[TypeFeedbackVector] Combine the literals array and the feedback vector.

src/builtins/arm64/builtins-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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 1001 matching lines @@
          FieldMemOperand(x0, SharedFunctionInfo::kFunctionDataOffset));
   __ Bind(&bytecode_array_loaded);
 
   // Check whether we should continue to use the interpreter.
   Label switch_to_different_code_kind;
   __ Ldr(x0, FieldMemOperand(x0, SharedFunctionInfo::kCodeOffset));
   __ Cmp(x0, Operand(masm->CodeObject()));  // Self-reference to this code.
   __ B(ne, &switch_to_different_code_kind);
 
   // Increment invocation count for the function.
-  __ Ldr(x11, FieldMemOperand(x1, JSFunction::kLiteralsOffset));
-  __ Ldr(x11, FieldMemOperand(x11, LiteralsArray::kFeedbackVectorOffset));
+  __ Ldr(x11, FieldMemOperand(x1, JSFunction::kFeedbackVectorOffset));
   __ Ldr(x10, FieldMemOperand(x11, TypeFeedbackVector::kInvocationCountIndex *
                                            kPointerSize +
                                        TypeFeedbackVector::kHeaderSize));
   __ Add(x10, x10, Operand(Smi::FromInt(1)));
   __ Str(x10, FieldMemOperand(x11, TypeFeedbackVector::kInvocationCountIndex *
                                            kPointerSize +
                                        TypeFeedbackVector::kHeaderSize));
 
   // Check function data field is actually a BytecodeArray object.
   if (FLAG_debug_code) {
@@ skipping 337 matching lines @@
   Register temp = x5;
   Register array_pointer = x6;
 
   // Does the native context match?
   __ Add(array_pointer, map, Operand(index, LSL, kPointerSizeLog2));
   __ Ldr(temp, FieldMemOperand(array_pointer,
                                SharedFunctionInfo::kOffsetToPreviousContext));
   __ Ldr(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
   __ Cmp(temp, native_context);
   __ B(ne, &loop_bottom);
-  // Literals available?
+  // Feedback vector available?
   __ Ldr(temp, FieldMemOperand(array_pointer,
                                SharedFunctionInfo::kOffsetToPreviousLiterals));
   __ Ldr(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
   __ JumpIfSmi(temp, &gotta_call_runtime);
 
-  // Save the literals in the closure.
-  __ Str(temp, FieldMemOperand(closure, JSFunction::kLiteralsOffset));
-  __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, x7,
+  // Save the feedback vector in the closure.
+  __ Str(temp, FieldMemOperand(closure, JSFunction::kFeedbackVectorOffset));
+  __ RecordWriteField(closure, JSFunction::kFeedbackVectorOffset, temp, x7,
                       kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
                       OMIT_SMI_CHECK);
 
   // Code available?
   Register entry = x7;
   __ Ldr(entry,
          FieldMemOperand(array_pointer,
                          SharedFunctionInfo::kOffsetToPreviousCachedCode));
   __ Ldr(entry, FieldMemOperand(entry, WeakCell::kValueOffset));
   __ JumpIfSmi(entry, &try_shared);
@@ skipping 1827 matching lines @@
     __ Unreachable();
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM