rtl.h: Remove declarations from coverage.h.
	* toplev.c: Include coverage.h.
	* Makefile.in (toplev.o): Depend on coverage.h.

	* toplev.h: Remove extra declaration of print_time.

	* gengtype.c (close_output_files): Remove duplicated declaration.

From-SVN: r68066

	* convert.c, dwarf2out.c, dwarfout.c, emit-rtl.c, function.c,
	lists.c, print-rtl.c, print-tree.c, read-rtl.c, rtl-error.c,
	stmt.c, toplev.c, integrate.h, loop.h, machmode.h, rtl.h,
	ssa.h, tree.def: Replace overly specific references to "GNU C"
	and "GNU C Compiler" with references to "GCC".

From-SVN: r68004

	* function.h (struct emit_status): Remove x_last_linenum,
	x_last_filename. Add x_last_location.
	* rtl.h: #include "input.h".
	(NOTE_DATA): New.
	* cfglayout.c (duplicate_insn_chain): Use emit_line_note for line
	number notes.
	* emit-rtl.c (last_linenum, last_filename): Remove.
	(last_location): New.
	(emit_line_note_after): LINE must always be >= 0.
	(emit_line_note): Likewise. Check not duplicate here...
	(emit_note): ... rather than here.
	(emit_line_note_force, force_next_line_note, init_emit): Adjust.
	* integrate.c (expand_inline_function): Use emit_line_note for
	line number notes.
	(copy_insn_list): Likewise.
	* unroll.c (copy_loop_body): Likewise.
	* Makefile.in (RTL_H): Add input.h.

From-SVN: r68002

	* alloc-pool.c: Convert to ISO C90 prototypes.
	* alloc-pool.h: Likewise.
	* alias.c: Likewise.
	* attribs.c: Likewise.
	* bb-reorder.c: Likewise.
	* bitmap.h: Likewise.
	* bitmap.c: Likewise.
	* builtins.c: Likewise.

	* tree.h: Convert prototypes of attribs.c to ISO C90.
	* basic-block.h: Convert prototypes of bb-reorder.c to ISO C90.
	* rtl.h: Convert prototypes of alias.c and builtins.c to ISO C90.
	* expr.h: Convert prototypes of builtins.c to ISO C90.

From-SVN: r67975

	* rtl.h (STORE_FLAG_VALUE): Remove default definition from here.
	* defaults.h (STORE_FLAG_VALUE): Move default definition to here.
	* doc/tm.texi (STORE_FLAG_VALUE): Document the default value.

	* config/alpha/alpha.h (STORE_FLAG_VALUE): Remove definition.
	* config/arc/arc.h (STORE_FLAG_VALUE): Likewise.
	* config/arm/arm.h (STORE_FLAG_VALUE): Likewise.
	* config/cris/cris.h (STORE_FLAG_VALUE): Likewise.
	* config/i370/i370.h (STORE_FLAG_VALUE): Likewise.
	* config/i386/i386.h (STORE_FLAG_VALUE): Likewise.
	* config/i960/i960.h (STORE_FLAG_VALUE): Likewise.
	* config/ia64/ia64.h (STORE_FLAG_VALUE): Likewise.
	* config/ip2k/ip2k.h (STORE_FLAG_VALUE): Likewise.
	* config/m32r/m32r.h (STORE_FLAG_VALUE): Likewise.
	* config/mcore/mcore.h (STORE_FLAG_VALUE): Likewise.
	* config/mips/mips.h (STORE_FLAG_VALUE): Likewise.
	* config/mmix/mmix.h (STORE_FLAG_VALUE): Likewise.
	* config/ns32k/ns32k.h (STORE_FLAG_VALUE): Likewise.
	* config/pa/pa.h (STORE_FLAG_VALUE): Likewise.
	* config/pdp11/pdp11.h (STORE_FLAG_VALUE): Likewise.
	* config/sh/sh.h (STORE_FLAG_VALUE): Likewise.
	* config/sparc/sparc.h (STORE_FLAG_VALUE): Likewise.
	* config/v850/v850.h (STORE_FLAG_VALUE): Likewise.
	* config/xtensa/xtensa.h (STORE_FLAG_VALUE): Likewise.

