Intrinsic version of Object.runtimeType

runtime/vm/assembler_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // NOLINT
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/heap.h"
@@ skipping 3775 matching lines @@
   // Untag optimistically. Tag bit is shifted into the CARRY.
   SmiUntag(object);
   j(NOT_CARRY, is_smi, kNearJump);
   // Load cid: can't use LoadClassId, object is untagged. Use TIMES_2 scale
   // factor in the addressing mode to compensate for this.
   movl(TMP, Address(object, TIMES_2, class_id_offset));
   cmpl(TMP, Immediate(class_id));
 }
 
 
-void Assembler::LoadTaggedClassIdMayBeSmi(Register result, Register object) {
+void Assembler::LoadClassIdMayBeSmi(Register result, Register object) {
   ASSERT(result != object);
 
   // Load up a null object. We only need it so we can use LoadClassId on it in
   // the case that object is a Smi.
   LoadObject(result, Object::null_object(), PP);
   // Check if the object is a Smi.
   testq(object, Immediate(kSmiTagMask));
   // If the object *is* a Smi, use the null object instead.
   cmoveq(object, result);
   // Loads either the cid of the object if it isn't a Smi, or the cid of null
   // if it is a Smi, which will be ignored.
   LoadClassId(result, object);
 
   movq(object, Immediate(kSmiCid));
   // If object is a Smi, move the Smi cid into result. o/w leave alone.
   cmoveq(result, object);
+}
+
+
+void Assembler::LoadTaggedClassIdMayBeSmi(Register result, Register object) {
+  LoadClassIdMayBeSmi(result, object);
   // Finally, tag the result.
   SmiTag(result);
 }
 
 
 void Assembler::ComputeRange(Register result, Register value, Label* not_mint) {
   Label done, not_smi;
   testl(value, Immediate(kSmiTagMask));
   j(NOT_ZERO, &not_smi, Assembler::kNearJump);
 
@@ skipping 103 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters));
   return xmm_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64