From 0b57cec536236d46e3dba9bd041533462f33dbb7 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Fri, 20 Dec 2019 19:53:05 +0000 Subject: Move all sources from the llvm project into contrib/llvm-project. This uses the new layout of the upstream repository, which was recently migrated to GitHub, and converted into a "monorepo". That is, most of the earlier separate sub-projects with their own branches and tags were consolidated into one top-level directory, and are now branched and tagged together. Updating the vendor area to match this layout is next. --- .../llvm-project/llvm/lib/Support/StringSaver.cpp | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 contrib/llvm-project/llvm/lib/Support/StringSaver.cpp (limited to 'contrib/llvm-project/llvm/lib/Support/StringSaver.cpp') diff --git a/contrib/llvm-project/llvm/lib/Support/StringSaver.cpp b/contrib/llvm-project/llvm/lib/Support/StringSaver.cpp new file mode 100644 index 000000000000..f7ccfb97ea79 --- /dev/null +++ b/contrib/llvm-project/llvm/lib/Support/StringSaver.cpp @@ -0,0 +1,26 @@ +//===-- StringSaver.cpp ---------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/StringSaver.h" + +using namespace llvm; + +StringRef StringSaver::save(StringRef S) { + char *P = Alloc.Allocate(S.size() + 1); + if (!S.empty()) + memcpy(P, S.data(), S.size()); + P[S.size()] = '\0'; + return StringRef(P, S.size()); +} + +StringRef UniqueStringSaver::save(StringRef S) { + auto R = Unique.insert(S); + if (R.second) // cache miss, need to actually save the string + *R.first = Strings.save(S); // safe replacement with equal value + return *R.first; +} -- cgit v1.2.3