Use Triple::isMIPS() instead of enumerating all Triples. NFC

Reviewed By: atanasyan

Differential Revision: https://reviews.llvm.org/D48549

llvm-svn: 335495
diff --git a/clang/lib/Basic/Targets/Mips.h b/clang/lib/Basic/Targets/Mips.h
index ff9e790..11e9ac9 100644
--- a/clang/lib/Basic/Targets/Mips.h
+++ b/clang/lib/Basic/Targets/Mips.h
@@ -69,10 +69,7 @@
         UseIndirectJumpHazard(false), HasFP64(false) {
     TheCXXABI.set(TargetCXXABI::GenericMIPS);
 
-    setABI((getTriple().getArch() == llvm::Triple::mips ||
-            getTriple().getArch() == llvm::Triple::mipsel)
-               ? "o32"
-               : "n64");
+    setABI(getTriple().isMIPS32() ? "o32" : "n64");
 
     CPU = ABI == "o32" ? "mips32r2" : "mips64r2";