Put the type feedback vector in the unoptimized JavaScript frame.

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 4532 matching lines @@
   Bind(&loop_again);
   Ldr(current, FieldMemOperand(current, HeapObject::kMapOffset));
   Ldrb(scratch1, FieldMemOperand(current, Map::kBitField2Offset));
   DecodeField<Map::ElementsKindBits>(scratch1);
   CompareAndBranch(scratch1, DICTIONARY_ELEMENTS, eq, found);
   Ldr(current, FieldMemOperand(current, Map::kPrototypeOffset));
   CompareAndBranch(current, Operand(factory->null_value()), ne, &loop_again);
 }
 
 
+void MacroAssembler::OSRDropVectorFromStack(int unoptimized_slot_count,
+                                            Register scratch0,
+                                            Register scratch1) {
+  DCHECK(jssp.Is(__ StackPointer()));
+  if (unoptimized_slot_count > 0) {
+    Label loop_start;
+    Add(scratch0, fp, JavaScriptFrameConstants::kFeedbackVectorOffset);
+    bind(&loop_start);
+    Ldr(scratch1, MemOperand(scratch0, -1 * kPointerSize));
+    Str(scratch1, MemOperand(scratch0, 0));
+    Sub(scratch0, scratch0, kPointerSize);
+    Cmp(scratch0, jssp);
+    B(gt, &loop_start);
+  }
+  Add(jssp, jssp, kPointerSize);
+}
+
+
 void MacroAssembler::GetRelocatedValueLocation(Register ldr_location,
                                                Register result) {
   DCHECK(!result.Is(ldr_location));
   const uint32_t kLdrLitOffset_lsb = 5;
   const uint32_t kLdrLitOffset_width = 19;
   Ldr(result, MemOperand(ldr_location));
   if (emit_debug_code()) {
     And(result, result, LoadLiteralFMask);
     Cmp(result, LoadLiteralFixed);
     Check(eq, kTheInstructionToPatchShouldBeAnLdrLiteral);
@@ skipping 698 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64