[embedded] Merge two related tests, add a TODO about adding executable tests

Author: kubamracek

test/embedded/array-builtins-no-stdlib.swift

@@ -1,5 +1,7 @@
 // RUN: %target-swift-emit-ir %s -parse-stdlib -module-name Swift -enable-experimental-feature Embedded -target arm64e-apple-none | %FileCheck %s
 
+// TODO: these builtins in embedded Swift have a completely different IRGen, we need executable tests for them.
+
 class MyClass {}
 
 struct MyStruct {
@@ -19,6 +21,26 @@ public func foo(x: Builtin.RawPointer, y: Builtin.RawPointer, count: Builtin.Wor
   Builtin.destroyArray(MyStruct.self, x, count)
 }
 
+public func bar(x: Builtin.RawPointer, y: Builtin.RawPointer, count: Builtin.Word) {
+  var s = MyGenericStruct<MyStruct>()
+  s.foo(x: x, y: y, count: count)
+}
+
+public struct MyGenericStruct<T> {
+  public func foo(x: Builtin.RawPointer, y: Builtin.RawPointer, count: Builtin.Word) {
+    Builtin.copyArray(T.self, x, y, count)
+    Builtin.copyArray(T.self, x, y, count)
+    Builtin.takeArrayNoAlias(T.self, x, y, count)
+    Builtin.takeArrayFrontToBack(T.self, x, y, count)
+    Builtin.takeArrayBackToFront(T.self, x, y, count)
+    Builtin.assignCopyArrayNoAlias(T.self, x, y, count)
+    Builtin.assignCopyArrayFrontToBack(T.self, x, y, count)
+    Builtin.assignCopyArrayBackToFront(T.self, x, y, count)
+    Builtin.assignTakeArray(T.self, x, y, count)
+    Builtin.destroyArray(T.self, x, count)
+  }
+}
+
 // No runtime calls should be present.
 // CHECK-NOT: @swift_arrayInitWithCopy
 // CHECK-NOT: @swift_arrayInitWithTakeNoAlias