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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4
compiler/rustc_codegen_ssa/src/back/write.rs
View file

@ -477,7 +477,7 @@ pub fn start_async_codegen<B: ExtraBackendMethods>(
codegen_worker_receive,
shared_emitter_main,
future: coordinator_thread,
output_filenames: tcx.output_filenames(()),
output_filenames: tcx.output_filenames(()).clone(),
}
}
@ -1050,7 +1050,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
cgu_reuse_tracker: sess.cgu_reuse_tracker.clone(),
coordinator_send,
diag_emitter: shared_emitter.clone(),
output_filenames: tcx.output_filenames(()),
output_filenames: tcx.output_filenames(()).clone(),
regular_module_config: regular_config,
metadata_module_config: metadata_config,
allocator_module_config: allocator_config,

4
compiler/rustc_codegen_ssa/src/base.rs
View file

@ -843,7 +843,7 @@ impl CrateInfo {
used_crate_source: Default::default(),
lang_item_to_crate: Default::default(),
missing_lang_items: Default::default(),
dependency_formats: tcx.dependency_formats(()),
dependency_formats: tcx.dependency_formats(()).clone(),
windows_subsystem,
};
let lang_items = tcx.lang_items();
@ -860,7 +860,7 @@ impl CrateInfo {
info.native_libraries
.insert(cnum, tcx.native_libraries(cnum).iter().map(Into::into).collect());
info.crate_name.insert(cnum, tcx.crate_name(cnum).to_string());
info.used_crate_source.insert(cnum, tcx.used_crate_source(cnum));
info.used_crate_source.insert(cnum, tcx.used_crate_source(cnum).clone());
if tcx.is_compiler_builtins(cnum) {
info.compiler_builtins = Some(cnum);
}