Rollup of 3 pull requests - #151597

Closed

JonathanBrouwer wants to merge 9 commits into

rust-lang:mainfrom

JonathanBrouwer:rollup-AjKzSdl

Commits on Jan 19, 2026

add `simd_splat` intrinsic
folkertdev
committed
80c0b99
`simd_splat`: custom error in gcc backend for invalid element type
folkertdev
committed
120388c
rustc-dev-guide: Mention `--extern` modifiers for `aux-crate` directive
Enselic
committed
9aaa581

Commits on Jan 24, 2026

Fix cstring-merging test for Hexagon target
androm3da
committed
e558544
const-eval: do not call `immediate_const_vector` on vector of pointers
folkertdev
committed
71f3442
compiletest: Make `aux-crate` directive explicitly handle `--extern` modifiers
Enselic
committed
fde37c3
Rollup merge of #151346 - folkertdev:simd-splat, r=workingjubilee
JonathanBrouwer
authored
8f6eb9e
Rollup merge of #151353 - Enselic:aux-crate-opts, r=Zalathar
JonathanBrouwer
authored
c497e48
Rollup merge of #151571 - androm3da:bcain/cstr_merge, r=tgross35
JonathanBrouwer
authored
ff2702c