Merging code from dfa-branch:

From-SVN: r52915

	* doc/install.texi (Testing): Provide additional information, and
	a stronger encouragement, for running the testsuites.

From-SVN: r52910

	* doc/contrib.texi (Contributors): Add Paolo Carlini and
	Janis Johnson.
	Update Richard Henderson, Jakub Jelinek, and Mark Mitchell.
	Refer to Objective-C instead of ObjC, SPARC instead of sparc,
	and CPU instead of cpu.

From-SVN: r52893

	* toplev.c (flag_if_conversion, flag_if_conversion2): New static
	variables.
	(lang_independent_options): Add -fif-conversion, -fif-conversion2
	(rest_of_compilation): Do if conversion only when asked for.
	(parse_options_and_default_flags): Set new variables to 1 for -O1
	* invoke.texi (-fif-conversion, -fif-conversion2): Document.

From-SVN: r52891

	2002-04-25  Steve Christiansen  <smc@us.ibm.com>
	* doc/md.texi (Machine Constraints): Add IA-64 constraints.

From-SVN: r52774

From-SVN: r52769

2002-04-24  Matt Hiller  <hiller@redhat.com>

	* mips.c (mips_class_max_nregs, mips_register_move_cost): New
	functions.
	* mips.h (CLASS_MAX_NREGS, REGISTER_MOVE_COST): Redefine as calls
	of the corresponding functions.
	* mips-protos.h (mips_class_max_nregs, mips_register_move_cost):
	New prototypes.

2002-04-24  Matt Hiller  <hiller@redhat.com>

	* config/mips/mips.h (mips_sw_reg_names): Declare as extern.

	(ALL_COP_ADDITIONAL_REGISTER_NAMES): New macro.
	(FIRST_PSEUDO_REGISTER): Redefine considering coprocessor
	registers, adjust comment accordingly.
	(FIXED_REGISTERS, CALL_USED_REGISTERS, CALL_REALLY_USED_REGISTERS,
	reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS, REGISTER_NAMES,
	DEBUG_REGISTER_NAMES, REG_ALLOC_ORDER): Adjust to include entries
	for coprocessor registers.
	(ADDITIONAL_REGISTER_NAMES): Include
	ALL_COP_ADDITIONAL_REGISTER_NAMES.

	(COP0_REG_FIRST, COP0_REG_LAST, COP0_REG_NUM,
	COP2_REG_FIRST, COP2_REG_LAST, COP2_REG_NUM,
	COP3_REG_FIRST, COP3_REG_LAST, COP3_REG_NUM,
	COP0_REG_P, COP2_REG_P, COP3_REG_P, ALL_COP_REG_P,
	COPNUM_AS_CHAR_FROM_REGNUM, COP_REG_CLASS_P): New macros.

	(mips_char_to_class): Adjust comment to include coprocessor
	constraint letters.

	* config/mips/mips.c (coprocessor_operand, coprocessor2_operand):
	New functions.
	(mips_reg_names, mips_regno_to_class): Include coprocessor
	information.
	(mips_sw_reg_names): Ditto, make non-static.
	(mips_move_1word): Handle moves to and from coprocessor registers.
	(mips_move_2words): Handle moves to and from coprocessor
	registers.
	(mips_class_max_nregs, mips_register_move_cost): Handle
	coprocessor register classes.
	(override_options): Initialize mips_char_to_class and
	mips_hard_regno_mode_ok properly for coprocessor registers.

	* config/mips/mips.md (movdi_internal, movdi_internal2,
	movsi_internal1, movsi_internal2): Add constraint-sets for
	coprocessor registers.
	* testsuite/gcc.c-torture/mipscop-1.c: New testcase.
	* testsuite/gcc.c-torture/mipscop-1.x: Disable above if target
	isn't mips.
	* testsuite/gcc.c-torture/mipscop-2.c: New testcase.
	* testsuite/gcc.c-torture/mipscop-2.x: Disable above if target
	isn't mips.
	* testsuite/gcc.c-torture/mipscop-3.c: New testcase.
	* testsuite/gcc.c-torture/mipscop-3.x: Disable above if target
	isn't mips.
	* testsuite/gcc.c-torture/mipscop-4.c: New testcase.
	* testsuite/gcc.c-torture/mipscop-4.x: Disable above if target
	isn't mips.