Co-Authored-By: Zack Weinberg <zack@codesourcery.com>

From-SVN: r67957

	* gcse.c (fis_get_condition): Make it a global function.
	* reload1.c (reload_cse_move2add): Detect implicit sets.
	* rtl.h: Add a prototype for fis_get_condition.

From-SVN: r67814

	* cfglayout.c (insn_scope): New static function
	(block_locators_*, line_locators*, file_locators*): New static varrays.
	(scope_to_insns_initialize): Use them.
	(insn_line, insn_file): New functions.
	(scope_to_insns_finalize): Use insn_scope.
	(prologue_locator, epilogue_locator): New global variables.
	* emit-rt.c (try_split, make_insn_raw, make_jump_insn_raw,
	make_call_insn_raw, emit_copy_of_insn_after): Use locators.
	(emit_insn_after_scope, emit_insn_before_scope
	emit_jump_insn_after_scope, emit_jump_insn_before_scope
	emit_call_insn_after_scope, emit_call_insn_before_scope): Rename to...
	(emit_insn_after_setloc, emit_insn_before_setloc
	emit_jump_insn_after_setloc, emit_jump_insn_before_setloc
	emit_call_insn_after_setloc, emit_call_insn_before_setloc): ... these;
	use locators.
	* final.c (notice_source_line): Use locators.
	(final_start_function): Set initial source file and line.
	(final_scan_insn): Use locators.
	* ifcvt.c (noce_try_store_flag, noce_try_store_flag_constants,
	noce_try_addcc, noce_try_store_flag_mask, noce_try_cmove,
	noce_try_cmove_arith, noce_try_minmax, noce_try_abs,
	noce_process_if_block, find_cond_trap): Likewise.
	* integrate.c (copy_insn_list): Likewise.
	* jump.c (duplicate_loop_exit_test): LIkewise.
	* print-rtl.c (print_rtx): Print locators.
	* recog.c (peephole2_optimize): Likewise.
	* rtl.h (INSN_SCOPE): Remove.
	(emit_insn_after_scope, emit_insn_before_scope
	emit_jump_insn_after_scope, emit_jump_insn_before_scope
	emit_call_insn_after_scope, emit_call_insn_before_scope): Rename to...
	(emit_insn_after_setloc, emit_insn_before_setloc
	emit_jump_insn_after_setloc, emit_jump_insn_before_setloc
	emit_call_insn_after_setloc, emit_call_insn_before_setloc): ... these;
	(insn_file, insn_line, prologue_locator, epilogue_locator): Declare.
	* unroll.c (copy_loop_body): Use locators.
	* function.c (set_insn_locators): New function.
	(thread_prologue_and_epilogue_insns): Set the locators accordingly.

From-SVN: r67637

	* predict.h: Convert to ISO C90 prototypes.
	* predict.c: Likewise.
	* tree-dump.h: Likewise.
	* tree-dump.c: Likewise.
	* diagnostic.h: Likewise.
	* diagnostic.c: Likewise.
	* combine.c: Likewise.

	* rtl.h: Convert prototypes of combine.c to ISO C90.

From-SVN: r67626

	* function.c (FLOOR_ROUND, CEIL_ROUND): Fix.
	* i386.md (gen_pro_epilogue_adjust_stack): Deal with gigantic stack frames.
	(pro_epilogue_adjust_stack_rex64_2): New pattern

	* cfghooks.h, cfghooks.c: New files.
	* Makefile.in (BASIC_BLOCK_H): Depends on cfghooks.h.
	(OBJS): Add cfghooks.o.
	(cfghooks.o): New rule.
	* basic-block.h (split_edge): Rename to rtl_split_edge.
	(verify_flow_info): Rename to rtl_verify_flow_info.
	(cfghooks.h): Included here.
	* cfgrtl.c (split_edge): Renamed rtl_split_edge.
	(verify_flow_info): Renamed rtl_verify_flow_info.
	* toplev.c (rest_of_compilation): Call rtl_register_cfg_hooks.

