[intrinsics] Nuke %HasCachedArrayIndex and %GetCachedArrayIndex.

src/x64/macro-assembler-x64.h

 // Copyright 2012 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.
 
 #ifndef V8_X64_MACRO_ASSEMBLER_X64_H_
 #define V8_X64_MACRO_ASSEMBLER_X64_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/base/flags.h"
@@ skipping 1397 matching lines @@
   // |temp| holds |result|'s map when done.
   void GetMapConstructor(Register result, Register map, Register temp);
 
   // Try to get function prototype of a function and puts the value in
   // the result register. Checks that the function really is a
   // function and jumps to the miss label if the fast checks fail. The
   // function register will be untouched; the other register may be
   // clobbered.
   void TryGetFunctionPrototype(Register function, Register result, Label* miss);
 
-  // Picks out an array index from the hash field.
-  // Register use:
-  //   hash - holds the index's hash. Clobbered.
-  //   index - holds the overwritten index on exit.
-  void IndexFromHash(Register hash, Register index);
-
   // Find the function context up the context chain.
   void LoadContext(Register dst, int context_chain_length);
 
   // Load the global object from the current context.
   void LoadGlobalObject(Register dst) {
     LoadNativeContextSlot(Context::EXTENSION_INDEX, dst);
   }
 
   // Load the global proxy from the current context.
   void LoadGlobalProxy(Register dst) {
@@ skipping 352 matching lines @@
 inline Operand StackOperandForReturnAddress(int32_t disp) {
   return Operand(rsp, disp);
 }
 
 #define ACCESS_MASM(masm) masm->
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_