[SPARC] Don't compare arch name as a string, use the enum instead.

Fixes PR22695

llvm-svn: 244221
diff --git a/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp b/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
index fc56bf9..bba5c5e 100644
--- a/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
+++ b/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
@@ -77,7 +77,7 @@
   bool parseDirectiveWord(unsigned Size, SMLoc L);
 
   bool is64Bit() const {
-    return STI.getTargetTriple().getArchName().startswith("sparcv9");
+    return STI.getTargetTriple().getArch() == Triple::sparcv9;
   }
 
   void expandSET(MCInst &Inst, SMLoc IDLoc,