* cfgcleanup.c (outgoing_edges_match): Compare the jump tables.
	(try_crossjump_to_edge): Replace refereces to one jump table by
	references to identical jump table.
	* loop.c (load_mems): Moved setting the JUMP_LABEL to replace_label.
	(replace_label): Moved to rtlanal.c.
	(struct rtx_pair): Moved to rtl.h.
	* rtl.h (struct rtx_pair): Moved from loop.c.
	(replace_label): New extern function.
	(subrtx_p): New extern function.
	(tablejump_p): New extern function.
	* rtlanal.c (replace_label): Moved from loop.c.
	(subrtx_p_1): New static function.
	(subrtx_p): New function.
	(tablejump_p): New function.

From-SVN: r64096

	* emit-rtl.c (set_reg_attrs_for_parm): New function.
	* rtl.h (set_reg_attrs_for_parm): New exported function.
	* function.c (assign_parms): Use set_reg_attrs_for_parm instead of
	set_reg_attrs_from_mem.

From-SVN: r63548

	* toplev.c (flag_sched2_use_superblocks, flag_sched2_use_traces):  New global variables.
	(lang_independent_options):  Add -fsched2-use-superblocks -fsced2-use-traces.
	(rest_of_compilation): Deal with it.
	* invoke.texi (-fsched2-use-traces, fsched2-use-superblocks):  Declare.
	* flags.h (flag_sched2_use_superblocks, flag_sched2_use_traces): Declare.
	* rtl.h (reg_to_stack):  Update prototype.
	* reg-stack.c (reg_to_stack): Return when something has changed;
	update liveness when executing after superblock scheduling.

	* combine.c (simplify_shift_const):  Simplify few special cases
	into constants.

From-SVN: r63183

	* combine.c (distribute_notes): Kill REG_EXEC_COUNT.
	* rtl.c (reg_note_name): Likewise.
	* rtl.h (enum reg_note): Likewise.
	* doc/invoke.texi: Likewise.
	* doc/rtl.texi: Likewise.

From-SVN: r63157

	* genconfig.c (main): Generate CC0_P.
	* rtl.h (CC0_P): Remove.

From-SVN: r62423

	* emit-rtl.c (reg_attrs_htab): New static variable.
	(reg_attrs_htab_hash, reg_attrs_htab_eq, get_reg_attrs): New static
	functions.
	(reg_rtx): Do not maintain regno_decl.
	(gen_rtx_REG_offset, set_reg_attrs_from_mem, set_delc_rtx,
	set_mem_attrs_from_reg): New global function.
	(init_emit): Do not initialize regno_decl.
	(init_emit_once): initialize reg_attrs_htab.
	* final.c (alter_subreg): Do not replace REG by SUBREG.
	(gen_mem_expr_from_op): Improve output.
	(output_asm_operands): Likewise.
	* function.c (assign_params): Do not set REGNO_DECL.
	* function.h (struct function): Kill regno_decl.
	(REGNO_DECL): Kill.
	* gengtype.c (adjust_field_rtx_def): Handle new field of reg.
	* print_rtl.c (print_rtx): Output REG information.
	* regclass.c (reg_scan_mark_refs): Update attrs.
	* reload1.c (alter_reg): Likewise.
	* simplify_rtx.c (simplify_subreg): Likewise.
	* stmt.c (expand_decl): Likewise.
	* rtl.def (REG): Add new field.
	* rtl.h (struct reg_attrs): New.
	(rtunion_def): At rtreg.
	(X0MEMATTR): Add checking.
	(X0REGATTR, REG_ATTRS, REG_EXPR, REG_OFFSET): New macro.
	(set_reg_attrs_from_mem, set_mem_attrs_from_reg, gen_rtx_REG_offset):
	Declare.
	* tree.h (SET_DECL_RTL): Call set_decl_rtl.

From-SVN: r61741

	PR optimization/8423
	* cse.c (fold_rtx): Only eliminate a CONSTANT_P_RTX to 1 when
	its argument is constant, or 0 if !flag_gcse.
	* simplify-rtx.c (simplify_rtx): Convert CONSTANT_P_RTX to 1
	if it's argument is constant.
	* gcse.c (want_to_gcse_p): Ignore CONSTANT_P_RTX nodes.
	(hash_scan_set): Don't record CONSTANT_P_RTX expressions.
	(do_local_cprop): Don't propagate CONSTANT_P_RTX constants.
	* builtins.c (purge_builtin_constant_p): New function to force
	instantiation of any remaining CONSTANT_P_RTX nodes.
	* rtl.h (purge_builtin_constant_p): Prototype here.
	* toplev.c (rest_of_compilation): Invoke purge_builtin_constant_p
	pass after GCSE and before loop.
	(flag_gcse): No longer static.
	* flags.h (flag_gcse): Prototype here.