	* basic-block.h (split_block, split_edge, flow_delete_block,
	redirect_edge_and_branch, redirect_edge_and_branch_force): Delete.
	(flow_delete_block_noexpunge):  Return void.
	* cfg.c (verify_flow_info): New function.
	* cfgcleanup.c (try_simplify_condjump, outgoing_edges_match,
	try_crossjump_to_edge, try_optimize_cfg, delete_unreachable_blocks):
	Use delete_block.
	* cfglayout.c (function_footer): Rename to...
	(cfg_layout_function_footer): ... this variable
	(unlink_insn_chain): Make global.
	(fixup_reorder_chain, record_effective_endpoints): Update.
	(cleanup_unconditional_jumps): Use delete_block.
	(cfg_layout_redirect_edge, cfg_layout_split_block): Move to cfgrtl.c
	(cfg_layout_duplicate_bb): Use redirect_edge_and_branch_force.
	(cfg_layout_initialize, cfg_layout_finalize): Update hooks.
	* cfglayout.h (cfg_layout_redirect_edge, cfg_layout_split_block):  Delete.
	(cfg_layout_function_footer): Declare.
	* cfgloopmanip (split_loop_bb): Do not update RBI.
	(remove_bbs): Use delete_block.
	(loop_reidrect_edge, loop_delete_branch_edge): Use
	redirect_edge_and_branch.
	(create_preheader): Use split_block and redirect_edge_and_branch_force.
	(split_edge_with): Likewise.
	* cfgrtl.c: Include cfglayout.h
	(split_edge): Rename to ...
	(rtl_split_edge) ... this one; make local.
	(redirect_edge_and_branch): Rename to ...
	(rtl_redirect_edge_and_branch) ... this one; make local.
	(redirect_edge_and_branch_force): Rename to ...
	(rtl_redirect_edge_and_branch_force) ... this one; make local.
	(cfg_layout_delete_block, cfg_layout_delete_edge_and_branch_force): New.
	(cfg_layout_redirect_edge_and_branch, cfg_layout_split_block): Move here from
	cfglayout.c; update to directly call RTL counterparts.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hooks): New functions.
	* ifcvt.c (find_cond_trap): Use delete_block.
	(find_if_case_1): Use delete_block.
	(find_if_case_2): Use delete_block.
	* rtl.h (unlink_insn_chain): Declare.
	* toplev.c (rtl_reigster_cfg_hooks): New.

From-SVN: r67535

	* builtins.c (expand_builtin_memcpy): Remove endp argument and endp
	!= 0 handling.  Pass 0 to store_by_pieces.
	(expand_builtin_mempcpy): Add endp argument.  Don't call
	expand_builtin_memcpy, call store_by_pieces resp. move_by_pieces
	directly.  If ignoring result, only do expand_call.
	(expand_builtin_stpcpy): Likewise.  Call expand_builtin_mempcpy
	otherwise.
	(expand_builtin_strncpy, expand_builtin_memset): Adjust
	store_by_pices callers.
	(expand_builtin): Adjust expand_builtin_memcpy and
	expand_builtin_mempcpy callers.
	* expr.c (can_move_by_pieces): New function.
	(move_by_pieces): Add endp argument, return to resp. memory at end
	or one byte earlier depending on endp.
	(store_by_pieces): Likewise.
	(emit_block_move): Adjust call to move_by_pieces.
	(emit_push_insn): Adjust move_by_pieces caller.
	* expr.h (can_move_by_pieces): New prototype.
	(store_by_pieces): Adjust prototypes.
	* rtl.h (move_by_pieces): Adjust prototype.
	* config/mips/mips.c (expand_block_move): Adjust move_by_pieces
	caller.

	* gcc.c-torture/execute/builtins/string-4.c (main_test): Remove
	mempcpy test with post-increments.
	* gcc.c-torture/execute/string-opt-3.c: New test.
	* gcc.dg/string-opt-1.c: New test.

From-SVN: r67358

	* genrecog.c: Use ISO C90 prototypes.
	(nodes_identical): Correct declaration to match prototype.
	(maybe_both_true): Likewise.
	(merge_trees): Likewise.

	* genpeep.c (gen_peephole): Remove #if 0 code.
	Use ISO C90 prototypes.

