Add a -Z time option which prints only passes which runs once

[rust.git] / src / librustc / ty / query / on_disk_cache.rs

diff --git a/src/librustc/ty/query/on_disk_cache.rs b/src/librustc/ty/query/on_disk_cache.rs
index 9c9bc0f6aa11c1cd788b3b2d805ea9af6d32efc8..aaadbf289356811091d4ff393b53f845a562fd44 100644 (file)
--- a/src/librustc/ty/query/on_disk_cache.rs
+++ b/src/librustc/ty/query/on_disk_cache.rs
@@ -1,28 +1,29 @@
 use crate::dep_graph::{DepNodeIndex, SerializedDepNodeIndex};
-use crate::errors::Diagnostic;
 use crate::hir;
 use crate::hir::def_id::{CrateNum, DefIndex, DefId, LocalDefId, LOCAL_CRATE};
 use crate::hir::map::definitions::DefPathHash;
 use crate::ich::{CachingSourceMapView, Fingerprint};
 use crate::mir::{self, interpret};
 use crate::mir::interpret::{AllocDecodingSession, AllocDecodingState};
-use rustc_data_structures::fx::FxHashMap;
-use rustc_data_structures::thin_vec::ThinVec;
-use rustc_data_structures::sync::{Lrc, Lock, HashMapExt, Once};
-use rustc_data_structures::indexed_vec::{IndexVec, Idx};
 use crate::rustc_serialize::{Decodable, Decoder, Encodable, Encoder, opaque,
                       SpecializedDecoder, SpecializedEncoder,
                       UseSpecializedDecodable, UseSpecializedEncodable};
 use crate::session::{CrateDisambiguator, Session};
+use crate::ty;
+use crate::ty::codec::{self as ty_codec, TyDecoder, TyEncoder};
+use crate::ty::context::TyCtxt;
+use crate::util::common::{time, time_ext};
+
+use errors::Diagnostic;
+use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::thin_vec::ThinVec;
+use rustc_data_structures::sync::{Lrc, Lock, HashMapExt, Once};
+use rustc_data_structures::indexed_vec::{IndexVec, Idx};
 use std::mem;
 use syntax::ast::NodeId;
 use syntax::source_map::{SourceMap, StableSourceFileId};
 use syntax_pos::{BytePos, Span, DUMMY_SP, SourceFile};
 use syntax_pos::hygiene::{Mark, SyntaxContext, ExpnInfo};
-use crate::ty;
-use crate::ty::codec::{self as ty_codec, TyDecoder, TyEncoder};
-use crate::ty::context::TyCtxt;
-use crate::util::common::time;
 
 const TAG_FILE_FOOTER: u128 = 0xC0FFEE_C0FFEE_C0FFEE_C0FFEE_C0FFEE;
 
@@ -103,7 +104,7 @@ fn to_usize(self) -> usize {
 }
 
 impl<'sess> OnDiskCache<'sess> {
-    /// Create a new OnDiskCache instance from the serialized data in `data`.
+    /// Creates a new OnDiskCache instance from the serialized data in `data`.
     pub fn new(sess: &'sess Session, data: Vec<u8>, start_pos: usize) -> OnDiskCache<'sess> {
         debug_assert!(sess.opts.incremental.is_some());
 
@@ -325,7 +326,7 @@ fn sorted_cnums_including_local_crate(tcx: TyCtxt<'_, '_, '_>) -> Vec<CrateNum>
         })
     }
 
-    /// Load a diagnostic emitted during the previous compilation session.
+    /// Loads a diagnostic emitted during the previous compilation session.
     pub fn load_diagnostics<'a, 'tcx>(&self,
                                       tcx: TyCtxt<'a, 'tcx, 'tcx>,
                                       dep_node_index: SerializedDepNodeIndex)
@@ -339,7 +340,7 @@ pub fn load_diagnostics<'a, 'tcx>(&self,
         diagnostics.unwrap_or_default()
     }
 
-    /// Store a diagnostic emitted during the current compilation session.
+    /// Stores a diagnostic emitted during the current compilation session.
     /// Anything stored like this will be available via `load_diagnostics` in
     /// the next compilation session.
     #[inline(never)]
@@ -353,7 +354,7 @@ pub fn store_diagnostics(&self,
     }
 
     /// Returns the cached query result if there is something in the cache for
-    /// the given SerializedDepNodeIndex. Otherwise returns None.
+    /// the given `SerializedDepNodeIndex`; otherwise returns `None`.
     pub fn try_load_query_result<'tcx, T>(&self,
                                           tcx: TyCtxt<'_, 'tcx, 'tcx>,
                                           dep_node_index: SerializedDepNodeIndex)
@@ -366,7 +367,7 @@ pub fn try_load_query_result<'tcx, T>(&self,
                           "query result")
     }
 
-    /// Store a diagnostic emitted during computation of an anonymous query.
+    /// Stores a diagnostic emitted during computation of an anonymous query.
     /// Since many anonymous queries can share the same `DepNode`, we aggregate
     /// them -- as opposed to regular queries where we assume that there is a
     /// 1:1 relationship between query-key and `DepNode`.
@@ -1081,23 +1082,22 @@ fn encode_query_results<'enc, 'a, 'tcx, Q, E>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
     let desc = &format!("encode_query_results for {}",
         unsafe { ::std::intrinsics::type_name::<Q>() });
 
-    time(tcx.sess, desc, || {
+    time_ext(tcx.sess.time_extended(), Some(tcx.sess), desc, || {
+        let map = Q::query_cache(tcx).borrow();
+        assert!(map.active.is_empty());
+        for (key, entry) in map.results.iter() {
+            if Q::cache_on_disk(tcx, key.clone()) {
+                let dep_node = SerializedDepNodeIndex::new(entry.index.index());
 
-    let map = Q::query_cache(tcx).borrow();
-    assert!(map.active.is_empty());
-    for (key, entry) in map.results.iter() {
-        if Q::cache_on_disk(tcx, key.clone()) {
-            let dep_node = SerializedDepNodeIndex::new(entry.index.index());
+                // Record position of the cache entry
+                query_result_index.push((dep_node, AbsoluteBytePos::new(encoder.position())));
 
-            // Record position of the cache entry
-            query_result_index.push((dep_node, AbsoluteBytePos::new(encoder.position())));
-
-            // Encode the type check tables with the SerializedDepNodeIndex
-            // as tag.
-            encoder.encode_tagged(dep_node, &entry.value)?;
+                // Encode the type check tables with the SerializedDepNodeIndex
+                // as tag.
+                encoder.encode_tagged(dep_node, &entry.value)?;
+            }
         }
-    }
 
-    Ok(())
+        Ok(())
     })
 }