From-SVN: r61642

gcse.c (one_cprop_pass): Change function arguments to take both cprop_jumps and bypass_jumps flags...


	* gcse.c (one_cprop_pass): Change function arguments to take both
	cprop_jumps and bypass_jumps flags instead of just alter_jumps.
	(gcse_main): Update calls to one_cprop_pass, disabling bypassing.
	(bypass_jumps): New function to perform separate jump bypassing pass.
	* rtl.h (bypass_jumps): Add function prototype.
	* timevar.def (TV_BYPASS): New timing variable.
	* toplev.c (enum dump_file_index): Add new entry DFI_bypass.
	(dump_file): New entry for the bypass RTL dump file.
	(rest_of_compilation): Insert new jump bypassing optimization
	pass after loop.
	* doc/passes.texi: Document new pass.

From-SVN: r61374

	* i386.md (adddi3_carry_rex64, subdi3_carry_rex64): Name pattern.
	(addhi3_carry, addqi3_carry, subhi3_carry, subqi3_carry): New patterns.
	(add??cc): New expanders.
	* i386.c (expand_int_addcc): New function.
	* i386-protos.h (expand_int_addcc): Declare.

	* alias.c (memory_modified_1): New static function.
	(memory_modified): New static varaible.
	(memory_modified_in_insn_p): New global function.
	* rtl.h (memory_modified_in_insn_p): Declare.
	* rtlanal.c (modified_between_p, modified_in_p): Be smart about memory
	references.

	* expr.h (emit_conditional_add): Declare.

From-SVN: r61038

       * ssa-dce.c (EXECUTE_IF_UNNECESSARY): Verify INSN is an
        INSN_P before checking to see if it is dead.
        (mark_all_insn_unnecessary): Similarly.
        (ssa_eliminate_dead_code): Similarly.
        * rtl.h (struct rtx_def): Update comments for in_struct usage
        in dead code elimination pass.
        (INSN_DEAD_CODE_P): Allow JUMP_INSN and CALL_INSN as well.

From-SVN: r60520

	* regmove.c: Fix comment typos.
	* reload.c: Likewise.
	* reload1.c: Likewise.
	* resource.c: Likewise.
	* rtl.def: Likewise.
	* rtl.h: Likewise.
	* rtlanal.c: Likewise.
	* sched-deps.c: Likewise.
	* sched-rgn.c: Likewise.
	* sibcall.c: Likewise.
	* simplify-rtx.c: Likewise.
	* ssa-ccp.c: Likewise.
	* ssa.c: Likewise.
	* stmt.c: Likewise.
	* stor-layout.c: Likewise.
	* system.h: Likewise.
	* tlink.c: Likewise.
	* toplev.c: Likewise.
	* tracer.c: Likewise.
	* tree-inline.c: Likewise.
	* tree.c: Likewise.
	* tree.h: Likewise.
	* unroll.c: Likewise.
	* varasm.c: Likewise.

From-SVN: r60473

From-SVN: r60174

	* expr.c (gen_group_rtx, emit_group_move): New functions.
	* expr.h (gen_group_rtx, emit_group_move): Prototype.
	* function.c (expand_function_start): Use gen_group_rtx to create a
	PARALLEL rtx to hold the return value when the real return rtx is a
	PARALLEL.
	(expand_function_end): Use emit_group_move to move the return value
	from a PARALLEL to the real return registers.
	* rtl.h (REG_FUNCTION_VALUE_P): Allow function values to be returned
	in PARALLELs.

From-SVN: r59554

2002-11-04  Aldy Hernandez  <aldyh@redhat.com>

	* hard-reg-set.h (REG_CANNOT_CHANGE_MODE_P): New.

	* config/rs6000/rs6000.h (CLASS_CANNOT_CHANGE_MODE_P): Remove.
	(CLASS_CANNOT_CHANGE_MODE): Remove.
	(CANNOT_CHANGE_MODE_CLASS): New.

	* config/alpha/alpha.h: Same.

	* config/ia64/ia64.h: Same.

	* config/mips/mips.h: Same.

	* config/s390/s390.h: Same.

	* config/sh/sh.h: Same.

	* config/pa/pa64-regs.h: Same.

	* config/sh/sh-protos.h (sh_cannot_change_mode_class): Add prototype.

	* config/sh/sh.c (sh_cannot_change_mode_class): New.

	* config/mips/mips-protos.h (mips_cannot_change_mode_class): Add
	prototype.

	* config/mips/mips.c (mips_cannot_change_mode_class): New.

	* doc/tm.texi (Register Classes): Remove
	CLASS_CANNOT_CHANGE_MODE and CLASS_CANNOT_CHANGE_MODE_P.
	Document CANNOT_CHANGE_MODE_CLASS.

	* reload.c (push_reload): Use CANNOT_CHANGE_MODE_CLASS.
	(push_reload): Same.

	* simplify-rtx.c (simplify_subreg): Same.

