| //===- subzero/src/IceInstX8664.cpp - X86-64 instruction implementation ---===// |
| // |
| // The Subzero Code Generator |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// \brief This file defines X8664 specific data related to X8664 Instructions |
| /// and Instruction traits. |
| /// |
| /// These are declared in the IceTargetLoweringX8664Traits.h header file. |
| /// |
| /// This file also defines X8664 operand specific methods (dump and emit.) |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "IceInstX8664.h" |
| |
| #include "IceAssemblerX8664.h" |
| #include "IceCfg.h" |
| #include "IceCfgNode.h" |
| #include "IceConditionCodesX86.h" |
| #include "IceDefs.h" |
| #include "IceInst.h" |
| #include "IceOperand.h" |
| #include "IceRegistersX8664.h" |
| #include "IceTargetLowering.h" |
| #include "IceTargetLoweringX8664.h" |
| |
| namespace Ice { |
| namespace X8664 { |
| |
| const char *InstX86Base::getWidthString(Type Ty) { |
| return Traits::TypeAttributes[Ty].WidthString; |
| } |
| |
| const char *InstX86Base::getFldString(Type Ty) { |
| return Traits::TypeAttributes[Ty].FldString; |
| } |
| |
| typename Cond::BrCond InstX86Base::getOppositeCondition(BrCond Cond) { |
| return Traits::InstBrAttributes[Cond].Opposite; |
| } |
| |
| InstX86FakeRMW::InstX86FakeRMW(Cfg *Func, Operand *Data, Operand *Addr, |
| InstArithmetic::OpKind Op, Variable *Beacon) |
| : InstX86Base(Func, InstX86Base::FakeRMW, 3, nullptr), Op(Op) { |
| this->addSource(Data); |
| this->addSource(Addr); |
| this->addSource(Beacon); |
| } |
| |
| InstX86Mul::InstX86Mul(Cfg *Func, Variable *Dest, Variable *Source1, |
| Operand *Source2) |
| : InstX86Base(Func, InstX86Base::Mul, 2, Dest) { |
| this->addSource(Source1); |
| this->addSource(Source2); |
| } |
| |
| InstX86Shld::InstX86Shld(Cfg *Func, Variable *Dest, Variable *Source1, |
| Operand *Source2) |
| : InstX86Base(Func, InstX86Base::Shld, 3, Dest) { |
| this->addSource(Dest); |
| this->addSource(Source1); |
| this->addSource(Source2); |
| } |
| |
| InstX86Shrd::InstX86Shrd(Cfg *Func, Variable *Dest, Variable *Source1, |
| Operand *Source2) |
| : InstX86Base(Func, InstX86Base::Shrd, 3, Dest) { |
| this->addSource(Dest); |
| this->addSource(Source1); |
| this->addSource(Source2); |
| } |
| |
| InstX86Label::InstX86Label(Cfg *Func, TargetLowering *Target) |
| : InstX86Base(Func, InstX86Base::Label, 0, nullptr), |
| LabelNumber(Target->makeNextLabelNumber()) { |
| if (BuildDefs::dump()) { |
| Name = GlobalString::createWithString( |
| Func->getContext(), ".L" + Func->getFunctionName() + "$local$__" + |
| std::to_string(LabelNumber)); |
| } else { |
| Name = GlobalString::createWithoutString(Func->getContext()); |
| } |
| } |
| |
| InstX86Br::InstX86Br(Cfg *Func, const CfgNode *TargetTrue, |
| const CfgNode *TargetFalse, const InstX86Label *Label, |
| BrCond Condition, Mode Kind) |
| : InstX86Base(Func, InstX86Base::Br, 0, nullptr), Condition(Condition), |
| TargetTrue(TargetTrue), TargetFalse(TargetFalse), Label(Label), |
| Kind(Kind) {} |
| |
| bool InstX86Br::optimizeBranch(const CfgNode *NextNode) { |
| // If there is no next block, then there can be no fallthrough to optimize. |
