Put the type feedback vector in the unoptimized JavaScript frame.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index 89c2ffb6f8fd15854f3a29e248946c1f05641c41..eee00fa43c354cd5b7244bfe1159aeda9dc4499d 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -937,8 +937,13 @@ void CodeGenerator::AssemblePrologue() {
     // remaining stack slots.
     if (FLAG_code_comments) __ RecordComment("-- OSR entrypoint --");
     osr_pc_offset_ = __ pc_offset();
-    DCHECK(stack_slots >= frame()->GetOsrStackSlotCount());
-    stack_slots -= frame()->GetOsrStackSlotCount();
+    int osr_stack_slot_count = frame()->GetOsrStackSlotCount();
+    DCHECK(stack_slots >= osr_stack_slot_count);
+    stack_slots -= osr_stack_slot_count;
+
+    // Full-code javascript functions have a type feedback vector in the frame.
+    // Shift any locals down one slot, and adjust the stack pointer.
+    __ OSRDropVectorFromStack(osr_stack_slot_count, x2, x0);
   }
 
   if (stack_slots > 0) {