54 #define DEBUG_TYPE "mips-asm-printer"
74 const char *
Symbol = it->first;
76 if (StubsNeeded.find(Symbol) == StubsNeeded.end())
77 StubsNeeded[Symbol] = Signature;
83 NaClAlignIndirectJumpTargets(MF);
94 #include "MipsGenMCPseudoLowering.inc"
98 void MipsAsmPrinter::emitPseudoIndirectBranch(
MCStreamer &OutStreamer,
100 bool HasLinkReg =
false;
145 if (InConstantPool && MI->
getOpcode() != Mips::CONSTPOOL_ENTRY) {
147 InConstantPool =
false;
149 if (MI->
getOpcode() == Mips::CONSTPOOL_ENTRY) {
161 if (!InConstantPool) {
163 InConstantPool =
true;
182 if (emitPseudoExpansionLowering(*OutStreamer, &*I))
185 if (I->getOpcode() == Mips::PseudoReturn ||
186 I->getOpcode() == Mips::PseudoReturn64 ||
187 I->getOpcode() == Mips::PseudoIndirectBranch ||
188 I->getOpcode() == Mips::PseudoIndirectBranch64) {
189 emitPseudoIndirectBranch(*OutStreamer, &*I);
201 && !isLongBranchPseudo(I->getOpcode()))
207 }
while ((++I != E) && I->isInsideBundle());
249 unsigned CPUBitmask = 0, FPUBitmask = 0;
250 int CPUTopSavedRegOff, FPUTopSavedRegOff;
257 unsigned CPURegSize = Mips::GPR32RegClass.getSize();
258 unsigned FGR32RegSize = Mips::FGR32RegClass.getSize();
259 unsigned AFGR64RegSize = Mips::AFGR64RegClass.getSize();
260 bool HasAFGR64Reg =
false;
261 unsigned CSFPRegsSize = 0;
263 for (
const auto &
I : CSI) {
264 unsigned Reg =
I.getReg();
269 if (Mips::FGR32RegClass.
contains(Reg)) {
270 FPUBitmask |= (1 << RegNum);
271 CSFPRegsSize += FGR32RegSize;
272 }
else if (Mips::AFGR64RegClass.
contains(Reg)) {
273 FPUBitmask |= (3 << RegNum);
274 CSFPRegsSize += AFGR64RegSize;
276 }
else if (Mips::GPR32RegClass.
contains(Reg))
277 CPUBitmask |= (1 << RegNum);
281 FPUTopSavedRegOff = FPUBitmask ?
282 (HasAFGR64Reg ? -AFGR64RegSize : -FGR32RegSize) : 0;
285 CPUTopSavedRegOff = CPUBitmask ? -CSFPRegsSize - CPURegSize : 0;
289 TS.
emitMask(CPUBitmask, CPUTopSavedRegOff);
292 TS.
emitFMask(FPUBitmask, FPUTopSavedRegOff);
307 getTargetStreamer().
emitFrame(stackReg, stackSize, returnReg);
312 switch (static_cast<MipsTargetMachine &>(
TM).getABI().GetEnumValue()) {
351 if (!IsNakedFunction)
354 if (!IsNakedFunction)
382 InConstantPool =
false;
403 if (isa<SwitchInst>(bb->getTerminator()))
429 while (I != Pred->
begin() && !(--
I)->isTerminator()) ;
431 return !I->isBarrier();
436 unsigned AsmVariant,
const char *ExtraCode,
439 if (ExtraCode && ExtraCode[0]) {
440 if (ExtraCode[1] != 0)
return true;
443 switch (ExtraCode[0]) {
483 if (!FlagsOP.
isImm())
498 unsigned RegOp = OpNum;
502 switch(ExtraCode[0]) {
535 unsigned OpNum,
unsigned AsmVariant,
536 const char *ExtraCode,
538 assert(OpNum + 1 < MI->
getNumOperands() &&
"Insufficient operands");
541 assert(BaseMO.isReg() &&
"Unexpected base pointer for inline asm memory operand.");
542 assert(OffsetMO.
isImm() &&
"Unexpected offset for inline asm memory operand.");
543 int Offset = OffsetMO.
getImm();
547 if (ExtraCode[0] ==
'D')
621 if (closeP) O <<
")";
628 O << (
unsigned short int)MO.
getImm();
637 O << (
unsigned short int)(
unsigned char)MO.
getImm();
677 const char *Modifier) {
685 if (i != opNum) O <<
", ";
743 if (ABI.
