merge GCC 12.4.0.

initial merge of GCC 12.3.0.

this doesn't include any of the changes to the .c -> .cc files renamed,
and reverts our local changes to the vax port and libsanitizer subdir.
vax GCC was rewritten and

initial merge of GCC 12.3.0.

this doesn't include any of the changes to the .c -> .cc files renamed,
and reverts our local changes to the vax port and libsanitizer subdir.
vax GCC was rewritten and our local fixes no longer are relevant, and
the new libsanitizer is more updated than our old one, and merging via
gcc10->gcc12 is not really possible.

unfortunately, our local changes to libsanitizer that aren't related
to the general update of those sources (ie, the netbsd code) will need
to be re-checked and perhaps re-ported.

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merge GCC 10.4.0.

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_po

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

our current GCC 9 sanitizers are newer than GCC 10's still, so that
may take a little to untease, so it's probable that more than
these 2 will need more changes.

rs6000.c has some changes related to ABI and supported functionality
that need to be merged forward.

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merge GCC 9.3.0.

merge GCC 8.4.0.

merge GCC 8.3.0 pass 1. will not compile yet. thare are still
about 25 files with merge issues.

first pass at merging GCC 7.4.0. unlikely to compile..

merge GCC 6.5. needs mknative as some new files appeared.

merge GCC 6.4.0. sanitizer stuff is probably busted, but most
other changes merged easily.

docs need to be regenerated with modern versions still.

Detect advance_loc support with readelf, not objdump. The latter is
broken in some situations before binutils 2.28.

enable checks for no dot syms on netbsd ppc64, fixes build issues
in libutil where the opd() function conflicts with the .opd section.

remove a couple of tainted defines that are handled differently

enable checks for no dot syms on netbsd ppc64, fixes build issues
in libutil where the opd() function conflicts with the .opd section.

remove a couple of tainted defines that are handled differently now.

this, with mknative-gcc as well, enables ppc64 world to build again.

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merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

Update RISCV tls assembly tests

merge GCC 4.8.4.

Add RISC-V support.

Resolve conflicts

Set ac_install_sh="$SHELL $ac_aux_dir/$ac_t -c"
instead of ac_install_sh="$ac_aux_dir/$ac_t -c"
in all configure scripts in the gcc/dist tree.
This ensures that the install-sh script is always run
un

Set ac_install_sh="$SHELL $ac_aux_dir/$ac_t -c"
instead of ac_install_sh="$ac_aux_dir/$ac_t -c"
in all configure scripts in the gcc/dist tree.
This ensures that the install-sh script is always run
under the correct shell.

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merge GCC r208254.

merge gcc 4.8.2 r206687 (part 2).

Configury changes to match tuple of m5407--netbsdelf as a variant of
m68k--netbself but with a coldfire cpu (m5475). Fix m68010 to actually
properly default to m68010.

Resolve conflicts.

pull across these revisions from gcc 4.1:

configure:
revision 1.12
date: 2011/03/10 15:14:49; author: skrll; state: Exp; lines: +1 -1
Look for TLS on hppa on netbsd.

configure.ac:
revision 1.11

pull across these revisions from gcc 4.1:

configure:
revision 1.12
date: 2011/03/10 15:14:49; author: skrll; state: Exp; lines: +1 -1
Look for TLS on hppa on netbsd.

configure.ac:
revision 1.11
date: 2011/03/10 15:14:49; author: skrll; state: Exp; lines: +1 -1
Look for TLS on hppa on netbsd.

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merge forward our changes into the GCC 4.5.3 tree. mostly from chuq.