Hi,

this patch makes genrecog split its output into separate files (10 by
default) in the same vein genemit does.  The changes are mostly
mechanical again, changing printfs and puts to fprintf.
As insn-recog.cc relies on being able to call other recog functions a
header insn-recog.h is introduced that pre declares all of those.

For simplicity the number of files is determined by (re-using)
--with-insnemit-partitions.  Naming suggestions welcome :)

Bootstrapped and regtested on x86 and power10, regtested on riscv.
aarch64 bootstrap is currently blocked because of the
"maybe uninitialized" issue discussed on IRC.

Regards
 Robin

	PR target/111600

gcc/ChangeLog:

	* Makefile.in:  Add insn-recog split.
	* configure: Regenerate.
	* configure.ac: Document that the number of insnemit partitions is
	used for insn-recog as well.
	* genconditions.cc (write_one_condition): Use fprintf.
	* genpreds.cc (write_predicate_expr): Ditto.
	(write_init_reg_class_start_regs): Ditto.
	* genrecog.cc (write_header): Add header file to includes.
	(printf_indent): Use fprintf.
	(change_state): Ditto.
	(print_code): Ditto.
	(print_host_wide_int): Ditto.
	(print_parameter_value): Ditto.
	(print_test_rtx): Ditto.
	(print_nonbool_test): Ditto.
	(print_label_value): Ditto.
	(print_test): Ditto.
	(print_decision): Ditto.
	(print_state): Ditto.
	(print_subroutine_call): Ditto.
	(print_acceptance): Ditto.
	(print_subroutine_start): Ditto.
	(print_pattern): Ditto.
	(print_subroutine): Ditto.
	(print_subroutine_group): Ditto.
	(handle_arg): Add -O and -H for output and header file handling.
	(main): Use callback.
	* gentarget-def.cc (def_target_insn): Use fprintf.
	* read-md.cc (md_reader::print_c_condition): Ditto.
	* read-md.h (class md_reader): Ditto.

No change in behavior unless specifying it.

	gcc/
	* config.gcc: nvptx: Support '--with-multilib-list'.
	* config/nvptx/gen-multilib-matches.sh: Adjust.
	* configure.ac: Likewise.
	* configure: Regenerate.
	* doc/install.texi: Update.
	* doc/invoke.texi: Align.
	* config/nvptx/gen-multilib-matches-tests: Extend.

	PR bootstrap/117893
	* configure.ac: Use shell loop to remove -O flags.
	* configure: Regenerate.

Currently sed command in flag cleanup removes all the -O[0-9] flags, ignoring
the context. This leads to issues when the optimization flags is passed to
linker:

CFLAGS="-Os -Wl,-O1 -Wl,--hash-style=gnu"
is converted into
CFLAGS="-Os -Wl,-Wl,--hash-style=gnu"

Which leads to configure failure with ld: unrecognized option '-Wl,-Wl'.

gcc/
	* configure.ac: Only remove -O[0-9] if not preceded with comma
	* configure: Regenerated

Gives an opportunity to execute the code on bit level, assigning
symbolic values to the variables which don't have initial values.
Supports only CRC specific operations.

Example:

uint8_t crc;
uint8_t pol = 1;
crc = crc ^ pol;

during symbolic execution crc's value will be:
crc(8), crc(7), ... crc(1), crc(0) ^ 1

gcc/
	* Makefile.in (OBJS): Add sym-exec/sym-exec-expression.o,
	sym-exec/sym-exec-state.o, sym-exec/sym-exec-condition.o.
	* configure (sym-exec): New subdir.
	* sym-exec/sym-exec-condition.cc: New file.
	* sym-exec/sym-exec-condition.h: New file.
	* sym-exec/sym-exec-expr-is-a-helper.h: New file.
	* sym-exec/sym-exec-expression.cc: New file.
	* sym-exec/sym-exec-expression.h: New file.
	* sym-exec/sym-exec-state.cc: New file.
	* sym-exec/sym-exec-state.h: New file.

Co-authored-by: Mariam Arutunian <mariamarutunian@gmail.com>

Add "binary annotations" at the end of CodeView S_INLINESITE symbols,
which are a series of compressed integers that represent how line
numbers map to addresses.

This requires assembler support; you will need commit b3aa594d ("gas:
add .cv_ucomp and .cv_scomp pseudo-directives") in binutils.

gcc/
	* configure.ac (HAVE_GAS_CV_UCOMP): New check.
	* configure: Regenerate.
	* config.in: Regenerate.
	* dwarf2codeview.cc (enum binary_annotation_opcode): Define.
	(struct codeview_function): Add htab_next and inline_loc;
	(struct cv_func_hasher): Define.
	(cv_func_htab): New global variable.
	(new_codeview_function): Add new codeview_function to hash table.
	(codeview_begin_block): Record location of inline block.
	(codeview_end_block): Add dummy source line at end of inline block.
	(find_line_function): New function.
	(write_binary_annotations): New function.
	(write_s_inlinesite): Call write_binary_annotations.
	(codeview_debug_finish): Delete cv_func_htab.

"libdiagnostics" clashes with an existing soname in Debian, as
per:
  https://gcc.gnu.org/pipermail/gcc/2024-November/245175.html



Rename it to "libgdiagnostics" for uniqueness.

I am being deliberately vague about what the "g" stands for:
it could be "gnu", "gcc", or "gpl-licensed" as the reader desires.

ChangeLog:
	* configure.ac: Rename "libdiagnostics" to "libgdiagnostics".
	* configure: Regenerate.

gcc/ChangeLog:
	* Makefile.in: Rename "libdiagnostics" to "libgdiagnostics".
	* configure.ac: Likewise.
	* configure: Regenerate.
	* doc/install.texi: Rename "libdiagnostics" to
	"libgdiagnostics".
	* doc/libdiagnostics/*: Rename to doc/libgdiagnostics, renaming
	"libdiagnostics" to "libgdiagnostics" throughout.
	* libdiagnostics++.h: Rename to...
	* libgdiagnostics++.h: ...this, renaming "libdiagnostics" to
	"libgdiagnostics" throughout.
	* libdiagnostics.cc: Rename to...
	* libgdiagnostics.cc: ...this, renaming "libdiagnostics" to
	"libgdiagnostics" throughout.
	* libdiagnostics.h: Rename to...
	* libgdiagnostics.h: ...this, renaming "libdiagnostics" to
	"libgdiagnostics" throughout.
	* libdiagnostics.map: Rename to...
	* libgdiagnostics.map: ...this, renaming "libdiagnostics" to
	"libgdiagnostics" throughout.
	* libsarifreplay.cc: Update for renaming of "libdiagnostics"
	to "libgdiagnostics".
	* libsarifreplay.h: Likewise.
	* sarif-replay.cc: Likewise.

gcc/testsuite/ChangeLog:
	* libdiagnostics.dg/*: Rename to libgdiagnostics.dg, renaming
	"libdiagnostics" to "libgdiagnostics" throughout.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

nios2 target support in GCC was deprecated in GCC 14 as the
architecture has been EOL'ed by the vendor.  This patch removes the
entire port for GCC 15

There are still references to "nios2" in libffi and libgo.  Since those
libraries are imported into the gcc sources from master copies maintained
by other projects, those will need to be addressed elsewhere.

ChangeLog:
	* MAINTAINERS: Remove references to nios2.
	* configure.ac: Likewise.
	* configure: Regenerated.

config/ChangeLog:
	* mt-nios2-elf: Deleted.

contrib/ChangeLog:
	* config-list.mk: Remove references to Nios II.

gcc/ChangeLog:
	* common/config/nios2/*: Delete entire directory.
	* config/nios2/*: Delete entire directory.
	* config.gcc: Remove references to nios2.
	* configure.ac: Likewise.
	* doc/extend.texi: Likewise.
	* doc/install.texi: Likewise.
	* doc/invoke.texi: Likewise.
	* doc/md.texi: Likewise.
	* regenerate-opt-urls.py: Likewise.
	* config.in: Regenerated.
	* configure: Regenerated.

gcc/testsuite/ChangeLog:
	* g++.target/nios2/*: Delete entire directory.
	* gcc.target/nios2/*: Delete entire directory.
	* g++.dg/cpp0x/constexpr-rom.C: Remove refences to nios2.
	* g++.old-deja/g++.jason/thunk3.C: Likewise.
	* gcc.c-torture/execute/20101011-1.c: Likewise.
	* gcc.c-torture/execute/pr47237.c: Likewise.
	* gcc.dg/20020312-2.c: Likewise.
	* gcc.dg/20021029-1.c: Likewise.
	* gcc.dg/debug/btf/btf-datasec-1.c: Likewise.
	* gcc.dg/ifcvt-4.c: Likewise.
	* gcc.dg/stack-usage-1.c: Likewise.
	* gcc.dg/struct-by-value-1.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-33.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-34.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-35.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-36.c: Likewise.
	* lib/target-supports.exp: Likewise.

libgcc/ChangeLog:
	* config/nios2/*: Delete entire directory.
	* config.host: Remove refences to nios2.
	* unwind-dw2-fde-dip.c: Likewise.

