* rtl.h (enum reg_note): Add REG_MAYBE_DEAD.
* rtl.c (reg_note_name): Add REG_MAYBE_DEAD.
* flow.c (propagate_one_insn): Allow deletion of prologue/epilogue
insns if they have a REG_MAYBE_DEAD note attached.
* config/rs6000/rs6000.c (rs6000_maybe_dead): New function.
(rs6000_emit_load_toc_table): TOC loads may go dead.

From-SVN: r35414

	* config/ia64/ia64.c (ia64_function_arg): Fix last change.  Verify
	type exists before using it.  Use number of words as alignment
	otherwise.
	(ia64_function_arg_partial_nregs, ia64_function_arg_advance,
	ia64_va_arg): Propagate ia64_function_args changes here.

From-SVN: r35413

        * config/elfos.h (ASM_DECLARE_OBJECT_NAME): Care for null DECL.
        * config/ia64/sysv4.h (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Likewise.

From-SVN: r35412

	* sh.h (CPP_SPEC, TARGET_SWITCHES): Add m4-nofpu.
	* sh.md (udivsi3, divsi3): Don't use libcalls that use the FPU
	unless TARGET_SH3E is set.
	* t-sh (MULTILIB_MATCHES): Add m2=m4-nofpu.

	* sh.md (ashlsi3_d, ashlsi3_k): Remove, replace with
	(ashlsi3_std): New pattern.
	(ashlsi3 expander): Use it for TARGET_SH3.
	* sh.c (gen_ashift): Use it instead of ashlsi3_k.

From-SVN: r35411

2000-08-01  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>

	* docs/install.html: Edit bits about requiring a special version
	of the autotools.

From-SVN: r35410

	* loop.c (canonicalize_condition):  use destination, not source to
	determine set's mode.

From-SVN: r35409

From-SVN: r35408

2000-07-31  Benjamin Kosnik  <bkoz@cygnus.com>

	* libio/fileops.cc: Update to current glibc sources.
	* libio/genops.c: Same.
	* libio/iofwide.c: Same.
	* libio/libio.h: Same.
	* libio/libioP.h: Same.
	* libio/wfiledoalloc.c: Same.
	* libio/wgenops.c: Same.

From-SVN: r35407

From-SVN: r35406

* ltconfig, ltmain.sh: Update from libtool multi-language branch.
* ltcf-c.sh (need_lc): Fix test message.  Set wl for archive_cmds.
(ac_cv_prog_cc_pic): Don't print `cached' without `checking'.
* ltcf-cxx.sh (need_lc): Set based on postdeps.

From-SVN: r35405

        * loop.c (check_dbra_loop): Make change from July 17, 2000 work
        on targets which need more than one insn for a compare/cbranch
        operation.

From-SVN: r35404

        * gcc-c-torture/execute/20000731-2.c: New test.
Fix will be applied shortly...

From-SVN: r35403

From-SVN: r35402

	* config/ia64/ia64.c (ia64_function_arg): Use alignment not size
	when computing offset.

From-SVN: r35401

From-SVN: r35400

        * gcc.c-torture/execute/20000731-1.c: New test.
        * gcc.c-torture/execute/20000731-1.x: Expected to fail for i?86-*-*.

From-SVN: r35399

From-SVN: r35398

From-SVN: r35397

* flow.c (clear_log_links): Nuke global_live_at_start and
global_live_at_end data, since if the log_links stuff is invalid
so is global_live_at_*.

From-SVN: r35396

From-SVN: r35395

2000-07-31  Jakub Jelinek  <jakub@redhat.com>

	* cpplex.c (_cpp_get_line): If index is 0, return line 0 col 0.
	(_cpp_get_token): Don't macro expand a just pasted token if it
	was pasted at no_expand_level.

	* testsuite/gcc.dg/cpp/paste7.c: New test.

2000-07-31  Zack Weinberg  <zack@wolery.cumb.org>

	* cppmacro.c (find_param, count_params, save_expansion):
	Permit 'defined' as a macro parameter name.

From-SVN: r35394

From-SVN: r35393

From-SVN: r35392

From-SVN: r35391

* configure.in (qCXX_FOR_TARGET): Quote `&' characters in
CXX_FOR_TARGET for sed.

From-SVN: r35390

	* Makefile.in: Rename cpp to cpp0, tradcpp to tradcpp0, and
	xcpp to cpp throughout.
	(native): Remove unnecessary dependency on cpp.

	* gcc.c (trad_capable_cpp, C specs): Rename cpp to cpp,
	tradcpp to tradcpp0.
	(.i spec): Add missing output-file spec to cc1 command line.

	* ch/lang-specs.h, cp/lang-specs.h, f/lang-specs.h,
	objc/lang-specs.h: Rename cpp to cpp0 and/or tradcpp to tradcpp0.

From-SVN: r35389

	* gcc.dg/c90-digraph-1.c: Restore { dg-do run } marker.
	* gcc.dg/noncompile/990416-1.c: Do not expect an implicit-
	declaration warning for __builtin_dwarf_reg_size.