IsO32() && (STI.isABI_FPXX() || STI.isFP64bit()))
749 if (ABI.
IsO32() && (!STI.useOddSPReg() || STI.isABI_FPXX()))
753 void MipsAsmPrinter::emitInlineAsmStart()
const {
769 void MipsAsmPrinter::emitInlineAsmEnd(
const MCSubtargetInfo &StartInfo,
783 void MipsAsmPrinter::EmitInstrReg(
const MCSubtargetInfo &STI,
unsigned Opcode,
792 unsigned Opcode,
unsigned Reg1,
800 if (Opcode == Mips::MTC1) {
801 unsigned Temp = Reg1;
812 unsigned Opcode,
unsigned Reg1,
813 unsigned Reg2,
unsigned Reg3) {
823 unsigned MovOpc,
unsigned Reg1,
824 unsigned Reg2,
unsigned FPReg1,
825 unsigned FPReg2,
bool LE) {
827 unsigned temp = Reg1;
831 EmitInstrRegReg(STI, MovOpc, Reg1, FPReg1);
832 EmitInstrRegReg(STI, MovOpc, Reg2, FPReg2);
837 bool LE,
bool ToFP) {
838 using namespace Mips16HardFloatInfo;
839 unsigned MovOpc = ToFP ? Mips::MTC1 : Mips::MFC1;
842 EmitInstrRegReg(STI, MovOpc, Mips::A0, Mips::F12);
845 EmitMovFPIntPair(STI, MovOpc, Mips::A0, Mips::A1, Mips::F12, Mips::F14, LE);
848 EmitInstrRegReg(STI, MovOpc, Mips::A0, Mips::F12);
849 EmitMovFPIntPair(STI, MovOpc, Mips::A2, Mips::A3, Mips::F14, Mips::F15, LE);
852 EmitMovFPIntPair(STI, MovOpc, Mips::A0, Mips::A1, Mips::F12, Mips::F13, LE);
855 EmitMovFPIntPair(STI, MovOpc, Mips::A0, Mips::A1, Mips::F12, Mips::F13, LE);
856 EmitMovFPIntPair(STI, MovOpc, Mips::A2, Mips::A3, Mips::F14, Mips::F15, LE);
859 EmitMovFPIntPair(STI, MovOpc, Mips::A0, Mips::A1, Mips::F12, Mips::F13, LE);
860 EmitInstrRegReg(STI, MovOpc, Mips::A2, Mips::F14);
867 void MipsAsmPrinter::EmitSwapFPIntRetval(
870 using namespace Mips16HardFloatInfo;
871 unsigned MovOpc = Mips::MFC1;
874 EmitInstrRegReg(STI, MovOpc, Mips::V0, Mips::F0);
877 EmitMovFPIntPair(STI, MovOpc, Mips::V0, Mips::V1, Mips::F0, Mips::F1, LE);
880 EmitMovFPIntPair(STI, MovOpc, Mips::V0, Mips::V1, Mips::F0, Mips::F1, LE);
883 EmitMovFPIntPair(STI, MovOpc, Mips::V0, Mips::V1, Mips::F0, Mips::F1, LE);
884 EmitMovFPIntPair(STI, MovOpc, Mips::A0, Mips::A1, Mips::F2, Mips::F3, LE);
891 void MipsAsmPrinter::EmitFPCallStub(
894 using namespace Mips16HardFloatInfo;
914 switch (Signature->
RetSig) {
925 RetType =
"double complex";
937 Parms =
"float, float";
940 Parms =
"float, double";
946 Parms =
"double, double";
949 Parms =
"double, float";
955 OutStreamer->
AddComment(
"\t# Stub function to call " +
Twine(RetType) +
" " +
984 std::string x =
"__call_stub_fp_" + std::string(Symbol);
995 "should not be here if we are compiling pic");
1012 EmitInstrRegRegReg(*STI, Mips::ADDu, Mips::S2, Mips::RA, Mips::ZERO);
1014 EmitSwapFPIntParams(*STI, Signature->
ParamSig, LE,
true);
1018 EmitJal(*STI, MSymbol);
1021 EmitSwapFPIntRetval(*STI, Signature->
RetSig, LE);
1027 EmitInstrReg(*STI, Mips::JR, Mips::S2);
1045 it = StubsNeeded.begin();
