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

📁 ..
📁 AsmParser
📁 Disassembler
📁 MCTargetDesc
📄 README.txt(3.94 KB)
📄 SystemZ.h(8.19 KB)
📄 SystemZ.td(2.86 KB)
📄 SystemZAsmPrinter.cpp(23.49 KB)
📄 SystemZAsmPrinter.h(1.88 KB)
📄 SystemZCallingConv.cpp(710 B)
📄 SystemZCallingConv.h(4.89 KB)
📄 SystemZCallingConv.td(6.99 KB)
📄 SystemZConstantPoolValue.cpp(1.78 KB)
📄 SystemZConstantPoolValue.h(1.75 KB)
📄 SystemZCopyPhysRegs.cpp(3.82 KB)
📄 SystemZElimCompare.cpp(26.21 KB)
📄 SystemZFeatures.td(12.3 KB)
📄 SystemZFrameLowering.cpp(29.88 KB)
📄 SystemZFrameLowering.h(3.02 KB)
📄 SystemZHazardRecognizer.cpp(14.75 KB)
📄 SystemZHazardRecognizer.h(5.86 KB)
📄 SystemZISelDAGToDAG.cpp(68.74 KB)
📄 SystemZISelLowering.cpp(321.22 KB)
📄 SystemZISelLowering.h(28.44 KB)
📄 SystemZInstrBuilder.h(1.63 KB)
📄 SystemZInstrDFP.td(9.3 KB)
📄 SystemZInstrFP.td(26.21 KB)
📄 SystemZInstrFormats.td(182.82 KB)
📄 SystemZInstrHFP.td(9.46 KB)
📄 SystemZInstrInfo.cpp(69.75 KB)
📄 SystemZInstrInfo.h(14.6 KB)
📄 SystemZInstrInfo.td(103.17 KB)
📄 SystemZInstrSystem.td(17.18 KB)
📄 SystemZInstrVector.td(84.36 KB)
📄 SystemZLDCleanup.cpp(4.91 KB)
📄 SystemZLongBranch.cpp(16.04 KB)
📄 SystemZMCInstLower.cpp(3.16 KB)
📄 SystemZMCInstLower.h(1.28 KB)
📄 SystemZMachineFunctionInfo.cpp(508 B)
📄 SystemZMachineFunctionInfo.h(3.77 KB)
📄 SystemZMachineScheduler.cpp(8.76 KB)
📄 SystemZMachineScheduler.h(5.05 KB)
📄 SystemZOperands.td(24.89 KB)
📄 SystemZOperators.td(48.97 KB)
📄 SystemZPatterns.td(8.52 KB)
📄 SystemZPostRewrite.cpp(10.33 KB)
📄 SystemZProcessors.td(1.78 KB)
📄 SystemZRegisterInfo.cpp(16.27 KB)
📄 SystemZRegisterInfo.h(3.52 KB)
📄 SystemZRegisterInfo.td(12.04 KB)
📄 SystemZSchedule.td(2.1 KB)
📄 SystemZScheduleZ13.td(72.43 KB)
📄 SystemZScheduleZ14.td(78.06 KB)
📄 SystemZScheduleZ15.td(80.69 KB)
📄 SystemZScheduleZ196.td(55.68 KB)
📄 SystemZScheduleZEC12.td(57.44 KB)
📄 SystemZSelectionDAGInfo.cpp(12.92 KB)
📄 SystemZSelectionDAGInfo.h(3.15 KB)
📄 SystemZShortenInst.cpp(12 KB)
📄 SystemZSubtarget.cpp(3.67 KB)
📄 SystemZSubtarget.h(9.14 KB)
📄 SystemZTDC.cpp(13.52 KB)
📄 SystemZTargetMachine.cpp(11.58 KB)
📄 SystemZTargetMachine.h(2.09 KB)
📄 SystemZTargetTransformInfo.cpp(43.51 KB)
📄 SystemZTargetTransformInfo.h(4.88 KB)
📁 TargetInfo

Editing: SystemZCallingConv.h

//===-- SystemZCallingConv.h - Calling conventions for SystemZ --*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCALLINGCONV_H
#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCALLINGCONV_H

#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/MC/MCRegisterInfo.h"

namespace llvm {
namespace SystemZ {
  const unsigned NumArgGPRs = 5;
  extern const MCPhysReg ArgGPRs[NumArgGPRs];

const unsigned NumArgFPRs = 4;
  extern const MCPhysReg ArgFPRs[NumArgFPRs];
} // end namespace SystemZ

class SystemZCCState : public CCState {
private:
  /// Records whether the value was a fixed argument.
  /// See ISD::OutputArg::IsFixed.
  SmallVector<bool, 4> ArgIsFixed;

