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Merge commit '728bc27f32' into sync_cg_clif-2025-01-20

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bjorn3 2025-01-20 15:30:04 +00:00
commit d740a3f06a
3 changed files with 12 additions and 5 deletions
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10
compiler/rustc_codegen_cranelift/src/driver/aot.rs
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@ -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)
}