	* genattrtab.c (copy_rtx_unchanging): Remove #if 0'ed code.
	Remove #if 0'ed function simplify_by_alternatives.
	(optimize_attrs): Remove #if 0'ed code.
	Remove ^L.
	Use ISO C90 prototypes.
	(make_canonical): Remove #if 0'ed code.
	(convert_const_symbol_ref): Remove #if 0'ed function.

	* gen-protos.c (main): Check for argument.

	* rtl.h: Use ISO C90 prototypes for functions from lists.c.

	* params.h: Use ISO C90 prototypes.
	* params.c: Likewise.
	* intl.c: Likewise.
	* intl.h: Likewise.
	* lists.c: Likewise.
	* errors.c: Likewise.
	* errors.h: Likewise.
	* gencodes.c: Likewise.
	* genpreds.c: Likewise.
	* genattr.c: Likewise.
	* gen-protos.c: Likewise.
	* genflags.c: Likewise
	* genconditions.c: Likewise.
	* genautomata.c: Likewise.
	* gencheck.c: Likewise.
	* genconfig.c: Likewise.
	* genconstants.c: Likewise.
	* genemit.c: Likewise.
	* genextract.c: Likewise.
	* gengenrtl.c: Likewise.
	* gengtype.c: Likewise.
	* gengtype.h: Likewise.
	* genopinit.c: Likewise.
	* genoutput.c: Likewise.
	* gensupport.c: Likewise.
	* gensupport.h: Likewise.

From-SVN: r67296

        * rtl.h (TREE_CONSTANT_POOL_ADDRESS_P): Rename from
        DEFERRED_CONSTANT_P.
        * integrate.c (copy_rtx_and_substitute): Update use.
        * varasm.c (build_constant_desc): Set SYMBOL_REF_DECL
        to the copy generated.
        (maybe_output_constant_def_contents): Examine TREE_ASM_WRITTEN
        of the constant to see if we should emit.
        (mark_constant): Similarly.
        (output_constant_def_contents): Set TREE_ASM_WRITTEN.

From-SVN: r66807

	* varasm.c (notice_rtl_inlining_of_deferred_constant): New function.
	* rtl.h: Prototype it.
	* integrate.c (copy_rtx_and_substitute <SYMBOL_REF>): Call it
	when appropriate.

From-SVN: r66762

	* rtl.h (STRING_POOL_ADDRESS_P): Rename to DEFERRED_CONSTANT_P.
	* varasm.c (struct varasm_status): Add deferred_constants field.
	(n_deferred_strings): Delete variable.
	(n_deferred_constants): New #define.
	(struct constant_descriptor_tree): Kill next and label fields.
	(const_hash_table, MAX_HASH_TABLE): Delete.
	(const_desc_htab): New static variable.
	(const_hash): Rename const_desc_hash, and make it fit the
	hashtab.h interface.
	(const_desc_eq): New.
	(const_hash_1, compare_constant): Const-ify arguments.
	(build_constant_desc): Set DEFERRED_CONSTANT_P on all new
	SYMBOL_REFs.  Clarify comments.  Don't set desc->label.
	(output_constant_def): Do the lookup/insert using the
	hashtab.h interface.  Don't muck with n_deferred_constants or
	DEFERRED_CONSTANT_P here.
	Always call maybe_output_constant_def_contents.
	(maybe_output_constant_def_contents): Take a pointer to the
	descriptor, not the EXP and RTL separately.  Return
	immediately if this constant is not deferred.  Defer output of
	everything, except writable string constants.  Update
	n_deferred_constants here.
	(output_constant_def_contents): Now takes just one argument,
	an rtx.  Clear DEFERRED_CONSTANT_P here.
	(mark_constant_pool): Update for rename of n_deferred_strings.
	(mark_constant): Don't clear DEFERRED_CONSTANT_P here.

	(init_varasm_status): Clear p->deferred_constants.
	(init_varasm_once): Call htab_create_ggc for const_desc_htab.

	* gcc.dg/const-elim-1.c, gcc.dg/const-elim-2.c: New testcases.

