bjoernager/rust
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Auto merge of #93511 - cjgillot:query-copy, r=oli-obk

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Ensure that queries only return Copy types.

This should pervent the perf footgun of returning a result with an expensive `Clone` impl (like a `Vec` of a hash map).

I went for the stupid solution of allocating on an arena everything that was not `Copy`. Some query results could be made Copy easily, but I did not really investigate.
This commit is contained in:
bors 2022-02-10 09:37:07 +00:00
commit 56cd04af5c
27 changed files with 208 additions and 182 deletions
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6
compiler/rustc_interface/src/passes.rs
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@ -658,13 +658,13 @@ fn write_out_deps(
boxed_resolver.borrow_mut().access(|resolver| {
for cnum in resolver.cstore().crates_untracked() {
let source = resolver.cstore().crate_source_untracked(cnum);
if let Some((path, _)) = source.dylib {
if let Some((path, _)) = &source.dylib {
files.push(escape_dep_filename(&path.display().to_string()));
}
if let Some((path, _)) = source.rlib {
if let Some((path, _)) = &source.rlib {
files.push(escape_dep_filename(&path.display().to_string()));
}
if let Some((path, _)) = source.rmeta {
if let Some((path, _)) = &source.rmeta {
files.push(escape_dep_filename(&path.display().to_string()));
}
}