This recent change triggered various bootstap-errors, mostly on
x86 targets because line info advance address entries were output
in the wrong section table.
The switch to the wrong line table happened in dwarfout_set_ignored_loc.
It must use the same section as the earlier called
dwarf2out_switch_text_section.

But also ft32-elf was affected, because the assembler choked on
something simple as ".2byte .LM2-.LM1", but fortunately it is
able to use native location views, the configure test was just
not executed because the ft32 "nop" instruction was missing.

gcc/ChangeLog:

	PR debug/116470
	* configure.ac: Add the "nop" instruction for cpu type ft32.
	* configure: Regenerate.
	* dwarf2out.cc (dwarf2out_set_ignored_loc): Use the correct
	line info section.

Binutils 2.42 and before don't recognize the b extension in the march
strings even though it supports zba_zbb_zbs. Add a configure check to
ignore the b in the march string if found.

gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc (riscv_subset_list::to_string):
	Skip b in march string
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Add B assembler check

Signed-off-by: Edwin Lu <ewlu@rivosinc.com>

This patch removes the zabha configure check since it's not a breaking change
and updates the existing zaamo/zalrsc comment.

gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc
	(riscv_subset_list::to_string): Remove zabha configure check
	handling and clarify zaamo/zalrsc comment.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Remove zabha configure check.

Signed-off-by: Patrick O'Neill <patrick@rivosinc.com>

Originally added in r0-44646-g204250d2fcd084 and r0-44627-gfd350d241fecf6 whic
moved -fno-common from all builds to just checking builds.

Since r10-4867-g6271dd984d7f92, GCC defaults to -fno-common. There's no need
to pass it specially for checking builds.

We could keep it for older bootstrap compilers with checking but I don't see
much value in that, it was already just a bonus before.

gcc/ChangeLog:
	* Makefile.in (NOCOMMON_FLAG): Delete.
	(GCC_WARN_CFLAGS): Drop NOCOMMON_FLAG.
	(GCC_WARN_CXXFLAGS): Drop NOCOMMON_FLAG.
	* configure.ac: Ditto.
	* configure: Regenerate.

gcc/d/ChangeLog:
	* Make-lang.in (WARN_DFLAGS): Drop NOCOMMON_FLAG.

Nick has implemented a new .base64 directive in gas (to be shipped in
the upcoming binutils 2.43; big thanks for that).
See https://sourceware.org/bugzilla/show_bug.cgi?id=31964

The following patch adjusts default_elf_asm_output_ascii (i.e.
ASM_OUTPUT_ASCII elfos.h implementation) to use it if it detects binary
data and gas supports it.

Without this patch, we emit stuff like:
        .string "\177ELF\002\001\001\003"
        .string ""
        .string ""
        .string ""
        .string ""
        .string ""
        .string ""
        .string ""
        .string "\002"
        .string ">"
...
        .string "\324\001\236 0FS\202\002E\n0@\203\004\005&\202\021\337)\021\203C\020A\300\220I\004\t\b\206(\234\0132l\004b\300\bK\006\220$0\303\020P$\233\211\002D\f"
etc., with this patch more compact
        .base64 "f0VMRgIBAQMAAAAAAAAAAAIAPgABAAAAABf3AAAAAABAAAAAAAAAAACneB0AAAAAAAAAAEAAOAAOAEAALAArAAYAAAAEAAAAQAAAAAAAAABAAEAAAAAAAEAAQAAAAAAAEAMAAAAAAAAQAwAAAAAAAAgAAAAAAAAAAwAAAAQAAABQAwAAAAAAAFADQAAAAAAAUANAAAAAAAAcAAAAAAAAABwAAAAAAAAAAQAAAAAAAAABAAAABAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAADBwOQAAAAAAMHA5AAAAAAAAEAAAAAAAAAEAAAAFAAAAAIA5AAAAAAAAgHkAAAAA"
        .base64 "AACAeQAAAAAAxSSgAgAAAADFJKACAAAAAAAQAAAAAAAAAQAAAAQAAAAAsNkCAAAAAACwGQMAAAAAALAZAwAAAADMtc0AAAAAAMy1zQAAAAAAABAAAAAAAAABAAAABgAAAGhmpwMAAAAAaHbnAwAAAABoducDAAAAAOAMAQAAAAAA4MEeAAAAAAAAEAAAAAAAAAIAAAAGAAAAkH2nAwAAAACQjecDAAAAAJCN5wMAAAAAQAIAAAAAAABAAgAAAAAAAAgAAAAAAAAABAAAAAQAAABwAwAAAAAAAHADQAAAAAAAcANAAAAAAABAAAAAAAAAAEAAAAAAAAAACAAAAAAA"
        .base64 "AAAEAAAABAAAALADAAAAAAAAsANAAAAAAACwA0AAAAAAACAAAAAAAAAAIAAAAAAAAAAEAAAAAAAAAAcAAAAEAAAAaGanAwAAAABoducDAAAAAGh25wMAAAAAAAAAAAAAAAAQAAAAAAAAAAgAAAAAAAAAU+V0ZAQAAABwAwAAAAAAAHADQAAAAAAAcANAAAAAAABAAAAAAAAAAEAAAAAAAAAACAAAAAAAAABQ5XRkBAAAAAw/WAMAAAAADD+YAwAAAAAMP5gDAAAAAPy7CgAAAAAA/LsKAAAAAAAEAAAAAAAAAFHldGQGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
        .base64 "AAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAUuV0ZAQAAABoZqcDAAAAAGh25wMAAAAAaHbnAwAAAACYGQAAAAAAAJgZAAAAAAAAAQAAAAAAAAAvbGliNjQvbGQtbGludXgteDg2LTY0LnNvLjIAAAAAAAQAAAAwAAAABQAAAEdOVQACgADABAAAAAEAAAAAAAAAAQABwAQAAAAJAAAAAAAAAAIAAcAEAAAAAwAAAAAAAAAEAAAAEAAAAAEAAABHTlUAAAAAAAMAAAACAAAAAAAAAAOAAACsqAAAgS0AAOJWAAAjNwAAXjAAAAAAAAAAAAAAF1gAAHsxAABBBwAA"
        .base64 "G0kAALGmAACwoAAAAAAAAAAAAACQhAAAAAAAAOw1AACNYgAAAAAAAFQoAAAAAAAAx3UAALZAAAAAAAAAiIUAALGeAABBlAAAWEsAAPmRAACmOgAAAAAAADh3AAAAAAAAlCAAAAAAAABymgAAaosAAMIjAAAKMQAAMkIAADU0AAAAAAAA5ZwAAAAAAAAAAAAAAAAAAFIdAAAIGQAAAAAAAMFbAAAoTQAAGDcAAIRgAAA6HgAAlxwAAAAAAADOlgAAAAAAAEhPAAARiwAAMGgAAOVtAADMFgAAAAAAAAAAAACrjgAAYl4AACZVAAA/HgAAAAAAAAAAAABqPwAAAAAA"
The patch attempts to juggle between readability and compactness, so
if it detects some hunk of the initializer that would be shorter to be
emitted as .string/.ascii directive, it does so, but if it previously
used .base64 directive it switches mode only if there is a 16+ char
ASCII-ish string.

