f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
142 lines
3.8 KiB
C++
142 lines
3.8 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 "MipsMachineFunction.h"
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#include "MCTargetDesc/MipsBaseInfo.h"
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#include "MipsInstrInfo.h"
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#include "MipsSubtarget.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(const StringRef &N) {
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#ifndef NDEBUG
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Name = N;
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Val = 0;
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#endif
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}
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MipsCallEntry::MipsCallEntry(const GlobalValue *V) {
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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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for (StringMap<const MipsCallEntry *>::iterator
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I = ExternalCallEntries.begin(), E = ExternalCallEntries.end(); I != E;
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++I)
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delete I->getValue();
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for (ValueMap<const GlobalValue *, const MipsCallEntry *>::iterator
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I = GlobalCallEntries.begin(), E = GlobalCallEntries.end(); I != E; ++I)
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delete I->second;
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}
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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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const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
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const TargetRegisterClass *RC;
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if (ST.inMips16Mode())
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RC=(const TargetRegisterClass*)&Mips::CPU16RegsRegClass;
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else
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RC = ST.isABI_N64() ?
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(const TargetRegisterClass*)&Mips::GPR64RegClass :
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(const TargetRegisterClass*)&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;
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RC=(const TargetRegisterClass*)&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 MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
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const TargetRegisterClass *RC = ST.isABI_N64() ?
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&Mips::GPR64RegClass : &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(const StringRef &Name) {
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const MipsCallEntry *&E = ExternalCallEntries[Name];
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if (!E)
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E = new MipsCallEntry(Name);
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return MachinePointerInfo(E);
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}
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MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
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const MipsCallEntry *&E = GlobalCallEntries[Val];
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if (!E)
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E = new MipsCallEntry(Val);
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return MachinePointerInfo(E);
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}
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void MipsFunctionInfo::anchor() { }
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