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
20 using namespace llvm;
21
22 // Select Driver Interface
23 #include "llvm/Support/CommandLine.h"
24 namespace {
25 cl::opt<NVPTX::DrvInterface>
26 DriverInterface(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
NVPTXSubtarget(const std::string & TT,const std::string & CPU,const std::string & FS,bool is64Bit)35 NVPTXSubtarget::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