	* reload1.c (choose_reload_regs): Same.

	* recog.c (register_operand): Same.

	* regrename.c (mode_change_ok): Change to use new
	CANNOT_CHANGE_MODE_CLASS infrastructure.

	* regclass.c (cannot_change_mode_set_regs): New.
	Declare subregs_of_mode.
	(regclass): Use subregs_of_mode.
	Remove references to reg_changes_mode.
	(init_reg_sets_1): Remove class_can_change_mode and
	reg_changes_mode code.
	(invalid_mode_change_p): New.
	(dump_regclass): Use invalid_mode_change_p instead of
	class_can_change_mode.
	(regclass): Same.
	(record_operand_costs): Do not set reg_changes_mode.

	* local-alloc.c (struct qty): Remove changes_mode field.
	(alloc_qty): Remove changes_mode initialization.
	(update_qty_class): Remove set of changes_mode.
	(find_free_reg): Use subregs_of_mode.

	* global.c (find_reg): Use subregs_of_mode info.

	* rtl.h (cannot_change_mode_set_regs): New prototype.
	(invalid_mode_change_p): Same.
	(REG_CANNOT_CHANGE_MODE_P): New macro.

	* flow.c (mark_used_regs): Calculate subregs_of_mode.  Remove
	REG_CHANGES_MODE.
	(life_analysis): Clear subregs_of_mode.

	* combine.c (subst): Pass class to CLASS_CANNOT_CHANGE_MODE_P.
	Remove use of CLASS_CANNOT_CHANGE_MODE.
	(simplify_set): Same.
	(gen_lowpart_for_combine): Calculate subregs_of_mode.  Remove
	REG_CHANGES_MODE.

	* regs.h: Add extern for subregs_of_mode;
	Include hard-reg-set and basic-block.
	(REG_CHANGES_MODE): Delete.

From-SVN: r58794

From-SVN: r57902

	* reload.c (push_reload): Handle subregs and secondary memory.
	* reload1.c (gen_reload): Likewise.

	* jump.c (reg_or_subregno): New function.
	* rtl.h (reg_or_subregno): Declare
	* unroll.c (find_splittable_givs): Handle subregs.

From-SVN: r57663

	* c-common.h: Follow spelling conventions.
	* cpplex.c: Likewise.
	* cpplib.h: Likewise.
	* gthr-dce.h: Likewise.
	* gthr-posix.h: Likewise.
	* optabs.c: Likewise.
	* output.h: Likewise.
	* profile.c: Likewise.
	* protoize.c: Likewise.
	* ra-rewrite.c: Likewise.
	* real.c: Likewise.
	* recog.c: Likewise.
	* reg-stack.c: Likewise.
	* regclass.c: Likewise.
	* regmove.c: Likewise.
	* reload.c: Likewise.
	* reload.h: Likewise.
	* reload1.c: Likewise.
	* reorg.c: Likewise.
	* resource.c: Likewise.
	* rtl.h: Likewise.
	* rtlanal.c: Likewise.

From-SVN: r57555

        * real.c (real_hash): New.
        * real.h: Declare it.
        * cse.c (canon_hash): Use it.
        * cselib.c (hash_rtx): Likewise.
        * emit-rtl.c (const_double_htab_hash): Likewise.
        * rtl.h (CONST_DOUBLE_REAL_VALUE): New.
        * varasm.c (struct rtx_const): Reduce vector size; separate
        integer and fp vectors.
        (HASHBITS): Remove.
        (const_hash_1): Rename from const_hash.  Use real_hash.  Do not
        take modulus MAX_HASH_TABLE.
        (const_hash): New.  Do take modulus MAX_HASH_TABLE.
        (output_constant_def): Do not take modulus MAX_HASH_TABLE.
        (SYMHASH): Don't use HASHBITS.
        (decode_rtx_const): Copy only active bits from REAL_VALUE_TYPE.
        Fix CONST_VECTOR thinko wrt fp vectors.  Fix kind comparison.
        (simplify_subtraction): Fix kind comparison.
        (const_hash_rtx): Return unsigned int.  Don't use HASHBITS.
        Use a union to pun integer array.
        * config/rs6000/rs6000.c (rs6000_hash_constant): Use real_hash;
        only hash two words of integral CONST_DOUBLE.

From-SVN: r57356

2002-09-12  Geoffrey Keating  <geoffk@apple.com>

	* ggc-common.c (ggc_mark_rtx_children_1): Update for changed name
	mangling.

	The following changes are merged from pch-branch:

	* doc/gty.texi (GTY Options): Document %a.
	* gengtype.c (do_scalar_typedef): New function.
	(process_gc_options): Handle `length' option.
	(set_gc_used_type): A pointer to an array of structures doesn't
	qualify as a pointer to a structure.
	(output_escaped_param): Add `%a' escape.
	(write_gc_structure_fields): Allow 'desc' on array of unions.
	(main): Define `uint8', `jword' and `JCF_u2' as scalars; use
	do_scalar_typedef.

