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4047ccf510
This commit introduces a new enumerator named 'PSVKind' in the 'PseudoSourceValue' class. This enumerator is now used to distinguish between the various kinds of pseudo source values. This change is done in preparation for the changes to the pseudo source value object management and to the PseudoSourceValue's class hierarchy - the next two PseudoSourceValue commits will get rid of the global variable that manages the pseudo source values and the mips specific MipsCallEntry subclass. Reviewers: Akira Hatanaka llvm-svn: 244687
147 lines
4.0 KiB
C++
147 lines
4.0 KiB
C++
//===-- MipsMachineFunctionInfo.cpp - Private data used for Mips ----------===//
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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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#include "MCTargetDesc/MipsBaseInfo.h"
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#include "MipsInstrInfo.h"
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#include "MipsMachineFunction.h"
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#include "MipsSubtarget.h"
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#include "MipsTargetMachine.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/IR/Function.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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static cl::opt<bool>
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FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
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cl::desc("Always use $gp as the global base register."));
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// class MipsCallEntry.
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MipsCallEntry::MipsCallEntry(StringRef N) : PseudoSourceValue(MipsPSV) {
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#ifndef NDEBUG
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Name = N;
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Val = nullptr;
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#endif
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}
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MipsCallEntry::MipsCallEntry(const GlobalValue *V)
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: PseudoSourceValue(MipsPSV) {
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#ifndef NDEBUG
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Val = V;
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#endif
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}
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bool MipsCallEntry::isConstant(const MachineFrameInfo *) const {
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return false;
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}
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bool MipsCallEntry::isAliased(const MachineFrameInfo *) const {
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return false;
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}
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bool MipsCallEntry::mayAlias(const MachineFrameInfo *) const {
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return false;
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}
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void MipsCallEntry::printCustom(raw_ostream &O) const {
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O << "MipsCallEntry: ";
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#ifndef NDEBUG
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if (Val)
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O << Val->getName();
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else
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O << Name;
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#endif
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}
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MipsFunctionInfo::~MipsFunctionInfo() {}
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bool MipsFunctionInfo::globalBaseRegSet() const {
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return GlobalBaseReg;
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}
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unsigned MipsFunctionInfo::getGlobalBaseReg() {
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// Return if it has already been initialized.
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if (GlobalBaseReg)
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return GlobalBaseReg;
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MipsSubtarget const &STI =
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static_cast<const MipsSubtarget &>(MF.getSubtarget());
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const TargetRegisterClass *RC =
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STI.inMips16Mode()
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? &Mips::CPU16RegsRegClass
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: STI.inMicroMipsMode()
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? &Mips::GPRMM16RegClass
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: static_cast<const MipsTargetMachine &>(MF.getTarget())
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.getABI()
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.IsN64()
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? &Mips::GPR64RegClass
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: &Mips::GPR32RegClass;
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return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
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}
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bool MipsFunctionInfo::mips16SPAliasRegSet() const {
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return Mips16SPAliasReg;
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}
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unsigned MipsFunctionInfo::getMips16SPAliasReg() {
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// Return if it has already been initialized.
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if (Mips16SPAliasReg)
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return Mips16SPAliasReg;
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const TargetRegisterClass *RC = &Mips::CPU16RegsRegClass;
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return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
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}
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void MipsFunctionInfo::createEhDataRegsFI() {
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for (int I = 0; I < 4; ++I) {
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const TargetRegisterClass *RC =
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static_cast<const MipsTargetMachine &>(MF.getTarget()).getABI().IsN64()
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? &Mips::GPR64RegClass
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: &Mips::GPR32RegClass;
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EhDataRegFI[I] = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
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RC->getAlignment(), false);
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}
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}
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bool MipsFunctionInfo::isEhDataRegFI(int FI) const {
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return CallsEhReturn && (FI == EhDataRegFI[0] || FI == EhDataRegFI[1]
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|| FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
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}
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MachinePointerInfo MipsFunctionInfo::callPtrInfo(StringRef Name) {
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std::unique_ptr<const MipsCallEntry> &E = ExternalCallEntries[Name];
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if (!E)
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E = llvm::make_unique<MipsCallEntry>(Name);
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return MachinePointerInfo(E.get());
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}
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MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
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std::unique_ptr<const MipsCallEntry> &E = GlobalCallEntries[Val];
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if (!E)
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E = llvm::make_unique<MipsCallEntry>(Val);
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return MachinePointerInfo(E.get());
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}
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int MipsFunctionInfo::getMoveF64ViaSpillFI(const TargetRegisterClass *RC) {
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if (MoveF64ViaSpillFI == -1) {
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MoveF64ViaSpillFI = MF.getFrameInfo()->CreateStackObject(
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RC->getSize(), RC->getAlignment(), false);
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}
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return MoveF64ViaSpillFI;
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}
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void MipsFunctionInfo::anchor() { }
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