Don't allow 32-bit only instructions to be disassembled in 64-bit mode. Fixes part of PR10700.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140370 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/X86DisassemblerTables.h b/utils/TableGen/X86DisassemblerTables.h
index d16ebfc..ae126be 100644
--- a/utils/TableGen/X86DisassemblerTables.h
+++ b/utils/TableGen/X86DisassemblerTables.h
@@ -260,11 +260,13 @@
   /// @param filter       - The ModRMFilter that decides which ModR/M byte values
   ///                       correspond to the desired instruction.
   /// @param uid          - The unique ID of the instruction.
+  /// @param is32bit      - Instructon is only 32-bit
   void setTableFields(OpcodeType type,
                       InstructionContext insnContext,
                       uint8_t opcode,
                       const ModRMFilter &filter,
-                      InstrUID uid);  
+                      InstrUID uid,
+                      bool is32bit);  
   
   /// specForUID - Returns the instruction specifier for a given unique
   ///   instruction ID.  Used when resolving collisions.