[turbofan] Use FastCloneShallow[Array|Object]Stub if possible.

test/unittests/compiler/js-intrinsic-lowering-unittest.cc

Index: test/unittests/compiler/js-intrinsic-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
index 7ef004d975038bdeebe9fa719b2de7ad52c28344..451d4e374fee8aaf6ba85e4fd920265c25ca8ce7 100644
--- a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
+++ b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/code-factory.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/diamond.h"
 #include "src/compiler/js-graph.h"
@@ -66,6 +67,56 @@ TEST_F(JSIntrinsicLoweringTest, InlineOptimizedConstructDouble) {
 
 
 // -----------------------------------------------------------------------------
+// %_CreateArrayLiteral
+
+
+TEST_F(JSIntrinsicLoweringTest, InlineCreateArrayLiteral) {
+  i::FLAG_turbo_deoptimization = false;
+  Node* const input0 = Parameter(0);
+  Node* const input1 = Parameter(1);
+  Node* const input2 = HeapConstant(factory()->NewFixedArray(12));
+  Node* const input3 = NumberConstant(ArrayLiteral::kShallowElements);
+  Node* const context = Parameter(2);
+  Node* const effect = graph()->start();
+  Node* const control = graph()->start();
+  Reduction const r = Reduce(graph()->NewNode(
+      javascript()->CallRuntime(Runtime::kInlineCreateArrayLiteral, 4), input0,
+      input1, input2, input3, context, effect, control));
+  ASSERT_TRUE(r.Changed());
+  EXPECT_THAT(
+      r.replacement(),
+      IsCall(_, IsHeapConstant(Unique<HeapObject>::CreateImmovable(
+                    CodeFactory::FastCloneShallowArray(isolate()).code())),
+             input0, input1, input2, effect, control));
+}
+
+
+// -----------------------------------------------------------------------------
+// %_CreateObjectLiteral
+
+
+TEST_F(JSIntrinsicLoweringTest, InlineCreateObjectLiteral) {
+  i::FLAG_turbo_deoptimization = false;
+  Node* const input0 = Parameter(0);
+  Node* const input1 = Parameter(1);
+  Node* const input2 = HeapConstant(factory()->NewFixedArray(2 * 6));
+  Node* const input3 = NumberConstant(ObjectLiteral::kShallowProperties);
+  Node* const context = Parameter(2);
+  Node* const effect = graph()->start();
+  Node* const control = graph()->start();
+  Reduction const r = Reduce(graph()->NewNode(
+      javascript()->CallRuntime(Runtime::kInlineCreateObjectLiteral, 4), input0,
+      input1, input2, input3, context, effect, control));
+  ASSERT_TRUE(r.Changed());
+  EXPECT_THAT(
+      r.replacement(),
+      IsCall(_, IsHeapConstant(Unique<HeapObject>::CreateImmovable(
+                    CodeFactory::FastCloneShallowObject(isolate(), 6).code())),
+             input0, input1, input2, effect, control));
+}
+
+
+// -----------------------------------------------------------------------------
 // %_DoubleLo