Auto merge of #79994 - JohnTitor:rollup-43wl2uj, r=JohnTitor

Rollup of 12 pull requests

Successful merges:

 - #79360 (std::iter: document iteration over `&T` and `&mut T`)
 - #79398 (Link loop/for keyword)
 - #79834 (Remove deprecated linked_list_extras methods.)
 - #79845 (Fix rustup support in default_build_triple for python3)
 - #79940 (fix more clippy::complexity findings)
 - #79942 (Add post-init hook for static memory for miri.)
 - #79954 (Fix building compiler docs with stage 0)
 - #79963 (Fix typo in `DebruijnIndex` documentation)
 - #79970 (Misc rustbuild improvements when the LLVM backend isn't used)
 - #79973 (rustdoc light theme: Fix CSS for selected buttons)
 - #79984 (Remove an unused dependency that made `rustdoc` crash)
 - #79985 (Fixes submit event of the search input)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs
index ec557b7a682..bf0d499e6c4 100644
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -854,8 +854,8 @@ fn generic_simd_intrinsic(
         ));
     }
 
-    if name_str.starts_with("simd_shuffle") {
-        let n: u64 = name_str["simd_shuffle".len()..].parse().unwrap_or_else(|_| {
+    if let Some(stripped) = name_str.strip_prefix("simd_shuffle") {
+        let n: u64 = stripped.parse().unwrap_or_else(|_| {
             span_bug!(span, "bad `simd_shuffle` instruction only caught in codegen?")
         });