On my #embed testcase from yesterday
unsigned char a[] = {
 #embed "cc1plus"
};
without this patch it emits 2.4GB of assembly, while with this
patch 649M.
Compile times (trunk, so yes,rtl,extra checking) are:
time ./xgcc -B ./ -S -std=c23 -O2 embed-11.c

real    0m13.647s
user    0m7.157s
sys     0m2.597s
time ./xgcc -B ./ -c -std=c23 -O2 embed-11.c

real    0m28.649s
user    0m26.653s
sys     0m1.958s
without the patch and
time ./xgcc -B ./ -S -std=c23 -O2 embed-11.c

real    0m4.283s
user    0m2.288s
sys     0m0.859s
time ./xgcc -B ./ -c -std=c23 -O2 embed-11.c

real    0m6.888s
user    0m5.876s
sys     0m1.002s
with the patch, so that feels like significant improvement.
The resulting embed-11.o is identical between the two ways of expressing
the mostly binary data in the assembly.  But note that there are portions
like:
        .base64 "nAAAAAAAAAAvZRcAIgAOAFAzMwEAAAAABgAAAAAAAACEQBgAEgAOAFBHcAIAAAAA7AAAAAAAAAAAX19nbXB6X2dldF9zaQBtcGZyX3NldF9zaV8yZXhwAG1wZnJfY29zaABtcGZyX3RhbmgAbXBmcl9zZXRfbmFuAG1wZnJfc3ViAG1wZnJfdGFuAG1wZnJfc3RydG9mcgBfX2dtcHpfc3ViX3VpAF9fZ21wX2dldF9tZW1vcnlfZnVuY3Rpb25zAF9fZ21wel9zZXRfdWkAbXBmcl9wb3cAX19nbXB6X3N1YgBfX2dtcHpfZml0c19zbG9uZ19wAG1wZnJfYXRh"
        .base64 "bjIAX19nbXB6X2RpdmV4YWN0AG1wZnJfc2V0X2VtaW4AX19nbXB6X3NldABfX2dtcHpfbXVsAG1wZnJfY2xlYXIAbXBmcl9sb2cAbXBmcl9hdGFuaABfX2dtcHpfc3dhcABtcGZyX2FzaW5oAG1wZnJfYXNpbgBtcGZyX2NsZWFycwBfX2dtcHpfbXVsXzJleHAAX19nbXB6X2FkZG11bABtcGZyX3NpbmgAX19nbXB6X2FkZF91aQBfX2dtcHFfY2xlYXIAX19nbW9uX3N0YXJ0X18AbXBmcl9hY29zAG1wZnJfc2V0X2VtYXgAbXBmcl9jb3MAbXBmcl9zaW4A"
        .string "__gmpz_ui_pow_ui"
        .string "mpfr_get_str"
        .string "mpfr_acosh"
        .string "mpfr_sub_ui"
        .string "__gmpq_set_ui"
        .string "mpfr_set_inf"
...
        .string "GLIBC_2.14"
        .string "GLIBC_2.11"
        .base64 "AAABAAIAAQADAAMAAwADAAMAAwAEAAUABgADAAEAAQADAAMABwABAAEAAwADAAMAAwAIAAEAAwADAAEAAwABAAMAAwABAAMAAQADAAMAAwADAAMAAwADAAYAAwADAAEAAQAIAAMAAwADAAMAAwABAAMAAQADAAMAAQABAAEAAwAIAAEAAwADAAEAAwABAAMAAQADAAEABgADAAMAAQAHAAMAAwADAAMAAwABAAMAAQABAAMAAwADAAkAAQABAAEAAwAKAAEAAwADAAMAAQABAAMAAwALAAEAAwADAAEAAQADAAMAAwABAAMAAwABAAEAAwADAAMABwABAAMAAwAB"
        .base64 "AAEAAwADAAEAAwABAAMAAQADAAMAAwADAAEAAQABAAEAAwADAAMAAQABAAEAAQABAAEAAQADAAMAAwADAAMAAQABAAwAAwADAA0AAwADAAMAAwADAAEAAQADAAMAAQABAAMAAwADAAEAAwADAAEAAwAIAAMAAwADAAMABgABAA4ACwAGAAEAAQADAAEAAQADAAEAAwABAAMAAwABAAEAAwABAAMAAwABAAEAAwADAAMAAwABAAMAAQABAAEAAQABAAMADwABAAMAAQADAAMAAwABAAEAAQAIAAEADAADAAMAAQABAAMAAwADAAEAAQABAAEAAQADAAEAAwADAAEA"
        .base64 "AwABAAMAAQADAAMAAQABAAEAAwADAAMAAwADAAMAAQADAAMACAAQAA8AAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQABAAEAAQA="
so it isn't all just totally unreadable stuff.

2024-07-15  Jakub Jelinek  <jakub@redhat.com>

	* configure.ac (HAVE_GAS_BASE64): New check.
	* config/elfos.h (BASE64_ASM_OP): Define if HAVE_GAS_BASE64 is
	defined.
	* varasm.cc (assemble_string): Bump maximum from 2000 to 16384 if
	BASE64_ASM_OP is defined.
	(default_elf_asm_output_limited_string): Emit opening '"' together
	with STRING_ASM_OP.
	(default_elf_asm_output_ascii): Use BASE64_ASM_OP if defined and
	beneficial.  Remove UB when last_null is NULL.
	* configure: Regenerate.
	* config.in: Regenerate.

The Zabha extension adds support for subword Zaamo ops.

Extension: https://github.com/riscv/riscv-zabha.git
Ratification: https://jira.riscv.org/browse/RVS-1685



gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc
	(riscv_subset_list::to_string): Skip zabha when not supported by
	the assembler.
	* config.in: Regenerate.
	* config/riscv/arch-canonicalize: Make zabha imply zaamo.
	* config/riscv/iterators.md (amobh): Add iterator for amo
	byte/halfword.
	* config/riscv/riscv.opt: Add zabha.
	* config/riscv/sync.md (atomic_<atomic_optab><mode>): Add
	subword atomic op pattern.
	(zabha_atomic_fetch_<atomic_optab><mode>): Add subword
	atomic_fetch op pattern.
	(lrsc_atomic_fetch_<atomic_optab><mode>): Prefer zabha over lrsc
	for subword atomic ops.
	(zabha_atomic_exchange<mode>): Add subword atomic exchange
	pattern.
	(lrsc_atomic_exchange<mode>): Prefer zabha over lrsc for subword
	atomic exchange ops.
	* configure: Regenerate.
	* configure.ac: Add zabha assembler check.
	* doc/sourcebuild.texi: Add zabha documentation.

gcc/testsuite/ChangeLog:

	* lib/target-supports.exp: Add zabha testsuite infra support.
	* gcc.target/riscv/amo/inline-atomics-1.c: Remove zabha to continue to
	test the lr/sc subword patterns.
	* gcc.target/riscv/amo/inline-atomics-2.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-rvwmo-subword-amo-add-char-acq-rel.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-rvwmo-subword-amo-add-char-acquire.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-rvwmo-subword-amo-add-char-relaxed.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-rvwmo-subword-amo-add-char-release.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-rvwmo-subword-amo-add-char-seq-cst.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-ztso-subword-amo-add-char-acq-rel.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-ztso-subword-amo-add-char-acquire.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-ztso-subword-amo-add-char-relaxed.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-ztso-subword-amo-add-char-release.c: Ditto.
	* gcc.target/riscv/amo/zalrsc-ztso-subword-amo-add-char-seq-cst.c: Ditto.
	* gcc.target/riscv/amo/zabha-all-amo-ops-char-run.c: New test.
	* gcc.target/riscv/amo/zabha-all-amo-ops-short-run.c: New test.
	* gcc.target/riscv/amo/zabha-rvwmo-all-amo-ops-char.c: New test.
	* gcc.target/riscv/amo/zabha-rvwmo-all-amo-ops-short.c: New test.
	* gcc.target/riscv/amo/zabha-rvwmo-amo-add-char.c: New test.
	* gcc.target/riscv/amo/zabha-rvwmo-amo-add-short.c: New test.
	* gcc.target/riscv/amo/zabha-ztso-amo-add-char.c: New test.
	* gcc.target/riscv/amo/zabha-ztso-amo-add-short.c: New test.

