lib/Target/Mips/MipsSubtarget.cpp

   1 //===- MipsSubtarget.cpp - Mips 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 Mips specific subclass of TargetSubtarget.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "MipsSubtarget.h"
  15 #include "Mips.h"
  16 #include "MipsGenSubtarget.inc"
  17 using namespace llvm;
  18
  19 MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &FS,
  20                              bool little) :
  21   MipsArchVersion(Mips1), MipsABI(O32), IsLittle(little), IsSingleFloat(false),
  22   IsFP64bit(false), IsGP64bit(false), HasVFPU(false), IsLinux(true),
  23   HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false), HasMinMax(false),
  24   HasSwap(false), HasBitCount(false)
  25 {
  26   std::string CPU = "mips1";
  27   MipsArchVersion = Mips1;
  28
  29   // Parse features string.
  30   ParseSubtargetFeatures(FS, CPU);
  31
  32   // Is the target system Linux ?
  33   if (TT.find("linux") == std::string::npos)
  34     IsLinux = false;
  35
  36   // When only the target triple is specified and is
  37   // a allegrex target, set the features. We also match
  38   // big and little endian allegrex cores (dont really
  39   // know if a big one exists)
  40   if (TT.find("mipsallegrex") != std::string::npos ||
  41       TT.find("psp") != std::string::npos) {
  42     MipsABI = EABI;
  43     IsSingleFloat = true;
  44     MipsArchVersion = Mips2;
  45     HasVFPU = true; // Enables Allegrex Vector FPU (not supported yet)
  46     HasSEInReg = true;
  47     HasBitCount = true;
  48     HasSwap = true;
  49     HasCondMov = true;
  50   }
  51 }