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📁 ..
📁 AsmParser
📁 Disassembler
📁 MCTargetDesc
📄 P9InstrResources.td(37.36 KB)
📄 PPC.h(4.69 KB)
📄 PPC.td(32.37 KB)
📄 PPCAsmPrinter.cpp(70.77 KB)
📄 PPCBoolRetToInt.cpp(9.97 KB)
📄 PPCBranchCoalescing.cpp(30.16 KB)
📄 PPCBranchSelector.cpp(15.97 KB)
📄 PPCCCState.cpp(1.08 KB)
📄 PPCCCState.h(1.19 KB)
📄 PPCCTRLoops.cpp(6.68 KB)
📄 PPCCallingConv.cpp(6.19 KB)
📄 PPCCallingConv.h(1.97 KB)
📄 PPCCallingConv.td(16.32 KB)
📄 PPCEarlyReturn.cpp(7.14 KB)
📄 PPCExpandISEL.cpp(17.93 KB)
📄 PPCFastISel.cpp(85.51 KB)
📄 PPCFrameLowering.cpp(98.6 KB)
📄 PPCFrameLowering.h(7.46 KB)
📄 PPCHazardRecognizers.cpp(14.02 KB)
📄 PPCHazardRecognizers.h(3.83 KB)
📄 PPCISelDAGToDAG.cpp(256.88 KB)
📄 PPCISelLowering.cpp(669.73 KB)
📄 PPCISelLowering.h(55.9 KB)
📄 PPCInstr64Bit.td(75.68 KB)
📄 PPCInstrAltivec.td(77.68 KB)
📄 PPCInstrBuilder.h(1.5 KB)
📄 PPCInstrFormats.td(57.38 KB)
📄 PPCInstrHTM.td(5.48 KB)
📄 PPCInstrInfo.cpp(171.06 KB)
📄 PPCInstrInfo.h(29.06 KB)
📄 PPCInstrInfo.td(233.39 KB)
📄 PPCInstrPrefix.td(41.72 KB)
📄 PPCInstrQPX.td(57.56 KB)
📄 PPCInstrSPE.td(49.71 KB)
📄 PPCInstrVSX.td(223.48 KB)
📄 PPCLoopInstrFormPrep.cpp(33.45 KB)
📄 PPCLowerMASSVEntries.cpp(6.42 KB)
📄 PPCMCInstLower.cpp(6.62 KB)
📄 PPCMIPeephole.cpp(63.48 KB)
📄 PPCMachineFunctionInfo.cpp(2.59 KB)
📄 PPCMachineFunctionInfo.h(9.15 KB)
📄 PPCMachineScheduler.cpp(4.03 KB)
📄 PPCMachineScheduler.h(1.81 KB)
📄 PPCMacroFusion.cpp(6.68 KB)
📄 PPCMacroFusion.def(1.8 KB)
📄 PPCMacroFusion.h(886 B)
📄 PPCPerfectShuffle.h(397.57 KB)
📄 PPCPfmCounters.td(705 B)
📄 PPCPreEmitPeephole.cpp(13.36 KB)
📄 PPCQPXLoadSplat.cpp(5.31 KB)
📄 PPCReduceCRLogicals.cpp(28.66 KB)
📄 PPCRegisterInfo.cpp(51.93 KB)
📄 PPCRegisterInfo.h(6.61 KB)
📄 PPCRegisterInfo.td(14.24 KB)
📄 PPCSchedule.td(5.21 KB)
📄 PPCSchedule440.td(34.57 KB)
📄 PPCScheduleA2.td(7.85 KB)
📄 PPCScheduleE500.td(16.59 KB)
📄 PPCScheduleE500mc.td(20.89 KB)
📄 PPCScheduleE5500.td(23.62 KB)
📄 PPCScheduleG3.td(4.49 KB)
📄 PPCScheduleG4.td(5.42 KB)
📄 PPCScheduleG4Plus.td(6.45 KB)
📄 PPCScheduleG5.td(7.1 KB)
📄 PPCScheduleP7.td(22.26 KB)
📄 PPCScheduleP8.td(23.96 KB)
📄 PPCScheduleP9.td(12.27 KB)
📄 PPCSubtarget.cpp(7.58 KB)
📄 PPCSubtarget.h(13.21 KB)
📄 PPCTLSDynamicCall.cpp(6.53 KB)
📄 PPCTOCRegDeps.cpp(5.3 KB)
📄 PPCTargetMachine.cpp(18.94 KB)
📄 PPCTargetMachine.h(2.2 KB)
📄 PPCTargetObjectFile.cpp(2.45 KB)
📄 PPCTargetObjectFile.h(1.19 KB)
📄 PPCTargetStreamer.h(1.02 KB)
📄 PPCTargetTransformInfo.cpp(38.72 KB)
📄 PPCTargetTransformInfo.h(5.6 KB)
📄 PPCVSXCopy.cpp(5.68 KB)
📄 PPCVSXFMAMutate.cpp(15.12 KB)
📄 PPCVSXSwapRemoval.cpp(36.78 KB)
📄 README_P9.txt(22.25 KB)
📁 TargetInfo

Editing: PPCVSXCopy.cpp

//===-------------- PPCVSXCopy.cpp - VSX Copy Legalization ----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// A pass which deals with the complexity of generating legal VSX register
// copies to/from register classes which partially overlap with the VSX
// register file.
//
//===----------------------------------------------------------------------===//

