Rollup merge of #41249 - GuillaumeGomez:rustdoc-render, r=steveklabnik,frewsxcv

[rust.git] / src / librustc / middle / liveness.rs

diff --git a/src/librustc/middle/liveness.rs b/src/librustc/middle/liveness.rs
index 769dc8aeb54ddce49744a685505a047dd6da0e41..b7da8480c1cefdf6cf740699ff6e6249b442edd8 100644 (file)
--- a/src/librustc/middle/liveness.rs
+++ b/src/librustc/middle/liveness.rs
@@ -109,7 +109,6 @@
 use self::LiveNodeKind::*;
 use self::VarKind::*;
 
-use dep_graph::DepNode;
 use hir::def::*;
 use ty::{self, TyCtxt, ParameterEnvironment};
 use traits::{self, Reveal};
@@ -196,7 +195,6 @@ fn visit_fn(&mut self, fk: FnKind<'tcx>, fd: &'tcx hir::FnDecl,
 }
 
 pub fn check_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>) {
-    let _task = tcx.dep_graph.in_task(DepNode::Liveness);
     tcx.hir.krate().visit_all_item_likes(&mut IrMaps::new(tcx).as_deep_visitor());
     tcx.sess.abort_if_errors();
 }
@@ -821,8 +819,8 @@ fn compute(&mut self, body: &hir::Expr) -> LiveNode {
 
     fn propagate_through_block(&mut self, blk: &hir::Block, succ: LiveNode)
                                -> LiveNode {
-        if let Some(break_to_expr_id) = blk.break_to_expr_id {
-            self.breakable_block_ln.insert(break_to_expr_id, succ);
+        if blk.targeted_by_break {
+            self.breakable_block_ln.insert(blk.id, succ);
         }
         let succ = self.propagate_through_opt_expr(blk.expr.as_ref().map(|e| &**e), succ);
         blk.stmts.iter().rev().fold(succ, |succ, stmt| {
@@ -951,7 +949,7 @@ fn propagate_through_expr(&mut self, expr: &Expr, succ: LiveNode)
             //   (  succ  )
             //
             let else_ln = self.propagate_through_opt_expr(els.as_ref().map(|e| &**e), succ);
-            let then_ln = self.propagate_through_block(&then, succ);
+            let then_ln = self.propagate_through_expr(&then, succ);
             let ln = self.live_node(expr.id, expr.span);
             self.init_from_succ(ln, else_ln);
             self.merge_from_succ(ln, then_ln, false);