This might have made sense if the algorithm could use `searchWords`
to skip having to look at `searchIndex`, but since it always
does a substring check on both the stock word and the normalizedName,
it doesn't seem to help performance anyway.

…=b-naber

Add test for Apple's `-weak_framework` linker argument

The [`-weak_framework`](https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html) linker argument can sometimes be useful to reduce startup times, and to link newer frameworks while still having older deployment targets.

So I made a test to ensure that it continues to work.

Discussed in rust-lang#99427.

Remove dead codes in rustc_codegen_gcc

Detected by rust-lang#118257

…=GuillaumeGomez

rustdoc-search: remove parallel searchWords array

This might have made sense if the algorithm could use `searchWords` to skip having to look at `searchIndex`, but since it always does a substring check on both the stock word and the normalizedName, it doesn't seem to help performance anyway.

Profile: http://notriddle.com/rustdoc-html-demo-8/searchwords/index.html