	* gengtype.c (enum rtx_code): Make global.
	(rtx_format): Make global.
	(rtx_next): New.
	(gen_rtx_next): New.
	(write_rtx_next): New.
	(adjust_field_rtx_def): Skip fields marked by chain_next.
	(open_base_files): Delete redundant prototype.
	(write_enum_defn): New.
	(output_mangled_typename): Correct abort call.
	(write_gc_marker_routine_for_structure): Handle chain_next and
	chain_prev options.
	(finish_root_table): Don't output redundant \n.
	(main): Call gen_rtx_next, write_rtx_next, write_enum_defn.
	* c-tree.h (union lang_tree_node): Add chain_next option.

	* gengtype.h (NUM_PARAM): New definition.
	(struct type): For TYPE_PARAM_STRUCT, allow multiple parameters.
	* gengtype.c (find_param_structure): New.
	(adjust_field_type): Handle param<n>_is option.
	(process_gc_options): Detect use_params option.  Update callers.
	(set_gc_used_type): Add 'param' parameter, update callers.  Handle
	'use_params' option.
	(open_base_files): Add splay-tree.h to list of files included.
	(output_mangled_typename): New.
	(write_gc_structure_fields): Update 'param' parameter to support
	multiple parameters.  Change name mangling.  Allow parameterized
	fields to have an apparent scalar type.  Handle param<n>_is options,
	use_param option.
	(write_gc_marker_routine_for_structure): Update for change to name
	mangling.  Better guess the output file for parameterized types.
	(write_gc_types): Update for change to name mangling.
	(write_gc_root): Update for change to name mangling.  Handle (ignore)
	param<n>_is options.
	* doc/gty.texi (GTY Options): Add description of param<n>_is
	options, use_params option.
	* ggc.h (ggc_mark_rtx): Update for changed name mangling.
	* gengtype-lex.l: Produce token for param<n>_is.
	* gengtype-yacc.y: Parse param<n>_is.

	* gengtype.c (adjust_field_tree_exp): Don't name a variable 'rindex'.

	* rtl.c: Update comment describing rtx_format.
	* rtl.h (union rtunion): Separate definition and typedef.
	(struct rtx_def): Use gengtype to mark.
	* Makefile.in (gengtype.o): Also depend on rtl.def.
	* ggc.h (ggc_mark_rtx_children): Delete prototype.
	(ggc_mark_rtx): Change to alias of gengtype-generated routine.
	* ggc-common.c (ggc_mark_rtx_children): Delete.
	(ggc_mark_rtx_children_1): Delete.
	(gt_ggc_m_rtx_def): Delete.
	* gengtype.c (adjust_field_rtx_def): New.
	(adjust_field_type): Call adjust_field_rtx_def.
	(write_gc_structure_fields): Add 'default' case to switch if none
	is specified; remove unused code.

	* tree.h (struct tree_exp): Update for change to meaning
	of special.
	* gengtype.c (adjust_field_tree_exp): New function.
	(adjust_field_type): Handle `tree_exp' special here.
	(write_gc_structure_fields): Don't handle `tree_exp' special here.
	Handle new `dot' option.

	* gengtype.h: Make `info' a pointer-to-const.
	* gengtype-yacc.y (yacc_ids): Use xasprintf.

	* gengtype.c (write_gc_structure_fields): Remove implementation
	of `always' option, add `default' option.
	* doc/gty.texi (GTY Options): Remove documentation of `always',
	add `default'.

Index: gcc/cp/ChangeLog
2002-09-12  Geoffrey Keating  <geoffk@apple.com>

	* cp-tree.h (union lang_tree_node): Add chain_next option.

Index: gcc/f/ChangeLog
2002-09-12  Geoffrey Keating  <geoffk@apple.com>

	* com.c (union lang_tree_node): Add chain_next option.

Index: gcc/java/ChangeLog
2002-09-12  Geoffrey Keating  <geoffk@apple.com>

	* java-tree.h (union lang_tree_node): Add chain_next option.

From-SVN: r57206

	* basic-block.h: Fix comment formatting.
	* c-common.c: Likewise.
	* c-common.h: Likewise.
	* c-lex.c: Likewise.
	* c-pretty-print.c: Likewise.
	* cfglayout.c: Likewise.
	* cfgloop.c: Likewise.
	* defaults.h: Likewise.
	* et-forest.c: Likewise.
	* explow.c: Likewise.
	* function.h: Likewise.
	* gcov.c: Likewise.
	* genattrtab.c: Likewise.
	* gengtype.c: Likewise.
	* ifcvt.c: Likewise.
	* libgcc2.c: Likewise.
	* loop.c: Likewise.
	* profile.c: Likewise.
	* ra-build.c: Likewise.
	* real.c: Likewise.
	* rtl.h: Likewise.
	* tracer.c: Likewise.
	* tree-inline.c: Likewise.
	* varasm.c: Likewise.