Co-Authored-By: Patrick O'Neill <patrick@rivosinc.com>
Signed-Off-By: Gianluca Guida <gianluca@rivosinc.com>
Tested-by: Andrea Parri <andrea@rivosinc.com>

We check gcc_cv_as_mips_explicit_relocs if gcc_cv_as_mips_explicit_relocs_pcrel
only, while gcc_cv_as_mips_explicit_relocs is used by later code.

Maybe, it is time for use to set gcc_cv_as_mips_explicit_relocs always now,
as it has been in Binutils for more than 20 years.

gcc
	* configure.ac: Set gcc_cv_as_mips_explicit_relocs if
	gcc_cv_as_mips_explicit_relocs_pcrel.
	* configure: Regenerate.

This reverts commit c6a9ab8c.

When dlopen and pthread_create are in libc the variable is
set to "none required", therefore running configure will show
the following errors:

./configure: line 8997: test: too many arguments
./configure: line 8999: test: too many arguments
./configure: line 9003: test: too many arguments
./configure: line 9005: test: =: unary operator expected

gcc/configure also has a similar problem on
gcc_cv_as_mips_explicit_relocs:

./gcc/configure: line 30242: test: =: unary operator expected

ChangeLog:

	* configure.ac: Quote variable result of AC_SEARCH_LIBS.
	* configure: Regenerate.

gcc/ChangeLog:

	* configure.ac: Add missing quotation of variable
	gcc_cv_as_mips_explicit_relocs.
	* configure: Regenerate.

Signed-off-by: Collin Funk <collin.funk1@gmail.com>

Binutils 2.42 and before don't support Zaamo/Zalrsc. Add a configure
check to prevent emitting Zaamo/Zalrsc in the arch string when the
assember does not support it.

gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc
	(riscv_subset_list::to_string): Skip zaamo/zalrsc when not
	supported by the assembler.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Add zaamo/zalrsc assmeber check.

Signed-off-by: Patrick O'Neill <patrick@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V

For one setting ld_ver in a conditional (no in-tree ld) when it's used,
for x86 at least, in unconditional ways can't be quite right. And then
prefixing relative paths to binaries with ${objdir}/, when ${objdir}
nowadays resolves to just .libs, can at best be a leftover that wasn't
properly cleaned up at some earlier point.

gcc/

	* configure.ac: Drop ${objdir}/ from NM and AR. Move setting of
	ld_ver out of conditional.
	* configure: Re-generate.

Support for Solaris 11.3 had already been obsoleted in GCC 13.  However,
since the only Solaris system in the cfarm was running 11.3, I've kept
it in tree until now when both Solaris 11.4/SPARC and x86 systems have
been added.

This patch actually removes the Solaris 11.3 support.  Apart from
several minor simplifications, there are two more widespread changes:

* In Solaris 11.4, libsocket and libnsl were folded into libc, so
  there's no longer a need to link them explictly.

* Since Solaris 11.4, Solaris includes all crts needed by gcc (like
  crt1.o and gcrt1.o) with the base system.  All workarounds to provide
  fallbacks can thus go.

Bootstrapped without regressions on i386-pc-solaris2.11 and
sparc-sun-solaris2.11 (as/ld, gas/ld, and gas/gld) as well as Solaris
11.3/x86 to ascertain that version is actually rejected.

2024-04-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	c++tools:
	* configure.ac (ax_lib_socket_nsl.m4): Don't sinclude.
	(AX_LIB_SOCKET_NSL): Don't call.
	(NETLIBS): Remove.
	* configure: Regenerate.
	* Makefile.in (NETLIBS): Remove.
	(g++-mapper-server$(exeext)): Remove $(NETLIBS).

	gcc:
	* config.gcc: Move *-*-solaris2.11.[0-3]* to unsupported list.
	<*-*-solaris2*> (default_use_cxa_atexit): Set unconditionally.
	* configure.ac (AX_LIB_SOCKET_NSL): Don't call.
	(NETLIBS): Remove.
	(gcc_cv_ld_aligned_shf_merge): Remove.
	(hidden_linkonce) <i?86-*-solaris2* | x86_64-*-solaris2*>: Remove.
	(gcc_cv_target_dl_iterate_phdr) <*-*-solaris2*>: Always set to yes.
	* Makefile.in (NETLIBS): Remove.
	* configure, config.in, aclocal.m4: Regenerate.
	* config/sol2.h: Don't check HAVE_SOLARIS_CRTS.
	(STARTFILE_SPEC): Remove !HAVE_SOLARIS_CRTS case.
	[USE_GLD] (LINK_EH_SPEC): Remove TARGET_DL_ITERATE_PHDR guard.
	* config/i386/i386.cc (USE_HIDDEN_LINKONCE): Remove guard.
	* varasm.cc (mergeable_string_section): Remove
	HAVE_LD_ALIGNED_SHF_MERGE handling.
	(mergeable_constant_section): Likewise.

	* doc/install.texi (Specific,i?86-*-solaris2*): Reference Solaris
	11.4 only.
	(Specific, *-*-solaris2*): Document Solaris 11.3 removal.  Remove
	11.3 references and caveats.  Update for 11.4.

	gcc/cp:
	* Make-lang.in (cc1plus$(exeext)): Remove $(NETLIBS).

	gcc/objcp:
	* Make-lang.in (cc1objplus$(exeext)): Remove $(NETLIBS).

	gcc/testsuite:
	* lib/target-supports.exp (check_effective_target_pie): Always
	enable on *-*-solaris2*.

	libgcc:
	* configure.ac <*-*-solaris2*> (libgcc_cv_solaris_crts): Remove.
	* config.host <*-*-solaris2*>: Remove !libgcc_cv_solaris_crts
	support.
	* configure, config.in: Regenerate.
	* config/sol2/gmon.c (internal_mcount) [!HAVE_SOLARIS_CRTS]: Remove.
	* config/i386/sol2-c1.S, config/sparc/sol2-c1.S: Remove.
	* config/sol2/t-sol2 (crt1.o, gcrt1.o): Remove.

	libstdc++-v3:
	* testsuite/lib/dg-options.exp (add_options_for_net_ts)
	<*-*-solaris2*>: Don't link with -lsocket -lnsl.

This patch moves the documentation root URL infix for release branches
from get_option_url/make_doc_url to configure, such that only the default
changes and when users specify a custom documentation root URL, they don't
have to add gcc-MAJOR.MINOR.0 subdirectories for release branches.

Tested by checking
../configure --disable-bootstrap --enable-languages=c --disable-multilib
built trunk on
void
foo (int x)
{
  __builtin_printf ("%ld\n", x);
}
testcase and looking for the URL in there, then repeating that after
changing gcc/BASE-VER to 14.1.0 and again after changing it to 14.1.1,
plus normal bootstrap/regtest.

2024-04-24  Jakub Jelinek  <jakub@redhat.com>

	PR other/114738
	* opts.cc (get_option_url): Revert 2024-04-17 changes.
	* gcc-urlifier.cc: Don't include diagnostic-core.h.
	(gcc_urlifier::make_doc_url): Revert 2024-04-17 changes.
	* configure.ac (documentation-root-url): On release branches
	append gcc-MAJOR.MINOR.0/ to the default DOCUMENTATION_ROOT_URL.
	* doc/install.texi (--with-documentation-root-url=): Document
	the change of the default.
	* configure: Regenerate.

If assembler and linker supports

add %reg1, name@gottpoff(%rip), %reg2

with R_X86_64_CODE_6_GOTTPOFF, we can generate it instead of

mov name@gottpoff(%rip), %reg2
add %reg1, %reg2

gcc/

	* configure.ac (HAVE_AS_R_X86_64_CODE_6_GOTTPOFF): Defined as 1
	if R_X86_64_CODE_6_GOTTPOFF is supported.
	* config.in: Regenerated.
	* configure: Likewise.
	* config/i386/predicates.md (apx_ndd_add_memory_operand): Allow
	UNSPEC_GOTNTPOFF if R_X86_64_CODE_6_GOTTPOFF is supported.

gcc/testsuite/

	* gcc.target/i386/apx-ndd-tls-1b.c: New test.
	* lib/target-supports.exp
	(check_effective_target_code_6_gottpoff_reloc): New.

LoongArch: When checking whether the assembler supports conditional branch relaxation, add compilation parameter "--fatal-warnings" to the assembler.

