Cache optimized code for OSR.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 4dd24fd871552456a10bb77ab8f6a0e4b4b25138..66dc7f788400c2383c6770ae52a9dfb81ae630d1 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -6018,6 +6018,12 @@ class HObjectAccess V8_FINAL {
     return HObjectAccess(kInobject, SharedFunctionInfo::kFirstContextSlot);
   }
 
+  static HObjectAccess ForFirstOsrAstIdSlot() {
+    return HObjectAccess(kInobject,
+                         SharedFunctionInfo::kFirstOsrAstIdSlot,
+                         Representation::Smi());
+  }
+
   static HObjectAccess ForOptimizedCodeMap() {
     return HObjectAccess(kInobject,
                          SharedFunctionInfo::kOptimizedCodeMapOffset);