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src/compiler/common-node-cache.h

+// Copyright 2014 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.
+
+#ifndef V8_COMPILER_COMMON_NODE_CACHE_H_
+#define V8_COMPILER_COMMON_NODE_CACHE_H_
+
+#include "src/assembler.h"
+#include "src/compiler/node-cache.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Bundles various caches for common nodes.
+class CommonNodeCache V8_FINAL : public ZoneObject {
+ public:
+  explicit CommonNodeCache(Zone* zone) : zone_(zone) {}
+
+  Node** FindInt32Constant(int32_t value) {
+    return int32_constants_.Find(zone_, value);
+  }
+
+  Node** FindFloat64Constant(double value) {
+    // We canonicalize double constants at the bit representation level.
+    return float64_constants_.Find(zone_, BitCast<int64_t>(value));
+  }
+
+  Node** FindExternalConstant(ExternalReference reference) {
+    return external_constants_.Find(zone_, reference.address());
+  }
+
+  Node** FindNumberConstant(double value) {
+    // We canonicalize double constants at the bit representation level.
+    return number_constants_.Find(zone_, BitCast<int64_t>(value));
+  }
+
+  Zone* zone() const { return zone_; }
+
+ private:
+  Int32NodeCache int32_constants_;
+  Int64NodeCache float64_constants_;
+  PtrNodeCache external_constants_;
+  Int64NodeCache number_constants_;
+  Zone* zone_;
+};
+}
+}
+}  // namespace v8::internal::compiler
+
+#endif  // V8_COMPILER_COMMON_NODE_CACHE_H_