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

src/ppc/code-stubs-ppc.cc

 // Copyright 2014 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_PPC
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 543 matching lines @@
   // NOTICE! This code is only reached after a smi-fast-case check, so
   // it is certain that at least one operand isn't a smi.
 
   // Handle the case where the objects are identical.  Either returns the answer
   // or goes to slow.  Only falls through if the objects were not identical.
   EmitIdenticalObjectComparison(masm, &slow, cc);
 
   // If either is a Smi (we know that not both are), then they can only
   // be strictly equal if the other is a HeapNumber.
   STATIC_ASSERT(kSmiTag == 0);
-  DCHECK_EQ(static_cast<Smi*>(0), Smi::kZero);
+  DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0));
   __ and_(r5, lhs, rhs);
   __ JumpIfNotSmi(r5, &not_smis);
   // One operand is a smi.  EmitSmiNonsmiComparison generates code that can:
   // 1) Return the answer.
   // 2) Go to slow.
   // 3) Fall through to both_loaded_as_doubles.
   // 4) Jump to lhs_not_nan.
   // In cases 3 and 4 we have found out we were dealing with a number-number
   // comparison.  The double values of the numbers have been loaded
   // into d7 and d6.
@@ skipping 3803 matching lines @@
     __ bind(&skip);
   }
 
   __ bind(&try_allocate);
 
   // Compute the sizes of backing store, parameter map, and arguments object.
   // 1. Parameter map, has 2 extra words containing context and backing store.
   const int kParameterMapHeaderSize =
       FixedArray::kHeaderSize + 2 * kPointerSize;
   // If there are no mapped parameters, we do not need the parameter_map.
-  __ CmpSmiLiteral(r9, Smi::kZero, r0);
+  __ CmpSmiLiteral(r9, Smi::FromInt(0), r0);
   if (CpuFeatures::IsSupported(ISELECT)) {
     __ SmiToPtrArrayOffset(r11, r9);
     __ addi(r11, r11, Operand(kParameterMapHeaderSize));
     __ isel(eq, r11, r0, r11);
   } else {
     Label skip2, skip3;
     __ bne(&skip2);
     __ li(r11, Operand::Zero());
     __ b(&skip3);
     __ bind(&skip2);
@@ skipping 61 matching lines @@
   // it will point to the backing store.
   __ addi(r7, r3, Operand(JSSloppyArgumentsObject::kSize));
   __ StoreP(r7, FieldMemOperand(r3, JSObject::kElementsOffset), r0);
 
   // r3 = address of new object (tagged)
   // r5 = argument count (tagged)
   // r7 = address of parameter map or backing store (tagged)
   // r9 = mapped parameter count (tagged)
   // Initialize parameter map. If there are no mapped arguments, we're done.
   Label skip_parameter_map;
-  __ CmpSmiLiteral(r9, Smi::kZero, r0);
+  __ CmpSmiLiteral(r9, Smi::FromInt(0), r0);
   if (CpuFeatures::IsSupported(ISELECT)) {
     __ isel(eq, r4, r7, r4);
     __ beq(&skip_parameter_map);
   } else {
     Label skip6;
     __ bne(&skip6);
     // Move backing store address to r4, because it is
     // expected there when filling in the unmapped arguments.
     __ mr(r4, r7);
     __ b(&skip_parameter_map);
@@ skipping 625 matching lines @@
   Register api_function_address = r5;
 
   __ push(receiver);
   // Push data from AccessorInfo.
   __ LoadP(scratch, FieldMemOperand(callback, AccessorInfo::kDataOffset));
   __ push(scratch);
   __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex);
   __ Push(scratch, scratch);
   __ mov(scratch, Operand(ExternalReference::isolate_address(isolate())));
   __ Push(scratch, holder);
-  __ Push(Smi::kZero);  // should_throw_on_error -> false
+  __ Push(Smi::FromInt(0));  // should_throw_on_error -> false
   __ LoadP(scratch, FieldMemOperand(callback, AccessorInfo::kNameOffset));
   __ push(scratch);
 
   // v8::PropertyCallbackInfo::args_ array and name handle.
   const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1;
 
   // Load address of v8::PropertyAccessorInfo::args_ array and name handle.
   __ mr(r3, sp);                               // r3 = Handle<Name>
   __ addi(r4, r3, Operand(1 * kPointerSize));  // r4 = v8::PCI::args_
 
@@ skipping 45 matching lines @@
       fp, (PropertyCallbackArguments::kReturnValueOffset + 3) * kPointerSize);
   CallApiFunctionAndReturn(masm, api_function_address, thunk_ref,
                            kStackUnwindSpace, NULL, return_value_operand, NULL);
 }
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC