1 //===-- StringSaver.cpp ---------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Support/StringSaver.h"
14 StringRef StringSaver::save(StringRef S) {
15 char *P = Alloc.Allocate<char>(S.size() + 1);
17 memcpy(P, S.data(), S.size());
19 return StringRef(P, S.size());
22 StringRef UniqueStringSaver::save(StringRef S) {
23 auto R = Unique.insert(S);
24 if (R.second) // cache miss, need to actually save the string
25 *R.first = Strings.save(S); // safe replacement with equal value