1 //===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the NVPTX specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #include "NVPTXSubtarget.h"
18 #define DEBUG_TYPE "nvptx-subtarget"
20 #define GET_SUBTARGETINFO_ENUM
21 #define GET_SUBTARGETINFO_TARGET_DESC
22 #define GET_SUBTARGETINFO_CTOR
23 #include "NVPTXGenSubtargetInfo.inc"
25 // Pin the vtable to this file.
26 void NVPTXSubtarget::anchor() {}
28 static std::string computeDataLayout(bool is64Bit) {
29 std::string Ret = "e";
34 Ret += "-i64:64-v16:16-v32:32-n16:32:64";
39 NVPTXSubtarget &NVPTXSubtarget::initializeSubtargetDependencies(StringRef CPU,
41 // Provide the default CPU if we don't have one.
42 if (CPU.empty() && FS.size())
43 llvm_unreachable("we are not using FeatureStr");
44 TargetName = CPU.empty() ? "sm_20" : CPU;
46 ParseSubtargetFeatures(TargetName, FS);
48 // Set default to PTX 3.2 (CUDA 5.5)
49 if (PTXVersion == 0) {
56 NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
57 const std::string &FS, const TargetMachine &TM,
59 : NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0),
60 SmVersion(20), DL(computeDataLayout(is64Bit)),
61 InstrInfo(initializeSubtargetDependencies(CPU, FS)),
62 TLInfo((const NVPTXTargetMachine &)TM), TSInfo(&DL),
63 FrameLowering(*this) {
67 if (T.getOS() == Triple::NVCL)
68 drvInterface = NVPTX::NVCL;
70 drvInterface = NVPTX::CUDA;