Make benchmarks compile and run on Linux

Author: mtake

Diff for: benchmark/single-source/DictionaryBridge.swift

@@ -16,6 +16,7 @@
 import Foundation
 import TestsUtils
 
+#if _runtime(_ObjC)
 class Thing : NSObject {
 
   required override init() {
@@ -50,10 +51,13 @@ class Stuff {
 
   }
 }
+#endif
 
 @inline(never)
 public func run_DictionaryBridge(_ N: Int) {
+#if _runtime(_ObjC)
     for _ in 1...100*N {
         _ = Stuff()
     }
+#endif
 }

Diff for: benchmark/single-source/MapReduce.swift

@@ -133,6 +133,7 @@ public func run_MapReduceShortString(_ N: Int) {
 
 @inline(never)
 public func run_MapReduceClass(_ N: Int) {
+#if _runtime(_ObjC)
   let numbers = (0..<1000).map { NSDecimalNumber(value: $0) }
 
   var c = 0
@@ -141,10 +142,12 @@ public func run_MapReduceClass(_ N: Int) {
     c += mapped.reduce(0, &+)
   }
   CheckResults(c != 0, "IncorrectResults in MapReduce")
+#endif
 }
 
 @inline(never)
 public func run_MapReduceClassShort(_ N: Int) {
+#if _runtime(_ObjC)
   let numbers = (0..<10).map { NSDecimalNumber(value: $0) }
 
   var c = 0
@@ -153,5 +156,6 @@ public func run_MapReduceClassShort(_ N: Int) {
     c += mapped.reduce(0, &+)
   }
   CheckResults(c != 0, "IncorrectResults in MapReduce")
+#endif
 }
 

Diff for: benchmark/single-source/NSDictionaryCastToSwift.swift

@@ -20,6 +20,7 @@ import TestsUtils
 
 @inline(never)
 public func run_NSDictionaryCastToSwift(_ N: Int) {
+#if _runtime(_ObjC)
     let NSDict = NSDictionary()
     var swiftDict = [String: NSObject]()
     for _ in 1...10000*N {
@@ -31,4 +32,5 @@ public func run_NSDictionaryCastToSwift(_ N: Int) {
     CheckResults(swiftDict.isEmpty,
             "Incorrect result in swiftDict.isEmpty: " +
             "\(swiftDict.isEmpty) != true\n")
+#endif
 }

Diff for: benchmark/single-source/NSStringConversion.swift

@@ -15,8 +15,10 @@ import TestsUtils
 import Foundation
 
 public func run_NSStringConversion(_ N: Int) {
+#if _runtime(_ObjC)
 let test:NSString = NSString(cString: "test", encoding: String.Encoding.ascii.rawValue)!
   for _ in 1...N * 10000 {
     _ = test as String
   }
+#endif
 }