Line data    Source code

       1             : //===-- StringSaver.cpp ---------------------------------------------------===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : 
      10             : #include "llvm/Support/StringSaver.h"
      11             : 
      12             : using namespace llvm;
      13             : 
      14     2467969 : StringRef StringSaver::save(StringRef S) {
      15     2467969 :   char *P = Alloc.Allocate<char>(S.size() + 1);
      16     2467969 :   if (!S.empty())
      17     2465247 :     memcpy(P, S.data(), S.size());
      18     2467969 :   P[S.size()] = '\0';
      19     2467969 :   return StringRef(P, S.size());
      20             : }
      21             : 
      22         520 : StringRef UniqueStringSaver::save(StringRef S) {
      23             :   auto R = Unique.insert(S);
      24         520 :   if (R.second)                 // cache miss, need to actually save the string
      25         392 :     *R.first = Strings.save(S); // safe replacement with equal value
      26         520 :   return *R.first;
      27             : }