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Merge the two loops in internalize_symbols.

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Because they have a lot of overlap.
This commit is contained in:
Nicholas Nethercote 2023-06-05 16:05:48 +10:00
parent 392045b7e7
commit fe3b646565
1 changed files with 18 additions and 29 deletions
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47
compiler/rustc_monomorphize/src/partitioning.rs
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@ -486,21 +486,7 @@ fn internalize_symbols<'tcx>(
mono_item_placements: FxHashMap<MonoItem<'tcx>, MonoItemPlacement>, mono_item_placements: FxHashMap<MonoItem<'tcx>, MonoItemPlacement>,
internalization_candidates: FxHashSet<MonoItem<'tcx>>, internalization_candidates: FxHashSet<MonoItem<'tcx>>,
) { ) {
if codegen_units.len() == 1 { let single_codegen_unit = codegen_units.len() == 1;
// Fast path for when there is only one codegen unit. In this case we
// can internalize all candidates, since there is nowhere else they
// could be used from.
for cgu in codegen_units {
for (item, linkage_and_visibility) in cgu.items_mut() {
if !internalization_candidates.contains(item) {
// This item is no candidate for internalizing, so skip it.
continue;
}
*linkage_and_visibility = (Linkage::Internal, Visibility::Default);
}
}
return;
}
// For each internalization candidates in each codegen unit, check if it is // For each internalization candidates in each codegen unit, check if it is
// used from outside its defining codegen unit. // used from outside its defining codegen unit.
@ -512,21 +498,24 @@ fn internalize_symbols<'tcx>(
// This item is no candidate for internalizing, so skip it. // This item is no candidate for internalizing, so skip it.
continue; continue;
} }
debug_assert_eq!(mono_item_placements[item], home_cgu);
if let Some(user_items) = cx.usage_map.get_user_items(*item) { if !single_codegen_unit {
if user_items debug_assert_eq!(mono_item_placements[item], home_cgu);
.iter()
.filter_map(|user_item| { if let Some(user_items) = cx.usage_map.get_user_items(*item) {
// Some user mono items might not have been if user_items
// instantiated. We can safely ignore those. .iter()
mono_item_placements.get(user_item) .filter_map(|user_item| {
}) // Some user mono items might not have been
.any(|placement| *placement != home_cgu) // instantiated. We can safely ignore those.
{ mono_item_placements.get(user_item)
// Found a user from another CGU, so skip to the next item })
// without marking this one as internal. .any(|placement| *placement != home_cgu)
continue; {
// Found a user from another CGU, so skip to the next item
// without marking this one as internal.
continue;
}
} }
} }