From b5500b9ca0102f1ccaf32f0e77e96d0739aded9b Mon Sep 17 00:00:00 2001
From: pascal <pascal@openbsd.org>
Date: Sat, 3 Sep 2016 22:46:54 +0000
Subject: Use the space freed up by sparc and zaurus to import LLVM.

ok hackroom@
---
 .../clang/lib/Frontend/PCHContainerOperations.cpp  | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 gnu/llvm/tools/clang/lib/Frontend/PCHContainerOperations.cpp

(limited to 'gnu/llvm/tools/clang/lib/Frontend/PCHContainerOperations.cpp')

diff --git a/gnu/llvm/tools/clang/lib/Frontend/PCHContainerOperations.cpp b/gnu/llvm/tools/clang/lib/Frontend/PCHContainerOperations.cpp
new file mode 100644
index 00000000000..5e1d7720509
--- /dev/null
+++ b/gnu/llvm/tools/clang/lib/Frontend/PCHContainerOperations.cpp
@@ -0,0 +1,66 @@
+//===--- Frontend/PCHContainerOperations.cpp - PCH Containers ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines PCHContainerOperations and RawPCHContainerOperation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/PCHContainerOperations.h"
+#include "clang/AST/ASTConsumer.h"
+#include "llvm/Bitcode/BitstreamReader.h"
+#include "llvm/Support/raw_ostream.h"
+#include "clang/Lex/ModuleLoader.h"
+
+using namespace clang;
+
+namespace {
+
+/// \brief A PCHContainerGenerator that writes out the PCH to a flat file.
+class RawPCHContainerGenerator : public ASTConsumer {
+  std::shared_ptr<PCHBuffer> Buffer;
+  raw_pwrite_stream *OS;
+
+public:
+  RawPCHContainerGenerator(llvm::raw_pwrite_stream *OS,
+                           std::shared_ptr<PCHBuffer> Buffer)
+      : Buffer(Buffer), OS(OS) {}
+
+  ~RawPCHContainerGenerator() override = default;
+
+  void HandleTranslationUnit(ASTContext &Ctx) override {
+    if (Buffer->IsComplete) {
+      // Make sure it hits disk now.
+      *OS << Buffer->Data;
+      OS->flush();
+    }
+    // Free the space of the temporary buffer.
+    llvm::SmallVector<char, 0> Empty;
+    Buffer->Data = std::move(Empty);
+  }
+};
+
+} // anonymous namespace
+
+std::unique_ptr<ASTConsumer> RawPCHContainerWriter::CreatePCHContainerGenerator(
+    CompilerInstance &CI, const std::string &MainFileName,
+    const std::string &OutputFileName, llvm::raw_pwrite_stream *OS,
+    std::shared_ptr<PCHBuffer> Buffer) const {
+  return llvm::make_unique<RawPCHContainerGenerator>(OS, Buffer);
+}
+
+void RawPCHContainerReader::ExtractPCH(
+    llvm::MemoryBufferRef Buffer, llvm::BitstreamReader &StreamFile) const {
+  StreamFile.init((const unsigned char *)Buffer.getBufferStart(),
+                  (const unsigned char *)Buffer.getBufferEnd());
+}
+
+PCHContainerOperations::PCHContainerOperations() {
+  registerWriter(llvm::make_unique<RawPCHContainerWriter>());
+  registerReader(llvm::make_unique<RawPCHContainerReader>());
+}
-- 
cgit v1.2.3-59-g8ed1b