From 813b114aa2384bd928ee9c673264f56bd7340981 Mon Sep 17 00:00:00 2001
From: David Smith <david_smith@apple.com>
Date: Tue, 25 Jun 2019 15:20:17 -0700
Subject: [PATCH] Add a benchmark for unicode Strings created via JSON decoding

---
 .../single-source/ObjectiveCBridging.swift    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/benchmark/single-source/ObjectiveCBridging.swift b/benchmark/single-source/ObjectiveCBridging.swift
index 6ce0131969c9e..bf66d49abe74e 100644
--- a/benchmark/single-source/ObjectiveCBridging.swift
+++ b/benchmark/single-source/ObjectiveCBridging.swift
@@ -76,6 +76,9 @@ public let ObjectiveCBridging = [
   BenchmarkInfo(name: "ObjectiveCBridgeASCIIStringFromFile",
                 runFunction: run_ASCIIStringFromFile, tags: ts,
                 setUpFunction: setup_ASCIIStringFromFile),
+  BenchmarkInfo(name: "UnicodeStringFromCodable",
+                 runFunction: run_UnicodeStringFromCodable, tags: ts,
+                 setUpFunction: setup_UnicodeStringFromCodable),
 ]
 
 #if _runtime(_ObjC)
@@ -744,3 +747,25 @@ public func run_ASCIIStringFromFile(_ N: Int) {
   #endif
 }
 
+var unicodeStringFromCodable:String? = nil
+var unicodeStringFromCodableDict = [String:Void]()
+public func setup_UnicodeStringFromCodable() {
+  let jsonString = "[\(String(reflecting: string))]"
+
+   let decoded = try JSONDecoder().decode([String].self, from: Data(jsonString.utf8))
+   let reEncoded = try JSONEncoder().encode(decoded)
+   let desc = try JSONDecoder().decode([String].self, from: reEncoded)
+
+   unicodeStringFromCodable = desc[0]
+}
+
+@inline(never)
+public func run_UnicodeStringFromCodable(_ N: Int) {
+  #if _runtime(_ObjC)
+  for _ in 0 ..< N {
+    for _ in 0..<100 {
+      unicodeStringFromCodableDict[identity(unicodeStringFromCodable)] = ()
+    }
+  }
+  #endif
+}