From-SVN: r56952

	* m68k.c (m68k_output_function_prologue,
	m68k_output_function_epilogue): Delete versions for DPX2/MOTOROLA
	and NEWS/MOTOROLA.
	* genattrtab.c: Remove dpx2 comment.
	* libgcc2.c (__enable_execute_stack): Delete versions for
	NeXT/__MACH__, __convex__, __sysV88__, __pyr__ and
	sony_news/SYSTYPE_BSD.
	* longlong.h: Delete code for __a29k__, _AM29K, __clipper__,
	__gmicro__, __i860__, __NeXT__ and __pyr__.
	* rtl.h: Remove convex comment.
	* varasm.c: Likewise.

From-SVN: r56272

	* rtl.h (mem_attrs): Spell out more clearly the roles of ALIGN,
	SIZE, EXPR and OFFSET.

From-SVN: r55753

	* rtl.def (CODE_LABEL): Remove slot 8.
	* rtl.h (struct rtx_def): Document new uses of jump and call fields.
	(LABEL_ALTERNATE_NAME): Delete.
	(LABEL_KIND, SET_LABEL_KIND, LABEL_ALT_ENTRY_P): New.
	* defaults.h: Remove default for ASM_OUTPUT_ALTERNATE_LABEL_NAME.

	* final.c (output_alternate_entry_point): New.
	(final_scan_insn): Use it instead of
	ASM_OUTPUT_ALTERNATE_LABEL_NAME.  Do not consider possibility
	of a case label being an alternate entry point.

	* cfgbuild.c (make_edges, find_bb_boundaries): Use LABEL_ALT_ENTRY_P.
	* emit-rtl.c (gen_label_rtx): Adjust call to gen_rtx_CODE_LABEL.
	Do not clear LABEL_NUSES (unnecessary) or LABEL_ALTERNATE_NAME
	(field deleted).
	* print-rtl.c, ra-debug.c: Update code to output CODE_LABELs.

	* doc/rtl.texi: Document LABEL_KIND, SET_LABEL_KIND, and
	LABEL_ALT_ENTRY_P; not LABEL_ALTERNATE_NAME.
	* doc/tm.texi: Delete documentation of
	ASM_OUTPUT_ALTERNATE_LABEL_NAME.

From-SVN: r55597

	* rtl.h (gen_rtx_CONST_VECTOR): Declare.
	* gengenrtl.c (special_rtx): Check for CONST_VECTOR.
	* emit-rtl.c (gen_rtx_CONST_VECTOR): New function.
	(gen_const_vector_0): Use it.

From-SVN: r55395

        * cfglayout.c (scope_to_insns_initialize): Call set_block_levels.
        (scope_to_insns_finalize): Do not call set_block_levels; handle
        sequences.
        (choose_inner_scope): New.
        * rtl.h (choose_inner_scope): Declare.

From-SVN: r54868

	2002-06-14  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	* rtl.h (SCHED_GROUP_P): Disallow CODE_LABEL, BARRIER and NOTE.
	* sched-deps.c (add_dependence): Likewise.
	(group_leader): Likewise.
	* sched-rgn.c (init_ready_list): Likewise.
	* doc/rtl.texi: Adjust accordingly.

From-SVN: r54622

        * gcse.c (delete_null_pointer_checks_1): Inform caller if any
        null pointer checks were eliminated.  Update prototype.
        (delete_null_pointer_checks): Similarly.
        * rtl.h (delete_null_pointer_checks): Update prototype.
        * toplev.c (rest_of_compilation): Only run cleanup_cfg if
        delete_null_pointer_checks deletes one or more null
        pointer checks.  Do not run cleanup_cfg before gcse, the
        CFG is accurate and optimized at that point..

From-SVN: r54617

        * emit-rtl.c (static_regno_reg_rtx): Define.
        (init_emit_once): Initialize static_regno_reg_rtx.
        (init_emit): Copy static_regno_reg_rtx into regno_reg_rtx instead
        of building new hard reg objects once per function.
        (gen_rtx_REG): Try to share hard regs.
	* regclass.c (init_fake_stack_mems): New function broken out from
	init_regs.
	* rtl.h (init_fake_stack_mems): Declare.
	* toplev.c (lang_independent_init): Call init_regs before
	init_emit_once.  Call init_fake_stack_mems after init_emit_once.

From-SVN: r54588

	* alias.c (argument_registers): Remove.
	(init_alias_once): Initialize static_reg_base_value here.  Remove
	initialization of argument_registers.
	(init_alias_once_per_function): Remove.
	(init_alias_analysis): Copy all the entries from static_reg_base_value
	into new_reg_base_value all at once.
	* rtl.h (init_alias_once_per_function): Remove declaration.
	* function.c (prepare_function_start): Do not call
	init_alias_once_per_function.

