Linux still doesn't actually implement IBT for userland. And by the pace
things are going, it will take another decade before it does. But OpenBSD
has it enabled *by default* already.

Drop the #if

Linux still doesn't actually implement IBT for userland. And by the pace
things are going, it will take another decade before it does. But OpenBSD
has it enabled *by default* already.

Drop the #ifdef __linux__. This should hurt other OSes when they finally
catch up with us.

ok robert@, tb@

show more ...

merge llvm libunwind 16.0.6

Merge LLVM 13.0.0.

Merge libc++, libc++abi and libunwind version 11.1.0.

Re-apply our libunwind 8.0.0 patches to libunwind 11.0.0. Patches to the
PPC ASM had to be re-applied manually due to whitespace changes upstream,
other merge conflicts were harmless.

"Looks good"

Re-apply our libunwind 8.0.0 patches to libunwind 11.0.0. Patches to the
PPC ASM had to be re-applied manually due to whitespace changes upstream,
other merge conflicts were harmless.

"Looks good" kettenis@

show more ...

Import libunwind 11.0.0 in new LLVM directory, thus not yet linked to
build.

Encouraged by kettenis@