A64: add missing files.

src/a64/cpu-a64.h

Index: src/a64/cpu-a64.h
diff --git a/src/typing.h b/src/a64/cpu-a64.h
similarity index 54%
copy from src/typing.h
copy to src/a64/cpu-a64.h
index d8708c2ccbe6f456ff76bdb53d7d530e4ced405e..fd5cf2ceaa7168532ccf2810c100a593b397876e 100644
--- a/src/typing.h
+++ b/src/a64/cpu-a64.h
@@ -25,53 +25,64 @@
 // (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();
+
+  // 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 new(size_t size, Zone* zone) {
-    return zone->New(static_cast<int>(size));
+  static bool IsSafeForSnapshot(CpuFeature f) {
+    return (IsSupported(f) &&
+            (!Serializer::enabled() || !IsFoundByRuntimeProbingOnly(f)));
   }
-  void operator delete(void* pointer, Zone* zone) { }
-  void operator delete(void* pointer) { }
 
-  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+  // I and D cache line size in bytes.
+  static unsigned dcache_line_size();
+  static unsigned icache_line_size();
 
- private:
-  explicit AstTyper(CompilationInfo* info);
+  static unsigned supported_;
 
-  CompilationInfo* info_;
-  TypeFeedbackOracle oracle_;
-
-  TypeFeedbackOracle* oracle() { return &oracle_; }
-  Zone* zone() const { return info_->zone(); }
+ private:
+  // Return the content of the cache type register.
+  static uint32_t GetCacheType();
 
-  void VisitDeclarations(ZoneList<Declaration*>* declarations);
-  void VisitStatements(ZoneList<Statement*>* statements);
+  // I and D cache line size in bytes.
+  static unsigned icache_line_size_;
+  static unsigned dcache_line_size_;
 
-#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
-  AST_NODE_LIST(DECLARE_VISIT)
-#undef DECLARE_VISIT
+#ifdef DEBUG
+  static bool initialized_;
+#endif
 
-  DISALLOW_COPY_AND_ASSIGN(AstTyper);
+  DISALLOW_COPY_AND_ASSIGN(CpuFeatures);
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_TYPING_H_
+#endif  // V8_A64_CPU_A64_H_