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//===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the NVPTX specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#include "NVPTXSubtarget.h"
using namespace llvm;
#define DEBUG_TYPE "nvptx-subtarget"
#define GET_SUBTARGETINFO_ENUM
#define GET_SUBTARGETINFO_TARGET_DESC
#define GET_SUBTARGETINFO_CTOR
#include "NVPTXGenSubtargetInfo.inc"
// Pin the vtable to this file.
void NVPTXSubtarget::anchor() {}
NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
const std::string &FS, bool is64Bit)
: NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0),
SmVersion(20) {
Triple T(TT);
if (T.getOS() == Triple::NVCL)
drvInterface = NVPTX::NVCL;
else
drvInterface = NVPTX::CUDA;
// Provide the default CPU if none
std::string defCPU = "sm_20";
ParseSubtargetFeatures((CPU.empty() ? defCPU : CPU), FS);
// Get the TargetName from the FS if available
if (FS.empty() && CPU.empty())
TargetName = defCPU;
else if (!CPU.empty())
TargetName = CPU;
else
llvm_unreachable("we are not using FeatureStr");
// We default to PTX 3.1, but we cannot just default to it in the initializer
// since the attribute parser checks if the given option is >= the default.
// So if we set ptx31 as the default, the ptx30 attribute would never match.
// Instead, we use 0 as the default and manually set 31 if the default is
// used.
if (PTXVersion == 0) {
PTXVersion = 31;
}
}
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