/// Records whether the value was widened from a short vector type.
  SmallVector<bool, 4> ArgIsShortVector;

// Check whether ArgVT is a short vector type.
  bool IsShortVectorType(EVT ArgVT) {
    return ArgVT.isVector() && ArgVT.getStoreSize() <= 8;
  }

public:
  SystemZCCState(CallingConv::ID CC, bool isVarArg, MachineFunction &MF,
                 SmallVectorImpl<CCValAssign> &locs, LLVMContext &C)
      : CCState(CC, isVarArg, MF, locs, C) {}

void AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
                              CCAssignFn Fn) {
    // Formal arguments are always fixed.
    ArgIsFixed.clear();
    for (unsigned i = 0; i < Ins.size(); ++i)
      ArgIsFixed.push_back(true);
    // Record whether the call operand was a short vector.
    ArgIsShortVector.clear();
    for (unsigned i = 0; i < Ins.size(); ++i)
      ArgIsShortVector.push_back(IsShortVectorType(Ins[i].ArgVT));

CCState::AnalyzeFormalArguments(Ins, Fn);
  }

void AnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
                           CCAssignFn Fn) {
    // Record whether the call operand was a fixed argument.
    ArgIsFixed.clear();
    for (unsigned i = 0; i < Outs.size(); ++i)
      ArgIsFixed.push_back(Outs[i].IsFixed);
    // Record whether the call operand was a short vector.
    ArgIsShortVector.clear();
    for (unsigned i = 0; i < Outs.size(); ++i)
      ArgIsShortVector.push_back(IsShortVectorType(Outs[i].ArgVT));

CCState::AnalyzeCallOperands(Outs, Fn);
  }

// This version of AnalyzeCallOperands in the base class is not usable
  // since we must provide a means of accessing ISD::OutputArg::IsFixed.
  void AnalyzeCallOperands(const SmallVectorImpl<MVT> &Outs,
                           SmallVectorImpl<ISD::ArgFlagsTy> &Flags,
                           CCAssignFn Fn) = delete;

bool IsFixed(unsigned ValNo) { return ArgIsFixed[ValNo]; }
  bool IsShortVector(unsigned ValNo) { return ArgIsShortVector[ValNo]; }
};

// Handle i128 argument types.  These need to be passed by implicit
// reference.  This could be as simple as the following .td line:
//    CCIfType<[i128], CCPassIndirect<i64>>,
// except that i128 is not a legal type, and therefore gets split by
// common code into a pair of i64 arguments.
inline bool CC_SystemZ_I128Indirect(unsigned &ValNo, MVT &ValVT,
                                    MVT &LocVT,
                                    CCValAssign::LocInfo &LocInfo,
                                    ISD::ArgFlagsTy &ArgFlags,
                                    CCState &State) {
  SmallVectorImpl<CCValAssign> &PendingMembers = State.getPendingLocs();

// ArgFlags.isSplit() is true on the first part of a i128 argument;
  // PendingMembers.empty() is false on all subsequent parts.
  if (!ArgFlags.isSplit() && PendingMembers.empty())
    return false;

// Push a pending Indirect value location for each part.
  LocVT = MVT::i64;
  LocInfo = CCValAssign::Indirect;
  PendingMembers.push_back(CCValAssign::getPending(ValNo, ValVT,
                                                   LocVT, LocInfo));
  if (!ArgFlags.isSplitEnd())
    return true;

// OK, we've collected all parts in the pending list.  Allocate
  // the location (register or stack slot) for the indirect pointer.
  // (This duplicates the usual i64 calling convention rules.)
  unsigned Reg = State.AllocateReg(SystemZ::ArgGPRs);
  unsigned Offset = Reg ? 0 : State.AllocateStack(8, Align(8));

// Use that same location for all the pending parts.
  for (auto &It : PendingMembers) {
    if (Reg)
      It.convertToReg(Reg);
    else
      It.convertToMem(Offset);
    State.addLoc(It);
  }

PendingMembers.clear();

return true;
}

inline bool CC_SystemZ_GHC_Error(unsigned &, MVT &, MVT &,
                                 CCValAssign::LocInfo &, ISD::ArgFlagsTy &,
                                 CCState &) {
  report_fatal_error("No registers left in GHC calling convention");
  return false;
}

} // end namespace llvm

#endif

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Editing: SystemZCallingConv.h

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