D front-end changes:

    - Import dmd v2.101.0-beta.1.
    - Add predefined version `D_Optimized' when compiling with `-O'.
    - Shortened method syntax (DIP1043) is now enabled by default.
    - Array literals assigned to `scope' array variables are now
      allocated on the stack.
    - Implement `@system' variables (DIP1035), available behind the
      preview feature flag `-fpreview=systemvariables'.

D runtime changes:

    - Import druntime v2.101.0-beta.1.

Phobos changes:

    - Import phobos v2.101.0-beta.1.
    - Added `std.typecons.SafeRefCounted', that can be used in `@safe'
      code with `-fpreview=dip1000'.

gcc/d/ChangeLog:

	* d-attribs.cc (apply_user_attributes): Update for new front-end
	interface.
	* d-builtins.cc (d_init_versions): Predefine `D_Optimized' with
	compiling with optimizations enabled.
	* d-lang.cc (d_handle_option): Update for new front-end interface.
	Handle new option `-fpreview=systemvariables'.
	* dmd/MERGE: Merge upstream dmd e4f8919591.
	* dmd/VERSION: Bump version to v2.101.0-beta.1.
	* expr.cc (ExprVisitor::visit (AssignExp *)): Treat construction of
	static arrays from a call expression as a simple assignment.
	(ExprVisitor::visit (ArrayLiteralExp *)): Handle array literals with
	`scope' storage.
	* gdc.texi: Update documentation of `-fpreview=' options.
	* lang.opt (fpreview=shortenedmethods): Remove.
	(fpreview=systemvariables):  New option.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime e4f8919591.
	* src/MERGE: Merge upstream phobos 3ad507b51.

gcc/testsuite/ChangeLog:

	* gdc.dg/simd19630.d: Move tests with errors to ...
	* gdc.dg/simd19630b.d: ... here.  New test.
	* gdc.dg/simd19630c.d: New test.
	* gdc.dg/simd_ctfe.d: Removed.
	* gdc.dg/simd18867.d: New test.
	* gdc.dg/simd19788.d: New test.
	* gdc.dg/simd21469.d: New test.
	* gdc.dg/simd21672.d: New test.
	* gdc.dg/simd23077.d: New test.
	* gdc.dg/simd23084.d: New test.
	* gdc.dg/simd23085.d: New test.
	* gdc.dg/torture/simd19632.d: New test.
	* gdc.dg/torture/simd20041.d: New test.
	* gdc.dg/torture/simd21673.d: New test.
	* gdc.dg/torture/simd21676.d: New test.
	* gdc.dg/torture/simd22438.d: New test.
	* gdc.dg/torture/simd23009.d: New test.
	* gdc.dg/torture/simd23077.d: New test.
	* gdc.dg/torture/simd8.d: New test.
	* gdc.dg/torture/simd9.d: New test.
	* gdc.dg/torture/simd_prefetch.d: New test.

Merge upstream druntime 47688279.

Reviewed-on: https://github.com/dlang/druntime/pull/3073

Fixes: PR d/90718
Fixes: PR d/90719

libphobos/ChangeLog:

	* libdruntime/Makefile.am (DRUNTIME_DSOURCES_LINUX): Remove
	core/sys/linux/sys/netinet/tcp.d.
	* libdruntime/Makefile.in: Regenerate.

ChangeLog:

	* Makefile.def (target_modules): Add libphobos.
	(flags_to_pass): Add GDC, GDCFLAGS, GDC_FOR_TARGET and
	GDCFLAGS_FOR_TARGET.
	(dependencies): Make libphobos depend on libatomic, libbacktrace
	configure, and zlib configure.
	(language): Add language d.
	* Makefile.in: Rebuild.
	* Makefile.tpl (BUILD_EXPORTS): Add GDC and GDCFLAGS.
	(HOST_EXPORTS): Add GDC.
	(POSTSTAGE1_HOST_EXPORTS): Add GDC and GDC_FOR_BUILD.
	(BASE_TARGET_EXPORTS): Add GDC.
	(GDC_FOR_BUILD, GDC, GDCFLAGS): New variables.
	(GDC_FOR_TARGET, GDC_FLAGS_FOR_TARGET): New variables.
	(EXTRA_HOST_FLAGS): Add GDC.
	(STAGE1_FLAGS_TO_PASS): Add GDC.
	(EXTRA_TARGET_FLAGS): Add GDC and GDCFLAGS.
	* config-ml.in: Treat GDC and GDCFLAGS like other compiler/flag
	environment variables.
	* configure: Rebuild.
	* configure.ac: Add target-libphobos to target_libraries.  Set and
	substitute GDC_FOR_BUILD and GDC_FOR_TARGET.

config/ChangeLog:

	* multi.m4: Set GDC.

gcc/ChangeLog:

