Added the darwin .secure_log_unique and .secure_log_reset directives.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107077 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 53ffc94..2044a93 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -27,6 +27,10 @@
   MachOUniquingMap = 0;
   ELFUniquingMap = 0;
   COFFUniquingMap = 0;
+
+  SecureLogFile = getenv("AS_SECURE_LOG_FILE");
+  SecureLog = 0;
+  SecureLogUsed = false;
 }
 
 MCContext::~MCContext() {
@@ -37,6 +41,9 @@
   delete (MachOUniqueMapTy*)MachOUniquingMap;
   delete (ELFUniqueMapTy*)ELFUniquingMap;
   delete (COFFUniqueMapTy*)COFFUniquingMap;
+
+  // If the stream for the .secure_log_unique directive was created free it.
+  delete (raw_ostream*)SecureLog;
 }
 
 //===----------------------------------------------------------------------===//