[turbofan] Also lower JSCreateCatchContext in typed lowering.

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

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index dc5825326d2e13941c3d16b2662371cbd1c76e8c..aac082840da9df43d4eba87e488c0fec13c29ce5 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -1140,6 +1140,29 @@ TEST_F(JSTypedLoweringTest, JSCreateWithContext) {
 
 
 // -----------------------------------------------------------------------------
+// JSCreateCatchContext
+
+
+TEST_F(JSTypedLoweringTest, JSCreateCatchContext) {
+  Handle<String> name = factory()->length_string();
+  Node* const exception = Parameter(Type::Receiver());
+  Node* const closure = Parameter(Type::Function());
+  Node* const context = Parameter(Type::Any());
+  Node* const effect = graph()->start();
+  Node* const control = graph()->start();
+  Reduction r =
+      Reduce(graph()->NewNode(javascript()->CreateCatchContext(name), exception,
+                              closure, context, effect, control));
+  ASSERT_TRUE(r.Changed());
+  EXPECT_THAT(r.replacement(),
+              IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
+                                            Context::MIN_CONTEXT_SLOTS + 1)),
+                                        IsBeginRegion(_), control),
+                             _));
+}
+
+
+// -----------------------------------------------------------------------------
 // JSInstanceOf
 // Test that instanceOf is reduced if and only if the right-hand side is a
 // function constant. Functional correctness is ensured elsewhere.