In binutils 2.40 and earlier versions, only a warning will be reported
when a relocation immediate value is out of bounds. As a result,
the value of the macro HAVE_AS_COND_BRANCH_RELAXATION will also be
defined as 1 when the assembler does not support conditional branch
relaxation. Therefore, add the compilation option "--fatal-warnings"
to avoid this problem.

gcc/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Add parameter "--fatal-warnings" to assemble
	when checking whether the assemble support conditional branch
	relaxation.

BUILD_INFO is currently a byproduct of checking makeinfo
presence/version.  INSTALL_INFO used to be defined similarly, but was
removed in 2000 (!) by commit 17db6582
(svn r38141).

In order to save build time, our CI overrides MAKEINFO=echo, which
works when invoking 'make all' but not for 'make install' in case some
info files need an update.

I noticed this while testing a patch posted on the gcc-patches list,
leading to an error at 'make install' time after updating tm.texi (the
build reported 'new text' in tm.texi and stopped).  This is because
'install' depends on 'install-info', which depends on
$(DESTDIR)$(infodir)/gccint.info (among others).

As discussed, it is better to detect this problem during 'make all'
rather than 'make install', and we still want to detect it even if
makeinfo is not available.

This patch makes configure set BUILD_INFO=no-info in case makeinfo is
missing/too old, which effectively makes the build rules no-ops
(x$(BUILD_INFO) != xinfo), and updates Makefile.in so that 'info'
dependencies are still checked.

2024-02-10  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/
	* Makefile.in: Add no-info dependency.
	* configure.ac: Set BUILD_INFO=no-info if makeinfo is not
	available.
	* configure: Regenerate.

gcc_cv_as_mips_explicit should be gcc_cv_as_mips_explicit_relocs.
This was introduced in commit
58af788d.

gcc
	PR target/113655
	* configure.ac: Fix typo gcc_cv_as_mips_explicit should be
	gcc_cv_as_mips_explicit_relocs.
	* configure: Regnerated.

GAS introduced explicit relocs since 2001, and %pcrel_hi/low were
introduced in 2014.  In future, we may introduce more.

Let's convert -mexplicit-relocs option, and accpet options:
    none, base, pcrel.

We also update gcc/configure.ac to set the value to option
the gas support when GCC itself is built.

gcc
	* configure.ac: Detect the explicit relocs support for
	mips, and define C macro MIPS_EXPLICIT_RELOCS.
	* config.in: Regenerated.
	* configure: Regenerated.
	* doc/invoke.texi(MIPS Options): Add -mexplicit-relocs.
	* config/mips/mips-opts.h: Define enum mips_explicit_relocs.
	* config/mips/mips.cc(mips_set_compression_mode): Sorry if
	!TARGET_EXPLICIT_RELOCS instead of just set it.
	* config/mips/mips.h: Define TARGET_EXPLICIT_RELOCS and
	TARGET_EXPLICIT_RELOCS_PCREL with mips_opt_explicit_relocs.
	* config/mips/mips.opt: Introduce -mexplicit-relocs= option
	and define -m(no-)explicit-relocs as aliases.

This patch adds a new "sarif-replay" command-line tool for
viewing .sarif files.  It uses libdiagnostics to "replay"
any diagnostics found in the .sarif files in text form as if
they were GCC diagnostics.

contrib/ChangeLog:
	PR other/96032
	* regenerate-sarif-spec-index.py: New file.

gcc/ChangeLog:
	PR other/96032
	* Makefile.in (lang_checks): If libdiagnostics is enabled, add
	check-sarif-replay.
	(SARIF_REPLAY_OBJS): New.
	(ALL_HOST_OBJS): If libdiagnostics is enabled, add
	$(SARIF_REPLAY_OBJS).
	(sarif-replay): New.
	(install-libdiagnostics): Add sarif-replay to deps, and install
	it.
	* configure: Regenerate.
	* configure.ac (check_languages): If libdiagnostics is enabled,
	add check-sarif-replay.
	(LIBDIAGNOSTICS): If libdiagnostics is enabled, add sarif-replay.
	* doc/install.texi (--enable-libdiagnostics): Note that it also
	enables sarif-replay.
	* libsarifreplay.cc: New file.
	* libsarifreplay.h: New file.
	* sarif-replay.cc: New file.
	* sarif-spec-urls.def: New file.

gcc/testsuite/ChangeLog:
	PR other/96032
	* lib/gcc-dg.exp (gcc-dg-test-1): Add "replay-sarif".
	* lib/sarif-replay-dg.exp: New file.
	* lib/sarif-replay.exp: New file.
	* sarif-replay.dg/2.1.0-invalid/3.1-not-an-object.sarif: New test.
	* sarif-replay.dg/2.1.0-invalid/3.11.11-malformed-placeholder.sarif:
	New test.
	* sarif-replay.dg/2.1.0-invalid/3.11.11-missing-arguments-for-placeholders.sarif:
	New test.
	* sarif-replay.dg/2.1.0-invalid/3.11.11-not-enough-arguments-for-placeholders.sarif:
	New test.
	* sarif-replay.dg/2.1.0-invalid/3.13.2-no-version.sarif: New test.
	* sarif-replay.dg/2.1.0-invalid/3.13.2-version-not-a-string.sarif:
	New test.
	* sarif-replay.dg/2.1.0-invalid/3.13.4-bad-runs.sarif: New test.
	* sarif-replay.dg/2.1.0-invalid/3.13.4-no-runs.sarif: New test.
	* sarif-replay.dg/2.1.0-invalid/3.13.4-non-object-in-runs.sarif:
	New test.
	* sarif-replay.dg/2.1.0-invalid/3.27.10-bad-level.sarif: New test.
	* sarif-replay.dg/2.1.0-unhandled/3.27.10-none-level.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/error-with-note.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/escaped-braces.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/null-runs.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/signal-1.c.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/spec-example-1.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/spec-example-2.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/spec-example-3.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/spec-example-4.sarif: New test.
	* sarif-replay.dg/2.1.0-valid/tutorial-example.sarif: New test.
	* sarif-replay.dg/dg.exp: New script.
	* sarif-replay.dg/malformed-json/array-missing-comma.sarif: New test.
	* sarif-replay.dg/malformed-json/array-with-trailing-comma.sarif:
	New test.
	* sarif-replay.dg/malformed-json/bad-token.sarif: New test.
	* sarif-replay.dg/malformed-json/object-missing-comma.sarif: New test.
	* sarif-replay.dg/malformed-json/object-with-trailing-comma.sarif:
	New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

This patch adds a new libdiagnostics shared library available as
part of the GCC build via --enable-libdiagnostics when
configuring GCC.

It combines the following patches from:
  https://gcc.gnu.org/pipermail/gcc-patches/2024-November/668632.html


    [PATCH 1/8] libdiagnostics v4: header
    [PATCH 2/8] libdiagnostics v4: implementation
    [PATCH 3/8] libdiagnostics: add API docs
    [PATCH 4/8] libdiagnostics v4: add C++ wrapper API
    [PATCH 6/8] libdiagnostics v4: test suite

ChangeLog:
	* configure.ac (--enable-libdiagnostics): New.
	* configure: Regenerate.

