30b3f35c42
Upgrade to LLVM 14 LLVM patch state: * [x]a55727f334
Backported. * [x]c3c82dc124
Backported as917c47b3bf
. * [x]6e8f9ab632
No plan to upstream. * [x]319f4b2d52
Backported. * [x]8b2c25d321
No plan to upstream. * [x]75fef2efd4
No plan to upstream. * [ ]adef757547
Upstreamed as2d2ef384b2
. Needs backport. * [x]4b7c1b4910
No plan to upstream. * [x]3f5ab0c061
No plan to upstream. * [x]514d05500e
No plan to upstream. * [ ]54c5869585
Under review at https://reviews.llvm.org/D119695 and https://reviews.llvm.org/D119856. Release timeline: * LLVM 14.0.0 final planned for Mar 15. * Rust 1.60.0 planned for Apr 7. Compile-time: * https://perf.rust-lang.org/compare.html?start=250384edc5d78533e993f38c60d64e42b21684b2&end=b87df8d2c7c5d9ac448c585de10927ab2ee1b864 * A slight improvement on average, though no big changes either way. * There are some larger max-rss improvements. r? `@ghost`