From-SVN: r35387

	* c-decl.c (mesg_implicit_function_declaration): Init to -1.
	(implicit_decl_warning): New function.
	(implicitly_declare): Use it.
	* c-typeck.c (build_external_ref): Use implicit_decl_warning
	to complain about implicit decls of builtins.

	* c-lang.c (lang_init): Set mesg_implicit_function_declaration
	based on pedantic && flag_isoc99, if not already set.
	* c-tree.h: Declare mesg_implicit_function_declaration.
	Prototype implicit_decl_warning.

	* gcc.dg/c99-impl-decl-1.c: No longer XFAIL.

From-SVN: r35385

	* Makefile.in (ssa.o): Updated header files in dependences.
	* basic-block.h: Added compute_immediate_postdominators declaration.
	* config/i386/i386.h (CONVERT_HARD_REGISTER_TO_SSA_P): Added
	definition.
	* flow.c (compute_immediate_dominators): Updated comment.
	(compute_immediate_postdominators): Added definition.
	* rtl.h (HARD_REGISTER_P): Added definition.
	* ssa.c: Include additional header files.
	(assert): Added definition.
	(ssa_rename_to_lookup): Added to reimplement ssa_rename_to to
	include select hard registers.
	(ssa_rename_to_insert): Likewise.
	(ssa_rename_from_initialize): Likewise.
	(ssa_rename_from_lookup): Likewise.
	(original_register): Likewise.
	(ssa_rename_from_insert): Added to reimplement ssa_rename_from to
	include select hard reigsters.
	(ssa_rename_from_traverse): Likewise.
	(ssa_rename_from_free): Likewise.
	(ssa_rename_from_print): Likewise.
	(ssa_rename_from_print_1): Likewise.
	(ssa_rename_from_hash_function): Likewise.
	(ssa_rename_from_equal): Likewise.
	(ssa_rename_from_delete): Likewise.
	(simplify_to_immediate_dominators): Removed in favor of
	flow.c:compute_immediate_dominators.
	(find_evaluations_1): Modified to work with hard registers.
	(insert_phi_node): Likewise.
	(insert_phi_nodes): Likewise.
	(struct rename_set_data): Updated prev_reg comment.
	(create_delayed_rename): Modified to work with hard registers.
	(RENAME_NO_RTX): Updated comment.
	(apply_delayed_renames): Modified to work with hard registers.
	(rename_insn_1): Likewise and added handling of CLOBBER rtls.
	(rename_block): Updated to use revised ssa_rename_to interface.
	(rename_registers): Updated to use revised ssa_rename_to and
	ssa_rename_from interface.
	(convert_to_ssa): Revised to use compute_immediate_dominators and
	deal with hard registers.
	(make_regs_equivalent_over_bad_edges): Modified to work with hard
	registers.  Added check for illegal unification of hard register.
	(make_equivalent_phi_alternatives_equivalent): Modified to work
	with hard registers.
	(compute_conservative_reg_partition): Likewise.
	(coalesce_if_unconflicting): Modified to work with hard registers
	and check for conflicting hard registers.
	(mark_phi_and_copy_regs): Revised loop to work only on pseudo
	registers.
	(rename_equivalent_regs_in_insn): Modified to work with hard
	registers.
	(record_canonical_element_1): Added definition.
	(check_hard_regs_in_partition): Added definition.
	(convert_from_ssa): Added data structure deallocation and check
	for illegal hard register unification.
	(conflict_hard_regs_p): Added definition.
	* toplev.c (rest_of_compilation): Added comment.

From-SVN: r35384

2000-07-30  Anthony Green  <green@redhat.com>

        * config/ia64/crtbegin.asm (__EH_FRAME_BEGIN__): Align correctly.

From-SVN: r35383

        * builtins.c (expand_builtin_apply): Don't defer pop during
        argument setup.

From-SVN: r35382

calls.c (combine_pending_stack_adjustment_and_call): Only use preferred_unit_stack_boundary when it is > 1.

        * calls.c (combine_pending_stack_adjustment_and_call): Only use
        preferred_unit_stack_boundary when it is > 1.

From-SVN: r35381

	* c-common.c (init_function_format_info): Add C99 format functions
	in C99 mode.

From-SVN: r35380

From-SVN: r35379

From-SVN: r35378

	* c-decl.c (get_parm_info): Don't treat 'const void', 'volatile
	void' or 'register void' as being the special case of 'void' alone
	in a parameter list.

From-SVN: r35377

From-SVN: r35376

        * h8300.c (get_shift_alg): Remove the variable alg.
        (emit_a_shift): Rearrange code to improve readability.

        * h8300.md (movsi_h8300hs): Rearrange code to improve readability.

From-SVN: r35375

c-typeck.c (build_c_cast): Change -Wcast-qual pedwarn for discarding qualifiers into a plain warning.

        * c-typeck.c (build_c_cast): Change -Wcast-qual pedwarn for
        discarding qualifiers into a plain warning.

From-SVN: r35374

From-SVN: r35373