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 TargetSubtargetInfo. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "MipsSubtarget.h" 15 #include "Mips.h" 16 #include "llvm/Support/TargetRegistry.h" 17 18 #define GET_SUBTARGETINFO_TARGET_DESC 19 #define GET_SUBTARGETINFO_CTOR 20 #include "MipsGenSubtargetInfo.inc" 21 22 using namespace llvm; 23 24 MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU, 25 const std::string &FS, bool little) : 26 MipsGenSubtargetInfo(TT, CPU, FS), 27 MipsArchVersion(Mips32), MipsABI(UnknownABI), IsLittle(little), 28 IsSingleFloat(false), IsFP64bit(false), IsGP64bit(false), HasVFPU(false), 29 IsLinux(true), HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false), 30 HasMinMax(false), HasSwap(false), HasBitCount(false) 31 { 32 std::string CPUName = CPU; 33 if (CPUName.empty()) 34 CPUName = "mips32r1"; 35 36 // Parse features string. 37 ParseSubtargetFeatures(CPUName, FS); 38 39 // Initialize scheduling itinerary for the specified CPU. 40 InstrItins = getInstrItineraryForCPU(CPUName); 41 42 // Set MipsABI if it hasn't been set yet. 43 if (MipsABI == UnknownABI) 44 MipsABI = hasMips64() ? N64 : O32; 45 46 // Check if Architecture and ABI are compatible. 47 assert(((!hasMips64() && (isABI_O32() || isABI_EABI())) || 48 (hasMips64() && (isABI_N32() || isABI_N64()))) && 49 "Invalid Arch & ABI pair."); 50 51 // Is the target system Linux ? 52 if (TT.find("linux") == std::string::npos) 53 IsLinux = false; 54 } 55
