Auto merge of #35079 - nikomatsakis:incr-comp-ich-32753, r=mw

Various improvements to the SVH

This fixes a few points for the SVH:

- incorporate resolve results into the SVH;
- don't include nested items.

r? @michaelwoerister

cc #32753 (not fully fixed I don't think)

src/librustc/dep_graph/dep_node.rs

@@ -150,6 +150,7 @@ impl<D: Clone + Debug> DepNode<D> {
         check! {
             CollectItem,
             BorrowCheck,
+            Hir,
             TransCrateItem,
             TypeckItemType,
             TypeckItemBody,

src/librustc/ty/context.rs

@@ -14,6 +14,7 @@ use dep_graph::{DepGraph, DepTrackingMap};
 use session::Session;
 use middle;
 use middle::cstore::LOCAL_CRATE;
+use hir::TraitMap;
 use hir::def::DefMap;
 use hir::def_id::{DefId, DefIndex};
 use hir::map as ast_map;
@@ -299,8 +300,16 @@ pub struct GlobalCtxt<'tcx> {
     pub types: CommonTypes<'tcx>,
 
     pub sess: &'tcx Session,
+
+    /// Map from path id to the results from resolve; generated
+    /// initially by resolve and updated during typeck in some cases
+    /// (e.g., UFCS paths)
     pub def_map: RefCell<DefMap>,
 
+    /// Map indicating what traits are in scope for places where this
+    /// is relevant; generated by resolve.
+    pub trait_map: TraitMap,
+
     pub named_region_map: resolve_lifetime::NamedRegionMap,
 
     pub region_maps: RegionMaps,
@@ -666,6 +675,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
     pub fn create_and_enter<F, R>(s: &'tcx Session,
                                   arenas: &'tcx CtxtArenas<'tcx>,
                                   def_map: DefMap,
+                                  trait_map: TraitMap,
                                   named_region_map: resolve_lifetime::NamedRegionMap,
                                   map: ast_map::Map<'tcx>,
                                   freevars: FreevarMap,
@@ -694,6 +704,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
             variance_computed: Cell::new(false),
             sess: s,
             def_map: RefCell::new(def_map),
+            trait_map: trait_map,
             tables: RefCell::new(Tables::empty()),
             impl_trait_refs: RefCell::new(DepTrackingMap::new(dep_graph.clone())),
             trait_defs: RefCell::new(DepTrackingMap::new(dep_graph.clone())),

src/librustc_driver/driver.rs

@@ -846,10 +846,10 @@ pub fn phase_3_run_analysis_passes<'tcx, F, R>(sess: &'tcx Session,
 
     let index = stability::Index::new(&hir_map);
 
-    let trait_map = resolutions.trait_map;
     TyCtxt::create_and_enter(sess,
                              arenas,
                              resolutions.def_map,
+                             resolutions.trait_map,
                              named_region_map,
                              hir_map,
                              resolutions.freevars,
@@ -864,7 +864,7 @@ pub fn phase_3_run_analysis_passes<'tcx, F, R>(sess: &'tcx Session,
              || rustc_incremental::load_dep_graph(tcx));
 
         // passes are timed inside typeck
-        try_with_f!(typeck::check_crate(tcx, trait_map), (tcx, None, analysis));
+        try_with_f!(typeck::check_crate(tcx), (tcx, None, analysis));
 
         time(time_passes,
              "const checking",

src/librustc_driver/test.rs

@@ -131,6 +131,7 @@ fn test_env<F>(source_string: &str,
     TyCtxt::create_and_enter(&sess,
                              &arenas,
                              resolutions.def_map,
+                             resolutions.trait_map,
                              named_region_map.unwrap(),
                              ast_map,
                              resolutions.freevars,