	* doc/tm.texi: Document feature.

From-SVN: r52765

From-SVN: r52758

	* doc/install.texi: Clarify which versions of alpha*-dec-osf*
	are obsoleted.

From-SVN: r52691

	* c-lex.c (lex_charconst): Call convert to get constant in
	proper type; don't just smash the type field.
	Fixes PR c/6300.

	* config.gcc: Add list of obsolete configurations.  Disallow
	building these without --enable-obsolete.
	* doc/install.texi: Document --enable-obsolete and obsoletion
	policy.  Mention obsoletion of individual targets in
	appropriate places.

From-SVN: r52639

	* doc/invoke.texi: Remove Chill references.
	* doc/gcc.texi: Update last modified date.

From-SVN: r52561

	* doc/install.texi (Specific): Update status of Solaris 2.8.
	For PR libgcj/6158.

From-SVN: r52532

install.texi (Specific, [...]): Mention that binutils 2.11.2 and higher generate smaller binaries than Sun's...

	* doc/install.texi (Specific, sparc-sun-solaris2*): Mention that
	binutils 2.11.2 and higher generate smaller binaries than Sun's
	native tools.

Co-Authored-By: Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>

From-SVN: r52526

	* doc/install.texi (Downloading the source): Do not mention Chill
	any longer, but mention Ada.
	(Configuration): Do not mention Chill any longer.

From-SVN: r52482

2002-04-16  Andrew Haley  <aph@cambridge.redhat.com>

	* doc/install.texi (Building): libgcj requires GNU make.

From-SVN: r52414

        * config.gcc (sparcv9-solaris): Configure for 64-bit default.
        Adjust tm_file order to get TARGET_DEFAULT set properly.
        (sparc-solaris): Configure 2.[78] for 64-bit multilibs.
        * doc/install.texi (sparc-solaris): Update.

From-SVN: r52373

        * doc/install.texi (Installing GCC: Configuration): Clarify
        the only supported ways to configure gcc.

From-SVN: r52335

	* MAINTAINERS: Remove chill maintainers.
	* Makefile.in (CHILLFLAGS): Remove.
	(CHILL_LIB): Remove.
	(TARGET_CONFIGDIRS): Remove libchill.
	(CHILL_FOR_TARGET): Remove.
	(BASE_FLAGS_TO_PASS): Don't pass CHILLFLAGS, CHILL_FOR_TARGET, or
	CHILL_LIB.
	(CONFIGURE_TARGET_MODULES): Remove configure-target-libchill.
	(CHECK_TARGET_MODULES): Likewise.
	(INSTALL_TARGET_MODULES): Likewise.
	(CLEAN_TARGET_MODULES): Likewise.
	(configure-target-libchill): Remove.
	(all-target-libchill): Remove.
	* configure.in (target_libs): Remove target-libchill.
	Do not compute CHILL_FOR_TARGET.
	* libchill: Remove directory.

	Remove Chill front end.
	* gcc.c (default_compilers): Remove Chill entries.
	* ch: Remove directory.
	* doc/frontends.texi: Remove information about Chill.
	* doc/sourcebuild.texi: Likewise.
	* doc/standards.texi: Likewise.

	* testsuite/lib/chill.exp: Remove.

	* g77.texi: Remove Chill reference.

	* gcc_release (build_tarfiles): Do not build Chill tarfiles.
	(CHILL_DIRS): Remove.