From-SVN: r66505

	* emit-rtl.c (last_call_insn, add_function_usage_to): New functions.
	* rtl.h (last_call_insn, add_function_usage_to): New prototypes.
	* builtins.c (expand_builtin_apply): Use the new emit-rtl functions.
	* calls.c (emit_call_1): Likewise.
	(expand_call): For calls initializing constant memory, replace
	emission of standalone mem /u clobber with function usage entry.
	* expr.c (emit_block_move_via_libcall): Likewise.
	* cse.c (count_reg_usage, case EXPR_LIST): New case.
	* flow.c (propagate_one_insn): Pass entire operand of
	CALL_INSN_FUNCTION_USAGE to mark_used_regs.
	* integrate.c (try_constants): For CALL_INSNs, substitute constants
	within the FUNCTION_USAGE also.
	* loop.c (prescan_loop): Note clobbers of const mem mentioned in
	FUNCTION_USAGE lists.
	* reload1.c (replace_pseudos_in): Renamed.
	(reload): Use it for clobbers surviving until the end of the reload.

From-SVN: r66429

	* varasm.c (const_str_htab_hash, const_str_htab_eq, STRHASH,
	struct deferred_string, const_str_htab): Kill.
	(n_deferred_strings): New static variable.
	(build_constant_desc): Set SYMBOL_REF_DECL of the new
	symbol_ref to point to the constant.
	(output_constant_def): When a deferred string is forced out,
	just clear STRING_POOL_ADDRESS_P and decrement n_deferred_strings.
	(mark_constant): Likewise.
	(maybe_output_constant_def_contents): When deferring a string
	constant, just set STRING_POOL_ADDRESS_P and increment
	n_deferred_strings.
	(mark_constant_pool): Check n_deferred_strings, not the size
	of const_str_htab.
	(init_varasm_once): No need to create const_str_htab.

	* rtl.def, rtl.h, doc/rtl.texi: Document possibility that
	SYMBOL_REF_DECL points to a constant.

From-SVN: r66133

        PR 8866
        * rtl.h (MEM_NOTRAP_P): New.
        (MEM_COPY_ATTRIBUTES): Copy it.
        * rtlanal.c (may_trap_p): Check it.
        * expr.c (do_tablejump): Set it.
        * doc/rtl.texi (Flags): Document it.

        * cfgrtl.c (try_redirect_by_replacing_jump): Revert last three changes.

From-SVN: r65967

        * Makefile.in (COVERAGE_H): New variable
        (C_OBJS): Add coverage.o
        (coverage.o): New target.
        (profile.o, loop-init.o, sched-ebb.o, predict.o, tracer.o): Adjust
        dependencies.
        (GTFILES): Adjust.
        (gt-coverage.h): New target.
        (gt-profile.h): Remove.
        * profile.h: Remove. Move to ...
        * coverage.h: ... here. New. #include gcov-io.h.
        * gcov-io.h: Move function definitions to ...
        * gcov-io.c: ... here. New.
        * profile.c: Move coverage routines to coverage.c.
        (instrument_edges, get_exec_counts, branch_prob, init_branch_prob,
        end_branch_prob): Adjust.
        * coverage.c: New. Coverage routines from profile.c
        (coverage_counter_ref, coverage_init, coverage_finish,
        coverage_end_function, coverage_begin_output,
        coverage_counter_ref, get_coverage_counts): Define.
        * gcov-dump.c, gcov.c: #include gcov-io.c.
        * libgcov.c: Likewise. Adjust.
        * loop-init.c: Don't #include profile.h
        * tracer.c, predict.c, sched-ebb.c: Adjust #includes.
        * rtl.h: Add coverage prototypes.
        * toplev.c (compile_file): Init coverage, not branch_prob.
        Always call coverage_finish.
        (rest_of_compilation): Call coverage_end_function.

From-SVN: r65897

	* emit-rtl.c (subreg_hard_regno):  Check that register is representable.
	* reload.c (reload_inner_reg_of_subreg):  When register is not
	representable, reload the whole thing.
	(find_reloads): Likewsie.
	* rtlanal.c (subreg_representable_p):  New function.

	* profile.c (compute_branch_probabilities):  Cleanup sanity checking;
	allow negative probabilities for edges from the call to exit.
	(branch_prob): Do not add fake edges for functions that may return twice

From-SVN: r65757