Implement a 'trial parse' step, that will abort pre-parsing excessively

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 75349e99d2793205704b44f396a83e67f21702e6..6fcdfc405a042e8ab0ab6b15e4cc4221211c3f56 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1370,6 +1370,9 @@ Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(
     // appropriately sized.
     DCHECK(!info.code().is_null());
     scope_info = ScopeInfo::Create(info.isolate(), info.zone(), info.scope());
+    if (literal->should_eager_compile()) {
+      info.code()->MarkToBeExecutedOnce(isolate);
+    }
   } else {
     return Handle<SharedFunctionInfo>::null();
   }