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Current Path: /usr/src/contrib/llvm-project/llvm/lib/Target/Mips

usr / src / contrib / llvm-project / llvm / lib / Target / Mips /

📁 ..
📁 AsmParser
📁 Disassembler
📁 MCTargetDesc
📄 MSA.txt(3.64 KB)
📄 MicroMips32r6InstrFormats.td(20.42 KB)
📄 MicroMips32r6InstrInfo.td(86.7 KB)
📄 MicroMipsDSPInstrFormats.td(6.55 KB)
📄 MicroMipsDSPInstrInfo.td(33.92 KB)
📄 MicroMipsInstrFPU.td(20.28 KB)
📄 MicroMipsInstrFormats.td(19.75 KB)
📄 MicroMipsInstrInfo.td(63.12 KB)
📄 MicroMipsSizeReduction.cpp(26.44 KB)
📄 Mips.h(1.85 KB)
📄 Mips.td(13.99 KB)
📄 Mips16FrameLowering.cpp(6.34 KB)
📄 Mips16FrameLowering.h(1.73 KB)
📄 Mips16HardFloat.cpp(15.87 KB)
📄 Mips16HardFloatInfo.cpp(1.45 KB)
📄 Mips16HardFloatInfo.h(1.33 KB)
📄 Mips16ISelDAGToDAG.cpp(7.33 KB)
📄 Mips16ISelDAGToDAG.h(1.8 KB)
📄 Mips16ISelLowering.cpp(29.05 KB)
📄 Mips16ISelLowering.h(3.29 KB)
📄 Mips16InstrFormats.td(16.29 KB)
📄 Mips16InstrInfo.cpp(17.93 KB)
📄 Mips16InstrInfo.h(5.33 KB)
📄 Mips16InstrInfo.td(51.26 KB)
📄 Mips16RegisterInfo.cpp(4.81 KB)
📄 Mips16RegisterInfo.h(1.56 KB)
📄 Mips32r6InstrFormats.td(14.85 KB)
📄 Mips32r6InstrInfo.td(47.55 KB)
📄 Mips64InstrInfo.td(58.62 KB)
📄 Mips64r6InstrInfo.td(15.93 KB)
📄 MipsAnalyzeImmediate.cpp(4.62 KB)
📄 MipsAnalyzeImmediate.h(2.24 KB)
📄 MipsAsmPrinter.cpp(43.89 KB)
📄 MipsAsmPrinter.h(6.04 KB)
📄 MipsBranchExpansion.cpp(29.72 KB)
📄 MipsCCState.cpp(6.71 KB)
📄 MipsCCState.h(6.14 KB)
📄 MipsCallLowering.cpp(23.62 KB)
📄 MipsCallLowering.h(3.35 KB)
📄 MipsCallingConv.td(17.55 KB)
📄 MipsCondMov.td(14.56 KB)
📄 MipsConstantIslandPass.cpp(62.17 KB)
📄 MipsDSPInstrFormats.td(7.39 KB)
📄 MipsDSPInstrInfo.td(68.68 KB)
📄 MipsDelaySlotFiller.cpp(32.55 KB)
📄 MipsEVAInstrFormats.td(2.51 KB)
📄 MipsEVAInstrInfo.td(8.52 KB)
📄 MipsExpandPseudo.cpp(30.1 KB)
📄 MipsFastISel.cpp(66.8 KB)
📄 MipsFrameLowering.cpp(5.75 KB)
📄 MipsFrameLowering.h(1.74 KB)
📄 MipsISelDAGToDAG.cpp(10.22 KB)
📄 MipsISelDAGToDAG.h(6.13 KB)
📄 MipsISelLowering.cpp(192.31 KB)
📄 MipsISelLowering.h(27.02 KB)
📄 MipsInstrFPU.td(44.82 KB)
📄 MipsInstrFormats.td(19.73 KB)
📄 MipsInstrInfo.cpp(28.1 KB)
📄 MipsInstrInfo.h(7.87 KB)
📄 MipsInstrInfo.td(138.02 KB)
📄 MipsInstructionSelector.cpp(34.44 KB)
📄 MipsLegalizerInfo.cpp(21.07 KB)
📄 MipsLegalizerInfo.h(1.19 KB)
📄 MipsMCInstLower.cpp(9.68 KB)
📄 MipsMCInstLower.h(1.77 KB)
📄 MipsMSAInstrFormats.td(9.18 KB)
📄 MipsMSAInstrInfo.td(182.92 KB)
📄 MipsMTInstrFormats.td(2.44 KB)
📄 MipsMTInstrInfo.td(7.59 KB)
📄 MipsMachineFunction.cpp(7.22 KB)
📄 MipsMachineFunction.h(4.37 KB)
📄 MipsModuleISelDAGToDAG.cpp(1.67 KB)
📄 MipsOptimizePICCall.cpp(9.78 KB)
📄 MipsOptionRecord.h(2.9 KB)
📄 MipsOs16.cpp(4.18 KB)
📄 MipsPfmCounters.td(706 B)
📄 MipsPreLegalizerCombiner.cpp(3.93 KB)
📄 MipsRegisterBankInfo.cpp(26.01 KB)
📄 MipsRegisterBankInfo.h(9.13 KB)
📄 MipsRegisterBanks.td(573 B)
📄 MipsRegisterInfo.cpp(10.41 KB)
📄 MipsRegisterInfo.h(2.82 KB)
📄 MipsRegisterInfo.td(23.18 KB)
📄 MipsSEFrameLowering.cpp(34.47 KB)
📄 MipsSEFrameLowering.h(1.88 KB)
📄 MipsSEISelDAGToDAG.cpp(49.41 KB)
📄 MipsSEISelDAGToDAG.h(5.92 KB)
📄 MipsSEISelLowering.cpp(140.76 KB)
📄 MipsSEISelLowering.h(6.25 KB)
📄 MipsSEInstrInfo.cpp(34.71 KB)
📄 MipsSEInstrInfo.h(5.34 KB)
📄 MipsSERegisterInfo.cpp(8.44 KB)
📄 MipsSERegisterInfo.h(1.2 KB)
📄 MipsSchedule.td(38.24 KB)
📄 MipsScheduleGeneric.td(71.71 KB)
📄 MipsScheduleP5600.td(27.85 KB)
📄 MipsSubtarget.cpp(10.72 KB)
📄 MipsSubtarget.h(13.43 KB)
📄 MipsTargetMachine.cpp(12.66 KB)
📄 MipsTargetMachine.h(3.08 KB)
📄 MipsTargetObjectFile.cpp(7.39 KB)
📄 MipsTargetObjectFile.h(2.02 KB)
📄 MipsTargetStreamer.h(14.58 KB)
📄 Relocation.txt(3.91 KB)
📁 TargetInfo

