CVS log for src/external/gpl3/gcc/Attic/README.gcc10

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Default branch: MAIN

update for GCC 12.

amd64 tools already work.  everything else is unknown.

note sh3 switched.

switch m68000, m68k and 32 bit arm to GCC 10.  just sh3 left!

special thanks to rin for fixing arm32.

Update earmv[67]{,hf}{,eb}: hazard has gone, just working fine!

Note that kernel texts for soft-float variants are just same as that for
hard-float counterparts.

sync with head

switch mips* and i386 to GCC 10.

arm32 (significant issues remaining), m68k (seems fine, but x68k
needs to reduce support in loadbsd), and sh3 remaining.

Update as(1) failure on armv6; it occurs also for earmv6hfeb, whereas it
does not for earmv6{,eb}.

armv6 little endian has problems with GCC 10.

rpi# cat bar.s
        .cfi_startproc
        .cfi_endproc
rpi# as bar.s
bar.s: Assembler messages:
bar.s: Internal error (Illegal instruction).
Please report this bug.

switch powerpc and arm64 to GCC 10.

cc1objplus and lto-dump are now enabled.

arm64eb works.

arm64* now works.  (thanks skrll.)
evbarmv5 and evbarmv7hfeb works.  (thanks martin.)

hppa switched.  sh3el seems ready.  m68k atf wasn't fail..

arm64-gcc10 can run atf fine (with a GCC 9 kernel.)

it's spelled aarch64eb.  now aarch64eb userland builds, too.
update arm64 status (kernels still need new libkern help.)

switch alpha, ia64, sparc*, riscv*, amd64 and vax to GCC 10 default.

various updates, thanks to those who provided feedback.

- powerpc ports work
- m68k ports work, x68k has a new caveat
- hppa works
- mips64eb vs UVMHIST has been fix
- i386 reboot problem fixed (cardbus issue, not GCC related)

feedback from rin@: alpha and m68k work well, powerpc not so much
but fixes are known.

thanks!

i've test-built all platforms.  everything except arm64, x68k and sun2
builds.  many of them work as well.  most mips are (minimally) tested.

dtrace systrace.c issue fixed by christos (thanks!)

mips issue is related to memset.c miscompiling and does not
appear with -ffreestanding (thanks joerg & simonb.)

note amd64 dtrace issue is only warning for now.
note that i386 has problems in -current.

with dtrace enabled, there is at least one remaining issue for amd64.

sparc and amd64 successfully finished their atf runs.

update the status of GCC.  summary:  mostly looking good.

- all targets build or can be attempted
- arm64 needs __aarch64_swp1_acq in both libgcc and libkern
- earmv4 works, earmv7hf works, all arm32 builds, rest untested
- hppa, most/all m68k, alpha, and most ppc builds, none tested
- ia64 kernel runs as well as before, userland fails to build
- i386 runs, seems mostly fine except lib/libc/sys/t_ptrace_wait
  resume test is hung, and cpu-spinning in a zombie
- sun2 grew again, too large but builds besides RAMDISK not fitting
- mips seems problematic.  some kernels fail some work, userland
  has problems with both static and dynamic n32 and n64 programs
- sh3el seems ok in gxemul/landisk, sh3eb not tested
- vax seems OK in simh (same c++ exception issues)

all ports kernels have been tested to build (though perhaps with
some uncommited changes only needed for some, while most changes
are commited, about 15 are not but many ports build without them.)

updates:
- arm64 doesn't build (missing __aarch64_swp1_acq in kernels)
- mips cpu targets all build (maybe not all ports)
- powerpc builds (maybe not all ports)

various changes to get GCC 10 to build here.

- fix path to compiler-specific includes
- missing (void) for (older) C
- fix __is_signed/__is_signed_val change
- avoid compiler warning-as-errors
- add to existing COPTS.file values, instead of setting
- bump libgomp minor; functions were added
- add new 'compare' c++ header
- handle new analyzer subdirectory.  set TARGET_MACHINE for lto-streamer-in.c.
  remove params.list etc handling.
- coroutines.cc is another .cc not .c.  adjust .PATH to suit.
- add new lto1 sources
- couple of files not in /arch/ subdirs missed in mknative update.

rs6000.c is still not merged.