lib/Target/Alpha/AlphaSubtarget.cpp

//===- AlphaSubtarget.cpp - Alpha Subtarget Information ---------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by Andrew Lenharth and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Alpha specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//

#include "AlphaSubtarget.h"
#include "Alpha.h"
#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/SubtargetFeature.h"
#include "AlphaGenSubtarget.inc"
using namespace llvm;


enum {
  FeatureKVSize = sizeof(FeatureKV) / sizeof(SubtargetFeatureKV),
  SubTypeKVSize = sizeof(SubTypeKV) / sizeof(SubtargetFeatureKV)
};

AlphaSubtarget::AlphaSubtarget(const Module &M, const std::string &FS)
  : HasF2I(false), HasCT(false) {
  std::string CPU = "generic";
  uint32_t Bits =
    SubtargetFeatures::Parse(FS, CPU,
                             SubTypeKV, SubTypeKVSize,
                             FeatureKV, FeatureKVSize);
  HasF2I = (Bits & FeatureFIX) != 0;
  HasCT  = (Bits & FeatureCIX) != 0;
}