[es6] Perform the IsConstructor test in GetSuperConstructor.

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 26409d3696426906fd5dba410ab1b631e220cb76..ff1a27c7cde528d61e85e8b0e3d5774f35d0422b 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1687,6 +1687,12 @@ void BytecodeGraphBuilder::VisitDeletePropertySloppy() {
   BuildDelete(LanguageMode::SLOPPY);
 }
 
+void BytecodeGraphBuilder::VisitGetSuperConstructor() {
+  Node* node = NewNode(javascript()->GetSuperConstructor(),
+                       environment()->LookupAccumulator());
+  environment()->BindAccumulator(node);
+}
+
 void BytecodeGraphBuilder::BuildCompareOp(const Operator* js_op) {
   FrameStateBeforeAndAfter states(this);
   Node* left =