From 77c40f8c6f8cc472f6438f7724d60bf3b7718a0c Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <nnethercote@mozilla.com>
Date: Wed, 9 May 2018 15:25:44 +1000
Subject: [PATCH] Inline `Span` methods.

Because they are simple and hot.

This change speeds up some incremental runs of a few rustc-perf
benchmarks, the best by 3%.
---
 src/libsyntax_pos/span_encoding.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libsyntax_pos/span_encoding.rs b/src/libsyntax_pos/span_encoding.rs
index b55fe4bcb2672..601a0273ae911 100644
--- a/src/libsyntax_pos/span_encoding.rs
+++ b/src/libsyntax_pos/span_encoding.rs
@@ -31,11 +31,13 @@ pub struct Span(u32);
 
 impl Copy for Span {}
 impl Clone for Span {
+    #[inline]
     fn clone(&self) -> Span {
         *self
     }
 }
 impl PartialEq for Span {
+    #[inline]
     fn eq(&self, other: &Span) -> bool {
         let a = self.0;
         let b = other.0;
@@ -44,6 +46,7 @@ impl PartialEq for Span {
 }
 impl Eq for Span {}
 impl Hash for Span {
+    #[inline]
     fn hash<H: Hasher>(&self, state: &mut H) {
         let a = self.0;
         a.hash(state)