Revert s/Raw/getBitMask/g name change. This is possibly causing LTO test hangings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172020 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index 59cda22..3bd64a9 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -477,7 +477,7 @@
       for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
         Attribute ReconstitutedAttr =
           Attribute::decodeLLVMAttributesForBitcode(Context, Record[i+1]);
-        Record[i+1] = ReconstitutedAttr.getBitMask();
+        Record[i+1] = ReconstitutedAttr.Raw();
       }
 
       for (unsigned i = 0, e = Record.size(); i != e; i += 2) {