	* caller-save.c (init_caller_save): Use gen_rtx_INSN instead of
	starting a sequence and emitting an INSN.

From-SVN: r54582

2002-06-05  David S. Miller  <davem@redhat.com>

	Delete SEQUENCE rtl usage outside of reorg and ssa passes.
	* rtl.h (gen_sequence, emit_insns, emit_insns_before,
	emit_insns_before_scope, emit_insns_after,
	emit_insns_after_scope): Delete declaration.
	* ada/misc.c (insert_code_for): Use emit_insn* instead of
	emit_insns_foo.
	* config/alpha/alpha.c (alpha_set_memflags_1): Abort on SEQUENCE.
	(alpha_set_memflags): Fix comment.
	(set_frame_related_p): Use get_insns instead of gen_sequence.
	* config/alpha/alpha.md (setjmp receiver splitter): Avoid
	emitting no insns.
	* config/arm/arm.c (arm_finalize_pic): Use get_insns instead of
	gen_sequence.
	(arm_gen_load_multiple, arm_gen_store_multiple): Likewise.
	* config/fr30/fr30.c (fr30_move_double): Likewise.
	* config/i386/i386.c (ix86_expand_int_movcc, ix86_expand_movstr):
	Likewise.
	* config/ia64/ia64.c (spill_restore_mem): Likewise.
	* config/ia64/ia64.md (conditional move spliiter): Avoid emitting
	no insns.
	* config/m32r/m32r.c (gen_split_move_double): Use get_insns
	instead of gen_sequence.
	* config/mips/mips.c (embedded_pic_fnaddr_reg): Likewise.
	(mips_expand_prologue, mips16_gp_pseudo_reg): Likewise.
	* config/sh/sh.c (sh_need_epilogue): Likewise.
	* config/sparc/sparc.md (current_function_calls_alloca, flat): New
	attributes.
	(setjmp pattern and split): Use them to avoid splitter which emits
	no RTL.
	* genattrtab.c (main): Emit include of function.h
	* config/stormy16/stormy16.c (xstormy16_split_cbranch): Use
	get_insns instead of gen_sequence.
	* config/cris/cris.c (cris_split_movdx): Likewise.
	* emit-rtl.c (emit_insns*): Kill.
	(try_split): Expect insn list instead of SEQUENCE.
	(make_jump_insn_raw, make_call_insn_raw): Fix comments.
	(emit_*insn*): Reimplement to work with INSN lists and PATTERNs.
	Make them abort if a SEQUENCE is given and RTL checking is
	enabled.
	(emit_*_scope): Don't forget to set scope on final insn.
	(gen_sequence): Move from here...
	* ssa.c (gen_sequence): To here as private function.
	* builtins.c (expand_builtin_apply_args): Use emit_insn_foo, fix
	comments.
	(expand_builtin_return, expand_builtin_mathfn): Likewise.
	(expand_builtin_strlen): Use get_insns instead of gen_sequence.
	(expand_builtin_saveregs): Use emit_insn_foo, fix comments.
	(expand_builtin_expect_jump): Use get_insns and fix comments.
	* calls.c (try_to_integrate): Use emit_insn_foo.
	(expand_call, emit_library_call_value_1): Likewise.
	* expr.c (emit_queue): Handle insn lists instead of SEQUENCE.
	(emit_move_insn_1): Use get_insns instead of gen_sequence.
	(expand_expr): Use emit_insn_foo.
	* cfgrtl.c (commit_one_edge_insertion): Use emit_insn_foo.
	* except.c (build_post_landing_pads): Likewise.
	* flow.c (attempt_auto_inc): Likewise.
	* stmt.c (expand_fixup, fixup_gotos, expand_nl_handler_label,
	expand_nl_goto_receivers, expand_decl_cleanup): Likewise.
	* function.c (fixup_var_refs_insn): Use get_insns instead of
	gen_sequence.
	(fixup_var_refs_1): Likewise and expect insn list from gen_foo.
	(fixup_memory_subreg): Use get_insns instead of gen_sequence.
	(fixup_stack_1, purge_addressof_1, expand_main_function,
	get_arg_pointer_save_area): Likewise.
	(optimize_bit_field, instantiate_virtual_regs_1, assign_parms,
	expand_function_end): Use emit_insn_foo.
	(record_insns, keep_stack_depressed): Work with insn list instead
	of SEQUENCE, fix comments.
	* ifcvt.c (noce_emit_store_flag, noce_try_store_flag,
	noce_try_store_flag_constants, noce_try_store_flag_inc,
	noce_try_store_flag_mask, noce_emit_cmove, noce_try_cmove_arith,
	noce_try_minmax, noce_try_abs): Use emit_insn_foo.
	(noce_process_if_block): Use get_insns instead of gen_sequence.
	* optabs.c (add_equal_note): Work with insn list, fix comments.
	(expand_binop): Expect insn list from GEN_FCN(), use emit_insn_foo.
	(expand_unop, expand_complex_abs, expand_unop_insn,
	expand_no_conflict_block): Likewise.
	(gen_move_insn): Use get_insns instead of gen_sequence.
	(gen_cond_trap): Likewise.
	* integrate.c (copy_rtx_and_substitute): Likewise.
	(emit_initial_value_sets): Use emit_insn_foo.
	* reload1.c (emit_output_reload_insns, emit_reload_insns): Likewise.
	(fixup_abnormal_edges): Avoid losing REG_NOTES more intelligently
	now that RTL generators give insn lists.
	* sibcall.c (replace_call_placeholder): Use emit_insn_foo.
	* doloop.c (doloop_modify, doloop_modify_runtime): Use get_insns
	instead of gen_sequence.
	(doloop_optimize): Work with insn lists instead of SEQUENCE rtl.
	* explow.c (emit_stack_save, emit_stack_restore): Use get_insns
	instead of gen_sequence.
	* loop.c (move_movables, emit_prefetch_instructions,
	gen_add_mult, check_dbra_loop, gen_load_of_final_value):
	Likewise.
	(loop_regs_update): Work with insn list instead of SEQUENCE rtl.
	(product_cheap_p): Likewise, and add commentary about RTL wastage
	here.
	* lcm.c (optimize_mode_switching): Use get_insns instead of
	gen_sequence.
	* profile.c (gen_edge_profiler): Likewise.
	* regmove.c (copy_src_to_dest): Likewise.
	* reg-stack.c (compensate_edge): Likewise and fix comment.
	* gcse.c (process_insert_insn): Likewise.
	(insert_insn_end_bb): Work with insn list instead of SEQUENCE rtl.
	* jump.c (delete_prior_computation): Update comment.
	* genemit.c (gen_expand, gen_split, main): Use get_insns instead
	of gen_sequence, update comments to match.
	* recog.c (peephole2_optimize): Work with insn lists instead of
	SEQUENCE rtl.
	* sched-vis.c (print_pattern): Abort on SEQUENCE.
	* unroll.c (unroll_loop, find_splittable_givs, final_giv_value):
	Use get_insns instead of gen_sequence.
	(copy_loop_body): Likewise and don't emit dummy NOTE.
	* genrecog.c: Don't mention SEQUENCE rtl in comments.
	* combine.c (try_combine): Expect insn lists from split generator.
	* reorg.c (relax_delay_slots): Emit SEQUENCE into insn list by
	hand.

