Auto merge of #135789 - matthiaskrgr:rollup-4cvw8s4, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #133695 (Reexport likely/unlikely in std::hint)
 - #135330 (Respect --sysroot for rustc -vV and -Cpasses=list)
 - #135333 (Partial progress on #132735: Replace extern "rust-intrinsic" with #[rustc_intrinsic] across the codebase)
 - #135741 (Recognise new IPv6 documentation range from IETF RFC 9637)
 - #135770 (Update contributing docs for submodule/subtree changes)
 - #135775 (Subtree update of `rust-analyzer`)
 - #135776 (Subtree sync for rustc_codegen_cranelift)

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

4 files changed, 13 insertions, 5 deletions

diff --git a/compiler/rustc_codegen_cranelift/rust-toolchain b/compiler/rustc_codegen_cranelift/rust-toolchain
index e4c3dd708fd..9c6aad3490d 100644
--- a/compiler/rustc_codegen_cranelift/rust-toolchain
+++ b/compiler/rustc_codegen_cranelift/rust-toolchain
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "nightly-2025-01-10"
+channel = "nightly-2025-01-20"
 components = ["rust-src", "rustc-dev", "llvm-tools"]
 profile = "minimal"
diff --git a/compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh b/compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh
index e569da90cf7..41aa011e805 100755
--- a/compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh
+++ b/compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh
@@ -176,12 +176,11 @@ diff --git a/src/tools/run-make-support/src/rustdoc.rs b/src/tools/run-make-supp
 index 9607ff02f96..b7d97caf9a2 100644
 --- a/src/tools/run-make-support/src/external_deps/rustdoc.rs
 +++ b/src/tools/run-make-support/src/external_deps/rustdoc.rs
-@@ -34,8 +34,6 @@ pub fn bare() -> Self {
+@@ -34,7 +34,6 @@ pub fn bare() -> Self {
      #[track_caller]
      pub fn new() -> Self {
          let mut cmd = setup_common();
--        let target_rpath_dir = env_var_os("TARGET_RPATH_DIR");
--        cmd.arg(format!("-L{}", target_rpath_dir.to_string_lossy()));
+-        cmd.arg("-L").arg(env_var_os("TARGET_RPATH_DIR"));
          Self { cmd }
      }
 
diff --git a/compiler/rustc_codegen_cranelift/src/driver/aot.rs b/compiler/rustc_codegen_cranelift/src/driver/aot.rs
index fe578e44770..7d5592daac1 100644
--- a/compiler/rustc_codegen_cranelift/src/driver/aot.rs
+++ b/compiler/rustc_codegen_cranelift/src/driver/aot.rs
@@ -333,9 +333,17 @@ fn make_module(sess: &Session, name: String) -> UnwindModule<ObjectModule> {
 
     let mut builder =
         ObjectBuilder::new(isa, name + ".o", cranelift_module::default_libcall_names()).unwrap();
+
+    // Disable function sections by default on MSVC as it causes significant slowdowns with link.exe.
+    // Maybe link.exe has exponential behavior when there are many sections with the same name? Also
+    // explicitly disable it on MinGW as rustc already disables it by default on MinGW and as such
+    // isn't tested. If rustc enables it in the future on MinGW, we can re-enable it too once it has
+    // been on MinGW.
+    let default_function_sections = sess.target.function_sections && !sess.target.is_like_windows;
     builder.per_function_section(
-        sess.opts.unstable_opts.function_sections.unwrap_or(sess.target.function_sections),
+        sess.opts.unstable_opts.function_sections.unwrap_or(default_function_sections),
     );
+
     UnwindModule::new(ObjectModule::new(builder), true)
 }
 
diff --git a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
index 2e5813556aa..26f14532b45 100644
--- a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
+++ b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
@@ -1,4 +1,5 @@
 //! Codegen of intrinsics. This includes `extern "rust-intrinsic"`,
+//! functions marked with the `#[rustc_intrinsic]` attribute
 //! and LLVM intrinsics that have symbol names starting with `llvm.`.
 
 macro_rules! intrinsic_args {