begining alpha subtarget support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23531 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Alpha/AlphaSubtarget.cpp

@@ -0,0 +1,28 @@
+//===- 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"
+
+using namespace llvm;
+
+//"alphaev67-unknown-linux-gnu"
+
+AlphaSubtarget::AlphaSubtarget(const Module &M, const std::string &FS)
+  :HasF2I(false), HasCT(false)
+{
+//TODO: figure out host
+}