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6a6f9554e3
Summary: The GR740 provides an up cycle counter in the registers ASR22 and ASR23. As these registers can not be read together atomically we only use the value of ASR23 for llvm.readcyclecounter(). The ASR23 register holds the 32 LSBs of the up-counter. Reviewers: jyknight, venkatra Reviewed By: jyknight Subscribers: jfb, fedor.sergeev, jrtc27, llvm-commits Differential Revision: https://reviews.llvm.org/D48638 llvm-svn: 340733
125 lines
4.0 KiB
C++
125 lines
4.0 KiB
C++
//===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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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//
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// This file declares the SPARC specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
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#define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
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#include "SparcFrameLowering.h"
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#include "SparcISelLowering.h"
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#include "SparcInstrInfo.h"
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#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
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#include "llvm/CodeGen/TargetFrameLowering.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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#include "llvm/IR/DataLayout.h"
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#include <string>
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#define GET_SUBTARGETINFO_HEADER
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#include "SparcGenSubtargetInfo.inc"
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namespace llvm {
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class StringRef;
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class SparcSubtarget : public SparcGenSubtargetInfo {
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Triple TargetTriple;
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virtual void anchor();
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bool UseSoftMulDiv;
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bool IsV9;
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bool IsLeon;
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bool V8DeprecatedInsts;
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bool IsVIS, IsVIS2, IsVIS3;
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bool Is64Bit;
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bool HasHardQuad;
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bool UsePopc;
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bool UseSoftFloat;
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bool HasNoFSMULD;
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bool HasNoFMULS;
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// LEON features
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bool HasUmacSmac;
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bool HasLeonCasa;
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bool InsertNOPLoad;
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bool FixAllFDIVSQRT;
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bool DetectRoundChange;
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bool HasLeonCycleCounter;
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SparcInstrInfo InstrInfo;
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SparcTargetLowering TLInfo;
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SelectionDAGTargetInfo TSInfo;
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SparcFrameLowering FrameLowering;
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public:
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SparcSubtarget(const Triple &TT, const std::string &CPU,
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const std::string &FS, const TargetMachine &TM, bool is64bit);
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const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
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const TargetFrameLowering *getFrameLowering() const override {
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return &FrameLowering;
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}
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const SparcRegisterInfo *getRegisterInfo() const override {
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return &InstrInfo.getRegisterInfo();
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}
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const SparcTargetLowering *getTargetLowering() const override {
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return &TLInfo;
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}
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const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
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return &TSInfo;
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}
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bool enableMachineScheduler() const override;
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bool useSoftMulDiv() const { return UseSoftMulDiv; }
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bool isV9() const { return IsV9; }
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bool isLeon() const { return IsLeon; }
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bool isVIS() const { return IsVIS; }
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bool isVIS2() const { return IsVIS2; }
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bool isVIS3() const { return IsVIS3; }
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bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
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bool hasHardQuad() const { return HasHardQuad; }
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bool usePopc() const { return UsePopc; }
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bool useSoftFloat() const { return UseSoftFloat; }
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bool hasNoFSMULD() const { return HasNoFSMULD; }
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bool hasNoFMULS() const { return HasNoFMULS; }
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// Leon options
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bool hasUmacSmac() const { return HasUmacSmac; }
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bool hasLeonCasa() const { return HasLeonCasa; }
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bool insertNOPLoad() const { return InsertNOPLoad; }
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bool fixAllFDIVSQRT() const { return FixAllFDIVSQRT; }
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bool detectRoundChange() const { return DetectRoundChange; }
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bool hasLeonCycleCounter() const { return HasLeonCycleCounter; }
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/// ParseSubtargetFeatures - Parses features string setting specified
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/// subtarget options. Definition of function is auto generated by tblgen.
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void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
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SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
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bool is64Bit() const { return Is64Bit; }
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/// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
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/// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
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int64_t getStackPointerBias() const {
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return is64Bit() ? 2047 : 0;
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}
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/// Given a actual stack size as determined by FrameInfo, this function
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/// returns adjusted framesize which includes space for register window
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/// spills and arguments.
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int getAdjustedFrameSize(int stackSize) const;
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bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
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};
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} // end namespace llvm
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#endif
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