Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 20 insertions, 26 deletions

diff --git a/compiler/rustc_data_structures/src/graph/dominators/mod.rs b/compiler/rustc_data_structures/src/graph/dominators/mod.rs
index 0a21a4249..0df9dc112 100644
--- a/compiler/rustc_data_structures/src/graph/dominators/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/dominators/mod.rs
@@ -10,7 +10,7 @@
 //! <https://www.cs.princeton.edu/courses/archive/spr03/cs423/download/dominators.pdf>
 
 use super::ControlFlowGraph;
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use std::cmp::Ordering;
 
 #[cfg(test)]
@@ -256,10 +256,10 @@ pub fn dominators<G: ControlFlowGraph>(graph: G) -> Dominators<G::Node> {
 /// where `+>` is a proper ancestor and `*>` is just an ancestor.
 #[inline]
 fn eval(
-    ancestor: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    ancestor: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     lastlinked: Option<PreorderIndex>,
-    semi: &IndexVec<PreorderIndex, PreorderIndex>,
-    label: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    semi: &IndexSlice<PreorderIndex, PreorderIndex>,
+    label: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     node: PreorderIndex,
 ) -> PreorderIndex {
     if is_processed(node, lastlinked) {
@@ -277,10 +277,10 @@ fn is_processed(v: PreorderIndex, lastlinked: Option<PreorderIndex>) -> bool {
 
 #[inline]
 fn compress(
-    ancestor: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    ancestor: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     lastlinked: Option<PreorderIndex>,
-    semi: &IndexVec<PreorderIndex, PreorderIndex>,
-    label: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    semi: &IndexSlice<PreorderIndex, PreorderIndex>,
+    label: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     v: PreorderIndex,
 ) {
     assert!(is_processed(v, lastlinked));
diff --git a/compiler/rustc_data_structures/src/graph/implementation/mod.rs b/compiler/rustc_data_structures/src/graph/implementation/mod.rs
index 1aa7ac024..9ff401c3c 100644
--- a/compiler/rustc_data_structures/src/graph/implementation/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/implementation/mod.rs
@@ -206,17 +206,11 @@ impl<N: Debug, E: Debug> Graph<N, E> {
         AdjacentEdges { graph: self, direction, next: first_edge }
     }
 
-    pub fn successor_nodes<'a>(
-        &'a self,
-        source: NodeIndex,
-    ) -> impl Iterator<Item = NodeIndex> + 'a {
+    pub fn successor_nodes(&self, source: NodeIndex) -> impl Iterator<Item = NodeIndex> + '_ {
         self.outgoing_edges(source).targets()
     }
 
-    pub fn predecessor_nodes<'a>(
-        &'a self,
-        target: NodeIndex,
-    ) -> impl Iterator<Item = NodeIndex> + 'a {
+    pub fn predecessor_nodes(&self, target: NodeIndex) -> impl Iterator<Item = NodeIndex> + '_ {
         self.incoming_edges(target).sources()
     }
 
diff --git a/compiler/rustc_data_structures/src/graph/iterate/mod.rs b/compiler/rustc_data_structures/src/graph/iterate/mod.rs
index 8a9af300c..01a83b40a 100644
--- a/compiler/rustc_data_structures/src/graph/iterate/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/iterate/mod.rs
@@ -1,6 +1,6 @@
 use super::{DirectedGraph, WithNumNodes, WithStartNode, WithSuccessors};
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use std::ops::ControlFlow;
 
 #[cfg(test)]
@@ -31,7 +31,7 @@ fn post_order_walk<G: DirectedGraph + WithSuccessors + WithNumNodes>(
     graph: &G,
     node: G::Node,
     result: &mut Vec<G::Node>,
-    visited: &mut IndexVec<G::Node, bool>,
+    visited: &mut IndexSlice<G::Node, bool>,
 ) {
     struct PostOrderFrame<Node, Iter> {
         node: Node,
diff --git a/compiler/rustc_data_structures/src/graph/scc/mod.rs b/compiler/rustc_data_structures/src/graph/scc/mod.rs
index c4b11951a..28c357e54 100644
--- a/compiler/rustc_data_structures/src/graph/scc/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/scc/mod.rs
@@ -8,7 +8,7 @@
 use crate::fx::FxHashSet;
 use crate::graph::vec_graph::VecGraph;
 use crate::graph::{DirectedGraph, GraphSuccessors, WithNumEdges, WithNumNodes, WithSuccessors};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use std::ops::Range;
 
 #[cfg(test)]
@@ -43,7 +43,7 @@ impl<N: Idx, S: Idx + Ord> Sccs<N, S> {
         SccsConstruction::construct(graph)
     }
 
-    pub fn scc_indices(&self) -> &IndexVec<N, S> {
+    pub fn scc_indices(&self) -> &IndexSlice<N, S> {
         &self.scc_indices
     }
 
@@ -123,7 +123,7 @@ impl<S: Idx> SccData<S> {
         self.ranges.len()
     }
 
-    pub fn ranges(&self) -> &IndexVec<S, Range<usize>> {
+    pub fn ranges(&self) -> &IndexSlice<S, Range<usize>> {
         &self.ranges
     }
 
diff --git a/compiler/rustc_data_structures/src/graph/scc/tests.rs b/compiler/rustc_data_structures/src/graph/scc/tests.rs
index 820a70fc8..513df666d 100644
--- a/compiler/rustc_data_structures/src/graph/scc/tests.rs
+++ b/compiler/rustc_data_structures/src/graph/scc/tests.rs
@@ -56,7 +56,7 @@ fn test_three_sccs() {
     assert_eq!(sccs.scc(1), 0);
     assert_eq!(sccs.scc(2), 0);
     assert_eq!(sccs.scc(3), 2);
-    assert_eq!(sccs.successors(0), &[]);
+    assert_eq!(sccs.successors(0), &[] as &[usize]);
     assert_eq!(sccs.successors(1), &[0]);
     assert_eq!(sccs.successors(2), &[0]);
 }
@@ -113,7 +113,7 @@ fn test_find_state_2() {
     assert_eq!(sccs.scc(2), 0);
     assert_eq!(sccs.scc(3), 0);
     assert_eq!(sccs.scc(4), 0);
-    assert_eq!(sccs.successors(0), &[]);
+    assert_eq!(sccs.successors(0), &[] as &[usize]);
 }
 
 #[test]
@@ -138,7 +138,7 @@ fn test_find_state_3() {
     assert_eq!(sccs.scc(3), 0);
     assert_eq!(sccs.scc(4), 0);
     assert_eq!(sccs.scc(5), 1);
-    assert_eq!(sccs.successors(0), &[]);
+    assert_eq!(sccs.successors(0), &[] as &[usize]);
     assert_eq!(sccs.successors(1), &[0]);
 }
 
diff --git a/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs b/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs
index c8f979267..7c866da60 100644
--- a/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs
+++ b/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs
@@ -27,11 +27,11 @@ fn successors() {
     let graph = create_graph();
     assert_eq!(graph.successors(0), &[1]);
     assert_eq!(graph.successors(1), &[2, 3]);
-    assert_eq!(graph.successors(2), &[]);
+    assert_eq!(graph.successors(2), &[] as &[usize]);
     assert_eq!(graph.successors(3), &[4]);
-    assert_eq!(graph.successors(4), &[]);
+    assert_eq!(graph.successors(4), &[] as &[usize]);
     assert_eq!(graph.successors(5), &[1]);
-    assert_eq!(graph.successors(6), &[]);
+    assert_eq!(graph.successors(6), &[] as &[usize]);
 }
 
 #[test]