69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
|
//===- 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"
|
||
|
|
#include "NVPTXTargetMachine.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"
|
||
|
|
|
||
|
|
static cl::opt<bool>
|
||
|
|
NoF16Math("nvptx-no-f16-math", cl::ZeroOrMore, cl::Hidden,
|
||
|
|
cl::desc("NVPTX Specific: Disable generation of f16 math ops."),
|
||
|
|
cl::init(false));
|
||
|
|
|
||
|
|
// Pin the vtable to this file.
|
||
|
|
void NVPTXSubtarget::anchor() {}
|
||
|
|
|
||
|
|
NVPTXSubtarget &NVPTXSubtarget::initializeSubtargetDependencies(StringRef CPU,
|
||
|
|
StringRef FS) {
|
||
|
|
// Provide the default CPU if we don't have one.
|
||
|
|
TargetName = CPU.empty() ? "sm_20" : CPU;
|
||
|
|
|
||
|
|
ParseSubtargetFeatures(TargetName, FS);
|
||
|
|
|
||
|
|
// Set default to PTX 3.2 (CUDA 5.5)
|
||
|
|
if (PTXVersion == 0) {
|
||
|
|
PTXVersion = 32;
|
||
|
|
}
|
||
|
|
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
NVPTXSubtarget::NVPTXSubtarget(const Triple &TT, const std::string &CPU,
|
||
|
|
const std::string &FS,
|
||
|
|
const NVPTXTargetMachine &TM)
|
||
|
|
: NVPTXGenSubtargetInfo(TT, CPU, FS), PTXVersion(0), SmVersion(20), TM(TM),
|
||
|
|
InstrInfo(), TLInfo(TM, initializeSubtargetDependencies(CPU, FS)),
|
||
|
|
FrameLowering() {}
|
||
|
|
|
||
|
|
bool NVPTXSubtarget::hasImageHandles() const {
|
||
|
|
// Enable handles for Kepler+, where CUDA supports indirect surfaces and
|
||
|
|
// textures
|
||
|
|
if (TM.getDrvInterface() == NVPTX::CUDA)
|
||
|
|
return (SmVersion >= 30);
|
||
|
|
|
||
|
|
// Disabled, otherwise
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool NVPTXSubtarget::allowFP16Math() const {
|
||
|
|
return hasFP16Math() && NoF16Math == false;
|
||
|
|
}
|