	* Makefile.in (tm_d_file_list, tm_d_include_list): New variables.
	(TM_D_H, D_TARGET_DEF, D_TARGET_H, D_TARGET_OBJS): New variables.
	(tm_d.h, cs-tm_d.h, default-d.o): New rules.
	(d/d-target-hooks-def.h, s-d-target-hooks-def-h): New rules.
	(s-tm-texi): Also check timestamp on d-target.def.
	(generated_files): Add TM_D_H and d-target-hooks-def.h.
	(build/genhooks.o): Also depend on D_TARGET_DEF.
	* config.gcc (tm_d_file, d_target_objs, target_has_targetdm): New
	variables.
	* config/aarch64/aarch64-d.c: New file.
	* config/aarch64/aarch64-linux.h (GNU_USER_TARGET_D_CRITSEC_SIZE):
	Define.
	* config/aarch64/aarch64-protos.h (aarch64_d_target_versions): New
	prototype.
	* config/aarch64/aarch64.h (TARGET_D_CPU_VERSIONS): Define.
	* config/aarch64/t-aarch64 (aarch64-d.o): New rule.
	* config/arm/arm-d.c: New file.
	* config/arm/arm-protos.h (arm_d_target_versions): New prototype.
	* config/arm/arm.h (TARGET_D_CPU_VERSIONS): Define.
	* config/arm/linux-eabi.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	* config/arm/t-arm (arm-d.o): New rule.
	* config/default-d.c: New file.
	* config/glibc-d.c: New file.
	* config/gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/i386/i386-d.c: New file.
	* config/i386/i386-protos.h (ix86_d_target_versions): New prototype.
	* config/i386/i386.h (TARGET_D_CPU_VERSIONS): Define.
	* config/i386/linux-common.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	(GNU_USER_TARGET_D_CRITSEC_SIZE): Define.
	* config/i386/t-i386 (i386-d.o): New rule.
	* config/kfreebsd-gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/kopensolaris-gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/linux-android.h (ANDROID_TARGET_D_OS_VERSIONS): Define.
	* config/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/mips/linux-common.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	* config/mips/mips-d.c: New file.
	* config/mips/mips-protos.h (mips_d_target_versions): New prototype.
	* config/mips/mips.h (TARGET_D_CPU_VERSIONS): Define.
	* config/mips/t-mips (mips-d.o): New rule.
	* config/powerpcspe/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/powerpcspe/linux64.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/powerpcspe/powerpcspe-d.c: New file.
	* config/powerpcspe/powerpcspe-protos.h (rs6000_d_target_versions):
	New prototype.
	* config/powerpcspe/powerpcspe.c (rs6000_output_function_epilogue):
	Support GNU D by using 0 as the language type.
	* config/powerpcspe/powerpcspe.h (TARGET_D_CPU_VERSIONS): Define.
	* config/powerpcspe/t-powerpcspe (powerpcspe-d.o): New rule.
	* config/riscv/riscv-d.c: New file.
	* config/riscv/riscv-protos.h (riscv_d_target_versions): New
	prototype.
	* config/riscv/riscv.h (TARGET_D_CPU_VERSIONS): Define.
	* config/riscv/t-riscv (riscv-d.o): New rule.
	* config/rs6000/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/rs6000/linux64.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/rs6000/rs6000-d.c: New file.
	* config/rs6000/rs6000-protos.h (rs6000_d_target_versions): New
	prototype.
	* config/rs6000/rs6000.c (rs6000_output_function_epilogue):
	Support GNU D by using 0 as the language type.
	* config/rs6000/rs6000.h (TARGET_D_CPU_VERSIONS): Define.
	* config/rs6000/t-rs6000 (rs6000-d.o): New rule.
	* config/s390/s390-d.c: New file.
	* config/s390/s390-protos.h (s390_d_target_versions): New prototype.
	* config/s390/s390.h (TARGET_D_CPU_VERSIONS): Define.
	* config/s390/t-s390 (s390-d.o): New rule.
	* config/sparc/sparc-d.c: New file.
	* config/sparc/sparc-protos.h (sparc_d_target_versions): New
	prototype.
	* config/sparc/sparc.h (TARGET_D_CPU_VERSIONS): Define.
	* config/sparc/t-sparc (sparc-d.o): New rule.
	* config/t-glibc (glibc-d.o): New rule.
	* configure: Regenerated.
	* configure.ac (tm_d_file): New variable.
	(tm_d_file_list, tm_d_include_list, d_target_objs): Add substitutes.
	* doc/contrib.texi (Contributors): Add self for the D frontend.
	* doc/frontends.texi (G++ and GCC): Mention D as a supported language.
	* doc/install.texi (Configuration): Mention libphobos as an option for
	--enable-shared.  Mention d as an option for --enable-languages.
	(Testing): Mention check-d as a target.
	* doc/invoke.texi (Overall Options): Mention .d, .dd, and .di as file
	name suffixes.  Mention d as a -x option.
	* doc/sourcebuild.texi (Top Level): Mention libphobos.
	* doc/standards.texi (Standards): Add section on D language.
	* doc/tm.texi: Regenerated.
	* doc/tm.texi.in: Add @node for D language and ABI, and @hook for
	TARGET_CPU_VERSIONS, TARGET_D_OS_VERSIONS, and TARGET_D_CRITSEC_SIZE.
	* dwarf2out.c (is_dlang): New function.
	(gen_compile_unit_die): Use DW_LANG_D for D.
	(declare_in_namespace): Return module die for D, instead of adding
	extra declarations into the namespace.
	(gen_namespace_die): Generate DW_TAG_module for D.
	(gen_decl_die): Handle CONST_DECLSs for D.
	(dwarf2out_decl): Likewise.
	(prune_unused_types_walk_local_classes): Handle DW_tag_interface_type.
	(prune_unused_types_walk): Handle DW_tag_interface_type same as other
	kinds of aggregates.
	* gcc.c (default_compilers): Add entries for .d, .dd and .di.
	* genhooks.c: Include d/d-target.def.

