Merge pull request #10468 from eeckstein/convert-benchmark

Author: swift-ci

benchmark/CMakeLists.txt

@@ -50,7 +50,6 @@ set(SWIFT_BENCH_MODULES
     single-source/ErrorHandling
     single-source/ExistentialPerformance
     single-source/Fibonacci
-    single-source/GlobalClass
     single-source/Hanoi
     single-source/Hash
     single-source/HashQuadratic

benchmark/single-source/GlobalClass.swift

@@ -55,7 +55,6 @@ import DropWhile
 import ErrorHandling
 import ExistentialPerformance
 import Fibonacci
-import GlobalClass
 import Hanoi
 import Hash
 import HashQuadratic
@@ -237,7 +236,6 @@ addTo(&precommitTests, "EqualSubstringString", run_EqualSubstringString)
 addTo(&precommitTests, "EqualSubstringSubstring", run_EqualSubstringSubstring)
 addTo(&precommitTests, "EqualSubstringSubstringGenericEquatable", run_EqualSubstringSubstringGenericEquatable)
 addTo(&precommitTests, "ErrorHandling", run_ErrorHandling)
-addTo(&precommitTests, "GlobalClass", run_GlobalClass)
 addTo(&precommitTests, "Hanoi", run_Hanoi)
 addTo(&precommitTests, "HashTest", run_HashTest)
 addTo(&precommitTests, "Histogram", run_Histogram)

benchmark/utils/main.swift

@@ -0,0 +1,38 @@
+// RUN: %target-swift-frontend -parse-as-library -O -emit-sil  %s | %FileCheck %s
+// REQUIRES: swift_stdlib_no_asserts,optimized_stdlib,CPU=x86_64
+
+// Test inline cache with a global class. Make sure the retain|release pair
+// for the fast path is removed in the loop.
+
+open class A
+{
+  open func f(_ a: Int) -> Int
+  {
+    return a + 1
+  }
+}
+
+var x = 0
+public var a = A()
+
+public func testit() {
+// CHECK-LABEL: sil @{{.*}}testityyF
+// CHECK:     bb0:
+// CHECK-NOT:   {{.*(retain|release).*}}
+// CHECK:       checked_cast_br
+// CHECK:     bb1{{.*}}:
+// CHECK-NOT:   {{.*(retain|release).*}}
+// CHECK:       return
+// CHECK:     bb2{{.*}}:
+// CHECK-NOT:   {{.*(retain|release|apply).*}}
+// CHECK:       br bb1
+// CHECK:     bb3{{.*}}:
+// CHECK-NEXT:  class_method
+// CHECK-NEXT:  strong_retain
+// CHECK-NEXT:  apply
+// CHECK-NEXT:  strong_release
+// CHECK-NEXT:  br bb1
+
+  x = a.f(x)
+}
+