From-SVN: r54497

alias.c (static_reg_base_value): New to hold RTL for items allocated once per function for the aliasing code.

	* alias.c (static_reg_base_value): New to hold RTL for
	items allocated once per function for the aliasing code.
	(init_alias_once_per_function): Initialize static_reg_base_value.
	(init_alias_analysis): Avoid throw-away allocations of RTL by
	using pre-computed values in static_reg_base_value.
	* function.c (prepare_function_start): Call
	init_alias_once_per_function appropriately.
	* rtl.h (init_alias_once_per_function): Declare.
	* caller-save (init_caller_save): Restructure slightly to
	avoid lots of silly RTL generation.
	* expr.c (init_expr_once): Likewise.
	* reload1.c (reload_cse_regs_1): Allocate throw-away register
	RTL object here.  Pass it into children.
	(reload_cse_simplify_operands): Use passed-in register RTL
	object.
	(reload_cse_simplify): Pass through throw-away register
	RTL object.

From-SVN: r54442

i386.md (and promoting splitters): Disable QI to SImode promoting when doing so changes immediate to be 32bit.


	* i386.md (and promoting splitters): Disable QI to SImode promoting
	when doing so changes immediate to be 32bit.

	* rtl.h (emit_*_scope): Declare.
	* emit-rtl.c (emit_*_scope): New global functions.
	(try_split): Copy scope.
	* ifcvt.c (noce_try_store_flag, noce_try_store_flag_constants,
	noce_try_flag_inc, 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): Copy scopes.
	* recog.c (peephole2_optimize): likewise.

From-SVN: r54327

	* emit-rtl.c (get_first_nonnote_insn, get_last_nonnote_insn): New
	functions.
	* rtl.h (get_first_nonnote_insn, get_last_nonnote_insn): Declare.
	* avr/avr.c (avr_output_function_epilogue): Use above to determine
	function size.
	* pa/pa.c (pa_output_function_prologue): Likewise.

