2009-05-11  J"orn Rennecke  <joern.rennecke@arc.com>

	* genmodes.c (drop_mode): handle !old_contained.

	* genmodes.c (find_mode): Set target field for to-be searched mode.
	(eq_mode): Also consider target.
	(drop_mode): New function.
	(fixup_target_modes): Implement commoning of equivalent modes.
	Mangle mode names for other-target modes.
	(make_complex_modes): When processing target-specific input, don't
	make modes for other targets.
	(make_complex_modes, make_vector_modes): Tag new modes with the same
	target field as the modes that they are made from.
	(make_partial_integer_mode): Make error message clearer.
	(emit_insn_modes_h): Remove mangling of mode name.
	* Makefile.in (extra-modes.h): Use *-extra-modes.h instead of
	extra_modes_blurb.
	(extra_modes_blurb): Remove rule.
	[!TA] (%-extra-modes.h): New rule.
	* config/rs6000/t-rs6000 (rs6000-c.o): Use CXXX.
	* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add casts
	to enum rs6000_builtins.

2009-05-08  J"orn Rennecke  <joern.rennecke@arc.com>

	* doc/extend.texi (target_arch): Document new attribute.
	* targhooks.c (STRINGIFY1, STRINGIFY): Delete.
	(default_override_options): Use this_targetm.name for error message.
	* flags.h (multi-target.h): Include.
	(flag_ira_algorithm): Mark as target specific.
	* multi-target.h (EXTRA_TARGETS_EXPAND_COMMA): Add trailing comma.
	* tree.h (expand_function_end): Mark as target specific.
	(expand_function_start, stack_protect_prologue): Likewise.
	(stack_protect_epilogue): Likewise.
	(allocate_struct_function): Mark as not target specific.
	* target.h (struct gcc_target): Add new member name.
	* toplev.c (targetm_array): Add zero delimiter.
	(asm_out_file): Don't define for EXTRA_TARGET.
	(process_options): Always initialize debug_hooks.
	* regs.h (regstat_n_sets_and_refs): Mark as target specific.
	(REG_N_REFS, REG_N_SETS, regstat_init_n_sets_and_refs): Likewise.
	(regstat_free_n_sets_and_refs, regstat_compute_ri): Likewise.
	(regstat_free_ri, regstat_get_setjmp_crosses): LIkewise.
	(regstat_compute_calls_crossed, regstat_free_calls_crossed): Likewise.
	(reg_renumber, have_regs_of_mode, reg_raw_mode): Likewise.
	* opts.c: Include multi-target.h.  Add START_TARGET_SPECIFIC and
	END_TARGET_SPECIFC markers.  Add #ifndef EXTRA_TARGET / #endif
	directives.
	(decode_options): Use this_targetm for target-specific processing.
	Do an EXTRA_TARGETS_CALL of self.
	* function.c (allocate_struct_function_1): New function, broken out of:
	(allocate_struct_function).
	(set_cfun): Update target_pnt.
	[!EXTRA_TARGET] (allocate_struct_function_1_array): New const array.
	[EXTRA_TARGET] (allocate_struct_function): Don't define.
	(allocate_struct_function): Initialize cfun->target_arch and set
	targetm_pnt.
	* varasm.c (last_arch): New variable.
	(assemble_start_function): Emit .arch directive when targetm changed
	since the last function was emitted, and update last_arch.
	* ira.c (setup_cover_and_important_classes): Use this_targetm.
	* ira.h (ira_init_once, ira_init): Mark as target specific.
	(ira_finish_once, ira_eliminate_regs): Likewise.
	(ira_sort_regnos_for_alter_reg, ira_mark_allocation_change): Likewise.
	(ira_mark_memory_move_deletion, ira_reuse_stack_slot): Likewise.
	(ira_mark_new_stack_slot, ira_better_spill_reload_regno_p: Likewise.
	* target-def.h (TARGET_INITIALIZER): Add TARGET_NAME.
	* rtl.h (insn_locators_alloc): Mark as target specific.
	(insn_locators_free, insn_locators_finalize): Likewise.
	(set_curr_insn_source_location, set_curr_insn_block): Likewise.
	(curr_insn_locator): Likewise.
	* output.h (asm_out_file): Don't mark as target specific.
	* c-common.c (handle_target_arch_attribute): New function.
	(c_common_attribute_table): Add target_arch attribute entry.
	* Makefile.in (OBJS-common): Move opts.o from here...
	(OBJS-rtl):  ... to here.
	($(out_object_file)): Add -DTARGET_NAME=\"$(target_noncanonical)\"
	to rule.
	* passes.c (execute_one_pass): Move dispatch code from here...
	(execute_pass_list): ... to here.

