2001-11-27  Phil Edwards  <pme@gcc.gnu.org>

	* docs/html/explanations.html:  New section, empty for now.
	* docs/html/17_intro/howto.html:  Cleanup.  Move unrelated link...
	* docs/html/23_containers/howto.html:  ...to here.  Break up and
	rewrap threading discussion to emphasize warning.  Move malloc text...
	* docs/html/ext/howto.html:  ...to here.  New section.  Describe
	allocators and __USE_MALLOC effects.
	* docs/html/ext/sgiexts.html:  Mention their code.

From-SVN: r47391

	* gcc.c (ASM_DEBUG_SPEC): Use conditional expression rather than
	preprocessor define.  If only DBX_DEBUGGING_INFO or only
	DWARF2_DEBUGGING_INFO is supported for the target, provide
	appropriate definitions.

From-SVN: r47390

From-SVN: r47389

	* cpphash.c (_cpp_init_hashtable): Update.
	* cpphash.h (struct spec_nodes): Remove n_L.
	* cpplex.c (_cpp_lex_direct): Check for prefix L separately.

	* Makefile.in: Update, and add c-objc-common.o dependencies.
	* c-lang.c: Remove unnecessary includes.
	(c_init): Move bulk of code to c_objc_common_init, and call it.
	(c_tree_printer, c_missing_noreturn_ok_p, c_disregard_inline_limits,
	inline_forbidden_p, c_cannot_inline_tree_fn): Move to
	c-objc-common.c.
	* c-objc-common.c: New.  Mostly pulled from c-lang.c.
	* c-tree.h (c_disregard_inline_limits, c_cannot_inline_fn,
	c_objc_common_init, c_missing_noreturn_ok_p): New.
	* toplev.c: Update comment.
	* doc/passes.texi: Update.
	* objc/ojbc-act.c (LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN,
	LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS,
	LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P): Override.
	(objc_init): Update to use c_objc_common_init.

From-SVN: r47388

        * unroll.c (loop_iterations): Move last change ...
        * doloop.c (doloop_modify_runtime): ... here.

From-SVN: r47387

        * unroll.c (loop_iterations): Detect one situation in which we
        overestimate the number of iterations.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r47386

	* gcc.c (set_collect_gcc_options): New function, split out from
	main.
	Ignore elided switches.
	(do_spec): Invoke before executing command.
	(do_spec_1): Likewise.
	Fixes PR other/3968.

	* gcc.c (set_input): Export.
	Move declaration ...
	gcc.h (set_input): ... here.

	java:
	* jvspec.c (jvgenmain_spec): Cannot use %umain, breaks
	ASM_FINAL_SPEC.
	(lang_specific_pre_link): Use set_input to set input_filename.
	Append `main' here.
	* jvgenmain.c (usage): Append literal `main' to CLASSNAME.
	(main): Fix definition.
	Strip `main' from classname.
	Fixes PR java/227.

From-SVN: r47385

From-SVN: r47384

From-SVN: r47382

	* config/i386/sol2.h (WINT_TYPE): Redefine.
	(WINT_TYPE_SIZE): Likewise.

From-SVN: r47381

	* collect2.c: Check HAVE_DUP2 instead of NO_DUP2.
	(dup2): Make static and add prototype.
	* m68k/plexus.h: Don't define NO_DUP2.
	* configure.in (AC_CHECK_FUNCS): Add dup2.
	* config.in, configure: Regenerate.

From-SVN: r47379

	* ia64/aix.h (REG_SIZE): Don't #undef.
	* sparc.h (REG_SIZE): Delete.
	* flow.c (mark_used_regs): Don't use REG_SIZE.
	* regs.h (REG_SIZE): Delete.

From-SVN: r47378

	* gcc.c: Fix typo PREFERRED_DEBUGGING_FORMAT ->
	PREFERRED_DEBUGGING_TYPE.

From-SVN: r47377

	* Makefile.in (c-lang.o): Depends on langhooks-def.h.
	(expr.o, varasm.o): Depends on langhooks.h.
	* c-common.c (c_safe_from_p): Always declare.
	(c_expand_expr): Refine when declared.
	* c-lang.c (c-common.h): Now include.
	(LANG_HOOKS_SAFE_FROM_P): Define new hook.
	(c_init): Don't set lang_safe_from_expr.
	* expr.c (langhooks.h): Now include.
	(lang_safe_from_p): No longer define.
	(safe_from_p): Use lang hook.
	(expand_expr): Set IGNORE if VOID_TYPE result of VIEW_CONVERT_EXPR too.
	(expand_expr, case VIEW_CONVERT_EXPR): Pass ro_modifier down.
	* expr.h (lang_expand_constant, lang_safe_from_p): Delete.
	* langhooks-def.h (lhd_return_tree, lhd_safe_from_p): New decls.
	(LANG_HOOKS_EXPAND_CONSTANT, LANG_HOOKS_SAFE_FROM_P): New hooks.
	* langhooks.c (lhd_return_tree, lhd_safe_from_p): New functions.
	* langhooks.h (struct lang_hooks): New fields expand_constant
	and safe_from_p.
	* output.h (output_constant): Size arg is HOST_WIDE_INT.
	* stmt.c (expand_decl_init): No longer need to expand constant
	for CONST_DECL.
	* stor-layout.c (put_pending_size): Don't check for SAVE_EXPR.
	* toplev.c (lang_expand_constant): Delete var.
	* tree.c (save_expr): Don't put another SAVE_EXPR around simple
	operations on SAVE_EXPR.
	* varasm.c (langhooks.h): Now include.
	(compare_constant_1): Use lang_hooks, not lang_expand_constant.
	(record_constant_1, output_addressed_constants): Likewise.
	(initializer_constant_valid_p, output_constant): Likewise.
	(output_constant_def): Process no-defer of string constant.
	(output_addressed_constants, case ADDR_EXPR): Use handled_component_p.
	(output_constant): Strip more conversions.
	Track our size and pad for the rest.
	(array_size_for_constructor): Remove code for non-byte STRING_CST.
	(output_constructor): SIZE now HOST_WIDE_INT.
	* cp/Make-lang.in (cp-lang.o): Depends on c-common.h.
	* cp/cp-lang.c (c-common.h): Include.
	(LANG_HOOKS_EXPAND_CONSTANT, LANG_HOOKS_SAFE_FROM_P): New hooks.
	* cp/decl.c (cxx_init_decl_processing): Don't set lang_safe_from_p.
	* cp/expr.c (init_cplus_expand): Don't set lang_expand_constant.

