[mips] Make MipsSubtarget::hasMips*() functions consistent. NFC.

[vmedic]

LGTM

lib/Target/Mips/MipsSubtarget.h

 
 class MipsTargetMachine;
 
 class MipsSubtarget : public MipsGenSubtargetInfo {
   virtual void anchor();
 
   enum MipsArchEnum {
     MipsDefault,
-    Mips1, Mips2, Mips32, Mips32r2, Mips32r6, Mips3, Mips4, Mips5, Mips64,
-    Mips64r2, Mips64r6
+    Mips1, Mips2, Mips32, Mips32r2, Mips32r6, Mips32Max, Mips3, Mips4, Mips5,
+    Mips64, Mips64r2, Mips64r6
   };
 
   // Mips architecture version
   MipsArchEnum MipsArchVersion;
 
   // IsLittle - The target is Little Endian
   bool IsLittle;
 
public:
   bool hasMips1() const { return MipsArchVersion >= Mips1; }
   bool hasMips2() const { return MipsArchVersion >= Mips2; }
   bool hasMips3() const { return MipsArchVersion >= Mips3; }
   bool hasMips4() const { return MipsArchVersion >= Mips4; }
   bool hasMips5() const { return MipsArchVersion >= Mips5; }
   bool hasMips4_32() const { return HasMips4_32; }
   bool hasMips4_32r2() const { return HasMips4_32r2; }
   bool hasMips32() const {
-    return MipsArchVersion >= Mips32 && MipsArchVersion != Mips3 &&
-           MipsArchVersion != Mips4 && MipsArchVersion != Mips5;
+    return (MipsArchVersion >= Mips32 && MipsArchVersion < Mips32Max) ||
+           hasMips64();
   }
   bool hasMips32r2() const {
-    return MipsArchVersion == Mips32r2 || MipsArchVersion == Mips32r6 ||
-           MipsArchVersion == Mips64r2 || MipsArchVersion == Mips64r6;
+    return (MipsArchVersion >= Mips32r2 && MipsArchVersion < Mips32Max) ||
+           hasMips64r2();
   }
   bool hasMips32r6() const {
-    return MipsArchVersion == Mips32r6 || MipsArchVersion == Mips64r6;
+    return (MipsArchVersion >= Mips32r6 && MipsArchVersion < Mips32Max) ||
+           hasMips64r6();
   }
   bool hasMips64() const { return MipsArchVersion >= Mips64; }
-  bool hasMips64r2() const {
-    return MipsArchVersion == Mips64r2 || MipsArchVersion == Mips64r6;
-  }
-  bool hasMips64r6() const { return MipsArchVersion == Mips64r6; }
+  bool hasMips64r2() const { return MipsArchVersion >= Mips64r2; }
+  bool hasMips64r6() const { return MipsArchVersion >= Mips64r6; }
 
   bool hasCnMips() const { return HasCnMips; }
 
   bool isLittle() const { return IsLittle; }
   bool isABICalls() const { return !NoABICalls; }
   bool isFPXX() const { return IsFPXX; }
   bool isFP64bit() const { return IsFP64bit; }
   bool useOddSPReg() const { return UseOddSPReg; }