From-SVN: r52327

        * config.gcc (sparcv9-*-solaris2): Default to 32-bit code.
        (sparc*-*-solaris): Clean up header files.
        * configure.in (AS_SPARC64_FLAG): Error out if can't find it
        and plan on generating 64-bit code.
        * toplev.c (decode_g_option): Remove LINKER_DOES_NOT_WORK_WITH_DWARF2.
        * config/sparc/sol2-64.h: Delete and reuse for default 64-bit code.
        * config/sparc/sol2-sld-64.h: Rename ...
        * config/sparc/sol2-bi.h: ... here.  Remove the bits that checked
        for AS_SPARC64_FLAG not defined.
        * config/sparc/sol2-gld-bi.h: New.
        * config/sparc/sol2-sld.h: Remove.
        * config/sparc/sol26-sld.h: New.
        * config/sparc/sol2.h: Tidy comments.
        * doc/install.texi: Document sparc-solaris configury changes.

From-SVN: r52251

	* doc/extend.texi: Remove old claim that typedefs cannot have
	an alignment attribute.

From-SVN: r52180

2002-04-08  David S. Miller  <davem@redhat.com>

	PR target/6082
	* config/sparc/freebsd.h (SPARC_DEFAULT_CMODEL): Set to CM_MEDLOW

	Make init_priority work on Sparc when using GNU ld.
	* config/sparc/linux.h, config/sparc/linux64.h,
	config/sparc/netbsd-elf.h, config/sparc/freebsd.h
	(CTORS_SECTION_ASM_OP, DTORS_SECTION_ASM_OP): Undefine.
	* config/sparc/sol2-gld.h: New file to do the same.
	* config.gcc (sparc*-*-solaris2*): If gnu_ld=yes add
	sparc/sol2-gld.h to tm_file.

	PR optimization/4328
	* config/sparc/sparc.h (EXTRA_CONSTRAINT): Add new constraint 'W'.
	* doc/md.texi: Document it.
	* config/sparc/sparc.md (movdi_insn_sp64_novis,
	movdi_insn_sp64_vis, movdf_insn_sp32, movdf_insn_v9only_novis,
	movdf_insn_v9only_vis, movdf_insn_sp64_novis,
	movdf_insn_sp64_vis): Use it as MEM constraing with 'e' registers.
	* config/sparc/sparc.c (mem_min_alignment): Fix comment.

From-SVN: r52031

contrib.texi (Contributors): Add John David Anglin and Loren J. Rittle (the latter also to Testers).

	* doc/contrib.texi (Contributors): Add John David Anglin and Loren
	J. Rittle (the latter also to Testers).  Update David O'Brien's entry.
	* doc/contrib.texi (Contributors): Add David O'Brien.

From-SVN: r52024

* cppinit.c (cpp_create_reader): Initialize
discard_comments_in_macro_exp.
(COMMAND_LINE_OPTIONS): Add "-CC" option.
(cpp_handle_option): Handle "-CC" option.
* cpplex.c (save_comment): If saving a C++ comment in
a directive, convert it to a C comment.
(_cpp_lex_direct): Pass second comment start character to
save_comment to indicate comment type.
* cpplib.c (_cpp_handle_directive): If processing
a "#define" directive and discard_comments_in_macro_exp
is false,  re-enable saving of comments.
(lex_macro_node): If discard_comments_in_macro_exp is false,
discard any comments before the macro identifier.
* cpplib.h (struct cpp_options): Add discard_comments_in_macro_exp
member.
* cppmacro.c (cpp_get_token): If expanding a macro while
processing a directive, discard any comments we might encounter.
(parse_params): If discard_comments_in_macro_exp is false,
ignore comments in the macro parameter list.
* gcc.c (cpp_unique_options): Add "-CC" option.
(option_map): Map "--comments-in-macros" to "-CC".
* doc/cppopts.texi: Document "-CC" option.
* f/lang-specs.h: Add "-CC" option.
* testsuite/gcc.dg/cpp/maccom1.c: New test.
* testsuite/gcc.dg/cpp/maccom2.c: New test.
* testsuite/gcc.dg/cpp/maccom3.c: New test.
* testsuite/gcc.dg/cpp/maccom4.c: New test.
* testsuite/gcc.dg/cpp/maccom5.c: New test.
* testsuite/gcc.dg/cpp/maccom6.c: New test.

