Revert "Modules: Cache PCMs in memory and avoid a use-after-free"

This reverts commit r298165, as it broke the ARM builds.

llvm-svn: 298185

1 files changed, 0 insertions, 94 deletions

diff --git a/clang/unittests/Basic/MemoryBufferCacheTest.cpp b/clang/unittests/Basic/MemoryBufferCacheTest.cpp
deleted file mode 100644
index be243c28037..00000000000
--- a/clang/unittests/Basic/MemoryBufferCacheTest.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-//===- MemoryBufferCacheTest.cpp - MemoryBufferCache tests ----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Basic/MemoryBufferCache.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "gtest/gtest.h"
-
-using namespace llvm;
-using namespace clang;
-
-namespace {
-
-std::unique_ptr<MemoryBuffer> getBuffer(int I) {
-  SmallVector<char, 8> Bytes;
-  raw_svector_ostream(Bytes) << "data:" << I;
-  return MemoryBuffer::getMemBuffer(StringRef(Bytes.data(), Bytes.size()));
-}
-
-TEST(MemoryBufferCacheTest, addBuffer) {
-  auto B1 = getBuffer(1);
-  auto B2 = getBuffer(2);
-  auto B3 = getBuffer(3);
-  auto *RawB1 = B1.get();
-  auto *RawB2 = B2.get();
-  auto *RawB3 = B3.get();
-
-  // Add a few buffers.
-  MemoryBufferCache Cache;
-  EXPECT_EQ(RawB1, &Cache.addBuffer("1", std::move(B1)));
-  EXPECT_EQ(RawB2, &Cache.addBuffer("2", std::move(B2)));
-  EXPECT_EQ(RawB3, &Cache.addBuffer("3", std::move(B3)));
-  EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
-  EXPECT_EQ(RawB2, Cache.lookupBuffer("2"));
-  EXPECT_EQ(RawB3, Cache.lookupBuffer("3"));
-  EXPECT_FALSE(Cache.isBufferFinal("1"));
-  EXPECT_FALSE(Cache.isBufferFinal("2"));
-  EXPECT_FALSE(Cache.isBufferFinal("3"));
-
-  // Remove the middle buffer.
-  EXPECT_FALSE(Cache.tryToRemoveBuffer("2"));
-  EXPECT_EQ(nullptr, Cache.lookupBuffer("2"));
-  EXPECT_FALSE(Cache.isBufferFinal("2"));
-
-  // Replace the middle buffer.
-  B2 = getBuffer(2);
-  ASSERT_NE(RawB2, B2.get());
-  RawB2 = B2.get();
-  EXPECT_EQ(RawB2, &Cache.addBuffer("2", std::move(B2)));
-
-  // Check that nothing is final.
-  EXPECT_FALSE(Cache.isBufferFinal("1"));
-  EXPECT_FALSE(Cache.isBufferFinal("2"));
-  EXPECT_FALSE(Cache.isBufferFinal("3"));
-}
-
-TEST(MemoryBufferCacheTest, finalizeCurrentBuffers) {
-  // Add a buffer.
-  MemoryBufferCache Cache;
-  auto B1 = getBuffer(1);
-  auto *RawB1 = B1.get();
-  Cache.addBuffer("1", std::move(B1));
-  ASSERT_FALSE(Cache.isBufferFinal("1"));
-
-  // Finalize it.
-  Cache.finalizeCurrentBuffers();
-  EXPECT_TRUE(Cache.isBufferFinal("1"));
-  EXPECT_TRUE(Cache.tryToRemoveBuffer("1"));
-  EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
-  EXPECT_TRUE(Cache.isBufferFinal("1"));
-
-  // Repeat.
-  auto B2 = getBuffer(2);
-  auto *RawB2 = B2.get();
-  Cache.addBuffer("2", std::move(B2));
-  EXPECT_FALSE(Cache.isBufferFinal("2"));
-
-  Cache.finalizeCurrentBuffers();
-  EXPECT_TRUE(Cache.isBufferFinal("1"));
-  EXPECT_TRUE(Cache.isBufferFinal("2"));
-  EXPECT_TRUE(Cache.tryToRemoveBuffer("1"));
-  EXPECT_TRUE(Cache.tryToRemoveBuffer("2"));
-  EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
-  EXPECT_EQ(RawB2, Cache.lookupBuffer("2"));
-  EXPECT_TRUE(Cache.isBufferFinal("1"));
-  EXPECT_TRUE(Cache.isBufferFinal("2"));
-}
-
-} // namespace