2009-05-06  J"orn Rennecke  <joern.rennecke@arc.com>

	* targhooks.c (default_override_options): New function.
	(STRINGIFY1, STRINGIFY): New macros.
	* targhooks.h (default_override_options): Declare.
	* tree-pass.h: Include multi-target.h.
	Mark rtl passes and pass_rest_of_compilation as target specific.
	* target.h: Include multi-target.h.
	(struct target_option_hooks): Add override member.
	(targetm): change into a #define.
	(targetm_pnt, targetm_array): Declare.
	(this_targetm): Declare.
	* toplev.c [EXTRA_TARGET] (general_init, do_compile): Don't declare.
	(process_options): No longer static.
	[!EXTRA_TARGET] (targetm_array, targetm_pnt): Define and inititialize.
	(general_init): Add ATTRIBUTE_UNUSED to argv0.
	(process_options): Guard general code with #ifndef EXTRA_TARGET.
	Use this_targetm.target_option.override instead of OVERRIDE_OPTIONS.
	(do_compile): Do an EXTRA_TARGETS_CALL of process_options.
	(opth-gen.awk): Also make variables target specific that are for
	options named AllTarget.
	* common.opt (align_functions, align_jumps): Mark with AllTarget.
	(align_loops, flag_data_sections, flag_delayed_branch): Likewise.
	(flag_no_function_cse, flag_function_sections): Likewise.
	(flag_leading_underscore, flag_omit_frame_pointer): Likewise.
	(flag_rename_registers, flag_schedule_insns): Likewise.
	(flag_schedule_insns_after_reload): Likewise.
	* target-def.h [!TARGET_OVERRIDE_OPTIONS] (TARGET_OVERRIDE_OPTIONS):
	Define.
	(TARGET_OPTION_HOOKS): Include TARGET_OVERRIDE_OPTIONS.
	* reg-stack.c: Include multi-target.h and mark code as target specific.
	* reginfo.c (init_reg_sets): Make EXTRA_TARGETS_CALL of self.
	* Makefile.in ($(out_object_file)): Add -Dtargetm=this_targetm.
	* passes.c (gate_rest_of_compilation): Make target specific.
	(pass_rest_of_compilation): Likewise.
	* config/sh/sh.h (OVERRIDE_OPTIONS): Delete, moved contents to:
	* config/sh/sh.c (sh_override_options): New function.
	Make manipulation of global flags dependent on main_target.
	(TARGET_OVERRIDE_OPTIONS): Redefine.
	* config/arc/arc-protos.h (arc_init): Don't declare.
	* config/arc/arc.c (arc_override_options): New function.
	(TARGET_OVERRIDE_OPTIONS): Redefine.
	* config/arc/arc.h (OVERRIDE_OPTIONS): Don't define.

