[interpreter] Add CreateFunctionContext bytecode

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 58f6e7288dc9c71e5c37863e4c643c0dbbfafaa0..a9e3d13e97c3b15b72123b07638cc5cb3b69421d 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -3010,8 +3010,8 @@ void BytecodeGenerator::VisitNewLocalFunctionContext() {
         .StoreAccumulatorInRegister(scope_info)
         .CallRuntime(Runtime::kNewScriptContext, closure, 2);
   } else {
-    builder()->CallRuntime(Runtime::kNewFunctionContext,
-                           Register::function_closure(), 1);
+    builder()->CreateFunctionContext(
+        scope->GetScopeInfo(isolate())->ContextLength());

[Michael Starzinger, 2016/08/02 11:58:41]

Using the {ScopeInfo} here looks dangerous. The slot count should be ...

int slot_count = scope->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;

[klaasb, 2016/08/02 13:02:25]

Fixed.

   }
   execution_result()->SetResultInAccumulator();
 }