[LoongArch] Simplify RISCVSubtarget. NFC

The flags, initialization of the flags, and the getter methods for
features defined in LoongArch.td can be generated by TableGen.

Author: heiher

llvm/lib/Target/LoongArch/LoongArchSubtarget.h

@@ -31,21 +31,11 @@ class StringRef;
 
 class LoongArchSubtarget : public LoongArchGenSubtargetInfo {
   virtual void anchor();
-  bool HasLA32 = false;
-  bool HasLA64 = false;
-  bool HasBasicF = false;
-  bool HasBasicD = false;
-  bool HasExtLSX = false;
-  bool HasExtLASX = false;
-  bool HasExtLVZ = false;
-  bool HasExtLBT = false;
-  bool HasLaGlobalWithPcrel = false;
-  bool HasLaGlobalWithAbs = false;
-  bool HasLaLocalWithAbs = false;
-  bool HasUAL = false;
-  bool HasLinkerRelax = false;
-  bool HasExpAutoVec = false;
-  bool HasFrecipe = false;
+
+#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \
+  bool ATTRIBUTE = DEFAULT;
+#include "LoongArchGenSubtargetInfo.inc"
+
   unsigned GRLen = 32;
   MVT GRLenVT = MVT::i32;
   LoongArchABI::ABI TargetABI = LoongArchABI::ABI_Unknown;
@@ -92,20 +82,12 @@ class LoongArchSubtarget : public LoongArchGenSubtargetInfo {
   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
     return &TSInfo;
   }
+
+#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \
+  bool GETTER() const { return ATTRIBUTE; }
+#include "LoongArchGenSubtargetInfo.inc"
+
   bool is64Bit() const { return HasLA64; }
-  bool hasBasicF() const { return HasBasicF; }
-  bool hasBasicD() const { return HasBasicD; }
-  bool hasExtLSX() const { return HasExtLSX; }
-  bool hasExtLASX() const { return HasExtLASX; }
-  bool hasExtLVZ() const { return HasExtLVZ; }
-  bool hasExtLBT() const { return HasExtLBT; }
-  bool hasLaGlobalWithPcrel() const { return HasLaGlobalWithPcrel; }
-  bool hasLaGlobalWithAbs() const { return HasLaGlobalWithAbs; }
-  bool hasLaLocalWithAbs() const { return HasLaLocalWithAbs; }
-  bool hasUAL() const { return HasUAL; }
-  bool hasLinkerRelax() const { return HasLinkerRelax; }
-  bool hasExpAutoVec() const { return HasExpAutoVec; }
-  bool hasFrecipe() const { return HasFrecipe; }
   MVT getGRLenVT() const { return GRLenVT; }
   unsigned getGRLen() const { return GRLen; }
   LoongArchABI::ABI getTargetABI() const { return TargetABI; }