2009-05-01  J"orn Rennecke  <joern.rennecke@arc.com>

	* regrename.c: Include "multi-target.h" and add START_TARGET_SPECIFIC
	and END_TARGET_SPECIFC markers.
	* loop-unswitch.c, sched-ebb.c, fwprop.c, dwarf2asm.c: Likewise.
	* dwarf2asm.h, ira-conflicts.c, targhooks.c, targhooks.h: Likewise.
	* regstat.c, see.c, machmode.h, rtlhooks.c, optabs.c: Likewise.
	* postreload-gcse.c, optabs.h, postreload.c, reload.c: Likewise.
	* tree.h, reload.h, rtlanal.c, ddg.c, final.c, builtins.c: Likewise.
	* cfghooks.c, cfghooks.h, cfgloopanal.c, cfg.c: Likewise.
	* auto-inc-dec.c, toplev.c, toplev.h, reorg.c, regs.h: Likewise.
	* df-scan.c, haifa-sched.c, dojump.c, dbxout.c, df-core.c: Likewise.
	* mode-switching.c, modulo-sched.c, caller-save.ci, graph.c: Likewise.
	* ira-int.h, cse.c, web.c, ira-color.c, sel-sched.c: Likewise.
	* loop-init.c, cfganal.c, ifcvt.c, jump.c, dwarf2out.c: Likewise.
	* expr.c, cfgbuild.c, hard-reg-set.h, predict.c, predict.h: Likewise.
	* recog.c, recog.h, dse.c, sel-sched-ir.c, sel-sched-ir.h: Likewise.
	* ira-lives.c, regmove.c, sel-sched-dump.c: Likewise.
	* sel-sched-dump.h, function.c, function.h, print-rtl.c: Likewise.
	* df.h, sdbout.c, stor-layout.c, rtlhooks-def.h, ira-emit.c: Likewise.
	* df-byte-scan.c, gcse.c, alias.c, alias.h, init-regs.c: Likewise.
	* ira-build.c, loop-unroll.c, ggc.h, insn-addr.h, calls.c: Likewise.
	* loop-doloop.c, rtl-factoring.c, lower-subreg.c, expmed.c: Likewise.
	* bt-load.c, except.c, except.h, emit-rtl.c, cfgexpand.c: Likewise.
	* cselib.c, cfgcleanup.c, simplify-rtx.c, explow.c: Likewise.
	* loop-invariant.c, loop-iv.c, cfglayout.c, varasm.c, ira.c: Likewise.
	* sched-deps.c, ira.h, rtl.c, ira-costs.c, rtl.h: Likewise.
	* integrate.c, sched-int.h, output.h, combine.c: Likewise.
	* fixed-value.h, addresses.h, bb-reorder.c, stack-ptr-mod.c: Likewise.
	* resource.c, var-tracking.c, resource.h, cfgloop.h: Likewise.
	* df-problems.c, reginfo.c, sched-rgn.c, basic-block.h: Likewise.
	* sched-vis.c, passes.c, config/sh/sh-protos.h: Likewise.
	* config/sh/sh.c, config/sh/sh.h, config/arc/arc.c: Likewise.
	* config/arc/arc.h, combine-stack-adj.c, cfgrtl.c, stmt.c: Likewise.
	* dce.c, reload1.c: Likewise.
	* targhooks.c: Add #ifndef EXTRA_TARGET / #endif directives.
	* cfghooks.c, toplev.c, expr.c, calls.c, emit-rtl.c: Likewise.
	* explow.c, passes.c: Likewise.
	* targhooks.h: (default_branch_target_register_class): Return int
	instead of enum reg_class.
	(default_secondary_reload): Likewise.
	* config/sh/sh-protos.h (sh_secondary_reload): Likewise.
	* config/sh/sh.c (sh_secondary_reload): Likewise.
	* targhooks.h: (default_ira_cover_classes): Return const int *
	instead of const enum reg_class *.
	* targhooks.c (default_ira_cover_classes): Likewise.
	* genrecog.c (write_header, main): Make generated file include
	"multi-target.h" and have START_TARGET_SPECIFIC and END_TARGET_SPECIFC
	markers.
	* genopinit.c (main): Likewise.
	* genoutput.c (output_prologue, main): Likewise.
	* genextract.c (print_header, main): Likewise.
	* genautomata.c (main): Likewise.
	* genemit.c (main): Likewise.
	* genpeep.c (main): Likewise.
	* genattrtab.c (main): Likewise.
	* genattr.c (gen_attr, main): Likewise.
	* optc-gen.awk: Likewise.
	* genmodes.c (emit_insn_modes_c_header, emit_insn_modes_c): Likewise.
	(emit_min_insn_modes_c_header, emit_min_insn_modes_c): Likewise.
	* genflags.c (main): Likewise.
	* genpreds.c (write_tm_constrs_h, write_insn_preds_c): Likewise.
	* opth-gen.awk: Likewise.
	* gengtype.c (open_base_files): Make generated file include
	"multi-target.h" and have START_TARGET_SPECIFIC markers.
	(write_func_for_structure, write_roots): FIXME: effectively comment
	for EXTRA_TARGET out except for creating the files.
	(main): Emit END_TARGET_SPECIFIC markers.
	* multi-target.h: New file.
	* mkconfig.sh: Support function-like DEFINES.
	In <target>/<target>-protos.h, wrap header files after multi-target.h
	up to but excluding tm-preds.h in START_TARGET_SPECIFIC /
	END_TARGET_SPECIFIC.
	* tree.h (strip_float_extensions): Delete duplicate declaration.
