Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.
Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.
The changes we applied mechanically with a script, except to
licenses/README.md.
Closes#9937
The radix tree code will need the code to find 8-bit value
in an array of some fixed size, so here are the helpers.
Those that allow for SIMD implementations are such for x86_64
TODO: Add aarch64
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Clang has a bug processing inline ifuncs with intrinsics[1].
Since ifuncs can't be inlined anyway (they are always dispatched
via a function pointer that is determined based on the CPU
features present), nothing is gained by inlining them. Deinlining
therefore reduces compile time and works around the clang bug.
[1] https://bugs.llvm.org/show_bug.cgi?id=47691Closes#7358
