bjoernager/rust
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rustc_query_system: explicitly register reused dep nodes

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Register nodes that we've reused from the previous session explicitly
with `OnDiskCache`. Previously, we relied on this happening as a side
effect of accessing the nodes in the `PreviousDepGraph`. For the sake of
performance and avoiding unintended side effects, register explictily.
This commit is contained in:
Tyson Nottingham 2020-12-18 16:00:52 -08:00
parent eb4fc71dc9
commit 7795801902
6 changed files with 51 additions and 62 deletions
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3
compiler/rustc_query_system/src/dep_graph/mod.rs
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@ -15,7 +15,6 @@ use rustc_data_structures::profiling::SelfProfilerRef;
use rustc_data_structures::sync::Lock;
use rustc_data_structures::thin_vec::ThinVec;
use rustc_errors::Diagnostic;
use rustc_span::def_id::DefPathHash;
use std::fmt;
use std::hash::Hash;
@ -33,7 +32,7 @@ pub trait DepContext: Copy {
/// Try to force a dep node to execute and see if it's green.
fn try_force_from_dep_node(&self, dep_node: &DepNode<Self::DepKind>) -> bool;
fn register_reused_dep_path_hash(&self, hash: DefPathHash);
fn register_reused_dep_node(&self, dep_node: &DepNode<Self::DepKind>);
/// Return whether the current session is tainted by errors.
fn has_errors_or_delayed_span_bugs(&self) -> bool;