Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/lib/Target/NVPTX/ManagedStringPool.h

@@ -0,0 +1,49 @@
+//===-- ManagedStringPool.h - Managed String Pool ---------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// The strings allocated from a managed string pool are owned by the string
+// pool and will be deleted together with the managed string pool.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_NVPTX_MANAGEDSTRINGPOOL_H
+#define LLVM_LIB_TARGET_NVPTX_MANAGEDSTRINGPOOL_H
+
+#include "llvm/ADT/SmallVector.h"
+#include <string>
+
+namespace llvm {
+
+/// ManagedStringPool - The strings allocated from a managed string pool are
+/// owned by the string pool and will be deleted together with the managed
+/// string pool.
+class ManagedStringPool {
+  SmallVector<std::string *, 8> Pool;
+
+public:
+  ManagedStringPool() = default;
+
+  ~ManagedStringPool() {
+    SmallVectorImpl<std::string *>::iterator Current = Pool.begin();
+    while (Current != Pool.end()) {
+      delete *Current;
+      Current++;
+    }
+  }
+
+  std::string *getManagedString(const char *S) {
+    std::string *Str = new std::string(S);
+    Pool.push_back(Str);
+    return Str;
+  }
+};
+
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_NVPTX_MANAGEDSTRINGPOOL_H