[intrinsics] Nuke %HasCachedArrayIndex and %GetCachedArrayIndex.

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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 3758 matching lines @@
   Str(fpscratch1,
       FieldMemOperand(scratch1,
                       FixedDoubleArray::kHeaderSize - elements_offset));
 }
 
 
 bool MacroAssembler::AllowThisStubCall(CodeStub* stub) {
   return has_frame_ || !stub->SometimesSetsUpAFrame();
 }
 
-
-void MacroAssembler::IndexFromHash(Register hash, Register index) {
-  // If the hash field contains an array index pick it out. The assert checks
-  // that the constants for the maximum number of digits for an array index
-  // cached in the hash field and the number of bits reserved for it does not
-  // conflict.
-  DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) <
-         (1 << String::kArrayIndexValueBits));
-  DecodeField<String::ArrayIndexValueBits>(index, hash);
-  SmiTag(index, index);
-}
-
-
 void MacroAssembler::EmitSeqStringSetCharCheck(
     Register string,
     Register index,
     SeqStringSetCharCheckIndexType index_type,
     Register scratch,
     uint32_t encoding_mask) {
   DCHECK(!AreAliased(string, index, scratch));
 
   if (index_type == kIndexIsSmi) {
     AssertSmi(index);
@@ skipping 1273 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64