#include "MCTargetDesc/PPCPredicates.h"
#include "PPC.h"
#include "PPCHazardRecognizers.h"
#include "PPCInstrBuilder.h"
#include "PPCInstrInfo.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"

using namespace llvm;

#define DEBUG_TYPE "ppc-vsx-copy"

namespace {
  // PPCVSXCopy pass - For copies between VSX registers and non-VSX registers
  // (Altivec and scalar floating-point registers), we need to transform the
  // copies into subregister copies with other restrictions.
  struct PPCVSXCopy : public MachineFunctionPass {
    static char ID;
    PPCVSXCopy() : MachineFunctionPass(ID) {
      initializePPCVSXCopyPass(*PassRegistry::getPassRegistry());
    }

const TargetInstrInfo *TII;

bool IsRegInClass(unsigned Reg, const TargetRegisterClass *RC,
                      MachineRegisterInfo &MRI) {
      if (Register::isVirtualRegister(Reg)) {
        return RC->hasSubClassEq(MRI.getRegClass(Reg));
      } else if (RC->contains(Reg)) {
        return true;
      }

return false;
    }

bool IsVSReg(unsigned Reg, MachineRegisterInfo &MRI) {
      return IsRegInClass(Reg, &PPC::VSRCRegClass, MRI);
    }

bool IsVRReg(unsigned Reg, MachineRegisterInfo &MRI) {
      return IsRegInClass(Reg, &PPC::VRRCRegClass, MRI);
    }

bool IsF8Reg(unsigned Reg, MachineRegisterInfo &MRI) {
      return IsRegInClass(Reg, &PPC::F8RCRegClass, MRI);
    }

bool IsVSFReg(unsigned Reg, MachineRegisterInfo &MRI) {
      return IsRegInClass(Reg, &PPC::VSFRCRegClass, MRI);
    }

bool IsVSSReg(unsigned Reg, MachineRegisterInfo &MRI) {
      return IsRegInClass(Reg, &PPC::VSSRCRegClass, MRI);
    }

protected:
    bool processBlock(MachineBasicBlock &MBB) {
      bool Changed = false;

MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
      for (MachineInstr &MI : MBB) {
        if (!MI.isFullCopy())
          continue;

MachineOperand &DstMO = MI.getOperand(0);
        MachineOperand &SrcMO = MI.getOperand(1);

if ( IsVSReg(DstMO.getReg(), MRI) &&
            !IsVSReg(SrcMO.getReg(), MRI)) {
          // This is a copy *to* a VSX register from a non-VSX register.
          Changed = true;

const TargetRegisterClass *SrcRC = &PPC::VSLRCRegClass;
          assert((IsF8Reg(SrcMO.getReg(), MRI) ||
                  IsVSSReg(SrcMO.getReg(), MRI) ||
                  IsVSFReg(SrcMO.getReg(), MRI)) &&
                 "Unknown source for a VSX copy");

Register NewVReg = MRI.createVirtualRegister(SrcRC);
          BuildMI(MBB, MI, MI.getDebugLoc(),
                  TII->get(TargetOpcode::SUBREG_TO_REG), NewVReg)
              .addImm(1) // add 1, not 0, because there is no implicit clearing
                         // of the high bits.
              .add(SrcMO)
              .addImm(PPC::sub_64);

// The source of the original copy is now the new virtual register.
          SrcMO.setReg(NewVReg);
        } else if (!IsVSReg(DstMO.getReg(), MRI) &&
                    IsVSReg(SrcMO.getReg(), MRI)) {
          // This is a copy *from* a VSX register to a non-VSX register.
          Changed = true;

const TargetRegisterClass *DstRC = &PPC::VSLRCRegClass;
          assert((IsF8Reg(DstMO.getReg(), MRI) ||
                  IsVSFReg(DstMO.getReg(), MRI) ||
                  IsVSSReg(DstMO.getReg(), MRI)) &&
                 "Unknown destination for a VSX copy");

// Copy the VSX value into a new VSX register of the correct subclass.
          Register NewVReg = MRI.createVirtualRegister(DstRC);
          BuildMI(MBB, MI, MI.getDebugLoc(), TII->get(TargetOpcode::COPY),
                  NewVReg)
              .add(SrcMO);

// Transform the original copy into a subregister extraction copy.
          SrcMO.setReg(NewVReg);
          SrcMO.setSubReg(PPC::sub_64);
        }
      }

return Changed;
    }

public:
    bool runOnMachineFunction(MachineFunction &MF) override {
      // If we don't have VSX on the subtarget, don't do anything.
      const PPCSubtarget &STI = MF.getSubtarget<PPCSubtarget>();
      if (!STI.hasVSX())
        return false;
      TII = STI.getInstrInfo();

bool Changed = false;

for (MachineFunction::iterator I = MF.begin(); I != MF.end();) {
        MachineBasicBlock &B = *I++;
        if (processBlock(B))
          Changed = true;
      }

return Changed;
    }

void getAnalysisUsage(AnalysisUsage &AU) const override {
      MachineFunctionPass::getAnalysisUsage(AU);
    }
  };
}

INITIALIZE_PASS(PPCVSXCopy, DEBUG_TYPE,
                "PowerPC VSX Copy Legalization", false, false)

char PPCVSXCopy::ID = 0;
FunctionPass*
llvm::createPPCVSXCopyPass() { return new PPCVSXCopy(); }

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Editing: PPCVSXCopy.cpp

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