xref: /freebsd-src/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZMachineFunctionInfo.h (revision 5f757f3ff9144b609b3c433dfd370cc6bdc191ad)
10b57cec5SDimitry Andric //=== SystemZMachineFunctionInfo.h - SystemZ machine function info -*- C++ -*-//
20b57cec5SDimitry Andric //
30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
60b57cec5SDimitry Andric //
70b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
80b57cec5SDimitry Andric 
90b57cec5SDimitry Andric #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
100b57cec5SDimitry Andric #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
110b57cec5SDimitry Andric 
120b57cec5SDimitry Andric #include "llvm/CodeGen/MachineFunction.h"
130b57cec5SDimitry Andric 
140b57cec5SDimitry Andric namespace llvm {
150b57cec5SDimitry Andric 
16480093f4SDimitry Andric namespace SystemZ {
17480093f4SDimitry Andric // A struct to hold the low and high GPR registers to be saved/restored as
18480093f4SDimitry Andric // well as the offset into the register save area of the low register.
19480093f4SDimitry Andric struct GPRRegs {
20*5f757f3fSDimitry Andric   unsigned LowGPR = 0;
21*5f757f3fSDimitry Andric   unsigned HighGPR = 0;
22*5f757f3fSDimitry Andric   unsigned GPROffset = 0;
23*5f757f3fSDimitry Andric   GPRRegs() = default;
24480093f4SDimitry Andric   };
25480093f4SDimitry Andric }
26480093f4SDimitry Andric 
270b57cec5SDimitry Andric class SystemZMachineFunctionInfo : public MachineFunctionInfo {
280b57cec5SDimitry Andric   virtual void anchor();
29480093f4SDimitry Andric 
3006c3fb27SDimitry Andric   /// Size of expected parameter area for current function. (Fixed args only).
3106c3fb27SDimitry Andric   unsigned SizeOfFnParams;
3206c3fb27SDimitry Andric 
33480093f4SDimitry Andric   SystemZ::GPRRegs SpillGPRRegs;
34480093f4SDimitry Andric   SystemZ::GPRRegs RestoreGPRRegs;
355ffd83dbSDimitry Andric   Register VarArgsFirstGPR;
365ffd83dbSDimitry Andric   Register VarArgsFirstFPR;
370b57cec5SDimitry Andric   unsigned VarArgsFrameIndex;
380b57cec5SDimitry Andric   unsigned RegSaveFrameIndex;
390b57cec5SDimitry Andric   int FramePointerSaveIndex;
400b57cec5SDimitry Andric   unsigned NumLocalDynamics;
4106c3fb27SDimitry Andric   /// z/OS XPLINK ABI: incoming ADA virtual register.
4206c3fb27SDimitry Andric   Register VRegADA;
430b57cec5SDimitry Andric 
440b57cec5SDimitry Andric public:
SystemZMachineFunctionInfo(const Function & F,const TargetSubtargetInfo * STI)45bdd1243dSDimitry Andric   SystemZMachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)
4606c3fb27SDimitry Andric       : SizeOfFnParams(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
4706c3fb27SDimitry Andric         VarArgsFrameIndex(0), RegSaveFrameIndex(0), FramePointerSaveIndex(0),
4806c3fb27SDimitry Andric         NumLocalDynamics(0) {}
490b57cec5SDimitry Andric 
5081ad6265SDimitry Andric   MachineFunctionInfo *
5181ad6265SDimitry Andric   clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
5281ad6265SDimitry Andric         const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
5381ad6265SDimitry Andric       const override;
5481ad6265SDimitry Andric 
5506c3fb27SDimitry Andric   // z/OS: Get and set the size of the expected parameter area for the
5606c3fb27SDimitry Andric   // current function. (ie. Size of param area in caller).
getSizeOfFnParams()5706c3fb27SDimitry Andric   unsigned getSizeOfFnParams() const { return SizeOfFnParams; }
setSizeOfFnParams(unsigned Size)5806c3fb27SDimitry Andric   void setSizeOfFnParams(unsigned Size) { SizeOfFnParams = Size; }
5906c3fb27SDimitry Andric 
60480093f4SDimitry Andric   // Get and set the first and last call-saved GPR that should be saved by
61480093f4SDimitry Andric   // this function and the SP offset for the STMG.  These are 0 if no GPRs
62480093f4SDimitry Andric   // need to be saved or restored.
