add a bunch of mod/rm encoding types for fixed mod/rm bytes.
This will work better for the disassembler for modeling things
like lfence/monitor/vmcall etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 069d353..a0d0312 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -3556,6 +3556,14 @@
       }
     }
     break;
+    
+  case X86II::MRM_C1:
+  case X86II::MRM_C8:
+  case X86II::MRM_C9:
+  case X86II::MRM_E8:
+  case X86II::MRM_F0:
+    FinalSize += 2;
+    break;
   }
 
   case X86II::MRMInitReg: