1//===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the NVPTX specific subclass of TargetSubtarget.
11//
12//===----------------------------------------------------------------------===//
13
14#include "NVPTXSubtarget.h"
15#define GET_SUBTARGETINFO_ENUM
16#define GET_SUBTARGETINFO_TARGET_DESC
17#define GET_SUBTARGETINFO_CTOR
18#include "NVPTXGenSubtargetInfo.inc"
19
20using namespace llvm;
21
22// Select Driver Interface
23#include "llvm/Support/CommandLine.h"
24namespace {
25cl::opt<NVPTX::DrvInterface>
26DriverInterface(cl::desc("Choose driver interface:"),
27                cl::values(
28                    clEnumValN(NVPTX::NVCL, "drvnvcl", "Nvidia OpenCL driver"),
29                    clEnumValN(NVPTX::CUDA, "drvcuda", "Nvidia CUDA driver"),
30                    clEnumValN(NVPTX::TEST, "drvtest", "Plain Test"),
31                    clEnumValEnd),
32                    cl::init(NVPTX::NVCL));
33}
34
35NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
36                               const std::string &FS, bool is64Bit)
37:NVPTXGenSubtargetInfo(TT, "", FS), // Don't pass CPU to subtarget,
38 // because we don't register all
39 // nvptx targets.
40 Is64Bit(is64Bit) {
41
42  drvInterface = DriverInterface;
43
44  // Provide the default CPU if none
45  std::string defCPU = "sm_10";
46
47  // Get the TargetName from the FS if available
48  if (FS.empty() && CPU.empty())
49    TargetName = defCPU;
50  else if (!CPU.empty())
51    TargetName = CPU;
52  else
53    llvm_unreachable("we are not using FeatureStr");
54
55  // Set up the SmVersion
56  SmVersion = atoi(TargetName.c_str()+3);
57}
58