[intrinsics] Nuke %HasCachedArrayIndex and %GetCachedArrayIndex.

src/arm64/macro-assembler-arm64.h

 // 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.
 
 #ifndef V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
 #define V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
 
 #include <vector>
 
 #include "src/arm64/assembler-arm64.h"
@@ skipping 1573 matching lines @@
   // If it can, store it at the index specified by key_reg in the array,
   // otherwise jump to fail.
   void StoreNumberToDoubleElements(Register value_reg,
                                    Register key_reg,
                                    Register elements_reg,
                                    Register scratch1,
                                    FPRegister fpscratch1,
                                    Label* fail,
                                    int elements_offset = 0);
 
-  // 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);
-
   // ---------------------------------------------------------------------------
   // Inline caching support.
 
   void EmitSeqStringSetCharCheck(Register string,
                                  Register index,
                                  SeqStringSetCharCheckIndexType index_type,
                                  Register scratch,
                                  uint32_t encoding_mask);
 
   // Generate code for checking access rights - used for security checks
@@ skipping 685 matching lines @@
   class RegisterBits : public BitField<unsigned, 0, 5> {};
   class DeltaBits : public BitField<uint32_t, 5, 32-5> {};
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #define ACCESS_MASM(masm) masm->
 
 #endif  // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_