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 }
53