r234184 - Prefer uninitialized memory for scratch space.

[Benjamin Kramer]

Author: d0k
Date: Mon Apr  6 12:45:11 2015
New Revision: 234184

URL: http://llvm.org/viewvc/llvm-project?rev=234184&view=rev
Log:
Prefer uninitialized memory for scratch space.

No functional change intended.

Modified:
    cfe/trunk/lib/Basic/SourceManager.cpp
    cfe/trunk/lib/Lex/ScratchBuffer.cpp

Modified: cfe/trunk/lib/Basic/SourceManager.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/SourceManager.cpp?rev=234184&r1=234183&r2=234184&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/SourceManager.cpp (original)
+++ cfe/trunk/lib/Basic/SourceManager.cpp Mon Apr  6 12:45:11 2015
@@ -110,8 +110,8 @@ llvm::MemoryBuffer *ContentCache::getBuf
   // possible.
   if (!BufferOrError) {
     StringRef FillStr("<<<MISSING SOURCE FILE>>>\n");
-    Buffer.setPointer(MemoryBuffer::getNewMemBuffer(ContentsEntry->getSize(),
-                                                    "<invalid>").release());
+    Buffer.setPointer(MemoryBuffer::getNewUninitMemBuffer(
+                          ContentsEntry->getSize(), "<invalid>").release());
     char *Ptr = const_cast<char*>(Buffer.getPointer()->getBufferStart());
     for (unsigned i = 0, e = ContentsEntry->getSize(); i != e; ++i)
       Ptr[i] = FillStr[i % FillStr.size()];

Modified: cfe/trunk/lib/Lex/ScratchBuffer.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/ScratchBuffer.cpp?rev=234184&r1=234183&r2=234184&view=diff
==============================================================================
--- cfe/trunk/lib/Lex/ScratchBuffer.cpp (original)
+++ cfe/trunk/lib/Lex/ScratchBuffer.cpp Mon Apr  6 12:45:11 2015
@@ -65,7 +65,7 @@ void ScratchBuffer::AllocScratchBuffer(u
     RequestLen = ScratchBufSize;
 
   std::unique_ptr<llvm::MemoryBuffer> OwnBuf =
-      llvm::MemoryBuffer::getNewMemBuffer(RequestLen, "<scratch space>");
+      llvm::MemoryBuffer::getNewUninitMemBuffer(RequestLen, "<scratch space>");
   llvm::MemoryBuffer &Buf = *OwnBuf;
   FileID FID = SourceMgr.createFileID(std::move(OwnBuf));
   BufferStartLoc = SourceMgr.getLocForStartOfFile(FID);