gcc/ChangeLog:
	* configure.ac (check_languages): Add check-libdiagnostics.
	(--enable-libdiagnostics): New.
	* configure: Regenerate.
	* Makefile.in (enable_libdiagnostics): New.
	(lang_checks): If libdiagnostics is enabled, add
	check-libdiagnostics.
	(ALL_HOST_OBJS): If libdiagnostics is enabled, add
	$(libdiagnostics_OBJS).
	(start.encap): Add LIBDIAGNOSTICS.
	(libdiagnostics_OBJS): New.
	(LIBDIAGNOSTICS_VERSION_NUM): New, adapted from code in
	jit/Make-lang.in.
	(LIBDIAGNOSTICS_MINOR_NUM): Likewise.
	(LIBDIAGNOSTICS_RELEASE_NUM): Likewise.
	(LIBDIAGNOSTICS_FILENAME): Likewise.
	(LIBDIAGNOSTICS_IMPORT_LIB): Likewise.
	(libdiagnostics): Likewise.
	(LIBDIAGNOSTICS_AGE): Likewise.
	(LIBDIAGNOSTICS_BASENAME): Likewise.
	(LIBDIAGNOSTICS_SONAME): Likewise.
	(LIBDIAGNOSTICS_LINKER_NAME): Likewise.
	(LIBDIAGNOSTICS_COMMA): Likewise.
	(LIBDIAGNOSTICS_VERSION_SCRIPT_OPTION): Likewise.
	(LIBDIAGNOSTICS_SONAME_OPTION): Likewise.
	(LIBDIAGNOSTICS_SONAME_SYMLINK): Likewise.
	(LIBDIAGNOSTICS_LINKER_NAME_SYMLINK): Likewise.
	(LIBDIAGNOSTICS_FILENAME): Likewise.
	(libdiagnostics.serial): Likewise.
	(LIBDIAGNOSTICS_EXTRA_OPTS): Likewise.
	(install): If libdiagnostics is enabled, add
	install-libdiagnostics.
	(libdiagnostics.install-headers): New.
	(libdiagnostics.install-common): New, adapted from code in
	jit/Make-lang.in.
	(install-libdiagnostics): New.
	* diagnostic-format-text.h
	(diagnostic_text_output_format::get_location_text): Make public.
	* doc/install.texi (--enable-libdiagnostics): New.
	* doc/libdiagnostics/Makefile: New file.
	* doc/libdiagnostics/conf.py: New file.
	* doc/libdiagnostics/index.rst: New file.
	* doc/libdiagnostics/make.bat: New file.
	* doc/libdiagnostics/topics/diagnostic-manager.rst: New file.
	* doc/libdiagnostics/topics/diagnostics.rst: New file.
	* doc/libdiagnostics/topics/execution-paths.rst: New file.
	* doc/libdiagnostics/topics/fix-it-hints.rst: New file.
	* doc/libdiagnostics/topics/index.rst: New file.
	* doc/libdiagnostics/topics/logical-locations.rst: New file.
	* doc/libdiagnostics/topics/message-formatting.rst: New file.
	* doc/libdiagnostics/topics/metadata.rst: New file.
	* doc/libdiagnostics/topics/physical-locations.rst: New file.
	* doc/libdiagnostics/topics/retrofitting.rst: New file.
	* doc/libdiagnostics/topics/sarif.rst: New file.
	* doc/libdiagnostics/topics/text-output.rst: New file.
	* doc/libdiagnostics/topics/ux.rst: New file.
	* doc/libdiagnostics/tutorial/01-hello-world.rst: New file.
	* doc/libdiagnostics/tutorial/02-physical-locations.rst: New file.
	* doc/libdiagnostics/tutorial/03-logical-locations.rst: New file.
	* doc/libdiagnostics/tutorial/04-notes.rst: New file.
	* doc/libdiagnostics/tutorial/05-warnings.rst: New file.
	* doc/libdiagnostics/tutorial/06-fix-it-hints.rst: New file.
	* doc/libdiagnostics/tutorial/07-execution-paths.rst: New file.
	* doc/libdiagnostics/tutorial/index.rst: New file.
	* libdiagnostics++.h: New file.
	* libdiagnostics.cc: New file.
	* libdiagnostics.h: New file.
	* libdiagnostics.map: New file.

gcc/testsuite/ChangeLog:
	* libdiagnostics.dg/libdiagnostics.exp: New, adapted from jit.exp.
	* libdiagnostics.dg/sarif.py: New.
	* libdiagnostics.dg/test-dump.c: New test.
	* libdiagnostics.dg/test-error-c.py: New test.
	* libdiagnostics.dg/test-error-with-note-c.py: New test.
	* libdiagnostics.dg/test-error-with-note.c: New test.
	* libdiagnostics.dg/test-error-with-note.cc: New test.
	* libdiagnostics.dg/test-error.c: New test.
	* libdiagnostics.dg/test-error.cc: New test.
	* libdiagnostics.dg/test-example-1.c: New test.
	* libdiagnostics.dg/test-fix-it-hint-c.py: New test.
	* libdiagnostics.dg/test-fix-it-hint.c: New test.
	* libdiagnostics.dg/test-fix-it-hint.cc: New test.
	* libdiagnostics.dg/test-helpers++.h: New test.
	* libdiagnostics.dg/test-helpers.h: New test.
	* libdiagnostics.dg/test-labelled-ranges.c: New test.
	* libdiagnostics.dg/test-labelled-ranges.cc: New test.
	* libdiagnostics.dg/test-labelled-ranges.py: New test.
	* libdiagnostics.dg/test-logical-location-c.py: New test.
	* libdiagnostics.dg/test-logical-location.c: New test.
	* libdiagnostics.dg/test-metadata-c.py: New test.
	* libdiagnostics.dg/test-metadata.c: New test.
	* libdiagnostics.dg/test-multiple-lines-c.py: New test.
	* libdiagnostics.dg/test-multiple-lines.c: New test.
	* libdiagnostics.dg/test-no-column-c.py: New test.
	* libdiagnostics.dg/test-no-column.c: New test.
	* libdiagnostics.dg/test-no-diagnostics-c.py: New test.
	* libdiagnostics.dg/test-no-diagnostics.c: New test.
	* libdiagnostics.dg/test-note-with-fix-it-hint-c.py: New test.
	* libdiagnostics.dg/test-note-with-fix-it-hint.c: New test.
	* libdiagnostics.dg/test-text-sink-options.c: New test.
	* libdiagnostics.dg/test-warning-c.py: New test.
	* libdiagnostics.dg/test-warning-with-path-c.py: New test.
	* libdiagnostics.dg/test-warning-with-path.c: New test.
	* libdiagnostics.dg/test-warning.c: New test.
	* libdiagnostics.dg/test-write-sarif-to-file-c.py: New test.
	* libdiagnostics.dg/test-write-sarif-to-file.c: New test.
	* libdiagnostics.dg/test-write-text-to-file.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

r15-5257-g56ded80b96b0f6 didn't regenerate configure correctly.

See https://inbox.sourceware.org/gcc-patches/ZzZf69gORVPRo6Ct@zen.kayari.org/.

gcc/ChangeLog:

	* configure: Regenerate.

This enables Guarded Control Stack (GCS) compatible code generation.

The "standard" branch-protection type enables it, and the default
depends on the compiler default.

gcc/ChangeLog:

	* config/aarch64/aarch64-protos.h (aarch_gcs_enabled): Declare.
	* config/aarch64/aarch64.cc (aarch_gcs_enabled): Define.
	(aarch_handle_no_branch_protection): Handle gcs.
	(aarch_handle_standard_branch_protection): Handle gcs.
	(aarch_handle_gcs_protection): New.
	* config/aarch64/aarch64.opt: Add aarch_enable_gcs.
	* configure: Regenerate.
	* configure.ac: Handle gcs in --enable-standard-branch-protection.
	* doc/invoke.texi: Document -mbranch-protection=gcs.

Reported by Andrew Stubbs

gcc/ChangeLog:

	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Check for HAVE_CLOCK_GETTIME.
	* timevar.cc (get_time): Use HAVE_CLOCK_GETTIME.

The following patch adds selftests to genmatch to verify the new printing
routine there.
So that I can rely on HAVE_DECL_FMEMOPEN (host test), the tests are done
solely in stage2+ where we link the host libcpp etc. to genmatch.
The tests have been adjusted from pretty-print.cc (test_pp_format),
and I've added to that function two new tests because I've noticed nothing
was testing the %M$.*N$s etc. format specifiers.

2024-10-27  Jakub Jelinek  <jakub@redhat.com>

	* configure.ac (gcc_AC_CHECK_DECLS): Add fmemopen.
	* configure: Regenerate.
	* config.in: Regenerate.
	* Makefile.in (build/genmatch.o): Add -DGENMATCH_SELFTESTS to
	BUILD_CPPFLAGS for stage2+ genmatch.
	* genmatch.cc (test_diag_vfprintf, genmatch_diag_selftests): New
	functions.
	(main): Call genmatch_diag_selftests.
	* pretty-print.cc (test_pp_format): Add two tests, one for %M$.*N$s
	and one for %M$.Ns.

We've been using -Wno-narrowing since gcc 4.7, but at this point narrowing
diagnostics seem like a stable part of C++ and we should adjust.

This patch changes -Wno-narrowing to -Wno-error=narrowing so that narrowing
issues will still not break bootstrap, but we can see them.