From-SVN: r51975

From-SVN: r51936

gcc.c (LINK_GCC_C_SEQUENCE_SPEC): New spec to override the gcc/c library sequence passed to the linker.

2002-04-03  David S. Miller  <davem@redhat.com>

	* gcc.c (LINK_GCC_C_SEQUENCE_SPEC): New spec to override the gcc/c
	library sequence passed to the linker.
	(LINK_COMMAND_SPEC): Use it.
	* doc/tm.texi: Document it, and mention from LINK_COMMAND_SPEC as
	a macro a target can use to avoid overriding LINK_COMMAND_SPEC.
	* config/sparc/sparc.h (LINK_GCC_C_SEQUENCE_SPEC): Define.

From-SVN: r51834

From-SVN: r51768

        * config/sparc/sparc.c: Remove all references to TARGET_EPILOGUE.
        (sparc_emitting_epilogue): New.
        (leaf_label, output_return, sparc_return_peephole_ok): Remove.
        * config/sparc/sparc-protos.h: Update.
        * config/sparc/sparc.h (MASK_EPILOGUE, TARGET_EPILOGUE): Remove.
        (TARGET_SWITCHES): Update.
        * config/sparc/sparc.md (return): Remove.
        (return_*): Use sparc_emitting_epilogue, not !TARGET_EPILOGUE.
        * config/sparc/freebsd.h, config/sparc/linux64.h, config/sparc/lite.h,
        config/sparc/liteelf.h, config/sparc/netbsd-elf.h,
        config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
        config/sparc/sp64-aout.h, config/sparc/sp64-elf.h,
        config/sparc/sp86x-aout.h, config/sparc/sp86x-elf.h,
        config/sparc/splet.h, config/sparc/vxsparc64.h (TARGET_DEFAULT):
        Remove MASK_EPILOGUE.
        * doc/invoke.texi: Update.

From-SVN: r51626

        * config/i386/i386.c (x86_arch_always_fancy_math_387): New.
        (override_options): Disable NO_FANCY_MATH_387 if the arch allows.
        * config/i386/i386.h (x86_arch_always_fancy_math_387): New.
        * config/i386/i386.md (sqrtxf2, sqrtextendsfxf2, sinxf2): Fix
        conditional.
        * docs/invoke.texi: Update -mno-fancy-math-387 docs.

From-SVN: r51584

	* config.gcc (*-*-freebsd*): Enable creation of libgcc_s.so.
	* config/t-slibgcc-elf-ver (SHLIB_LC): Add macro and use it.
	No functional change except ...
	* config/t-slibgcc-nolc-override (SHLIB_LC): Override it.  New file.
	* doc/install.texi (*-*-freebsd*): Document port configuration.

From-SVN: r51574

	* doc/invoke.texi (Warning Options): Refer to C++ Dialect Options
	and Objective-C Dialect Options.

From-SVN: r51526

	* configure.in (alpha*-dec-osf*): Enable libgcj.

	gcc:
	* doc/install.texi (alpha*-dec-osf*): Don't need --enable-libgcj
	any more.

From-SVN: r51483

Fix PR c/5044.

From-SVN: r51386

From-SVN: r51384

	* doc/cpp.texi: Exclude entire Top node from printed manual.
	Move option index after directive index.  Insert page breaks
	before GFDL and concept index.  Index environment variables
	with command line options.
	* doc/cppenv.texi: Use @vtable for environment variable list.
	Add paragraph explaining semantics of empty elements in path
	variables.  Exclude a cross-reference to Fishkill from the
	manpage.  Remove an unnecessary cross-reference of the entry
	right above the referer.  Don't use @anchor in text that goes
	into manpage.
	* doc/cppopts.texi: Cross-reference the environment variables
	section, not the specific environment variable, for consistency.

From-SVN: r51365

	* toplev.c: Don't include setjmp.h.  Kill float_handler_set,
	float_handled, float_handler, float_signal, set_float_handler,
	and do_float_handler.  Set handler for SIGFPE to crash_signal.
	* toplev.h: Don't prototype do_float_handler.

