-//===-- X86MachineFuctionInfo.h - X86 machine function info -----*- C++ -*-===//
+//===-- X86MachineFunctionInfo.h - X86 machine function info ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#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>
/// 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;
+ 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 (in addition
/// to the space used by the return address).
/// Used on windows platform for stdcall & fastcall name decoration
- unsigned BytesToPopOnReturn;
+ unsigned BytesToPopOnReturn = 0;
/// ReturnAddrIndex - FrameIndex for return slot.
- int ReturnAddrIndex;
+ 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;
+ 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;
+ 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;
+ unsigned GlobalBaseReg = 0;
/// VarArgsFrameIndex - FrameIndex for start of varargs area.
- int VarArgsFrameIndex;
+ int VarArgsFrameIndex = 0;
/// RegSaveFrameIndex - X86-64 vararg func register save area.
- int RegSaveFrameIndex;
+ int RegSaveFrameIndex = 0;
/// VarArgsGPOffset - X86-64 vararg func int reg offset.
- unsigned VarArgsGPOffset;
+ unsigned VarArgsGPOffset = 0;
/// VarArgsFPOffset - X86-64 vararg func fp reg offset.
- unsigned VarArgsFPOffset;
+ unsigned VarArgsFPOffset = 0;
/// ArgumentStackSize - The number of bytes on stack consumed by the arguments
/// being passed on the stack.
- unsigned ArgumentStackSize;
+ unsigned ArgumentStackSize = 0;
/// NumLocalDynamics - Number of local-dynamic TLS accesses.
- unsigned NumLocalDynamics;
+ unsigned NumLocalDynamics = 0;
+ /// HasPushSequences - Keeps track of whether this function uses sequences
+ /// of pushes to pass function parameters.
+ bool HasPushSequences = false;
-public:
- /// Describes a register that needs to be forwarded from the prologue to a
- /// musttail call.
- struct Forward {
- Forward(unsigned VReg, MCPhysReg PReg, MVT VT)
- : VReg(VReg), PReg(PReg), VT(VT) {}
- unsigned VReg;
- MCPhysReg PReg;
- MVT VT;
- };
+ /// True if the function recovers from an SEH exception, and therefore needs
+ /// to spill and restore 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;
+
+ /// True if this function has a subset of CSRs that is handled explicitly via
+ /// copies.
+ bool IsSplitCSR = false;
private:
/// ForwardedMustTailRegParms - A list of virtual and physical registers
/// that must be forwarded to every musttail call.
- std::vector<Forward> ForwardedMustTailRegParms;
+ SmallVector<ForwardedRegister, 1> ForwardedMustTailRegParms;
public:
- X86MachineFunctionInfo() : ForceFramePointer(false),
- RestoreBasePointerOffset(0),
- CalleeSavedFrameSize(0),
- BytesToPopOnReturn(0),
- ReturnAddrIndex(0),
- TailCallReturnAddrDelta(0),
- SRetReturnReg(0),
- GlobalBaseReg(0),
- VarArgsFrameIndex(0),
- RegSaveFrameIndex(0),
- VarArgsGPOffset(0),
- VarArgsFPOffset(0),
- ArgumentStackSize(0),
- NumLocalDynamics(0) {}
-
- explicit X86MachineFunctionInfo(MachineFunction &MF)
- : ForceFramePointer(false),
- RestoreBasePointerOffset(0),
- CalleeSavedFrameSize(0),
- BytesToPopOnReturn(0),
- ReturnAddrIndex(0),
- TailCallReturnAddrDelta(0),
- SRetReturnReg(0),
- GlobalBaseReg(0),
- VarArgsFrameIndex(0),
- RegSaveFrameIndex(0),
- VarArgsGPOffset(0),
- VarArgsFPOffset(0),
- ArgumentStackSize(0),
- NumLocalDynamics(0) {}
+ 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; }
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 getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
- std::vector<Forward> &getForwardedMustTailRegParms() {
+ 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;
}
+
+ bool isSplitCSR() const { return IsSplitCSR; }
+ void setIsSplitCSR(bool s) { IsSplitCSR = s; }
};
} // End llvm namespace
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