ARM64: Add and use SmiTagAndPush.

src/arm64/lithium-codegen-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.
 
 #include "src/v8.h"
 
 #include "src/arm64/lithium-codegen-arm64.h"
 #include "src/arm64/lithium-gap-resolver-arm64.h"
 #include "src/code-stubs.h"
 #include "src/stub-cache.h"
@@ skipping 5475 matching lines @@
   // TODO(3095996): Get rid of this. For now, we need to make the
   // result register contain a valid pointer because it is already
   // contained in the register pointer map.
   __ Mov(result, 0);
 
   PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters);
   __ Push(string);
   // Push the index as a smi. This is safe because of the checks in
   // DoStringCharCodeAt above.
   Register index = ToRegister(instr->index());
-  __ SmiTag(index);
-  __ Push(index);
+  __ SmiTagAndPush(index);
 
   CallRuntimeFromDeferred(Runtime::kHiddenStringCharCodeAt, 2, instr,
                           instr->context());
   __ AssertSmi(x0);
   __ SmiUntag(x0);
   __ StoreToSafepointRegisterSlot(x0, result);
 }
 
 
 void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) {
@@ skipping 28 matching lines @@
 void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) {
   Register char_code = ToRegister(instr->char_code());
   Register result = ToRegister(instr->result());
 
   // TODO(3095996): Get rid of this. For now, we need to make the
   // result register contain a valid pointer because it is already
   // contained in the register pointer map.
   __ Mov(result, 0);
 
   PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters);
-  __ SmiTag(char_code);
-  __ Push(char_code);
+  __ SmiTagAndPush(char_code);
   CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context());
   __ StoreToSafepointRegisterSlot(x0, result);
 }
 
 
 void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) {
   ASSERT(ToRegister(instr->context()).is(cp));
   Token::Value op = instr->op();
 
   Handle<Code> ic = CompareIC::GetUninitialized(isolate(), op);
@@ skipping 476 matching lines @@
   __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
   // Index is equal to negated out of object property index plus 1.
   __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2));
   __ Ldr(result, FieldMemOperand(result,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ Bind(deferred->exit());
   __ Bind(&done);
 }
 
 } }  // namespace v8::internal