1046 it != StubsNeeded.end(); ++it) {
1047 const char *Symbol = it->first;
1049 EmitFPCallStub(Symbol, Signature);
1065 const std::vector<MachineJumpTableEntry> &
JT = JtInfo->getJumpTables();
1066 for (
unsigned I = 0; I < JT.
size(); ++
I) {
1067 const std::vector<MachineBasicBlock*> &MBBs = JT[
I].MBBs;
1069 for (
unsigned J = 0; J < MBBs.size(); ++J)
1077 if (MBB->hasAddressTaken())
1082 bool MipsAsmPrinter::isLongBranchPseudo(
int Opcode)
const {
1083 return (Opcode == Mips::LONG_BRANCH_LUi
1084 || Opcode == Mips::LONG_BRANCH_ADDiu
1085 || Opcode == Mips::LONG_BRANCH_DADDiu);
MachineConstantPoolValue * MachineCPVal
virtual void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff)
A parsed version of the target data layout string in and methods for querying it. ...
unsigned getAlignment() const
getAlignment - Return the alignment (log2, not bytes) of the function.
StringRef getTargetCPU() const
virtual void AddComment(const Twine &T)
Add a textual command.
const GlobalValue * getGlobal() const
instr_iterator instr_end()
std::unique_ptr< MCStreamer > OutStreamer
This is the MCStreamer object for the file we are generating.
static const MCSymbolRefExpr * create(const MCSymbol *Symbol, MCContext &Ctx)
MCSymbol * getSymbol(const GlobalValue *GV) const
void print(raw_ostream &OS, const MCAsmInfo *MAI) const
print - Print the value to the stream OS.
Reloc::Model getRelocationModel() const
Returns the code generation relocation model.
MachineBasicBlock * getMBB() const
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
A Module instance is used to store all the information related to an LLVM module. ...
const DataLayout & getDataLayout() const
Return information about data layout.
virtual void AddBlankLine()
AddBlankLine - Emit a blank line to a .s file to pretty it up.
void Lower(const MachineInstr *MI, MCInst &OutMI) const
MCContext & OutContext
This is the context for the output file that we are streaming.
static MCOperand createExpr(const MCExpr *Val)
MCSectionELF * getELFSection(StringRef Section, unsigned Type, unsigned Flags)
void EmitFunctionBodyEnd() override
EmitFunctionBodyEnd - Targets can override this to emit stuff after the last basic block in the funct...
MO_TLSGD - Represents the offset into the global offset table at which.
const MachineFunction * MF
The current machine function.
const char * getPrivateGlobalPrefix() const
virtual void emitDirectiveSetNoReorder()
A raw_ostream that writes to an SmallVector or SmallString.
bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const override
isBlockOnlyReachableByFallthough - Return true if the basic block has exactly one predecessor and the...
void PushSection()
Save the current and previous section on the section stack.
MachineBasicBlock reference.
unsigned getFunctionNumber() const
Return a unique ID for the current function.
const std::string & str() const
const Function * getFunction() const
getFunction - Return the LLVM function that this machine code represents
void Initialize(MCContext *C)
void EmitFunctionBodyStart() override
EmitFunctionBodyStart - Targets can override this to emit stuff before the first basic block in the f...
virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI)
Emit the given Instruction into the current section.
void EmitFunctionEntryLabel() override
EmitFunctionEntryLabel - Emit the label that is the entrypoint for the function.
virtual void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value)
Emit an ELF .size directive.
const std::vector< CalleeSavedInfo > & getCalleeSavedInfo() const
Returns a reference to call saved info vector for the current function.
const Triple & getTargetTriple() const
uint64_t getStackSize() const
Return the number of bytes that must be allocated to hold all of the fixed size frame objects...
MCSubtargetInfo * createMCSubtargetInfo(StringRef TheTriple, StringRef CPU, StringRef Features) const
createMCSubtargetInfo - Create a MCSubtargetInfo implementation.
virtual void emitDirectiveSetMicroMips()
const MipsABIInfo & getABI() const
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
static MCOperand createReg(unsigned Reg)
This file declares the MachineConstantPool class which is an abstract constant pool to keep track of ...
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
virtual void emitFrame(unsigned StackReg, unsigned StackSize, unsigned ReturnReg)
bool isImm() const
isImm - Tests if this is a MO_Immediate operand.
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
void LLVMInitializeMipsAsmPrinter()
bool isReg() const
isReg - Tests if this is a MO_Register operand.
virtual void emitDirectiveSetNoMacro()
Base class for the full range of assembler expressions which are needed for parsing.
virtual void emitDirectiveSetPush()
virtual void emitDirectiveEnd(StringRef Name)
Reg
All possible values of the reg field in the ModR/M byte.
Represent a reference to a symbol from inside an expression.
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted...
static bool contains(SmallPtrSetImpl< ConstantExpr * > &Cache, ConstantExpr *Expr, Constant *C)
virtual unsigned getFrameRegister(const MachineFunction &MF) const =0
Debug information queries.
MO_ABS_HI/LO - Represents the hi or low part of an absolute symbol address.
unsigned getNumOperands() const
Access to explicit operands of the instruction.
virtual void emitDirectiveModuleOddSPReg()
bool runOnMachineFunction(MachineFunction &MF) override
Emit the specified function out to the OutStreamer.
static const MCBinaryExpr * createSub(const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx)
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, unsigned AsmVariant, const char *ExtraCode, raw_ostream &O) override
Print the specified operand of MI, an INLINEASM instruction, using the specified assembler variant...
void printRegisterList(const MachineInstr *MI, int opNum, raw_ostream &O)
virtual void emitDirectiveModuleFP()
const MachineJumpTableInfo * getJumpTableInfo() const
getJumpTableInfo - Return the jump table info object for the current function.
bool isLittleEndian() const
Layout endianness...
This class is a data container for one entry in a MachineConstantPool.
MCContext & getContext() const
void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS)
void EmitEndOfAsmFile(Module &M) override
This virtual method can be overridden by targets that want to emit something at the end of their file...
Instances of this class represent a single low-level machine instruction.
const BasicBlock * getBasicBlock() const
getBasicBlock - Return the LLVM basic block that this instance corresponded to originally.
unsigned getOpcode() const
Returns the opcode of this MachineInstr.
MO_GPREL - Represents the offset from the current gp value to be used for the relocatable object file...
bool isMachineConstantPoolEntry() const
isMachineConstantPoolEntry - Return true if the MachineConstantPoolEntry is indeed a target specific ...
const MachineBasicBlock * getParent() const
const Constant * ConstVal
bool isDebugValue() const
Address of a global value.
unsigned getTargetFlags() const
Streaming machine code generation interface.
MO_GOT_CALL - Represents the offset into the global offset table at which the address of a call site ...
