Revert "Add Smi::Zero and replace all Smi::FromInt(0) calls"

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 3812 matching lines @@
   Ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
 
   And(scratch, scratch, kStringRepresentationMask | kStringEncodingMask);
   Cmp(scratch, encoding_mask);
   Check(eq, kUnexpectedStringType);
 
   Ldr(scratch, FieldMemOperand(string, String::kLengthOffset));
   Cmp(index, index_type == kIndexIsSmi ? scratch : Operand::UntagSmi(scratch));
   Check(lt, kIndexIsTooLarge);
 
-  DCHECK_EQ(static_cast<Smi*>(0), Smi::kZero);
+  DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0));
   Cmp(index, 0);
   Check(ge, kIndexIsNegative);
 }
 
 
 void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg,
                                             Register scratch1,
                                             Register scratch2,
                                             Label* miss) {
   DCHECK(!AreAliased(holder_reg, scratch1, scratch2));
@@ skipping 1308 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64