-//====- X86MachineFuctionInfo.h - X86 machine function info -----*- C++ -*-===//
-//
+//===-- X86MachineFunctionInfo.h - X86 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 X86-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//
-#ifndef X86MACHINEFUNCTIONINFO_H
-#define X86MACHINEFUNCTIONINFO_H
+#ifndef LLVM_LIB_TARGET_X86_X86MACHINEFUNCTIONINFO_H
+#define LLVM_LIB_TARGET_X86_X86MACHINEFUNCTIONINFO_H
+#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineValueType.h"
+#include <vector>
namespace llvm {
-enum NameDecorationStyle {
- None,
- StdCall,
- FastCall
-};
-
-/// X86MachineFunctionInfo - This class is derived from MachineFunction private
-/// X86 target-specific information for each MachineFunction.
+/// X86MachineFunctionInfo - This class is derived from MachineFunction and
+/// contains private X86 target-specific information for each MachineFunction.
class X86MachineFunctionInfo : public MachineFunctionInfo {
+ virtual void anchor();
+
/// ForceFramePointer - True if the function is required to use of frame
- /// pointer for reasons other than it containing dynamic allocation or
+ /// pointer for reasons other than it containing dynamic allocation or
/// that FP eliminatation is turned off. For example, Cygwin main function
/// contains stack pointer re-alignment code which requires FP.
- bool ForceFramePointer;
+ bool ForceFramePointer = false;
+
+ /// RestoreBasePointerOffset - Non-zero if the function has base pointer
+ /// and makes call to llvm.eh.sjlj.setjmp. When non-zero, the value is a
+ /// displacement from the frame pointer to a slot where the base pointer
+ /// is stashed.
+ signed char RestoreBasePointerOffset = 0;
/// CalleeSavedFrameSize - Size of the callee-saved register portion of the
/// stack frame in bytes.
- unsigned CalleeSavedFrameSize;
+ unsigned CalleeSavedFrameSize = 0;
- /// BytesToPopOnReturn - Number of bytes function pops on return.
+ /// BytesToPopOnReturn - Number of bytes function pops on return (in addition
+ /// to the space used by the return address).
/// Used on windows platform for stdcall & fastcall name decoration
- unsigned BytesToPopOnReturn;
-
- /// DecorationStyle - If the function requires additional name decoration,
- /// DecorationStyle holds the right way to do so.
- NameDecorationStyle DecorationStyle;
+ unsigned BytesToPopOnReturn = 0;
/// ReturnAddrIndex - FrameIndex for return slot.
- int ReturnAddrIndex;
-
- /// TailCallReturnAddrDelta - Delta the ReturnAddr stack slot is moved
- /// Used for creating an area before the register spill area on the stack
- /// the returnaddr can be savely move to this area
- int TailCallReturnAddrDelta;
+ int ReturnAddrIndex = 0;
+
+ /// \brief FrameIndex for return slot.
+ int FrameAddrIndex = 0;
+
+ /// TailCallReturnAddrDelta - The number of bytes by which return address
+ /// stack slot is moved as the result of tail call optimization.
+ int TailCallReturnAddrDelta = 0;
+
+ /// SRetReturnReg - Some subtargets require that sret lowering includes
+ /// returning the value of the returned struct in a register. This field
+ /// holds the virtual register into which the sret argument is passed.
+ unsigned SRetReturnReg = 0;
+
+ /// GlobalBaseReg - keeps track of the virtual register initialized for
+ /// use as the global base register. This is used for PIC in some PIC
+ /// relocation models.
+ unsigned GlobalBaseReg = 0;
+
+ /// VarArgsFrameIndex - FrameIndex for start of varargs area.
+ int VarArgsFrameIndex = 0;
+ /// RegSaveFrameIndex - X86-64 vararg func register save area.
+ int RegSaveFrameIndex = 0;
+ /// VarArgsGPOffset - X86-64 vararg func int reg offset.
+ unsigned VarArgsGPOffset = 0;
+ /// VarArgsFPOffset - X86-64 vararg func fp reg offset.
+ unsigned VarArgsFPOffset = 0;
+ /// ArgumentStackSize - The number of bytes on stack consumed by the arguments
+ /// being passed on the stack.
+ unsigned ArgumentStackSize = 0;
+ /// NumLocalDynamics - Number of local-dynamic TLS accesses.
