* libgcc2.h (W_TYPE_SIZE): Fix case where MIN_UNITS_PER_WORD == 1
	and LONG_LONG_TYPE_SIZE > 32.

From-SVN: r38782

From-SVN: r38781

	* jump.c (reversed_comparison_code_parts): Fix typo introduced by
	the previous change.

From-SVN: r38780

	* jump.c (reversed_comparison_code_parts, reversed_comparison_code):
	New.
	(can_reverse_comparison_p): Rewrite to use reversed_comparison_code.
	(reverse_condition_maybe_unordered): Abort on unsigned comparisons.
	* rtl.h (reversed_comparison_code_parts, reversed_comparison_code):
	Declare.

From-SVN: r38779

From-SVN: r38778

        * c-lang.c (c_post_options): Call cpp_post_options.
        * cppmain.c (main): Similarly.
        * fix-header.c (read_scan_file): Similarly.
        * cp/decl2.c (cxx_post_options): Similarly.
        * objc/objc-act.c (objc_post_options): Similarly.
        * cppinit.c (cpp_start_read): Move option consistency checks
        to cpp_post_options.  Don't call init_dependency_output.
        If needed, add default target and main file dependency.
        (OPT_MD, OPT_MMD): Remove.
        (OPT_MF): New.
        (cpp_handle_option): Update for OPT_* changes.
        (cpp_post_options): New.
        (init_dependency_output): Command line -MF overrides environment
        variables.  Don't set default target etc.  Suppress output
        if dependencies are going to stdout.
        (print_help): Update.
        * cpplib.h (cpp_post_options): New.
        * gcc.c (cpp_options): Update for -MD, -MMD, -MF.

From-SVN: r38777

From-SVN: r38776

simplify-rtx.c (simplify_relational_operation): Always simplify ORDERED and UNORDERED when FLAG_FAST_MATH.


	* simplify-rtx.c (simplify_relational_operation): Always simplify
	ORDERED and UNORDERED when FLAG_FAST_MATH.  Handle properly UNLE
	and UNGE.

From-SVN: r38775

	* combine.c (combine_simplify_rtx): Recognize the unordered compares.
	(nonzero_bits): Likewise.
	(simplify_comparison): Likewise.
	(num_sign_bit_copies): Likewise; return more sane value depending
	on STORE_FLAG_VALUE.
	(known_cond): Do not assume EQ to be always true for equivalent
	operands.

From-SVN: r38774

From-SVN: r38773

	* rtlanal.c (set_of_1): New static function.
	(reg_set_last_1, reg_set_p_1, reg_set_reg, reg_set_flag,
	 reg_set_last_unknown, reg_set_last_value, reg_set_last_first_regno,
	 reg_set_last_last_regno): Remove.
	(set_of): New global function.
	(set_of_data): New structure.
	(reg_set_p, reg_set_last): Revamp for set_of.
	* rtl.h (set_of): New.

From-SVN: r38772

	* c-common.c (c_common_nodes_and_builtins): Add _Exit builtin.
	* extend.texi: Document _Exit builtin.

testsuite:
	* gcc.c-torture/execute/builtin-noret-1.c: New test.

From-SVN: r38771

        * (initialize, initialize_builtins,
        initialize_dependency_output, initialize_standard_includes):
        Rename s/initialize/init. Update.
        (init_dependency_output): Move to after
        cpp_handle_options, the correct location temporally at least.
        (opt_comp): Move next to init (), its caller.  Fix prototype.
        (init): Make "initialized" local scope.
        (cpp_create_reader): Always call init ().
        (cpp_start_read): Update.
        (output_deps): New function, broken out of cpp_finish.
        (cpp_finish): Break out output_deps.

From-SVN: r38770

From-SVN: r38769

        * collect2.c (COFF specific stuff): Revert 12-06 patch
        to prototype system functions.

