lib/Target/PTX/PTXSubtarget.cpp

   1 //===- PTXSubtarget.cpp - PTX Subtarget Information ---------------*- C++ -*-=//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file implements the PTX specific subclass of TargetSubtargetInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PTXSubtarget.h"
  15 #include "PTX.h"
  16 #include "llvm/Support/ErrorHandling.h"
  17 #include "llvm/Target/TargetRegistry.h"
  18
  19 #define GET_SUBTARGETINFO_ENUM
  20 #define GET_SUBTARGETINFO_MC_DESC
  21 #define GET_SUBTARGETINFO_TARGET_DESC
  22 #define GET_SUBTARGETINFO_CTOR
  23 #include "PTXGenSubtargetInfo.inc"
  24
  25 using namespace llvm;
  26
  27 PTXSubtarget::PTXSubtarget(const std::string &TT, const std::string &CPU,
  28                            const std::string &FS, bool is64Bit)
  29   : PTXGenSubtargetInfo(TT, CPU, FS),
  30     PTXTarget(PTX_COMPUTE_1_0),
  31     PTXVersion(PTX_VERSION_2_0),
  32     SupportsDouble(false),
  33     SupportsFMA(true),
  34     Is64Bit(is64Bit) {
  35   std::string TARGET = CPU;
  36   if (TARGET.empty())
  37     TARGET = "generic";
  38   ParseSubtargetFeatures(TARGET, FS);
  39 }
  40
  41 std::string PTXSubtarget::getTargetString() const {
  42   switch(PTXTarget) {
  43     default: llvm_unreachable("Unknown PTX target");
  44     case PTX_SM_1_0: return "sm_10";
  45     case PTX_SM_1_1: return "sm_11";
  46     case PTX_SM_1_2: return "sm_12";
  47     case PTX_SM_1_3: return "sm_13";
  48     case PTX_SM_2_0: return "sm_20";
  49     case PTX_SM_2_1: return "sm_21";
  50     case PTX_SM_2_2: return "sm_22";
  51     case PTX_SM_2_3: return "sm_23";
  52     case PTX_COMPUTE_1_0: return "compute_10";
  53     case PTX_COMPUTE_1_1: return "compute_11";
  54     case PTX_COMPUTE_1_2: return "compute_12";
  55     case PTX_COMPUTE_1_3: return "compute_13";
  56     case PTX_COMPUTE_2_0: return "compute_20";
  57   }
  58 }
  59
  60 std::string PTXSubtarget::getPTXVersionString() const {
  61   switch(PTXVersion) {
  62     default: llvm_unreachable("Unknown PTX version");
  63     case PTX_VERSION_2_0: return "2.0";
  64     case PTX_VERSION_2_1: return "2.1";
  65     case PTX_VERSION_2_2: return "2.2";
  66     case PTX_VERSION_2_3: return "2.3";
  67   }
  68 }
  69
  70
  71 MCSubtargetInfo *createPTXMCSubtargetInfo(StringRef TT, StringRef CPU,
  72                                             StringRef FS) {
  73   MCSubtargetInfo *X = new MCSubtargetInfo();
  74   InitPTXMCSubtargetInfo(X, CPU, FS);
  75   return X;
  76 }
  77
  78 extern "C" void LLVMInitializePTXMCSubtargetInfo() {
  79   TargetRegistry::RegisterMCSubtargetInfo(ThePTX32Target,
  80                                           createPTXMCSubtargetInfo);
  81   TargetRegistry::RegisterMCSubtargetInfo(ThePTX64Target,
  82                                           createPTXMCSubtargetInfo);
  83 }