gcc/po/ChangeLog:

	* EXCLUDES: Add sources from d/dmd.

gcc/testsuite/ChangeLog:

	* gcc.misc-tests/help.exp: Add D to option descriptions check.
	* gdc.dg/asan/asan.exp: New file.
	* gdc.dg/asan/gdc272.d: New test.
	* gdc.dg/compilable.d: New test.
	* gdc.dg/dg.exp: New file.
	* gdc.dg/gdc254.d: New test.
	* gdc.dg/gdc260.d: New test.
	* gdc.dg/gdc270a.d: New test.
	* gdc.dg/gdc270b.d: New test.
	* gdc.dg/gdc282.d: New test.
	* gdc.dg/gdc283.d: New test.
	* gdc.dg/imports/gdc170.d: New test.
	* gdc.dg/imports/gdc231.d: New test.
	* gdc.dg/imports/gdc239.d: New test.
	* gdc.dg/imports/gdc241a.d: New test.
	* gdc.dg/imports/gdc241b.d: New test.
	* gdc.dg/imports/gdc251a.d: New test.
	* gdc.dg/imports/gdc251b.d: New test.
	* gdc.dg/imports/gdc253.d: New test.
	* gdc.dg/imports/gdc254a.d: New test.
	* gdc.dg/imports/gdc256.d: New test.
	* gdc.dg/imports/gdc27.d: New test.
	* gdc.dg/imports/gdcpkg256/package.d: New test.
	* gdc.dg/imports/runnable.d: New test.
	* gdc.dg/link.d: New test.
	* gdc.dg/lto/lto.exp: New file.
	* gdc.dg/lto/ltotests_0.d: New test.
	* gdc.dg/lto/ltotests_1.d: New test.
	* gdc.dg/runnable.d: New test.
	* gdc.dg/simd.d: New test.
	* gdc.test/gdc-test.exp: New file.
	* lib/gdc-dg.exp: New file.
	* lib/gdc.exp: New file.

libphobos/ChangeLog:

	* Makefile.am: New file.
	* Makefile.in: New file.
	* acinclude.m4: New file.
	* aclocal.m4: New file.
	* config.h.in: New file.
	* configure: New file.
	* configure.ac: New file.
	* d_rules.am: New file.
	* libdruntime/Makefile.am: New file.
	* libdruntime/Makefile.in: New file.
	* libdruntime/__entrypoint.di: New file.
	* libdruntime/__main.di: New file.
	* libdruntime/gcc/attribute.d: New file.
	* libdruntime/gcc/backtrace.d: New file.
	* libdruntime/gcc/builtins.d: New file.
	* libdruntime/gcc/config.d.in: New file.
	* libdruntime/gcc/deh.d: New file.
	* libdruntime/gcc/libbacktrace.d.in: New file.
	* libdruntime/gcc/unwind/arm.d: New file.
	* libdruntime/gcc/unwind/arm_common.d: New file.
	* libdruntime/gcc/unwind/c6x.d: New file.
	* libdruntime/gcc/unwind/generic.d: New file.
	* libdruntime/gcc/unwind/package.d: New file.
	* libdruntime/gcc/unwind/pe.d: New file.
	* m4/autoconf.m4: New file.
	* m4/druntime.m4: New file.
	* m4/druntime/cpu.m4: New file.
	* m4/druntime/libraries.m4: New file.
	* m4/druntime/os.m4: New file.
	* m4/gcc_support.m4: New file.
	* m4/gdc.m4: New file.
	* m4/libtool.m4: New file.
	* src/Makefile.am: New file.
	* src/Makefile.in: New file.
	* src/libgphobos.spec.in: New file.
	* testsuite/Makefile.am: New file.
	* testsuite/Makefile.in: New file.
	* testsuite/config/default.exp: New file.
	* testsuite/lib/libphobos-dg.exp: New file.
	* testsuite/lib/libphobos.exp: New file.
	* testsuite/testsuite_flags.in: New file.

From-SVN: r265573