1 //===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the NVPTX specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #include "NVPTXSubtarget.h"
15 #include "NVPTXTargetMachine.h"
19 #define DEBUG_TYPE "nvptx-subtarget"
21 #define GET_SUBTARGETINFO_ENUM
22 #define GET_SUBTARGETINFO_TARGET_DESC
23 #define GET_SUBTARGETINFO_CTOR
24 #include "NVPTXGenSubtargetInfo.inc"
26 // Pin the vtable to this file.
27 void NVPTXSubtarget::anchor() {}
29 NVPTXSubtarget &NVPTXSubtarget::initializeSubtargetDependencies(StringRef CPU,
31 // Provide the default CPU if we don't have one.
32 if (CPU.empty() && FS.size())
33 llvm_unreachable("we are not using FeatureStr");
34 TargetName = CPU.empty() ? "sm_20" : CPU;
36 ParseSubtargetFeatures(TargetName, FS);
38 // Set default to PTX 3.2 (CUDA 5.5)
39 if (PTXVersion == 0) {
46 NVPTXSubtarget::NVPTXSubtarget(const Triple &TT, const std::string &CPU,
47 const std::string &FS,
48 const NVPTXTargetMachine &TM)
49 : NVPTXGenSubtargetInfo(TargetTuple(TT), CPU, FS), PTXVersion(0),
50 SmVersion(20), TM(TM), InstrInfo(),
51 TLInfo(TM, initializeSubtargetDependencies(CPU, FS)), TSInfo(),
54 bool NVPTXSubtarget::hasImageHandles() const {
55 // Enable handles for Kepler+, where CUDA supports indirect surfaces and
57 if (TM.getDrvInterface() == NVPTX::CUDA)
58 return (SmVersion >= 30);
60 // Disabled, otherwise