Add SILGen and IRGen tests for passing Objective-C types to C++

constructors.

Author: martinboehme

test/Interop/Cxx/class/constructors-objc-irgen.swift

@@ -0,0 +1,16 @@
+// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -I %S/Inputs -enable-cxx-interop -emit-ir %s | %FileCheck %s
+
+// REQUIRES: CPU=x86_64
+// REQUIRES: objc_interop
+
+import ConstructorsObjC
+
+public func createConstructorWithNSArrayParam() -> ConstructorWithNSArrayParam {
+  // CHECK: define swiftcc void @"$s4main33createConstructorWithNSArrayParamSo0cdeF0VyF"()
+  // CHECK-NOT: define
+  // CHECK: [[VAR:%[0-9]+]] = alloca %TSo27ConstructorWithNSArrayParamV, align 1
+  // CHECK: %{{[0-9]+}} = call swiftcc %TSo7NSArrayC* @"$sSa10FoundationE19_bridgeToObjectiveCSo7NSArrayCyF"(%swift.bridge* %{{[0-9]+}}, %swift.type* getelementptr inbounds (%swift.full_type, %swift.full_type* @"$sypN", i32 0, i32 1))
+  // CHECK: [[CAST_VAR:%[0-9]+]] = bitcast %TSo27ConstructorWithNSArrayParamV* [[VAR]] to %struct.ConstructorWithNSArrayParam*
+  // CHECK: call void @_ZN27ConstructorWithNSArrayParamC1EP7NSArray(%struct.ConstructorWithNSArrayParam* noalias [[CAST_VAR]], [[VAR]]* %{{[0-9]+}})
+  return ConstructorWithNSArrayParam([])
+}

test/Interop/Cxx/class/constructors-objc-silgen.swift

@@ -0,0 +1,12 @@
+// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -I %S/Inputs -enable-cxx-interop -emit-sil %s | %FileCheck %s
+
+// REQUIRES: objc_interop
+
+import ConstructorsObjC
+
+// CHECK: [[VAR:%[0-9]+]] = alloc_stack $ConstructorWithNSArrayParam
+// CHECK: [[TYPE:%[0-9]+]] = metatype $@thin ConstructorWithNSArrayParam.Type
+// CHECK: [[OPT_ARRAY:%[0-9]+]] = enum $Optional<NSArray>, #Optional.some!enumelt, %{{[0-9]+}} : $NSArray
+// CHECK: [[FUNC:%[0-9]+]] = function_ref @_ZN27ConstructorWithNSArrayParamC1EP7NSArray : $@convention(c) (Optional<NSArray>, @thin ConstructorWithNSArrayParam.Type) -> @out ConstructorWithNSArrayParam
+// CHECK: %{{[0-9]+}} = apply [[FUNC]]([[VAR]], [[OPT_ARRAY]], [[TYPE]]) : $@convention(c) (Optional<NSArray>, @thin ConstructorWithNSArrayParam.Type) -> @out ConstructorWithNSArrayParam
+let _ = ConstructorWithNSArrayParam([])