[stdlib] Make Character.hash(into:) explicitly not inlinable

lorentey · lorentey · commit bae6f529e147 · 2018-04-30T10:17:09.000+01:00
The @inlinable attribute was left off by accident, but this turned out to be a measurable performance boost for Character hashing. Also add @effects(releasenone), for good measure.
diff --git a/stdlib/public/core/Character.swift b/stdlib/public/core/Character.swift
@@ -477,6 +477,8 @@ extension Character : Comparable {
 }
 
 extension Character: Hashable {
+  // not @inlinable (performance)
+  @effects(releasenone)
   public func hash(into hasher: inout Hasher) {
     // FIXME(performance): constructing a temporary string is extremely
     // wasteful and inefficient.

Original file line number	Diff line number	Diff line change
`@@ -477,6 +477,8 @@ extension Character : Comparable {`
`477`	`477`	`}`
`478`	`478`
`479`	`479`	`extension Character: Hashable {`
	`480`	`+ // not @inlinable (performance)`
	`481`	`+ @effects(releasenone)`
`480`	`482`	`public func hash(into hasher: inout Hasher) {`
`481`	`483`	`// FIXME(performance): constructing a temporary string is extremely`
`482`	`484`	`// wasteful and inefficient.`