| if (NextNode == nullptr) |
| return false; |
| // Intra-block conditional branches can't be optimized. |
| if (Label) |
| return false; |
| // If there is no fallthrough node, such as a non-default case label for a |
| // switch instruction, then there is no opportunity to optimize. |
| if (getTargetFalse() == nullptr) |
| return false; |
| |
| // Unconditional branch to the next node can be removed. |
| if (Condition == Cond::Br_None && getTargetFalse() == NextNode) { |
| assert(getTargetTrue() == nullptr); |
| this->setDeleted(); |
| return true; |
| } |
| // If the fallthrough is to the next node, set fallthrough to nullptr to |
| // indicate. |
| if (getTargetFalse() == NextNode) { |
| TargetFalse = nullptr; |
| return true; |
| } |
| // If TargetTrue is the next node, and TargetFalse is not nullptr (which was |
| // already tested above), then invert the branch condition, swap the targets, |
| // and set new fallthrough to nullptr. |
| if (getTargetTrue() == NextNode) { |
| assert(Condition != Cond::Br_None); |
| Condition = this->getOppositeCondition(Condition); |
| TargetTrue = getTargetFalse(); |
| TargetFalse = nullptr; |
| return true; |
| } |
| return false; |
| } |
| |
| bool InstX86Br::repointEdges(CfgNode *OldNode, CfgNode *NewNode) { |
| bool Found = false; |
| if (TargetFalse == OldNode) { |
| TargetFalse = NewNode; |
| Found = true; |
| } |
| if (TargetTrue == OldNode) { |
| TargetTrue = NewNode; |
| Found = true; |
| } |
| return Found; |
| } |
| |
| InstX86Jmp::InstX86Jmp(Cfg *Func, Operand *Target) |
| : InstX86Base(Func, InstX86Base::Jmp, 1, nullptr) { |
| this->addSource(Target); |
| } |
| |
| InstX86Call::InstX86Call(Cfg *Func, Variable *Dest, Operand *CallTarget) |
| : InstX86Base(Func, InstX86Base::Call, 1, Dest) { |
| this->HasSideEffects = true; |
| this->addSource(CallTarget); |
| } |
| |
| InstX86Movmsk::InstX86Movmsk(Cfg *Func, Variable *Dest, Operand *Source) |
| : InstX86Base(Func, InstX86Base::Movmsk, 1, Dest) { |
| this->addSource(Source); |
| } |
| |
| InstX86Cmov::InstX86Cmov(Cfg *Func, Variable *Dest, Operand *Source, |
| BrCond Condition) |
| : InstX86Base(Func, InstX86Base::Cmov, 2, Dest), Condition(Condition) { |
| // The final result is either the original Dest, or Source, so mark both as |
| // sources. |
| this->addSource(Dest); |
| this->addSource(Source); |
| } |
| |
| InstX86Cmpps::InstX86Cmpps(Cfg *Func, Variable *Dest, Operand *Source, |
| CmppsCond Condition) |
| : InstX86Base(Func, InstX86Base::Cmpps, 2, Dest), Condition(Condition) { |
| this->addSource(Dest); |
| this->addSource(Source); |
| } |
| |
| InstX86Cmpxchg::InstX86Cmpxchg(Cfg *Func, Operand *DestOrAddr, Variable *Eax, |
| Variable *Desired, bool Locked) |
| : InstX86BaseLockable(Func, InstX86Base::Cmpxchg, 3, |
| llvm::dyn_cast<Variable>(DestOrAddr), Locked) { |
| constexpr uint16_t Encoded_rAX = 0; |
| (void)Encoded_rAX; |
| assert(Traits::getEncodedGPR(Eax->getRegNum()) == Encoded_rAX); |
| this->addSource(DestOrAddr); |
| this->addSource(Eax); |
| this->addSource(Desired); |
| } |
| |
| InstX86Cmpxchg8b::InstX86Cmpxchg8b(Cfg *Func, X86OperandMem *Addr, |
| Variable *Edx, Variable *Eax, Variable *Ecx, |