The rest of the patch fixes the narrowing warnings I see in an
x86_64-pc-linux-gnu bootstrap.  In most of the cases, by adjusting the types
of various declarations so that we store the values in the same types we
compute them in, which seems worthwhile anyway.  This also allowed us to
remove a few -Wsign-compare casts.

gcc/ChangeLog:

	* configure.ac (CXX_WARNING_OPTS): Change -Wno-narrowing
	to -Wno-error=narrowing.
	* configure: Regenerate.
	* config/i386/i386.h (debugger_register_map)
	(debugger64_register_map)
	(svr4_debugger_register_map): Make unsigned.
	* config/i386/i386.cc: Likewise.
	* diagnostic-event-id.h (diagnostic_thread_id_t): Make int.
	* vec.h (vec::size): Make unsigned int.
	* ipa-modref.cc (escape_point::arg): Make unsigned.
	(modref_lattice::add_escape_point): Use eaf_flags_t.
	(update_escape_summary_1): Use eaf_flags_t, && for bool.
	* pair-fusion.cc (pair_fusion_bb_info::track_access):
	Make mem_size unsigned int.
	* pretty-print.cc (format_phase_2): Cast va_arg to char.
	* tree-ssa-loop-ch.cc (ch_base::copy_headers): Make nheaders
	unsigned, remove cast.
	* tree-ssa-structalias.cc (bitpos_of_field): Return unsigned.
	(push_fields_onto_fieldstack):Make offset unsigned, remove cast.
	* tree-vect-slp.cc (vect_prologue_cost_for_slp): Use nelt_limit.
	* tree-vect-stmts.cc (vect_truncate_gather_scatter_offset):
	Make scale unsigned.
	(vectorizable_operation): Make ncopies unsigned.
	* rtl-ssa/member-fns.inl: Make num_accesses unsigned int.

These devices see a 32 KiB block of their program memory (flash) in
the RAM address space.  This can be used to support .rodata in flash
provided Binutils support PR31124 (Add new emulations which locate
.rodata in flash).  This patch does the following:

* configure checks availability of Binutils PR31124.

* Add new command line options -mrodata-in-ram and -mflmap.
While -flmap is for internal usage (communicate hardware properties
from device-specs to the compiler proper), -mrodata-in-ram is a user
space option that allows to return to the current rodata-in-ram layout.

* Adjust gen-avr-mmcu-specs.cc so that device-specs are generated
that sanity check options, and that translate -m[no-]rodata-in-ram
to its emulation.

* Objects in .rodata don't drag __do_copy_data.

* Document new options and built-in macros.

	PR target/112944

gcc/
	* configure.ac [target=avr]: Check availability of emulations
	avrxmega2_flmap and avrxmega4_flmap, resulting in new config vars
	HAVE_LD_AVR_AVRXMEGA2_FLMAP and HAVE_LD_AVR_AVRXMEGA4_FLMAP.
	* configure: Regenerate.
	* config.in: Regenerate.
	* doc/invoke.texi (AVR Options): Document -mflmap, -mrodata-in-ram,
	__AVR_HAVE_FLMAP__, __AVR_RODATA_IN_RAM__.

	* config/avr/avr.opt (-mflmap, -mrodata-in-ram): New options.
	* config/avr/avr-arch.h (enum avr_device_specific_features):
	Add AVR_ISA_FLMAP.
	* config/avr/avr-mcus.def (AVR_MCU) [avr64*, avr128*]: Set isa flag
	AVR_ISA_FLMAP.
	* config/avr/avr.cc (avr_arch_index, avr_has_rodata_p): New vars.
	(avr_set_core_architecture): Set avr_arch_index.
	(have_avrxmega2_flmap, have_avrxmega4_flmap)
	(have_avrxmega3_rodata_in_flash): Set new static const bool according
	to configure results.
	(avr_rodata_in_flash_p): New function using them.
	(avr_asm_init_sections): Let readonly_data_section->unnamed.callback
	track avr_need_copy_data_p only if not avr_rodata_in_flash_p().
	(avr_asm_named_section): Track avr_has_rodata_p.
	(avr_file_end): Emit __do_copy_data also when avr_has_rodata_p
	and not avr_rodata_in_flash_p ().
	* config/avr/specs.h (CC1_SPEC): Add %(cc1_rodata_in_ram).
	(LINK_SPEC): Add %(link_rodata_in_ram).
	(LINK_ARCH_SPEC): Remove.
	* config/avr/gen-avr-mmcu-specs.cc (have_avrxmega3_rodata_in_flash)
	(have_avrxmega2_flmap, have_avrxmega4_flmap): Set new static
	const bool according to configure results.
	(diagnose_mrodata_in_ram): New function.
	(print_mcu): Generate specs with the following changes:
	<*cc1_misc, *asm_misc, *link_misc>: New specs so that we don't
	need to extend avr/specs.h each time we add a new bell or whistle.
	<*cc1_rodata_in_ram, *link_rodata_in_ram>: New specs to diagnose
	-m[no-]rodata-in-ram.
	<*cpp_rodata_in_ram>: New. Does -D__AVR_RODATA_IN_RAM__=0/1.
	<*cpp_mcu>: Add -D__AVR_AVR_FLMAP__ if it applies.
	<*cpp>: Add %(cpp_rodata_in_ram).
	<*link_arch>: Use emulation avrxmega2_flmap, avrxmega4_flmap as
	requested.
	<*self_spec>: Add -mflmap or %<mflmap as needed.

gcc/testsuite/
	* gcc.target/avr/torture/pr112944-flmap-0.c: New test.
	* gcc.target/avr/torture/pr112944-flmap-1.c: New test.

Check whether the assembler supports tls le relax. If it supports it, the assembly
instruction sequence of tls le relax will be generated by default.

The original way to obtain the tls le symbol address:
    lu12i.w $rd, %le_hi20(sym)
    ori $rd, $rd, %le_lo12(sym)
    add.{w/d} $rd, $rd, $tp

If the assembler supports tls le relax, the following sequence is generated:

    lu12i.w $rd, %le_hi20_r(sym)
    add.{w/d} $rd,$rd,$tp,%le_add_r(sym)
    addi.{w/d} $rd,$rd,%le_lo12_r(sym)

gcc/ChangeLog:

	* config.in: Regenerate.
	* config/loongarch/loongarch-opts.h (HAVE_AS_TLS_LE_RELAXATION): Define.
	* config/loongarch/loongarch.cc (loongarch_legitimize_tls_address):
	Added TLS Le Relax support.
	(loongarch_print_operand_reloc): Add the output string of TLS Le Relax.
	* config/loongarch/loongarch.md (@add_tls_le_relax<mode>): New template.
	* configure: Regenerate.
	* configure.ac: Check if binutils supports TLS le relax.

gcc/testsuite/ChangeLog:

	* lib/target-supports.exp: Add a function to check whether binutil supports
	TLS Le Relax.
	* gcc.target/loongarch/tls-le-relax.c: New test.

Our system.h and configure.ac try to accommodate valgrind-3.1, but it is
more than 15 years old at this point. As Valgrind-based checking is a
developer-oriented feature, drop the compatibility stuff and streamline
the detection.

gcc/ChangeLog:

	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Delete manual checks for old Valgrind headers.
	* system.h (VALGRIND_MAKE_MEM_NOACCESS): Delete.
	(VALGRIND_MAKE_MEM_DEFINED): Delete.
	(VALGRIND_MAKE_MEM_UNDEFINED): Delete.
	(VALGRIND_MALLOCLIKE_BLOCK): Delete.
	(VALGRIND_FREELIKE_BLOCK): Delete.

In <https://gcc.gnu.org/pipermail/gcc-patches/2023-August/628748.html>
I proposed -fhardened, a new umbrella option that enables a reasonable set
of hardening flags.  The read of the room seems to be that the option
would be useful.  So here's a patch implementing that option.

Currently, -fhardened enables:

  -D_FORTIFY_SOURCE=3 (or =2 for older glibcs)
  -D_GLIBCXX_ASSERTIONS
  -ftrivial-auto-var-init=zero
  -fPIE  -pie  -Wl,-z,relro,-z,now
  -fstack-protector-strong
  -fstack-clash-protection
  -fcf-protection=full (x86 GNU/Linux only)

-fhardened will not override options that were specified on the command line
(before or after -fhardened).  For example,

     -D_FORTIFY_SOURCE=1 -fhardened

means that _FORTIFY_SOURCE=1 will be used.  Similarly,

      -fhardened -fstack-protector

will not enable -fstack-protector-strong.