MCSymbol * createTempSymbol(bool CanBeUnnamed=true)
Create and return a new assembler temporary symbol with a unique but unspecified name.
MCSymbol * CurrentFnSym
The symbol for the current function.
LLVM Basic Block Representation.
const MCAsmInfo * MAI
Target Asm Printer information.
virtual void emitDirectiveSetNoMicroMips()
virtual void emitDirectiveSetMips16()
virtual void SwitchSection(MCSection *Section, const MCExpr *Subsection=nullptr)
Set the current section where code is being emitted to Section.
const MachineOperand & getOperand(unsigned i) const
void printSavedRegsBitmask()
virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, unsigned AsmVariant, const char *ExtraCode, raw_ostream &OS)
Print the specified operand of MI, an INLINEASM instruction, using the specified assembler variant...
void EmitInstruction(const MachineInstr *MI) override
Targets should implement this to emit instructions.
virtual void emitDirectiveSetMacro()
virtual void emitDirectiveNaN2008()
TargetMachine & TM
Target machine description.
static unsigned getNumOperandRegisters(unsigned Flag)
getNumOperandRegisters - Extract the number of registers field from the inline asm operand flag...
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value=0, unsigned ValueSize=1, unsigned MaxBytesToEmit=0)
Emit some number of copies of Value until the byte alignment ByteAlignment is reached.
void printUnsignedImm8(const MachineInstr *MI, int opNum, raw_ostream &O)
virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute)=0
Add the given Attribute to Symbol.
Address of a basic block.
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang","erlang-compatible garbage collector")
Ty * getInfo()
getInfo - Keep track of various per-function pieces of information for backends that would like to do...
int64_t getOffset() const
Return the offset from the symbol in this operand.
StringRef selectMipsCPU(const Triple &TT, StringRef CPU)
Select the Mips CPU for the given triple and cpu name.
virtual void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff)
MCSection * getTextSection() const
bool inMicroMipsMode() const
const char * getCurrentABIString() const
Emit Set directives.
MachineConstantPool * getConstantPool()
getConstantPool - Return the constant pool object for the current function.
bool runOnMachineFunction(MachineFunction &MF) override
Emit the specified function out to the OutStreamer.
bool inMips16Mode() const
MipsMCInstLower MCInstLowering
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
pred_iterator pred_begin()
MCSymbol * getSymbol() const
getSymbol - Return the MCSymbol for this basic block.
MO_GOTTPREL - Represents the offset from the thread pointer (Initial.
virtual void EmitDataRegion(MCDataRegionType Kind)
Note in the output the specified region Kind.
Triple - Helper class for working with autoconf configuration names.
void EmitAlignment(unsigned NumBits, const GlobalObject *GO=nullptr) const
Emit an alignment directive to the specified power of two boundary.
std::vector< MachineBasicBlock * >::const_iterator const_pred_iterator
virtual void emitDirectiveAbiCalls()
void setOpcode(unsigned Op)
bool isTargetNaCl() const
StringRef getTargetFeatureString() const
virtual void EmitLabel(MCSymbol *Symbol)
Emit a label for Symbol into the current section.
virtual void emitDirectiveOptionPic0()
void EmitGlobalConstant(const Constant *CV)
Print a general LLVM constant to the .s file.
const DataLayout * getDataLayout() const
Deprecated in 3.7, will be removed in 3.8.
MachineOperand class - Representation of each machine instruction operand.
virtual void emitDirectiveSetPop()
void EmitToStreamer(MCStreamer &S, const MCInst &Inst)
static Twine utohexstr(const uint64_t &Val)
void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O)
virtual void emitDirectiveSetAt()
virtual void emitDirectiveSetNoMips16()
MachineFrameInfo * getFrameInfo()
getFrameInfo - Return the frame info object for the current function.
void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O, const char *Modifier=nullptr)
void EmitStartOfAsmFile(Module &M) override
This virtual method can be overridden by targets that want to emit something at the start of their fi...
virtual void emitDirectiveInsn()
bool isLittleEndian() const
const char * MipsFCCToString(Mips::CondCode CC)
MO_TPREL_HI/LO - Represents the hi and low part of the offset from.
static const unsigned MIPS_NACL_BUNDLE_ALIGN
virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV)
void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O)
Representation of each machine instruction.
