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 16 using namespace llvm; 17 18 #define DEBUG_TYPE "nvptx-subtarget" 19 20 #define GET_SUBTARGETINFO_ENUM 21 #define GET_SUBTARGETINFO_TARGET_DESC 22 #define GET_SUBTARGETINFO_CTOR 23 #include "NVPTXGenSubtargetInfo.inc" 24 25 // Pin the vtable to this file. 26 void NVPTXSubtarget::anchor() {} 27 28 static std::string computeDataLayout(bool is64Bit) { 29 std::string Ret = "e"; 30 31 if (!is64Bit) 32 Ret += "-p:32:32"; 33 34 Ret += "-i64:64-v16:16-v32:32-n16:32:64"; 35 36 return Ret; 37 } 38 39 NVPTXSubtarget &NVPTXSubtarget::initializeSubtargetDependencies(StringRef CPU, 40 StringRef FS) { 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; 45 46 ParseSubtargetFeatures(TargetName, FS); 47 48 // Set default to PTX 3.2 (CUDA 5.5) 49 if (PTXVersion == 0) { 50 PTXVersion = 32; 51 } 52 53 return *this; 54 } 55 56 NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU, 57 const std::string &FS, const TargetMachine &TM, 58 bool is64Bit) 59 : NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0), 60 SmVersion(20), DL(computeDataLayout(is64Bit)), 61 InstrInfo(initializeSubtargetDependencies(CPU, FS)), 62 TLInfo((NVPTXTargetMachine &)TM), TSInfo(&DL), FrameLowering(*this) { 63 64 Triple T(TT); 65 66 if (T.getOS() == Triple::NVCL) 67 drvInterface = NVPTX::NVCL; 68 else 69 drvInterface = NVPTX::CUDA; 70 } 71
