Inline first_token.

nnethercote · nnethercote · commit b4fdf648eab9 · 2022-08-01T08:11:15.000+10:00
Because it's tiny and hot.
diff --git a/compiler/rustc_lexer/src/lib.rs b/compiler/rustc_lexer/src/lib.rs
@@ -221,6 +221,7 @@ pub fn strip_shebang(input: &str) -> Option<usize> {
 }
 
 /// Parses the first token from the provided input string.
+#[inline]
 pub fn first_token(input: &str) -> Token {
     debug_assert!(!input.is_empty());
     Cursor::new(input).advance_token()

Original file line number	Diff line number	Diff line change
`@@ -221,6 +221,7 @@ pub fn strip_shebang(input: &str) -> Option<usize> {`
`221`	`221`	`}`
`222`	`222`
`223`	`223`	`/// Parses the first token from the provided input string.`
	`224`	`+#[inline]`
`224`	`225`	`pub fn first_token(input: &str) -> Token {`
`225`	`226`	`debug_assert!(!input.is_empty());`
`226`	`227`	`Cursor::new(input).advance_token()`