From-SVN: r54304

	* cfglayout.c (duplicate_insn_chain): Kill NOTE_INSN_RANGE notes.
	* final.c (final_scan_insn): Likewise.
	* ggc-common.c (ggc_mark_rtx_children_1): Likewise; use
	NOTE_EXPECTED_VALUE instead of NOTE_RANGE.
	* haifa-sched.c (unlink_other_notes): Likeewise.
	(reemit_notes): Likewise.
	* print-rtl.c (print_rtx): Likewise.
	* sched-deps (sched-analyze): Likewise.
	* rtl.c (note_insn_name): Likewise.
	* rtl.h (NOTE_RANGE_INFO, NOTE_LIVE_INFO): Kill.
	(enum insn_note): Kill NOTE_INSN_RANGE_*, NOTE_INSN_LIVE.
	(RANGE_*): Kill.

From-SVN: r54250

From-SVN: r54232

	* loop.c (emit_prefetch_instructions): Properly place the address computation.


	* basic-block.h (basic_block_for_insn, BLOCK_FOR_INSN): Kill.
	(set_block_for_insn): Turn into macro.
	* cfgbuild.c (find_basic_block): Do not clear basic_block_for_insn.
	* cfglayout.c (insn_scopes): Kill.
	(scope_to_insns_initialize): Do not use insn_scopes.
	(scope_to_insns_finalize): Likewise.
	(duplicate_insn_chain): Likewise.
	(cfg_layout_initialize, cfg_layout_finalize): Do not turn scopes to notes.
	* cfgrtl.c (basic_block_for_insn): Kill.
	(delete_insn_and_edges, delete_insn_chain_and_edges): Simplify.
	(create_basic_block_structure): Use reorder_insns.
	(compute_bb_for_insn): Do not use basic_block_for_insn.
	(merge_blocks_nomove): Likewise.
	(update_bb_for_insn): Likewise.
	(verify_flow_info): Likewise.
	(set_block_for_insn): Kill.
	* combine.c (try_combine): Update gen_rtx_INSN call.
	* emit-rtl.c (gen_label_rtx): Update gen_rtx_CODE_LABEL call.
	(mark_insn_raw, make_jump_insn_raw, make_call_insn_raw): Clear
	scopes and BBs.
	(add_insn_after, add_insn_before, remove_insn, reorder_insns): Simplify.
	(emit_note_before, emit_note_after, emit_line_note_after, emit_note):
	Clear BB.
	(emit_insns_after): Simplify.
	(emit_copy_of_insn_after): Copy scope.
	* final.c (final_start_function): Lower scopes.
	* flow.c (check_function_return_warnings): Do not rely on deleted insn.
	* integrate.c (copy_insn_list): Cope scopes.
	* jump.c (duplicate_loop_exit_test): LIkewise; simplify.
	* loop.c (loop_optimize): Do not care block notes.
	* print-rtl.c (print_rtx): Print BB.
	* recog.c (apply_change_group): Simplify.
	* rtl.c (copy_rtx): Handle 'B'.
	* rtl.def (INSN, CALL_INSN, JUMP_INSN, NOTE): Add extra fields.
	* rtl.h (Field accessors): Update indexes.
	* sched-ebb.c (schedule_ebbs): Do not lower notes.
	* sched-rgn.c (schedule_insns): Likewise.
	* toplev.c (rest_of_compilation): Lower notes.
	* unroll.c (unroll_loop): Do not care scoping notes.
	(copy_loop_body): Copy scopes.

From-SVN: r54188

        * rtl.h (CC0_P): New.
        * gcse.c (cprop_jump): Use it with single_set.  Tweak dump text.
        (cprop_insn): Allow any mode register; use CC0_P.  CSE out single_set.
        (bypass_block): Save old dest block for dump text.
        (bypass_conditional_jumps): Allow any mode register; use CC0_P.
        Allow only true SET insns, not single_set.

From-SVN: r54178

	* Makefile.in (tracer.o): New.
	* params.def (TRACER_*): New options.
	* rtl.h (tracer): Declare.
	* timevar.def (TV_TRACER): New.
	* toplev.c (dump_file_index): Add DFI_tracer.
	(dump_file_info): Add tracer.
	(flag_tracer): New.
	(lang_indepdenent_options): Add tracer.
	(rest_of_compilation): Call tracer.
	* tracer.c: New file.
	* invoke.texi (-ftracer): Document.
	(--param tracer-*): Document.

From-SVN: r54154

2002-05-29  David S. Miller  <davem@redhat.com>

	* rtl.h (clear_emit_caches): Delete.
	* integrate.c (output_inline_function): Don't call it.
	* emit-rtl.c (restore_emit_status, init_emit): Likewise.
	(clear_emit_caches): Delete definition.
	(SEQUENCE_RESULT_SIZE, sequence_result, free_insn): Likewise.

From-SVN: r54053

rtl.h (SUBREG_PROMOTED_UNSIGNED_SET): Avoid warnings when disabling checking, and avoid multiple evaluation of RTX.

	* rtl.h (SUBREG_PROMOTED_UNSIGNED_SET): Avoid warnings when
	disabling checking, and avoid multiple evaluation of RTX.

From-SVN: r53687