Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/lib/Target/SystemZ/SystemZCallingConv.h

@@ -1,130 +0,0 @@
-//===-- SystemZCallingConv.h - Calling conventions for SystemZ --*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#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, 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;
-}
-
-} // end namespace llvm
-
-#endif