	* c-lex.c: Fold parse_float into lex_number.  Make warning
	about portability of hex float constants more informative, and
	don't issue it on top of a syntax error.
	* fold-const.c: Fold const_binop_1 and fold_convert_1 into
	their callers.
	* real.h: Define REAL_VALUE_ABS here...
	* simplify-rtx.c: ... not here.  Fold check_fold_consts,
	simplify_unary_real, simplify_binary_real, and
	simplify_binary_is2orm1 into their callers.
	* tree.c: Fold build_real_from_int_cst_1 into caller.

	* doc/tm.texi: Document REAL_VALUE_ABS and REAL_VALUE_NEGATIVE.

	* tsystem.h: Include float.h here...
	* libgcc2.c: ... not here.

java:
	* lex.c: Change java_perform_atof to take normal parameters
	instead of a pointer to a parameter block.  Call it directly
	from java_lex.

testsuite:
	* gcc.dg/c90-hexfloat-1.c: Adjust error regexps.

From-SVN: r51336

2002-03-23  Andrew Cagney  <ac131313@redhat.com>

	* doc/invoke.texi (Option Summary): Mention -Wswitch-default.
	(Warning Options): Document -Wswitch-default.
	* toplev.c (W_options): Add -Wswitch-default.  Update comment on
	-Wswitch.
	(warn_switch_default): Define variable.
	(warn_switch): Update comment.
	* flags.h (warn_switch_default): Declare variable.
	(warn_switch): Update comment.
	* stmt.c (expand_end_case): Check for and, when
	warn_switch_no_default, warn of a missing default case.

Index: f/ChangeLog
Sat Mar 23 11:18:17 2002  Andrew Cagney  <ac131313@redhat.com>

	* invoke.texi (Warning Options): Mention -Wswitch-default.

Index: testsuite/ChangeLog
2002-03-23  Andrew Cagney  <ac131313@redhat.com>

	* gcc.dg/Wswitch-default.c: New test.

From-SVN: r51238

	* real.h: Don't define REAL_INFINITY or REAL_IS_NOT_DOUBLE.
	Always make REAL_VALUE_TYPE a struct containing an array of
	HOST_WIDE_INT, not a double.  Tidy up the code deciding how
	big it is.  Don't declare or use union real_extract.

	* emit-rtl.c (init_emit_once), varasm.c (immed_real_const_1,
	decode_rtx_const, output_constant_pool), config/a29k/a29k.c
	(print_operand), config/arm/arm.c (output_move_double),
	config/arm/arm.md (consttable_4, consttable_8),
	config/romp/romp.c (output_fpops), config/s390/s390.h
	(ASM_OUTPUT_SPECIAL_POOL_ENTRY), config/xtensa/xtensa.c
	(xtensa_output_literal): Don't use union real_extract.

	* config/dsp16xx/dsp16xx.c (print_operand), config/i860/i860.c
	(sfmode_constant_to_ulong), config/ns32k/merlin.h
	(PRINT_OPERAND), config/ns32k/ns32k.c (print_operand),
	config/pdp11/pdp11.h (PRINT_OPERAND), config/we32k/we32k.h
	(PRINT_OPERAND): Don't use local version of union
	real_extract.

	* config/convex/convex.c (check_float_value), config/vax/vax.c
	(vax_float_literal), config/m88k/m88k.md (divdf3),
	config/dsp16xx/dsp16xx.md (fixuns_trunchfhi2),
	config/pdp11/pdp11.c (output_move_quad): Don't do host
	arithmetic on target floating point quantities.

	* config/a29k/a29k.md, config/dsp16xx/dsp16xx.c
	(output_dsp16xx_float_const): Don't test HOST_FLOAT_FORMAT.

	* fold-const.c (fold), simplify-rtx.c (simplify_binary_real):
	Use MODE_HAS_INFINITIES rather than #ifdef REAL_INFINITY.