Currently, -fhardened is only supported on GNU/Linux.

In DW_AT_producer it is reflected only as -fhardened; it doesn't expand
to anything.  This patch provides -Whardened, enabled by default, which
warns when -fhardened couldn't enable a particular option.  I think most
often it will say that _FORTIFY_SOURCE wasn't enabled because optimization
were not enabled.

gcc/c-family/ChangeLog:

	* c-opts.cc: Include "target.h".
	(c_finish_options): Maybe cpp_define _FORTIFY_SOURCE
	and _GLIBCXX_ASSERTIONS.

gcc/ChangeLog:

	* common.opt (Whardened, fhardened): New options.
	* config.in: Regenerate.
	* config/bpf/bpf.cc: Include "opts.h".
	(bpf_option_override): If flag_stack_protector_set_by_fhardened_p, do
	not inform that -fstack-protector does not work.
	* config/i386/i386-options.cc (ix86_option_override_internal): When
	-fhardened, maybe enable -fcf-protection=full.
	* config/linux-protos.h (linux_fortify_source_default_level): Declare.
	* config/linux.cc (linux_fortify_source_default_level): New.
	* config/linux.h (TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL): Redefine.
	* configure: Regenerate.
	* configure.ac: Check if the linker supports '-z now' and '-z relro'.
	Check if -fhardened is supported on $target_os.
	* doc/invoke.texi: Document -fhardened and -Whardened.
	* doc/tm.texi: Regenerate.
	* doc/tm.texi.in (TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL): Add.
	* gcc.cc (driver_handle_option): Remember if any link options or -static
	were specified on the command line.
	(process_command): When -fhardened, maybe enable -pie and
	-Wl,-z,relro,-z,now.
	* opts.cc (flag_stack_protector_set_by_fhardened_p): New global.
	(finish_options): When -fhardened, enable
	-ftrivial-auto-var-init=zero and -fstack-protector-strong.
	(print_help_hardened): New.
	(print_help): Call it.
	* opts.h (flag_stack_protector_set_by_fhardened_p): Declare.
	* target.def (fortify_source_default_level): New target hook.
	* targhooks.cc (default_fortify_source_default_level): New.
	* targhooks.h (default_fortify_source_default_level): Declare.
	* toplev.cc (process_options): When -fhardened, enable
	-fstack-clash-protection.  If flag_stack_protector_set_by_fhardened_p,
	do not warn that -fstack-protector not supported for this target.
	Don't enable -fhardened when !HAVE_FHARDENED_SUPPORT.

gcc/testsuite/ChangeLog:

	* gcc.misc-tests/help.exp: Test -fhardened.
	* c-c++-common/fhardened-1.S: New test.
	* c-c++-common/fhardened-1.c: New test.
	* c-c++-common/fhardened-10.c: New test.
	* c-c++-common/fhardened-11.c: New test.
	* c-c++-common/fhardened-12.c: New test.
	* c-c++-common/fhardened-13.c: New test.
	* c-c++-common/fhardened-14.c: New test.
	* c-c++-common/fhardened-15.c: New test.
	* c-c++-common/fhardened-2.c: New test.
	* c-c++-common/fhardened-3.c: New test.
	* c-c++-common/fhardened-4.c: New test.
	* c-c++-common/fhardened-5.c: New test.
	* c-c++-common/fhardened-6.c: New test.
	* c-c++-common/fhardened-7.c: New test.
	* c-c++-common/fhardened-8.c: New test.
	* c-c++-common/fhardened-9.c: New test.
	* gcc.target/i386/cf_check-6.c: New test.

Make the utf8 manifest optional (on by default and
explicitly off with --disable-win32-utf8-manifest)
in the mingw hosts.

Also eliminate duplication between the 32-bit and
64-bit mingw hosts by putting them both in the
same branch and special-case only the 64-bit long
long setting.

PR mingw/111170
PR mingw/108865

Signed-off-by: Costas Argyris <costas.argyris@gmail.com>
Signed-off-by: Jonathan Yong <10walls@gmail.com>

gcc/Changelog:

	* configure.ac: Handle new --enable-win32-utf8-manifest
	option.
	* config.host: allow win32 utf8 manifest to be disabled
	by user.
	* configure: Regenerate.

When compiling with '-mcmodel=medium', the function call is made through
'pcaddu18i+jirl' if binutils supports call36, otherwise the
native implementation 'pcalau12i+jirl' is used.

gcc/ChangeLog:

	* config.in: Regenerate.
	* config/loongarch/loongarch-opts.h (HAVE_AS_SUPPORT_CALL36): Define macro.
	* config/loongarch/loongarch.cc (loongarch_legitimize_call_address):
	If binutils supports call36, the function call is not split over expand.
	* config/loongarch/loongarch.md: Add call36 generation code.
	* config/loongarch/predicates.md: Likewise.
	* configure: Regenerate.
	* configure.ac: Check whether binutils supports call36.

gcc/testsuite/ChangeLog:

	* gcc.target/loongarch/func-call-medium-5.c: If the assembler supports call36,
	the test is abandoned.
	* gcc.target/loongarch/func-call-medium-6.c: Likewise.
	* gcc.target/loongarch/func-call-medium-7.c: Likewise.
	* gcc.target/loongarch/func-call-medium-8.c: Likewise.
	* lib/target-supports.exp: Added a function to see if the assembler supports
	the call36 relocation.
	* gcc.target/loongarch/func-call-medium-call36-1.c: New test.
	* gcc.target/loongarch/func-call-medium-call36.c: New test.

Co-authored-by: Xi Ruoyao <xry111@xry111.site>

LoongArch: Disable relaxation if the assembler don't support conditional branch relaxation [PR112330]

As the commit message of r14-4674 has indicated, if the assembler does
not support conditional branch relaxation, a relocation overflow may
happen on conditional branches when relaxation is enabled because the
number of NOP instructions inserted by the assembler will be more than
the number estimated by GCC.

To work around this issue, disable relaxation by default if the
assembler is detected incapable to perform conditional branch relaxation
at GCC build time.  We also need to pass -mno-relax to the assembler to
really disable relaxation.  But, if the assembler does not support
-mrelax option at all, we should not pass -mno-relax to the assembler or
it will immediately error out.  Also handle this with the build time
assembler capability probing, and add a pair of options
-m[no-]pass-mrelax-to-as to allow using a different assembler from the
build-time one.

With this change, if GCC is built with GAS 2.41, relaxation will be
disabled by default.  So the default value of -mexplicit-relocs= is also
changed to 'always' if -mno-relax is specified or implied by the
build-time default, because using assembler macros for symbol addresses
produces no benefit when relaxation is disabled.

gcc/ChangeLog:

	PR target/112330
	* config/loongarch/genopts/loongarch.opt.in: Add
	-m[no]-pass-relax-to-as.  Change the default of -m[no]-relax to
	account conditional branch relaxation support status.
	* config/loongarch/loongarch.opt: Regenerate.
	* configure.ac (gcc_cv_as_loongarch_cond_branch_relax): Check if
	the assembler supports conditional branch relaxation.
	* configure: Regenerate.
	* config.in: Regenerate.  Note that there are some unrelated
	changes introduced by r14-5424 (which does not contain a
	config.in regeneration).
	* config/loongarch/loongarch-opts.h
	(HAVE_AS_COND_BRANCH_RELAXATION): Define to 0 if not defined.
	* config/loongarch/loongarch-driver.h (ASM_MRELAX_DEFAULT):
	Define.
	(ASM_MRELAX_SPEC): Define.
	(ASM_SPEC): Use ASM_MRELAX_SPEC instead of "%{mno-relax}".
	* config/loongarch/loongarch.cc: Take the setting of
	-m[no-]relax into account when determining the default of
	-mexplicit-relocs=.
	* doc/invoke.texi: Document -m[no-]relax and
	-m[no-]pass-mrelax-to-as for LoongArch.  Update the default
	value of -mexplicit-relocs=.