Merge pull request swiftlang#41132 from lorentey/ObjectIdentifier-single-shot-hashing

lorentey · web-flow · commit 823e5d4e3ed2 · 2022-02-02T17:47:19.000-08:00
[stdlib] Speed up `ObjectIdentifier`-keyed dictionaries
diff --git a/stdlib/public/core/ObjectIdentifier.swift b/stdlib/public/core/ObjectIdentifier.swift
@@ -95,6 +95,11 @@ extension ObjectIdentifier: Hashable {
   public func hash(into hasher: inout Hasher) {
     hasher.combine(Int(Builtin.ptrtoint_Word(_value)))
   }
+
+  @_alwaysEmitIntoClient // For back deployment
+  public func _rawHashValue(seed: Int) -> Int {
+    Int(Builtin.ptrtoint_Word(_value))._rawHashValue(seed: seed)
+  }
 }
 
 extension UInt {

Original file line number	Diff line number	Diff line change
`@@ -95,6 +95,11 @@ extension ObjectIdentifier: Hashable {`
`95`	`95`	`public func hash(into hasher: inout Hasher) {`
`96`	`96`	`hasher.combine(Int(Builtin.ptrtoint_Word(_value)))`
`97`	`97`	`}`
	`98`	`+`
	`99`	`+ @_alwaysEmitIntoClient // For back deployment`
	`100`	`+ public func _rawHashValue(seed: Int) -> Int {`
	`101`	`+ Int(Builtin.ptrtoint_Word(_value))._rawHashValue(seed: seed)`
	`102`	`+ }`
`98`	`103`	`}`
`99`	`104`
`100`	`105`	`extension UInt {`