pass stringref by value instead of by const&
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95627 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index b5e5f8b..10b00d5 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -67,7 +67,7 @@
/// @name Auto-generated Match Functions
/// {
-static unsigned MatchRegisterName(const StringRef &Name);
+static unsigned MatchRegisterName(StringRef Name);
/// }
@@ -291,6 +291,7 @@
// FIXME: Validate register for the current architecture; we have to do
// validation later, so maybe there is no need for this here.
RegNo = MatchRegisterName(Tok.getString());
+
if (RegNo == 0)
return Error(Tok.getLoc(), "invalid register name");