+ unsigned NumLocalDynamics = 0;
+ /// HasPushSequences - Keeps track of whether this function uses sequences
+ /// of pushes to pass function parameters.
+ bool HasPushSequences = false;
+
+ /// True if the function uses llvm.x86.seh.restoreframe, and it needed a spill
+ /// slot for the frame pointer.
+ bool HasSEHFramePtrSave = false;
+
+ /// The frame index of a stack object containing the original frame pointer
+ /// used to address arguments in a function using a base pointer.
+ int SEHFramePtrSaveIndex = 0;
+
+private:
+ /// ForwardedMustTailRegParms - A list of virtual and physical registers
+ /// that must be forwarded to every musttail call.
+ SmallVector<ForwardedRegister, 1> ForwardedMustTailRegParms;
public:
- X86MachineFunctionInfo() : ForceFramePointer(false),
- CalleeSavedFrameSize(0),
- BytesToPopOnReturn(0),
- DecorationStyle(None),
- ReturnAddrIndex(0),
- TailCallReturnAddrDelta(0) {}
-
- X86MachineFunctionInfo(MachineFunction &MF) : ForceFramePointer(false),
- CalleeSavedFrameSize(0),
- BytesToPopOnReturn(0),
- DecorationStyle(None),
- ReturnAddrIndex(0),
- TailCallReturnAddrDelta(0) {}
-
- bool getForceFramePointer() const { return ForceFramePointer;}
+ X86MachineFunctionInfo() = default;
+
+ explicit X86MachineFunctionInfo(MachineFunction &MF) {}
+
+ bool getForceFramePointer() const { return ForceFramePointer;}
void setForceFramePointer(bool forceFP) { ForceFramePointer = forceFP; }
+ bool getHasPushSequences() const { return HasPushSequences; }
+ void setHasPushSequences(bool HasPush) { HasPushSequences = HasPush; }
+
+ bool getRestoreBasePointer() const { return RestoreBasePointerOffset!=0; }
+ void setRestoreBasePointer(const MachineFunction *MF);
+ int getRestoreBasePointerOffset() const {return RestoreBasePointerOffset; }
+
unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; }
unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; }
void setBytesToPopOnReturn (unsigned bytes) { BytesToPopOnReturn = bytes;}
- NameDecorationStyle getDecorationStyle() const { return DecorationStyle; }
- void setDecorationStyle(NameDecorationStyle style) { DecorationStyle = style;}
-
int getRAIndex() const { return ReturnAddrIndex; }
void setRAIndex(int Index) { ReturnAddrIndex = Index; }
+ int getFAIndex() const { return FrameAddrIndex; }
+ void setFAIndex(int Index) { FrameAddrIndex = Index; }
+
int getTCReturnAddrDelta() const { return TailCallReturnAddrDelta; }
void setTCReturnAddrDelta(int delta) {TailCallReturnAddrDelta = delta;}
+
+ unsigned getSRetReturnReg() const { return SRetReturnReg; }
+ void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
+
+ unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
+ void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
+
+ int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
+ void setVarArgsFrameIndex(int Idx) { VarArgsFrameIndex = Idx; }
+
+ int getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
+ void setRegSaveFrameIndex(int Idx) { RegSaveFrameIndex = Idx; }
+
+ unsigned getVarArgsGPOffset() const { return VarArgsGPOffset; }
+ void setVarArgsGPOffset(unsigned Offset) { VarArgsGPOffset = Offset; }
+
+ unsigned getVarArgsFPOffset() const { return VarArgsFPOffset; }
+ void setVarArgsFPOffset(unsigned Offset) { VarArgsFPOffset = Offset; }
+
+ unsigned getArgumentStackSize() const { return ArgumentStackSize; }
+ void setArgumentStackSize(unsigned size) { ArgumentStackSize = size; }
+
+ unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
+ void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
+
+ bool getHasSEHFramePtrSave() const { return HasSEHFramePtrSave; }
+ void setHasSEHFramePtrSave(bool V) { HasSEHFramePtrSave = V; }
+
+ int getSEHFramePtrSaveIndex() const { return SEHFramePtrSaveIndex; }
+ void setSEHFramePtrSaveIndex(int Index) { SEHFramePtrSaveIndex = Index; }
+
+ SmallVectorImpl<ForwardedRegister> &getForwardedMustTailRegParms() {
+ return ForwardedMustTailRegParms;
+ }
};
+
} // End llvm namespace
#endif