AutoUpgrade: upgrade from scalar TBAA format to struct-path aware TBAA format.

We treat TBAA tags as struct-path aware TBAA format when the first operand
is a MDNode and the tag has 3 or more operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191593 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.h

@@ -144,6 +144,8 @@ class BitcodeReader : public GVMaterializer {
   std::vector<std::pair<GlobalAlias*, unsigned> > AliasInits;
   std::vector<std::pair<Function*, unsigned> > FunctionPrefixes;
 
+  SmallVector<Instruction*, 64> InstsWithTBAATag;
+
   /// MAttributes - The set of attributes by index.  Index zero in the
   /// file is for null, and is thus not represented here.  As such all indices
   /// are off by one.