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 #define GET_SUBTARGETINFO_ENUM
16 #define GET_SUBTARGETINFO_TARGET_DESC
17 #define GET_SUBTARGETINFO_CTOR
18 #include "NVPTXGenSubtargetInfo.inc"
23 // Pin the vtable to this file.
24 void NVPTXSubtarget::anchor() {}
26 NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
27 const std::string &FS, bool is64Bit)
28 : NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0),
33 if (T.getOS() == Triple::NVCL)
34 drvInterface = NVPTX::NVCL;
36 drvInterface = NVPTX::CUDA;
38 // Provide the default CPU if none
39 std::string defCPU = "sm_20";
41 ParseSubtargetFeatures((CPU.empty() ? defCPU : CPU), FS);
43 // Get the TargetName from the FS if available
44 if (FS.empty() && CPU.empty())
46 else if (!CPU.empty())
49 llvm_unreachable("we are not using FeatureStr");
51 // We default to PTX 3.1, but we cannot just default to it in the initializer
52 // since the attribute parser checks if the given option is >= the default.
53 // So if we set ptx31 as the default, the ptx30 attribute would never match.
54 // Instead, we use 0 as the default and manually set 31 if the default is
56 if (PTXVersion == 0) {