Auto merge of rust-lang#84560 - cjgillot:inline-iter, r=m-ou-se

bors · bors · commit 6e9b3696d494 · 2021-07-05T13:12:07.000Z
Inline Iterator as IntoIterator.

For some reason, it appears on rustc's own perf stats.
diff --git a/library/core/src/iter/traits/collect.rs b/library/core/src/iter/traits/collect.rs
@@ -238,6 +238,7 @@ impl<I: Iterator> IntoIterator for I {
     type Item = I::Item;
     type IntoIter = I;
 
+    #[inline]
     fn into_iter(self) -> I {
         self
     }

Original file line number	Diff line number	Diff line change
`@@ -238,6 +238,7 @@ impl<I: Iterator> IntoIterator for I {`
`238`	`238`	`type Item = I::Item;`
`239`	`239`	`type IntoIter = I;`
`240`	`240`
	`241`	`+ #[inline]`
`241`	`242`	`fn into_iter(self) -> I {`
`242`	`243`	`self`
`243`	`244`	`}`