diff --git a/llvm/utils/TableGen/X86RecognizableInstr.cpp b/llvm/utils/TableGen/X86RecognizableInstr.cpp
--- a/llvm/utils/TableGen/X86RecognizableInstr.cpp
+++ b/llvm/utils/TableGen/X86RecognizableInstr.cpp
@@ -840,7 +840,7 @@
 
     uint8_t currentOpcode;
 
-    for (currentOpcode = opcodeToSet; currentOpcode < opcodeToSet + Count;
+    for (currentOpcode = opcodeToSet; currentOpcode < (uint8_t)(opcodeToSet + Count);
          ++currentOpcode)
       tables.setTableFields(*opcodeType, insnContext(), currentOpcode, *filter,
                             UID, Is32Bit, OpPrefix == 0,