Put the type feedback vector in the unoptimized JavaScript frame.

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 9f25d60ddfbfd4b00b1fd6dabbea45d32d9c8e31..c0b6c193eb45360fc956c3ea7f25487110da61e4 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -1462,6 +1462,10 @@ class MacroAssembler: public Assembler {
   void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0,
                                         Register scratch1, Label* found);
 
+  // OSR needs to adjust locals on the stack down one word over the vector.
+  void OSRDropVectorFromStack(int unoptimized_slot_count, Register scratch0,
+                              Register scratch1);
+
  private:
   // Order general registers are pushed by Pushad.
   // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15.