Fix disassembling of reverse register/register forms of ADD/SUB/XOR/OR/AND/SBB/ADC/CMP/MOV.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/X86RecognizableInstr.cpp b/utils/TableGen/X86RecognizableInstr.cpp
index f43a939..23c0fa8 100644
--- a/utils/TableGen/X86RecognizableInstr.cpp
+++ b/utils/TableGen/X86RecognizableInstr.cpp
@@ -345,7 +345,7 @@
     return FILTER_STRONG;
   
   if (Form == X86Local::Pseudo ||
-      IsCodeGenOnly)
+      (IsCodeGenOnly && Name.find("_REV") == Name.npos))
     return FILTER_STRONG;
   
   if (Form == X86Local::MRMInitReg)