From-SVN: r38768

	* gcc.dg/format/format.h: New file.
	* gcc.dg/format/array-1.c, gcc.dg/format/attr-1.c,
	gcc.dg/format/branch-1.c, gcc.dg/format/c90-printf-1.c,
	gcc.dg/format/c90-printf-2.c, gcc.dg/format/c90-printf-3.c,
	gcc.dg/format/c90-scanf-1.c, gcc.dg/format/c90-scanf-2.c,
	gcc.dg/format/c90-scanf-3.c, gcc.dg/format/c90-scanf-4.c,
	gcc.dg/format/c90-strftime-1.c, gcc.dg/format/c90-strftime-2.c,
	gcc.dg/format/c94-printf-1.c, gcc.dg/format/c94-scanf-1.c,
	gcc.dg/format/c99-printf-1.c, gcc.dg/format/c99-printf-2.c,
	gcc.dg/format/c99-printf-3.c, gcc.dg/format/c99-scanf-1.c,
	gcc.dg/format/c99-scanf-2.c, gcc.dg/format/c99-scanf-3.c,
	gcc.dg/format/c99-strftime-1.c, gcc.dg/format/c99-strftime-2.c,
	gcc.dg/format/diag-1.c, gcc.dg/format/errmk-1.c,
	gcc.dg/format/ext-1.c, gcc.dg/format/ext-2.c,
	gcc.dg/format/ext-3.c, gcc.dg/format/ext-4.c,
	gcc.dg/format/ext-5.c, gcc.dg/format/miss-1.c,
	gcc.dg/format/miss-2.c, gcc.dg/format/no-exargs-1.c,
	gcc.dg/format/no-y2k-1.c, gcc.dg/format/nonlit-1.c,
	gcc.dg/format/nonlit-2.c, gcc.dg/format/nonlit-3.c,
	gcc.dg/format/sec-1.c, gcc.dg/format/strfmon-1.c,
	gcc.dg/format/va-1.c, gcc.dg/format/warnll-1.c,
	gcc.dg/format/xopen-1.c, gcc.dg/format/z-1.c: Include "format.h"
	instead of declaring standard types, macros and functions in each
	test.

From-SVN: r38767

	* hard-reg-set.h: Add multiple include guard.
	* basic-block.h (struct loop): Add `sink' field.
	* loop.h: Include sbitmap.h, hard-reg-set.h, and basic-block.h.
	(emit_iv_add_mult): Delete.
	(loop_iv_add_mult_hoist, loop_iv_add_mult_sink): Define.
	(loop_iv_add_mult_emit_before, loop_insn_sink): Define.
	(unroll_loop): Remove end_insert_before argument.
	* loop.c (loop_givs_rescan): Remove end_insert_before argument.
	(maybe_eliminate_biv_1): Likewise.
	(emit_iv_add_mult): Delete.
	(gen_add_mult, loop_regs_update): New.
	(loop_insn_emit_after, loop_insn_emit_before): New.
	(loop_insn_sink, loop_insn_sink_or_swim): New.
	(emit_iv_add_mult): Delete.
	(scan_loop): Set loop->sink.
	(loop_givs_reduce): Use loop_insn_sink and its ilk.
	(loop_givs_rescan, strength_reduce, check_dbra_loop): Likewise.
	(maybe_eliminate_biv_1): Likewise.
	(maybe_eliminate_biv_1): Add basic block argument.
	* unroll.c (unroll_loop): Remove end_insert_before argument.
	(find_splittable_regs): Likewise.
	(find_splittable_regs): Use loop_insn_sink and its ilk.
	(find_splittable_givs, final_biv_value, final_giv_value): Likewise.

From-SVN: r38766

	* loop.h (loop_insn_hoist): New prototype.
	* loop.c (loop_insn_hoist, loop_insn_emit_before): New.
	(move_movables, loop_givs_rescan): Use loop_insn_hoist.
	(check_dbra_loop, load_mems): Likewise.
	* unroll.c (unroll_loop, find_splittable_regs): Likewise.
	(find_splittable_givs): Likewise.

From-SVN: r38765

From-SVN: r38764

From-SVN: r38763

Makefile.in (DRIVER_DEFINES): Define ENABLE_SHARED_LIBGCC and NO_SHARED_LIBGCC_MULTILIB as required for the...

        * Makefile.in (DRIVER_DEFINES): Define ENABLE_SHARED_LIBGCC and
        NO_SHARED_LIBGCC_MULTILIB as required for the target.
        * gcc.c (init_spec): Massage the existing libgcc_spec into a
        variant that handles a shared libgcc.
        (process_command): Always validate -{static,shared}-libgcc.
        (do_spec_1): New 'M' case.
        * invoke.text (Link Options): Document -{static,shared}-libgcc.

From-SVN: r38762

        * Makefile.in (slibdir): New variable.
        (libgcc.mk): Pass SHLIB_INSTALL to mklibgcc.
        (installdirs): Create slibdir.
        (install-libgcc, install-multilib): Defer to libgcc.mk.
        * configure.in (slibdir): Substitute.
        * mklibgcc.in (install): New target.

        * config/t-linux (SHLIB_LINK): Create links for the soname.
        (SHLIB_INSTALL): New.
        * config/alpha/t-osf4 (SHLIB_INSTALL): New.
        * config/mips/t-iris6 (SHLIB_INSTALL): New.
        * config/rs6000/t-aix43 (SHLIB_INSTALL): New.
        * config/sparc/t-slibgcc (SHLIB_INSTALL): New.
        * config/sparc/t-slibgcc-sld (SHLIB_INSTALL): New.

From-SVN: r38761

        * config/rs6000/aix.h (LINK_LIBGCC_SPECIAL_1): New.
        * config/rs6000/rs6000.h (LIBGCC_SPEC): Remove.
        * config/rs6000/sysv4.h (LIBGCC_SPEC): Remove.

From-SVN: r38760

From-SVN: r38759

	* loop.c (count_loop_regs_set): Delete.
	(load_mems_and_recount_loop_regs_set): Delete.
	(loop_regs_scan): Merge common code from count_loop_regs_set,
	scan_loop, and load_mems_and_recount_loop_regs_set.
	(scan_loop): Call load_mems directly and loop_regs_scan
	again if new registers created.

From-SVN: r38758

        * toplev.c (main): Call the front-end specific post_options
        hook if one is given.
        * toplev.h (struct_lang_hooks, lang_hooks): New.
        * c-lang.c (c_post_options, lang_hooks): Implement lang_hooks
        for the C front end.
        * cp/decl2.c (cxx_post_options, lang_hooks): Implement
        lang_hooks for the C++ front end.
        * objc/objc-act.c (objc_post_options, lang_hooks): Implement
        lang_hooks for the ObjC front end.
        * f/com.c (lang_hooks): Hooks for the Fortran front end.
        * java/lang.c (lang_hooks): Hooks for the Java front end.

From-SVN: r38757

        * c-lex.c (init_c_lex): Request #define / #undef callbacks
        for verbose DWARF[2] debugging.
        (cb_define, cb_undef): The new callbacks.
        * toplev.h (debug_define, debug_undef): Make const correct.
        * toplev.c (debug_define, debug_undef): Similarly.  Do not
        perform the verbosity tests here anymore.

From-SVN: r38756

* reload.c (subst_reloads): Take INSN argument.  When
replacing a LABEL_REF in a JUMP_INSN, add a REG_LABEL note.
* reload.h (subst_reloads): Adjust prototype.
* reload1.c (reload_as_needed): Pass INSN to subst_reloads.
* jump.c (mark_all_labels): Canonicalize any REG_LABEL notes
present in JUMP_INSNs and copy them to JUMP_LABEL.
* flow.c (find_label_refs, find_basic_blocks_1): Skip
JUMP_INSNs and insns with REG_LABELs that are followed by
JUMP_INSNs with the same REG_LABEL.
* sched-rgn.c (is_cfg_nonregular): Likewise.
* rtlanal.c (computed_jump_p): Make it false if a REG_LABEL
note is available.
* unroll.c (unroll_loop): Look for REG_LABEL notes in
JUMP_INSNs too.
* rtl.texi (REG_LABEL): Document usage in JUMP_INSNs.

From-SVN: r38755

From-SVN: r38754

From-SVN: r38753

        * loop.c (scan_loop): Use xcalloc for the regs array.
        (load_mems_and_recount_loop_regs_set): Zero the new memory
        received from xrealloc.

