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c0457f68d4
Enable the SystemZ back-end to lower FRAMEADDR and RETURNADDR, which previously would cause the back-end to crash. Currently, only a frame count of zero is supported. Author: bryanpkc Differential Revision: http://reviews.llvm.org/D18514 llvm-svn: 265291
80 lines
3.1 KiB
C++
80 lines
3.1 KiB
C++
//=== SystemZMachineFunctionInfo.h - SystemZ machine function info -*- C++ -*-//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
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#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
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#include "llvm/CodeGen/MachineFunction.h"
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namespace llvm {
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class SystemZMachineFunctionInfo : public MachineFunctionInfo {
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virtual void anchor();
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unsigned LowSavedGPR;
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unsigned HighSavedGPR;
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unsigned VarArgsFirstGPR;
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unsigned VarArgsFirstFPR;
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unsigned VarArgsFrameIndex;
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unsigned RegSaveFrameIndex;
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int FramePointerSaveIndex;
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bool ManipulatesSP;
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unsigned NumLocalDynamics;
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public:
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explicit SystemZMachineFunctionInfo(MachineFunction &MF)
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: LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
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VarArgsFrameIndex(0), RegSaveFrameIndex(0), FramePointerSaveIndex(0),
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ManipulatesSP(false), NumLocalDynamics(0) {}
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// Get and set the first call-saved GPR that should be saved and restored
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// by this function. This is 0 if no GPRs need to be saved or restored.
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unsigned getLowSavedGPR() const { return LowSavedGPR; }
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void setLowSavedGPR(unsigned Reg) { LowSavedGPR = Reg; }
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// Get and set the last call-saved GPR that should be saved and restored
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// by this function.
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unsigned getHighSavedGPR() const { return HighSavedGPR; }
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void setHighSavedGPR(unsigned Reg) { HighSavedGPR = Reg; }
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// Get and set the number of fixed (as opposed to variable) arguments
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// that are passed in GPRs to this function.
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unsigned getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
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void setVarArgsFirstGPR(unsigned GPR) { VarArgsFirstGPR = GPR; }
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// Likewise FPRs.
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unsigned getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
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void setVarArgsFirstFPR(unsigned FPR) { VarArgsFirstFPR = FPR; }
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// Get and set the frame index of the first stack vararg.
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unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
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// Get and set the frame index of the register save area
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// (i.e. the incoming stack pointer).
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unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
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void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
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// Get and set the frame index of where the old frame pointer is stored.
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int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
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void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
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// Get and set whether the function directly manipulates the stack pointer,
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// e.g. through STACKSAVE or STACKRESTORE.
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bool getManipulatesSP() const { return ManipulatesSP; }
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void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
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// Count number of local-dynamic TLS symbols used.
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unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
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void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
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};
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} // end namespace llvm
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#endif
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