[RISCV] Rename variable CPUModel to Model

The variable name can't be the same as the struct name or we will
have "error: declaration of ‘llvm::RISCV::CPUModel llvm::RISCV::CPUInfo::CPUModel’
changes meaning of ‘CPUModel’ [-fpermissive]".

Author: wangpc-pp

clang/lib/CodeGen/CGBuiltin.cpp

@@ -22715,22 +22715,22 @@ Value *CodeGenFunction::EmitRISCVCpuIs(StringRef CPUStr) {
     return CPUID;
   };
 
-  const llvm::RISCV::CPUModel CPUModel = llvm::RISCV::getCPUModel(CPUStr);
+  const llvm::RISCV::CPUModel Model = llvm::RISCV::getCPUModel(CPUStr);
 
   // Compare mvendorid.
   Value *VendorID = loadRISCVCPUID(0);
   Value *Result =
-      Builder.CreateICmpEQ(VendorID, Builder.getInt32(CPUModel.MVendorID));
+      Builder.CreateICmpEQ(VendorID, Builder.getInt32(Model.MVendorID));
 
   // Compare marchid.
   Value *ArchID = loadRISCVCPUID(1);
   Result = Builder.CreateAnd(
-      Result, Builder.CreateICmpEQ(ArchID, Builder.getInt64(CPUModel.MArchID)));
+      Result, Builder.CreateICmpEQ(ArchID, Builder.getInt64(Model.MArchID)));
 
   // Compare mimpid.
   Value *ImpID = loadRISCVCPUID(2);
   Result = Builder.CreateAnd(
-      Result, Builder.CreateICmpEQ(ImpID, Builder.getInt64(CPUModel.MImpID)));
+      Result, Builder.CreateICmpEQ(ImpID, Builder.getInt64(Model.MImpID)));
 
   return Result;
 }

llvm/include/llvm/TargetParser/RISCVTargetParser.h

@@ -43,7 +43,7 @@ struct CPUInfo {
   StringLiteral DefaultMarch;
   bool FastScalarUnalignedAccess;
   bool FastVectorUnalignedAccess;
-  CPUModel CPUModel;
+  CPUModel Model;
   bool is64Bit() const { return DefaultMarch.starts_with("rv64"); }
 };
 

llvm/lib/TargetParser/RISCVTargetParser.cpp

@@ -58,16 +58,15 @@ bool hasFastVectorUnalignedAccess(StringRef CPU) {
 }
 
 bool hasValidCPUModel(StringRef CPU) {
-  const CPUModel CPUModel = getCPUModel(CPU);
-  return CPUModel.MVendorID != 0 && CPUModel.MArchID != 0 &&
-         CPUModel.MImpID != 0;
+  const CPUModel Model = getCPUModel(CPU);
+  return Model.MVendorID != 0 && Model.MArchID != 0 && Model.MImpID != 0;
 }
 
 CPUModel getCPUModel(StringRef CPU) {
   const CPUInfo *Info = getCPUInfoByName(CPU);
   if (!Info)
     return {0, 0, 0};
-  return Info->CPUModel;
+  return Info->Model;
 }
 
 bool parseCPU(StringRef CPU, bool IsRV64) {