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annotate lib/Target/NVPTX/NVPTXSubtarget.cpp @ 52:c22698ecb2a9

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modified CreateIdentifierInfo and create new function which was named 'CreateUniqueIdentifierInfo'.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 15 Jan 2014 21:01:33 +0900
parents 95c75e76d11b
children 54457678186b
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1 //===- NVPTXSubtarget.cpp - NVPTX Subtarget Information -------------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file implements the NVPTX specific subclass of TargetSubtarget.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "NVPTXSubtarget.h"
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15 #define GET_SUBTARGETINFO_ENUM
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16 #define GET_SUBTARGETINFO_TARGET_DESC
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17 #define GET_SUBTARGETINFO_CTOR
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18 #include "NVPTXGenSubtargetInfo.inc"
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19
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20 using namespace llvm;
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21
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22
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23 // Pin the vtable to this file.
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24 void NVPTXSubtarget::anchor() {}
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25
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26 NVPTXSubtarget::NVPTXSubtarget(const std::string &TT, const std::string &CPU,
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27 const std::string &FS, bool is64Bit)
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28 : NVPTXGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit), PTXVersion(0),
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29 SmVersion(20) {
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30
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31 Triple T(TT);
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32
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33 if (T.getOS() == Triple::NVCL)
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34 drvInterface = NVPTX::NVCL;
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35 else
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36 drvInterface = NVPTX::CUDA;
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37
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38 // Provide the default CPU if none
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39 std::string defCPU = "sm_20";
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40
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41 ParseSubtargetFeatures((CPU.empty() ? defCPU : CPU), FS);
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42
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43 // Get the TargetName from the FS if available
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44 if (FS.empty() && CPU.empty())
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45 TargetName = defCPU;
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46 else if (!CPU.empty())
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47 TargetName = CPU;
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48 else
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49 llvm_unreachable("we are not using FeatureStr");
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50
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51 // We default to PTX 3.1, but we cannot just default to it in the initializer
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52 // since the attribute parser checks if the given option is >= the default.
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53 // So if we set ptx31 as the default, the ptx30 attribute would never match.
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54 // Instead, we use 0 as the default and manually set 31 if the default is
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55 // used.
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56 if (PTXVersion == 0) {
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57 PTXVersion = 31;
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58 }
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59 }