[compiler] Mark shared functions for optimization

src/builtins/x87/builtins-x87.cc

Index: src/builtins/x87/builtins-x87.cc
diff --git a/src/builtins/x87/builtins-x87.cc b/src/builtins/x87/builtins-x87.cc
index 4d76070781b3f0c897bd7c95a0493c5d0ae513a1..06f3da870b88d3de39f66f7579a12b441d9c5e12 100644
--- a/src/builtins/x87/builtins-x87.cc
+++ b/src/builtins/x87/builtins-x87.cc
@@ -1161,8 +1161,15 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ pop(closure);
   __ pop(new_target);
   __ pop(argument_count);
-  // Is the full code valid?
   __ mov(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
+  // Is the shared function marked for optimization?
+  __ testb(
+      FieldOperand(entry,
+                   SharedFunctionInfo::kWasMarkedForOptimizationByteOffset),
+      Immediate(
+          1 << SharedFunctionInfo::kWasMarkedForOptimizationBitWithinByte));
+  __ j(not_zero, &gotta_call_runtime_no_stack);
+  // Is the full code valid?
   __ mov(entry, FieldOperand(entry, SharedFunctionInfo::kCodeOffset));
   __ mov(ebx, FieldOperand(entry, Code::kFlagsOffset));
   __ and_(ebx, Code::KindField::kMask);