MachineOperandType getType() const
getType - Returns the MachineOperandType for this operand.
bundle_iterator< const MachineInstr, const_instr_iterator > const_iterator
void updateABIInfo(const PredicateLibrary &P)
virtual void emitDirectiveEnt(const MCSymbol &Symbol)
bool isLandingPad() const
isLandingPad - Returns true if the block is a landing pad.
StringRef getName() const
getName - Get the symbol name.
const MipsSubtarget * Subtarget
bool hasFnAttribute(Attribute::AttrKind Kind) const
Return true if the function has the attribute.
MCSymbol * getOrCreateSymbol(const Twine &Name)
Lookup the symbol inside with the specified Name.
.type _foo, STT_FUNC # aka
std::map< const char *, const llvm::Mips16HardFloatInfo::FuncSignature * > StubsNeeded
MCSymbol * GetBlockAddressSymbol(const BlockAddress *BA) const
Return the MCSymbol used to satisfy BlockAddress uses of the specified basic block.
MCSubtargetInfo - Generic base class for all target subtargets.
void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O)
union llvm::MachineConstantPoolEntry::@30 Val
The constant itself.
MipsFunctionInfo - This class is derived from MachineFunction private Mips target-specific informatio...
MCSectionELF - This represents a section on linux, lots of unix variants and some bare metal systems...
void printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O)
virtual MCSymbol * GetCPISymbol(unsigned CPID) const
Return the symbol for the specified constant pool entry.
unsigned getReg() const
getReg - Returns the register number.
const TargetLoweringObjectFile & getObjFileLowering() const
Return information about object file lowering.
bool PopSection()
Restore the current and previous section from the section stack.
virtual void emitDirectiveSetReorder()
static const char * getRegisterName(unsigned RegNo)
uint16_t getEncodingValue(unsigned RegNo) const
Returns the encoding for RegNo.
void forbidModuleDirective()
const MCObjectFileInfo * getObjectFileInfo() const
RegisterAsmPrinter - Helper template for registering a target specific assembly printer, for use in the target machine initialization function.
virtual void emitDirectiveNaNLegacy()
BasicBlockListType::iterator iterator
This class implements an extremely fast bulk output stream that can only output to a stream...
MCOperand LowerOperand(const MachineOperand &MO, unsigned offset=0) const
const Target & getTarget() const
const MipsFunctionInfo * MipsFI
const std::vector< MachineConstantPoolEntry > & getConstants() const
void emitFrameDirective()
Frame Directive.
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.
void addOperand(const MCOperand &Op)
virtual void print(raw_ostream &O, const Module *M) const
print - Print out the internal state of the pass.
StringRef - Represent a constant reference to a string, i.e.
const BlockAddress * getBlockAddress() const
Address of indexed Constant in Constant Pool.
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum, unsigned AsmVariant, const char *ExtraCode, raw_ostream &O) override
Print the specified operand of MI, an INLINEASM instruction, using the specified assembler variant as...
static GCMetadataPrinterRegistry::Add< OcamlGCMetadataPrinter > Y("ocaml","ocaml 3.10-compatible collector")
virtual void emitDirectiveSetNoAt()
void EmitBasicBlockEnd(const MachineBasicBlock &MBB) override
Targets can override this to emit stuff at the end of a basic block.
unsigned getRARegister() const
This method should return the register where the return address can be found.
bool isLayoutSuccessor(const MachineBasicBlock *MBB) const
isLayoutSuccessor - Return true if the specified MBB will be emitted immediately after this block...
Instances of this class represent operands of the MCInst class.
std::string lower() const