	* reload.c (push_secondary_reload): Cast arguments / return value of
	targetm.secondary_reload from / to enum reg_class.`
	(secondary_reload_class): Likewise.
	* ira-costs.c (copy_cost): Likewise.
	* reload1.c (emit_input_reload_insns): Likewise.
	* tree-pass.h (rtl_dispatch_pass): New struct.
	(TODO_arch_dispatch): New macro.
	(pass_expand): Now has type rtl_dispatch_pass.
	* tree-scalar-evolution.h (block_before_loop): Don't define for
	EXTRA_TARGET.
	(instantiate_parameters, get_chrec_loop): Likewise.
	* target.h (struct gcc_target): Change branch_target_register_class
	and ira_cover_classes to avoid the target-specific enum reg_class.
	* bt-load.c (branch_target_register_class): Likewise.
	* ddg.h, dbxout.h: Enclose declarations in namespace EXTRA_TARGET.
	* expr.h, cselib.h, cfglayout.h, gimple.h: Likewise
	* toplev.c (init_random_seed): No longer static.
	(lang_dependent_init_target): Likewise.
	(backend_init): No longer static.  Do an EXTRA_TARGETS_CALL of self.
	(lang_dependent_init): Likewise.
	(target_reinit): Do an EXTRA_TARGETS_CALL of self.
	* toplev.h (init_random_seed): Declare,
	* machmode.def: Include "extra-modes.h" instead of EXTRA_MODES_FILE.
	* configure.ac (with_extra_target_list): Add AC_SUBST statement.
	* configure: Regenerate.
	* function.c (cfun): Don't define for EXTRA_TARGET.
	(init_function_start): Do an EXTRA_TARGETS_CALL of self.
	* function.h (struct function): Add new member target_arch.
	* genmodes.c (struct mode_date): New member target.
	(blank_mode): Add initializer for target member.
	(target): New variable.
	(new_mode): Initialize target member.
	(fixup_target_modes): New function.
	(calc_wider_mode): Skip (other-)target modes.
	(print_maybe_const_decl): Add declaration for const definition.
	Don't expect %s in type anymore.  Changed all users.
	(emit_insn_modes_h): Prefix target modes names with the target name.
	Don't include target modes in search for MIN_/MAX_ modes.
	(emit_mode_wider): Skip target modes.
	(emit_real_format_for_mode): Likewise.
	(main): Call fixup_target_modes.
	* emit-rtl.c (const_int_htab, const_double_htab): No longer static
	* cfgexpand.c (pass_expand): Change type to struct rtl_dispatch_pass.
	Set TODO_arch_dispatch in todo_flags_finish.
	Initialize target_variants.
	* ira.c (setup_cover_and_important_classes): Change type of
	cover_classes to int *.
	* README-multi-target: New file.
	* rtl.h (struct function): Remove forward declaration.
	(delete_insn): Move declaration to correct block.
	TDEP-SOURCES: New file.
	* Makefile.in: Use $(TA) prefix for taget-specific files that are
	(compiled to be ) included in libbackend.a.
	(gcc_config_arguments, TA, TARGET_NUM, CXXX, OBJS-rtl): Set.
	(EXTRA_TARGETS, NUM_TARGETS, empty, space): Likewise.
	(EXTRA_TARGET_RULES, enumerate): Likewise.
	(out_object_file) [EXTRA_TARGET]: Set to $(TA)xout.o.
	(OBJS-common): Use $(OBJS-rtl), and add EXTRA_TARGETS files.
	(cs-tm.h): Add definitions to indicate total number of targets, the
	ordinary number of current extra target, and a macro to call all
	the extra targets to DEFINES.
	(cs-tm_p.h): Add multi-target.h to HEADERS.
	($(out_object_file)): Use CXXX.
	(build/%.o) [EXTRA_TARGET]: Add -DEXTRA_TARGET=$(EXTRA_TARGET).
	(build/genmodes.o): Add output_target defintion to BUILD_CPPFLAGS.
	Depend on extra-modes.h instead of on $(extra_modes_file).
	(extra-modes.h, extra_modes_blurb, COMMON_ABI): New rules.
	(intl/config.intl, make-OBJS-rtl): Likewise.
	[EXTRA_TARGET]: Evaluate EXTRA_TARGET_RULES for each target in
	EXTRA_TARGETS with substitutions.
	* basic-block.h: Fix location of declarations to properly indicate
	where the functions are defined.
	* passes.c (init_optimization_passes) [!EXTRA_TARGET]: Do an
	EXTRA_TARGETS_CALL of self.
	(init_optimization_passes) [EXTRA_TARGET]: Initialize
	pass_expand.target_variants array member for current target.
	(execute_one_pass): Handle TODO_arch_dispatch flag.
	* config/sh/sh.c (struct save_entry_s): Change type of mode to int.

	* config/m32r/m32r-protos.h (m32r_compute_function_type): Make this
	depend on RTX_CODE being defined instead of on TREE_CODE being defined.