[arm64] cleanup heap numbers detection

src/arm64/full-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"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 2801 matching lines @@
   VisitForAccumulatorValue(args->at(0));
 
   Label materialize_true, materialize_false;
   Label* if_true = NULL;
   Label* if_false = NULL;
   Label* fall_through = NULL;
   context()->PrepareTest(&materialize_true, &materialize_false,
                          &if_true, &if_false, &fall_through);
 
   // Only a HeapNumber can be -0.0, so return false if we have something else.
-  __ CheckMap(x0, x1, Heap::kHeapNumberMapRootIndex, if_false, DO_SMI_CHECK);
+  __ JumpIfNotHeapNumber(x0, if_false, DO_SMI_CHECK);
 
   // Test the bit pattern.
   __ Ldr(x10, FieldMemOperand(x0, HeapNumber::kValueOffset));
   __ Cmp(x10, 1);   // Set V on 0x8000000000000000.
 
   PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
   Split(vs, if_true, if_false, fall_through);
 
   context()->Plug(if_true, if_false);
 }
@@ skipping 2076 matching lines @@
   return previous_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64