A64: add missing files.

src/a64/cpu-a64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_TYPING_H_
-#define V8_TYPING_H_
+#ifndef V8_A64_CPU_A64_H_
+#define V8_A64_CPU_A64_H_
 
-#include "v8.h"
-
-#include "allocation.h"
-#include "ast.h"
-#include "compiler.h"
-#include "type-info.h"
-#include "zone.h"
-#include "scopes.h"
+#include <stdio.h>
+#include "serialize.h"
+#include "cpu.h"
 
 namespace v8 {
 namespace internal {
 
 
-class AstTyper: public AstVisitor {
+// CpuFeatures keeps track of which features are supported by the target CPU.
+// Supported features must be enabled by a CpuFeatureScope before use.
+class CpuFeatures : public AllStatic {
  public:
-  static void Type(CompilationInfo* info);
+  // Detect features of the target CPU. Set safe defaults if the serializer
+  // is enabled (snapshots must be portable).
+  static void Probe();
 
-  void* operator new(size_t size, Zone* zone) {
-    return zone->New(static_cast<int>(size));
+  // Check whether a feature is supported by the target CPU.
+  static bool IsSupported(CpuFeature f) {
+    ASSERT(initialized_);
+    // There are no optional features for A64.
+    return false;
+  };
+
+  static bool IsFoundByRuntimeProbingOnly(CpuFeature f) {
+    ASSERT(initialized_);
+    // There are no optional features for A64.
+    return false;
   }
-  void operator delete(void* pointer, Zone* zone) { }
-  void operator delete(void* pointer) { }
 
-  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+  static bool IsSafeForSnapshot(CpuFeature f) {
+    return (IsSupported(f) &&
+            (!Serializer::enabled() || !IsFoundByRuntimeProbingOnly(f)));
+  }
+
+  // I and D cache line size in bytes.
+  static unsigned dcache_line_size();
+  static unsigned icache_line_size();
+
+  static unsigned supported_;
 
  private:
-  explicit AstTyper(CompilationInfo* info);
+  // Return the content of the cache type register.
+  static uint32_t GetCacheType();
 
-  CompilationInfo* info_;
-  TypeFeedbackOracle oracle_;
+  // I and D cache line size in bytes.
+  static unsigned icache_line_size_;
+  static unsigned dcache_line_size_;
 
-  TypeFeedbackOracle* oracle() { return &oracle_; }
-  Zone* zone() const { return info_->zone(); }
+#ifdef DEBUG
+  static bool initialized_;
+#endif
 
-  void VisitDeclarations(ZoneList<Declaration*>* declarations);
-  void VisitStatements(ZoneList<Statement*>* statements);
-
-#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
-  AST_NODE_LIST(DECLARE_VISIT)
-#undef DECLARE_VISIT
-
-  DISALLOW_COPY_AND_ASSIGN(AstTyper);
+  DISALLOW_COPY_AND_ASSIGN(CpuFeatures);
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_TYPING_H_
+#endif  // V8_A64_CPU_A64_H_