Add a pointer to the owning LLVMContext to Module.  This requires threading LLVMContext through a lot
of the bitcode reader and ASM parser APIs, as well as supporting it in all of the tools.

Patches for Clang and LLVM-GCC to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74614 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-extract/llvm-extract.cpp b/tools/llvm-extract/llvm-extract.cpp
index 46840f2..a977211 100644
--- a/tools/llvm-extract/llvm-extract.cpp
+++ b/tools/llvm-extract/llvm-extract.cpp
@@ -12,6 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/LLVMContext.h"
 #include "llvm/Module.h"
 #include "llvm/PassManager.h"
 #include "llvm/Bitcode/ReaderWriter.h"
@@ -60,7 +61,8 @@
   // Print a stack trace if we signal out.
   sys::PrintStackTraceOnErrorSignal();
   PrettyStackTraceProgram X(argc, argv);
-  
+
+  LLVMContext Context;
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
   cl::ParseCommandLineOptions(argc, argv, "llvm extractor\n");
 
@@ -71,7 +73,7 @@
     cerr << argv[0] << ": Error reading file '" + InputFilename + "'\n";
     return 1;
   } else {
-    M.reset(ParseBitcodeFile(Buffer));
+    M.reset(ParseBitcodeFile(Buffer, &Context));
   }
   delete Buffer;