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 #include "llvm/Support/CommandLine.h"
  18 using namespace llvm;
  19
  20 MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &FS,
  21                              bool little) :
  22   MipsArchVersion(Mips1), MipsABI(O32), IsLittle(little), IsSingleFloat(false),
  23   IsFP64bit(false), IsGP64bit(false), HasVFPU(false), IsLinux(true),
  24   HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false), HasMinMax(false),
  25   HasSwap(false), HasBitCount(false)
  26 {
  27   std::string CPU = "mips1";
  28   MipsArchVersion = Mips1;
  29
  30   // Parse features string.
  31   ParseSubtargetFeatures(FS, CPU);
  32
  33   // Is the target system Linux ?
  34   if (TT.find("linux") == std::string::npos)
  35     IsLinux = false;
  36
  37   // When only the target triple is specified and is
  38   // a allegrex target, set the features. We also match
  39   // big and little endian allegrex cores (dont really
  40   // know if a big one exists)
  41   if (TT.find("mipsallegrex") != std::string::npos ||
  42       TT.find("psp") != std::string::npos) {
  43     MipsABI = EABI;
  44     IsSingleFloat = true;
  45     MipsArchVersion = Mips2;
  46     HasVFPU = true; // Enables Allegrex Vector FPU (not supported yet)
  47     HasSEInReg = true;
  48     HasBitCount = true;
  49     HasSwap = true;
  50     HasCondMov = true;
  51   }
  52 }