getSpillGPRRegs()63480093f4SDimitry Andric   SystemZ::GPRRegs getSpillGPRRegs() const { return SpillGPRRegs; }
setSpillGPRRegs(Register Low,Register High,unsigned Offs)645ffd83dbSDimitry Andric   void setSpillGPRRegs(Register Low, Register High, unsigned Offs) {
65480093f4SDimitry Andric     SpillGPRRegs.LowGPR = Low;
66480093f4SDimitry Andric     SpillGPRRegs.HighGPR = High;
67480093f4SDimitry Andric     SpillGPRRegs.GPROffset = Offs;
68480093f4SDimitry Andric   }
690b57cec5SDimitry Andric 
70480093f4SDimitry Andric   // Get and set the first and last call-saved GPR that should be restored by
71480093f4SDimitry Andric   // this function and the SP offset for the LMG.  These are 0 if no GPRs
72480093f4SDimitry Andric   // need to be saved or restored.
getRestoreGPRRegs()73480093f4SDimitry Andric   SystemZ::GPRRegs getRestoreGPRRegs() const { return RestoreGPRRegs; }
setRestoreGPRRegs(Register Low,Register High,unsigned Offs)745ffd83dbSDimitry Andric   void setRestoreGPRRegs(Register Low, Register High, unsigned Offs) {
75480093f4SDimitry Andric     RestoreGPRRegs.LowGPR = Low;
76480093f4SDimitry Andric     RestoreGPRRegs.HighGPR = High;
77480093f4SDimitry Andric     RestoreGPRRegs.GPROffset = Offs;
78480093f4SDimitry Andric   }
790b57cec5SDimitry Andric 
800b57cec5SDimitry Andric   // Get and set the number of fixed (as opposed to variable) arguments
810b57cec5SDimitry Andric   // that are passed in GPRs to this function.
getVarArgsFirstGPR()825ffd83dbSDimitry Andric   Register getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
setVarArgsFirstGPR(Register GPR)835ffd83dbSDimitry Andric   void setVarArgsFirstGPR(Register GPR) { VarArgsFirstGPR = GPR; }
840b57cec5SDimitry Andric 
850b57cec5SDimitry Andric   // Likewise FPRs.
getVarArgsFirstFPR()865ffd83dbSDimitry Andric   Register getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
setVarArgsFirstFPR(Register FPR)875ffd83dbSDimitry Andric   void setVarArgsFirstFPR(Register FPR) { VarArgsFirstFPR = FPR; }
880b57cec5SDimitry Andric 
890b57cec5SDimitry Andric   // Get and set the frame index of the first stack vararg.
getVarArgsFrameIndex()900b57cec5SDimitry Andric   unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
setVarArgsFrameIndex(unsigned FI)910b57cec5SDimitry Andric   void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
920b57cec5SDimitry Andric 
930b57cec5SDimitry Andric   // Get and set the frame index of the register save area
940b57cec5SDimitry Andric   // (i.e. the incoming stack pointer).
getRegSaveFrameIndex()950b57cec5SDimitry Andric   unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
setRegSaveFrameIndex(unsigned FI)960b57cec5SDimitry Andric   void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
970b57cec5SDimitry Andric 
980b57cec5SDimitry Andric   // Get and set the frame index of where the old frame pointer is stored.
getFramePointerSaveIndex()990b57cec5SDimitry Andric   int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
setFramePointerSaveIndex(int Idx)1000b57cec5SDimitry Andric   void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
1010b57cec5SDimitry Andric 
1020b57cec5SDimitry Andric   // Count number of local-dynamic TLS symbols used.
getNumLocalDynamicTLSAccesses()1030b57cec5SDimitry Andric   unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
incNumLocalDynamicTLSAccesses()1040b57cec5SDimitry Andric   void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
10506c3fb27SDimitry Andric 
10606c3fb27SDimitry Andric   // Get and set the function's incoming special XPLINK ABI defined ADA
10706c3fb27SDimitry Andric   // register.
getADAVirtualRegister()10806c3fb27SDimitry Andric   Register getADAVirtualRegister() const { return VRegADA; }
setADAVirtualRegister(Register Reg)10906c3fb27SDimitry Andric   void setADAVirtualRegister(Register Reg) { VRegADA = Reg; }
1100b57cec5SDimitry Andric };
1110b57cec5SDimitry Andric 
1120b57cec5SDimitry Andric } // end namespace llvm
1130b57cec5SDimitry Andric 
1140b57cec5SDimitry Andric #endif
115