+++ /dev/null
-//===- ARM64MachineFuctionInfo.h - ARM64 machine function info --*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file declares ARM64-specific per-machine-function information.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef ARM64MACHINEFUNCTIONINFO_H
-#define ARM64MACHINEFUNCTIONINFO_H
-
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/MC/MCLinkerOptimizationHint.h"
-
-namespace llvm {
-
-/// ARM64FunctionInfo - This class is derived from MachineFunctionInfo and
-/// contains private ARM64-specific information for each MachineFunction.
-class ARM64FunctionInfo : public MachineFunctionInfo {
-
- /// Number of bytes of arguments this function has on the stack. If the callee
- /// is expected to restore the argument stack this should be a multiple of 16,
- /// all usable during a tail call.
- ///
- /// The alternative would forbid tail call optimisation in some cases: if we
- /// want to transfer control from a function with 8-bytes of stack-argument
- /// space to a function with 16-bytes then misalignment of this value would
- /// make a stack adjustment necessary, which could not be undone by the
- /// callee.
- unsigned BytesInStackArgArea;
-
- /// The number of bytes to restore to deallocate space for incoming
- /// arguments. Canonically 0 in the C calling convention, but non-zero when
- /// callee is expected to pop the args.
- unsigned ArgumentStackToRestore;
-
- /// HasStackFrame - True if this function has a stack frame. Set by
- /// processFunctionBeforeCalleeSavedScan().
- bool HasStackFrame;
-
- /// \brief Amount of stack frame size, not including callee-saved registers.
- unsigned LocalStackSize;
-
- /// \brief Number of TLS accesses using the special (combinable)
- /// _TLS_MODULE_BASE_ symbol.
- unsigned NumLocalDynamicTLSAccesses;
-
- /// \brief FrameIndex for start of varargs area for arguments passed on the
- /// stack.
- int VarArgsStackIndex;
-
- /// \brief FrameIndex for start of varargs area for arguments passed in
- /// general purpose registers.
- int VarArgsGPRIndex;
-
- /// \brief Size of the varargs area for arguments passed in general purpose
- /// registers.
- unsigned VarArgsGPRSize;
-
- /// \brief FrameIndex for start of varargs area for arguments passed in
- /// floating-point registers.
- int VarArgsFPRIndex;
-
- /// \brief Size of the varargs area for arguments passed in floating-point
- /// registers.
- unsigned VarArgsFPRSize;
-
-public:
- ARM64FunctionInfo()
- : BytesInStackArgArea(0), ArgumentStackToRestore(0), HasStackFrame(false),
- NumLocalDynamicTLSAccesses(0), VarArgsStackIndex(0), VarArgsGPRIndex(0),
- VarArgsGPRSize(0), VarArgsFPRIndex(0), VarArgsFPRSize(0) {}
-
- explicit ARM64FunctionInfo(MachineFunction &MF)
- : BytesInStackArgArea(0), ArgumentStackToRestore(0), HasStackFrame(false),
- NumLocalDynamicTLSAccesses(0), VarArgsStackIndex(0), VarArgsGPRIndex(0),
- VarArgsGPRSize(0), VarArgsFPRIndex(0), VarArgsFPRSize(0) {
- (void)MF;
- }
-
- unsigned getBytesInStackArgArea() const { return BytesInStackArgArea; }
- void setBytesInStackArgArea(unsigned bytes) { BytesInStackArgArea = bytes; }
-
- unsigned getArgumentStackToRestore() const { return ArgumentStackToRestore; }
- void setArgumentStackToRestore(unsigned bytes) {
- ArgumentStackToRestore = bytes;
- }
-
- bool hasStackFrame() const { return HasStackFrame; }
- void setHasStackFrame(bool s) { HasStackFrame = s; }
-
- void setLocalStackSize(unsigned Size) { LocalStackSize = Size; }
- unsigned getLocalStackSize() const { return LocalStackSize; }
-
- void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamicTLSAccesses; }
- unsigned getNumLocalDynamicTLSAccesses() const {
- return NumLocalDynamicTLSAccesses;
- }
-
- int getVarArgsStackIndex() const { return VarArgsStackIndex; }
- void setVarArgsStackIndex(int Index) { VarArgsStackIndex = Index; }
-
- int getVarArgsGPRIndex() const { return VarArgsGPRIndex; }
- void setVarArgsGPRIndex(int Index) { VarArgsGPRIndex = Index; }
-
- unsigned getVarArgsGPRSize() const { return VarArgsGPRSize; }
- void setVarArgsGPRSize(unsigned Size) { VarArgsGPRSize = Size; }
-
- int getVarArgsFPRIndex() const { return VarArgsFPRIndex; }
- void setVarArgsFPRIndex(int Index) { VarArgsFPRIndex = Index; }
-
- unsigned getVarArgsFPRSize() const { return VarArgsFPRSize; }
- void setVarArgsFPRSize(unsigned Size) { VarArgsFPRSize = Size; }
-
- typedef SmallPtrSet<const MachineInstr *, 16> SetOfInstructions;
-
- const SetOfInstructions &getLOHRelated() const { return LOHRelated; }
-
- // Shortcuts for LOH related types.
- class MILOHDirective {
- MCLOHType Kind;
-
- /// Arguments of this directive. Order matters.
- SmallVector<const MachineInstr *, 3> Args;
-
- public:
- typedef SmallVectorImpl<const MachineInstr *> LOHArgs;
-
- MILOHDirective(MCLOHType Kind, const LOHArgs &Args)
- : Kind(Kind), Args(Args.begin(), Args.end()) {
- assert(isValidMCLOHType(Kind) && "Invalid LOH directive type!");
- }
-
- MCLOHType getKind() const { return Kind; }
- const LOHArgs &getArgs() const { return Args; }
- };
-
- typedef MILOHDirective::LOHArgs MILOHArgs;
- typedef SmallVector<MILOHDirective, 32> MILOHContainer;
-
- const MILOHContainer &getLOHContainer() const { return LOHContainerSet; }
-
- /// Add a LOH directive of this @p Kind and this @p Args.
- void addLOHDirective(MCLOHType Kind, const MILOHArgs &Args) {
- LOHContainerSet.push_back(MILOHDirective(Kind, Args));
- LOHRelated.insert(Args.begin(), Args.end());
- }
-
-private:
- // Hold the lists of LOHs.
- MILOHContainer LOHContainerSet;
- SetOfInstructions LOHRelated;
-};
-} // End llvm namespace
-
-#endif // ARM64MACHINEFUNCTIONINFO_H
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