Revert "[Option] Store arg strings in a set backed by a BumpPtrAllocator"

This broke clang's crash-report.c test, and I haven't been able to
figure it out yet.

This reverts commit r186319.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186329 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 3 deletions

diff --git a/include/llvm/Option/ArgList.h b/include/llvm/Option/ArgList.h
index 2f4d852..06ba679 100644
--- a/include/llvm/Option/ArgList.h
+++ b/include/llvm/Option/ArgList.h
@@ -12,10 +12,9 @@
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/StringSet.h"
 #include "llvm/Option/OptSpecifier.h"
 #include "llvm/Option/Option.h"
-#include "llvm/Support/Allocator.h"
+#include <list>
 #include <string>
 #include <vector>
 
@@ -299,7 +298,7 @@ private:
   /// This is mutable since we treat the ArgList as being the list
   /// of Args, and allow routines to add new strings (to have a
   /// convenient place to store the memory) via MakeIndex.
-  mutable StringSet<BumpPtrAllocator> SynthesizedStrings;
+  mutable std::list<std::string> SynthesizedStrings;
 
   /// The number of original input argument strings.
   unsigned NumInputArgStrings;