Editing: MipsOs16.cpp

//===---- MipsOs16.cpp for Mips Option -Os16                       --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines an optimization phase for the MIPS target.
//
//===----------------------------------------------------------------------===//

#include "Mips.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

using namespace llvm;

#define DEBUG_TYPE "mips-os16"

static cl::opt<std::string> Mips32FunctionMask(
  "mips32-function-mask",
  cl::init(""),
  cl::desc("Force function to be mips32"),
  cl::Hidden);

namespace {
  class MipsOs16 : public ModulePass {
  public:
    static char ID;

MipsOs16() : ModulePass(ID) {}

StringRef getPassName() const override { return "MIPS Os16 Optimization"; }

bool runOnModule(Module &M) override;
  };

char MipsOs16::ID = 0;
}

// Figure out if we need float point based on the function signature.
// We need to move variables in and/or out of floating point
// registers because of the ABI
//
static  bool needsFPFromSig(Function &F) {
  Type* RetType = F.getReturnType();
  switch (RetType->getTypeID()) {
  case Type::FloatTyID:
  case Type::DoubleTyID:
    return true;
  default:
    ;
  }
  if (F.arg_size() >=1) {
    Argument &Arg = *F.arg_begin();
    switch (Arg.getType()->getTypeID()) {
    case Type::FloatTyID:
    case Type::DoubleTyID:
      return true;
    default:
      ;
    }
  }
  return false;
}

// Figure out if the function will need floating point operations
//
static bool needsFP(Function &F) {
  if (needsFPFromSig(F))
    return true;
  for (Function::const_iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
    for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
         I != E; ++I) {
      const Instruction &Inst = *I;
      switch (Inst.getOpcode()) {
      case Instruction::FAdd:
      case Instruction::FSub:
      case Instruction::FMul:
      case Instruction::FDiv:
      case Instruction::FRem:
      case Instruction::FPToUI:
      case Instruction::FPToSI:
      case Instruction::UIToFP:
      case Instruction::SIToFP:
      case Instruction::FPTrunc:
      case Instruction::FPExt:
      case Instruction::FCmp:
        return true;
      default:
        ;
      }
      if (const CallInst *CI = dyn_cast<CallInst>(I)) {
        LLVM_DEBUG(dbgs() << "Working on call"
                          << "\n");
        Function &F_ =  *CI->getCalledFunction();
        if (needsFPFromSig(F_))
          return true;
      }
    }
  return false;
}

bool MipsOs16::runOnModule(Module &M) {
  bool usingMask = Mips32FunctionMask.length() > 0;
  bool doneUsingMask = false; // this will make it stop repeating

LLVM_DEBUG(dbgs() << "Run on Module MipsOs16 \n"
                    << Mips32FunctionMask << "\n");
  if (usingMask)
    LLVM_DEBUG(dbgs() << "using mask \n" << Mips32FunctionMask << "\n");

unsigned int functionIndex = 0;
  bool modified = false;

for (auto &F : M) {
    if (F.isDeclaration())
      continue;

LLVM_DEBUG(dbgs() << "Working on " << F.getName() << "\n");
    if (usingMask) {
      if (!doneUsingMask) {
        if (functionIndex == Mips32FunctionMask.length())
          functionIndex = 0;
        switch (Mips32FunctionMask[functionIndex]) {
        case '1':
          LLVM_DEBUG(dbgs() << "mask forced mips32: " << F.getName() << "\n");
          F.addFnAttr("nomips16");
          break;
        case '.':
          doneUsingMask = true;
          break;
        default:
          break;
        }
        functionIndex++;
      }
    }
    else {
      if (needsFP(F)) {
        LLVM_DEBUG(dbgs() << "os16 forced mips32: " << F.getName() << "\n");
        F.addFnAttr("nomips16");
      }
      else {
        LLVM_DEBUG(dbgs() << "os16 forced mips16: " << F.getName() << "\n");
        F.addFnAttr("mips16");
      }
    }
  }

return modified;
}

ModulePass *llvm::createMipsOs16Pass() { return new MipsOs16(); }

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Editing: MipsOs16.cpp

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