[VE] Change default CPU name to "generic"

[kaz7]

Summary

Change default CPU name of SX-Aurora VE from "ve" to "generic" similar
to other architectures.

[simoll]

There should be test for this. You could use:

./bin/llc -march=ve --mcpu=help

[kaz7]

Update following suggestions.

llvm/lib/Target/VE/MCTargetDesc/VEMCTargetDesc.cpp

static MCRegisterInfo *createVEMCRegisterInfo(const Triple &TT) {
   MCRegisterInfo *X = new MCRegisterInfo();
   InitVEMCRegisterInfo(X, VE::SX10);
   return X;
 }
 
 static MCSubtargetInfo *createVEMCSubtargetInfo(const Triple &TT, StringRef CPU,
                                                 StringRef FS) {
   if (CPU.empty())
-    CPU = "ve";
+    CPU = "generic";
   return createVEMCSubtargetInfoImpl(TT, CPU, /*TuneCPU=*/CPU, FS);
 }
 
 static MCTargetStreamer *
 createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
   return new VETargetELFStreamer(S);
 }
 

llvm/lib/Target/VE/VE.td

 
 //===----------------------------------------------------------------------===//
 // VE processors supported.
 //===----------------------------------------------------------------------===//
 
 class Proc<string Name, list<SubtargetFeature> Features>
  : Processor<Name, NoItineraries, Features>;
 
-def : Proc<"ve",             []>;
+def : Proc<"generic", []>;
 
 //===----------------------------------------------------------------------===//
 // Declare the target which we are implementing
 //===----------------------------------------------------------------------===//
 
 def VEAsmWriter : AsmWriter {
   string AsmWriterClassName  = "InstPrinter";
   int PassSubtarget = 1;

llvm/lib/Target/VE/VESubtarget.cpp

 VESubtarget &VESubtarget::initializeSubtargetDependencies(StringRef CPU,
                                                           StringRef FS) {
   // Default feature settings
   EnableVPU = false;
 
   // Determine default and user specified characteristics
   std::string CPUName = std::string(CPU);
   if (CPUName.empty())
-    CPUName = "ve";
+    CPUName = "generic";
 
   // Parse features string.
   ParseSubtargetFeatures(CPUName, /*TuneCPU=*/CPU, FS);
 
   return *this;
 }
 
 VESubtarget::VESubtarget(const Triple &TT, const std::string &CPU,

llvm/test/CodeGen/VE/Scalar/cpu.ll

+; RUN: llc -mtriple=ve -mcpu=help < %s 2>&1 | FileCheck %s
+
+; CHECK: Available CPUs for this target:
+; CHECK-EMPTY:
+; CHECK-NEXT: generic - Select the generic processor.