	* real.c (earith): Test INFINITY rather than REAL_INFINITY;
	NANS implies INFINITY, so can drop #ifdef NANS inside #ifndef
	INFINITY.
	* print-rtl.c (print_rtx): Disable code which needs
	floating-point emulator.
	* libgcc2.c: Include float.h and use DBL_MANT_DIG,
	FLT_MANT_DIG, to define DF_SIZE and SF_SIZE, rather than
	depending on HOST_FLOAT_FORMAT to be defined properly.

	* ch/grant.c, cp/error.c: Always use REAL_VALUE_TO_DECIMAL;
	don't test REAL_IS_NOT_DOUBLE.

	* config/1750a/1750a.c (get_double, float_label): Delete.
	(print_operand): Delete huge commented-out chunk.  Use
	REAL_VALUE_TO_DECIMAL.
	* config/1750a/1750a-protos.h: Delete prototypes of deleted
	functions.
	* config/convex/convex.h: Always set TARGET_FLOAT_FORMAT to
	IEEE_FLOAT_FORMAT.
	* config/i370/i370.h (PRINT_OPERAND [TARGET_HLASM version]):
	Use REAL_VALUE_TO_DECIMAL as ELF version does.
	* config/m88k/m88k.c (real_power_of_2_operand,
	legitimize_operand): Take the REAL_VALUE_TYPE and/or union
	real_extract out of the union; run the input through
	REAL_VALUE_TO_TARGET_DOUBLE, then plug the pair of longwords
	from that into the union.
	* config/pdp11/pdp11.c (output_move_double): Rearrange
	parentheses to make automatic indenter happy.

	* doc/tm.texi (Cross-compilation): Rename node to "Floating
	Point" and rewrite to describe current situation.  Also adjust
	documentation of REAL_VALUE_TO_TARGET_SINGLE and friends to
	match code.
	* doc/rtl.texi: Adjust cross reference.

From-SVN: r51210

        * c-pragma.c (maybe_apply_renaming_pragma): New.
        (handle_pragma_redefine_extname, pending_redefine_extname): New.
        (handle_pragma_extern_prefix, pragma_extern_prefix): New.
        (init_pragma): Register them.
        * c-pragma.h (maybe_apply_renaming_pragma): Declare.
        * c-decl.c (finish_decl): Call it.
        * cp/decl.c (cp_finish_decl): Likewise.
        * doc/extend.texi: Document the new pragmas.

        * config/alpha/osf.h (CPP_SUBTARGET_SPEC): Add __EXTERN_PREFIX.
        (HANDLE_PRAGMA_EXTERN_PREFIX): New.

        * config/i386/sol2.h (CPP_PREDEFINES): Add __PRAGMA_REDEFINE_EXTNAME.
        (HANDLE_PRAGMA_REDEFINE_EXTNAME): New.
        * config/sparc/sol2.h: Likewise.

        * g++.dg/other/pragma-re-1.C: New.
        * g++.dg/other/pragma-ep-1.C: New.
        * gcc.dg/pragma-re-1.c, gcc.dg/pragma-re-2.c: New.
        * gcc.dg/pragma-ep-1.c, gcc.dg/pragma-ep-2.c: New.
        * gcc.dg/pragma-ep-3.c: New.

From-SVN: r51200

        * cpphash.h (struct cpp_reader): Remove mls_line and mls_col.
        * cpplex.c (unterminated): Delete.
        (parse_string): No string literal may extend over multiple
        lines.  Suppress the error when preprocessing assembly.
	* cppmain.c (scan_translation_unit): Strings are single-line.

        * doc/cpp.texi: Update to match.
        * testsuite/gcc.dg/cpp/multiline.c: Update to match.

From-SVN: r51195

2002-03-22  Phil Edwards  <pme@gcc.gnu.org>

	* cpplib.h (struct cpp_options):  New member, warn_endif_labels.
	* cppinit.c (cpp_create_reader):  On by default.
	(cpp_handle_option):  Handle -W[no-]endif-labels.
	(cpp_post_options):  Also enable if -pedantic.
	* cpplib.c (do_else):  Use it.
	(do_endif):  Likewise.
	* doc/cppopts.texi:  Document new option.
	* doc/invoke.texi:  Document new option.

From-SVN: r51190