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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() {}
static std::string computeDataLayout(bool is64Bit) {
std::string Ret = "e";
if (!is64Bit)
Ret += "-p:32:32";
Ret += "-i64:64-v16:16-v32:32-n16:32:64";
return Ret;
}
NVPTXSubtarget &NVPTXSubtarget::initializeSubtargetDependencies(StringRef CPU,
StringRef FS) {
// Provide the default CPU if we don't have one.
if (CPU.empty() && FS.size())
llvm_unreachable("we are not using FeatureStr");
TargetName = CPU.empty() ? "sm_20" : CPU;
ParseSubtargetFeatures(TargetName, FS);
// 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;
return *this;
}
NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
const std::string &FS, const TargetMachine &TM,
bool is64Bit)
: NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0),
SmVersion(20), DL(computeDataLayout(is64Bit)),
InstrInfo(initializeSubtargetDependencies(CPU, FS)),
TLInfo((NVPTXTargetMachine &)TM), TSInfo(&DL), FrameLowering(*this) {
Triple T(TT);
if (T.getOS() == Triple::NVCL)
drvInterface = NVPTX::NVCL;
else
drvInterface = NVPTX::CUDA;
}
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