Improve disabling of X86 AsmMatcher.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78381 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 5b554ca8..c8d5dda 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -432,6 +432,7 @@
   
 bool X86ATTAsmParser::MatchRegisterName(const StringRef &Name,
                                         unsigned &RegNo) {
+  RegNo = 1;
   return false;
 }