From-SVN: r38752

	* gcc.dg/format/format.exp: New file.
	* gcc.dg/c90-printf-1.c: Rename to gcc.dg/format/c90-printf-1.c.
	* gcc.dg/c90-printf-2.c: Rename to gcc.dg/format/c90-printf-2.c.
	* gcc.dg/c90-printf-3.c: Rename to gcc.dg/format/c90-printf-3.c.
	* gcc.dg/c94-printf-1.c: Rename to gcc.dg/format/c94-printf-1.c.
	* gcc.dg/c99-printf-1.c: Rename to gcc.dg/format/c99-printf-1.c.
	* gcc.dg/c99-printf-2.c: Rename to gcc.dg/format/c99-printf-2.c.
	* gcc.dg/c99-printf-3.c: Rename to gcc.dg/format/c99-printf-3.c.
	* gcc.dg/c90-scanf-1.c: Rename to gcc.dg/format/c90-scanf-1.c.
	* gcc.dg/c90-scanf-2.c: Rename to gcc.dg/format/c90-scanf-2.c.
	* gcc.dg/c90-scanf-3.c: Rename to gcc.dg/format/c90-scanf-3.c.
	* gcc.dg/c90-scanf-4.c: Rename to gcc.dg/format/c90-scanf-4.c.
	* gcc.dg/c94-scanf-1.c: Rename to gcc.dg/format/c94-scanf-1.c.
	* gcc.dg/c99-scanf-1.c: Rename to gcc.dg/format/c99-scanf-1.c.
	* gcc.dg/c99-scanf-2.c: Rename to gcc.dg/format/c99-scanf-2.c.
	* gcc.dg/c99-scanf-3.c: Rename to gcc.dg/format/c99-scanf-3.c.
	* gcc.dg/c90-strftime-1.c: Rename to gcc.dg/format/c90-strftime-1.c.
	* gcc.dg/c90-strftime-2.c: Rename to gcc.dg/format/c90-strftime-2.c.
	* gcc.dg/c99-strftime-1.c: Rename to gcc.dg/format/c99-strftime-1.c.
	* gcc.dg/c99-strftime-2.c: Rename to gcc.dg/format/c99-strftime-2.c.
	* gcc.dg/format-array-1.c: Rename to gcc.dg/format/array-1.c.
	* gcc.dg/format-attr-1.c: Rename to gcc.dg/format/attr-1.c.
	* gcc.dg/format-branch-1.c: Rename to gcc.dg/format/branch-1.c.
	* gcc.dg/format-diag-1.c: Rename to gcc.dg/format/diag-1.c.
	* gcc.dg/format-errmk-1.c: Rename to gcc.dg/format/errmk-1.c.
	* gcc.dg/format-ext-1.c: Rename to gcc.dg/format/ext-1.c.
	* gcc.dg/format-ext-2.c: Rename to gcc.dg/format/ext-2.c.
	* gcc.dg/format-ext-3.c: Rename to gcc.dg/format/ext-3.c.
	* gcc.dg/format-ext-4.c: Rename to gcc.dg/format/ext-4.c.
	* gcc.dg/format-ext-5.c: Rename to gcc.dg/format/ext-5.c.
	* gcc.dg/format-miss-1.c: Rename to gcc.dg/format/miss-1.c.
	* gcc.dg/format-miss-2.c: Rename to gcc.dg/format/miss-2.c.
	* gcc.dg/format-no-exargs-1.c: Rename to gcc.dg/format/no-exargs-1.c.
	* gcc.dg/format-no-y2k-1.c: Rename to gcc.dg/format/no-y2k-1.c.
	* gcc.dg/format-nonlit-1.c: Rename to gcc.dg/format/nonlit-1.c.
	* gcc.dg/format-nonlit-2.c: Rename to gcc.dg/format/nonlit-2.c.
	* gcc.dg/format-nonlit-3.c: Rename to gcc.dg/format/nonlit-3.c.
	* gcc.dg/format-sec-1.c: Rename to gcc.dg/format/sec-1.c.
	* gcc.dg/format-strfmon-1.c: Rename to gcc.dg/format/strfmon-1.c.
	* gcc.dg/format-va-1.c: Rename to gcc.dg/format/va-1.c.
	* gcc.dg/format-warnll-1.c: Rename to gcc.dg/format/warnll-1.c.
	* gcc.dg/format-xopen-1.c: Rename to gcc.dg/format/xopen-1.c.
	* gcc.dg/formatz-1.c: Rename to gcc.dg/format/z-1.c.

From-SVN: r38749

From-SVN: r38748

integrate.c (copy_rtx_and_substitute): When copying an ignored return value, strip REG_FUNCTION_VALUE_P.

	* integrate.c (copy_rtx_and_substitute): When copying
	an ignored return value, strip REG_FUNCTION_VALUE_P.

From-SVN: r38747

From-SVN: r38746

	* parse.y (switch_label): Use build, not build1, to construct
	DEFAULT_EXPR.

From-SVN: r38745

	* loop.c (debug_biv, debug_giv): New.
	(loop_biv_dump): Break out from ...
	(record_biv): ... here.
	(loop_giv_dump): Break out from ...
	(record_giv): ... here.
	(loop_bivs_check): Use print_simple_rtl.
	* unroll.c (loop_iterations): Use print_simple_rtl.

From-SVN: r38744

2001-01-05  Benjamin Kosnik  <bkoz@redhat.com>

	Fix 27_io/filebuf_members.cc
	* src/localename.cc (locale::_Impl::_Impl(const _Impl& __imp,
	const string& __name, category __cat, size_t __refs): Set
	_M_has_name with _M_name.
	* include/bits/localefwd.h (locale::operator!=): Protect member
	function call with this->.
	* src/locale.cc (locale::operator==): Make fast checks first.
	* include/bits/basic_ios.tcc (basic_ios::init): Simplify.

	* include/bits/ios_base.h (_M_synced_with_stdio): Add data member
	to ios_base::Init.
	* src/ios.cc (ios_base::Init::Init): Initialize here.
	(ios_base::sync_with_stdio): Set here.

2001-01-04  Loren J. Rittle  <ljrittle@acm.org>

        * config/c_io_stdio.cc (__basic_file<_CharT>::sys_open()): On
        systems that support it, call dup() before fdopen().

From-SVN: r38742

	* pa.md (return, return_internal): Modify patterns to prevent regrename
	mucking with the return pointer.

From-SVN: r38741

From-SVN: r38740