From-SVN: r47376

        * ifcvt.c (noce_try_store_flag_constants): Test for overflow
        in computing DIFF.

From-SVN: r47374

2001-11-27  Laurent Guerby  <guerby@acm.org>

	* Makefile.in: Regenerate Ada dependencies.

From-SVN: r47373

From-SVN: r47371

From-SVN: r47370

From-SVN: r47369

From-SVN: r47368

From-SVN: r47367

From-SVN: r47365

        * config/ia64/sysv4.h (DBX_DEBUGGING_INFO): Undef.
        * config/ia64/aix.h (PREFERRED_DEBUGGING_TYPE): Remove
        commented out override.

From-SVN: r47364

	* cppfiles.c (stack_include_file): Don't optimize zero-length
	files.
	(read_include_file): NUL-terminate read files.
	* cpplex.c (handle_newline, skip_escaped_newlines,
	get_effective_char, skip_whitespace, parse_identifier,
	parse_identifier_slow, parse_number, parse_string,
	_cpp_lex_direct): Optimize for the fact that buffers are guaranteed
	NUL-terminated.
	* cpplib.c (destringize_and_run, cpp_define, handle_assertion):
	Be sure buffers are NUL terminated.
	* cppmacro.c (warn_of_redefinition): Kill compile warning.

	* c-common.c: Include tree-inline.h.
	(c_language): Move separate definitions here.
	(c_common_init_options, c_common_post_options): New.
	(c_common_lang_init): Rename c_common_init.
	* c-common.h (c_common_lang_init): Similarly.
	(c_common_init_options, c_common_post_options): New.
	* c-lang.c (c_post_options): Move body to c_common_post_options.
	(c_init_options): Use c_common_init_options.
	(c_init): Update.
	* langhooks.def: Rearrange.
	* langhooks.h: Rearrange, and improve comments.
	* toplev.c (do_compile): New function.
	(toplev_main): Use it.
	(lang_independent_f_options, parse_options_and_default_flags,
	process_options): Remove trailing periods.
	* Makefile.in: Update.
cp:	* decl2.c (c_language): Move to c-common.c.
	* lex.c (cxx_post_options, cxx_init_options): Use c-common.c
	functions.
	(cxx_init): Update.
objc:	* objc-act.c (objc_post_options, objc_init_options): Use c-common.c
	functions.
	(ojbc_init): Update.

From-SVN: r47362

From-SVN: r47361

From-SVN: r47360

* expr.c (store_constructor): Actually use the value computed
if WORD_REGISTER_OPERATIONS.

From-SVN: r47359

        * Make-lang.in (gnatbind, gnatmake, gnatbl, gnatchop, gnatcmd,
        gnatlink, gnatkr, gnatls, gnatmem, gnatprep, gnatpsta, gnatpsys,
        gnatxref, gnatfind, gnatlbr): Depend on CONFIG_H and prefix.o.

From-SVN: r47358

        * config/elfos.h (SELECT_SECTION): Don't check TREE_READONLY
        for CONSTRUCTOR.

From-SVN: r47357

        * rs6000.c (output_mi_thunk): Handle minimal-toc and call
        correct function on AIX.

From-SVN: r47355

* Makefile.in (stamp-h): Depend on Makefile for proper
serialization.
(*-subdir): Depend on config.h for proper serialization.

Co-Authored-By: Daniel Jacobowitz <drow@mvista.com>

From-SVN: r47354

From-SVN: r47353

* configure.in: Check for alloca.h (for regex.c and putenv.c).
* configure: Regenerate.
* config.h: Add HAVE_ALLOCA_H.

From-SVN: r47352

toplev.c (process_options): Don't force flag_optimize_sibling_calls to zero just because exceptions are enabled.

* toplev.c (process_options): Don't force
flag_optimize_sibling_calls to zero just because exceptions are
enabled.

From-SVN: r47351

        * df.h (transfer_function_sbitmap): Use PARAMS around argument
        list in function prototypes.
        (transfer_function_bitmap): Likewise.

From-SVN: r47350

        * config/stormy16/stormy16.h: Remove DEFAULT_VTABLE_THUNKS.
        * config/i386/netbsd-elf.h: Likewise.

From-SVN: r47349

From-SVN: r47348

	* linux_threads.c (WRAP_FUNC(pthread_join)): Remove special
	case for GC_FREEBSD_THREADS.
	* configure.in (*-*-freebsd*): Clarify warning.
	* configure: Rebuilt.

From-SVN: r47347

From-SVN: r47346

From-SVN: r47345