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 16using 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. 26void NVPTXSubtarget::anchor() {} 27 28static 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 39NVPTXSubtarget &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 56NVPTXSubtarget::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