| Variable *Ebx, bool Locked) |
| : InstX86BaseLockable(Func, InstX86Base::Cmpxchg, 5, nullptr, Locked) { |
| assert(Edx->getRegNum() == RegisterSet::Reg_edx); |
| assert(Eax->getRegNum() == RegisterSet::Reg_eax); |
| assert(Ecx->getRegNum() == RegisterSet::Reg_ecx); |
| assert(Ebx->getRegNum() == RegisterSet::Reg_ebx); |
| this->addSource(Addr); |
| this->addSource(Edx); |
| this->addSource(Eax); |
| this->addSource(Ecx); |
| this->addSource(Ebx); |
| } |
| |
| InstX86Cvt::InstX86Cvt(Cfg *Func, Variable *Dest, Operand *Source, |
| CvtVariant Variant) |
| : InstX86Base(Func, InstX86Base::Cvt, 1, Dest), Variant(Variant) { |
| this->addSource(Source); |
| } |
| |
| InstX86Icmp::InstX86Icmp(Cfg *Func, Operand *Src0, Operand *Src1) |
| : InstX86Base(Func, InstX86Base::Icmp, 2, nullptr) { |
| this->addSource(Src0); |
| this->addSource(Src1); |
| } |
| |
| InstX86Ucomiss::InstX86Ucomiss(Cfg *Func, Operand *Src0, Operand *Src1) |
| : InstX86Base(Func, InstX86Base::Ucomiss, 2, nullptr) { |
| this->addSource(Src0); |
| this->addSource(Src1); |
| } |
| |
| InstX86UD2::InstX86UD2(Cfg *Func) |
| : InstX86Base(Func, InstX86Base::UD2, 0, nullptr) {} |
| |
| InstX86Int3::InstX86Int3(Cfg *Func) |
| : InstX86Base(Func, InstX86Base::Int3, 0, nullptr) {} |
| |
| InstX86Test::InstX86Test(Cfg *Func, Operand *Src1, Operand *Src2) |
| : InstX86Base(Func, InstX86Base::Test, 2, nullptr) { |
| this->addSource(Src1); |
| this->addSource(Src2); |
| } |
| |
| InstX86Mfence::InstX86Mfence(Cfg *Func) |
| : InstX86Base(Func, InstX86Base::Mfence, 0, nullptr) { |
| this->HasSideEffects = true; |
| } |
| |
| InstX86Store::InstX86Store(Cfg *Func, Operand *Value, X86Operand *Mem) |
| : InstX86Base(Func, InstX86Base::Store, 2, nullptr) { |
| this->addSource(Value); |
| this->addSource(Mem); |
| } |
| |
| InstX86StoreP::InstX86StoreP(Cfg *Func, Variable *Value, X86OperandMem *Mem) |
| : InstX86Base(Func, InstX86Base::StoreP, 2, nullptr) { |
| this->addSource(Value); |
| this->addSource(Mem); |
| } |
| |
| InstX86StoreQ::InstX86StoreQ(Cfg *Func, Operand *Value, X86OperandMem *Mem) |
| : InstX86Base(Func, InstX86Base::StoreQ, 2, nullptr) { |
| this->addSource(Value); |
| this->addSource(Mem); |
| } |
| |
| InstX86StoreD::InstX86StoreD(Cfg *Func, Operand *Value, X86OperandMem *Mem) |
| : InstX86Base(Func, InstX86Base::StoreD, 2, nullptr) { |
| this->addSource(Value); |
| this->addSource(Mem); |
| } |
| |
| InstX86Nop::InstX86Nop(Cfg *Func, NopVariant Variant) |
| : InstX86Base(Func, InstX86Base::Nop, 0, nullptr), Variant(Variant) {} |
| |
| InstX86Pop::InstX86Pop(Cfg *Func, Variable *Dest) |
| : InstX86Base(Func, InstX86Base::Pop, 0, Dest) { |
| // A pop instruction affects the stack pointer and so it should not be |
| // allowed to be automatically dead-code eliminated. (The corresponding push |
| // instruction doesn't need this treatment because it has no dest variable |
| // and therefore won't be dead-code eliminated.) This is needed for |
| // late-stage liveness analysis (e.g. asm-verbose mode). |
| this->HasSideEffects = true; |
| } |
| |
| InstX86Push::InstX86Push(Cfg *Func, Operand *Source) |
| : InstX86Base(Func, InstX86Base::Push, 1, nullptr) { |
| this->addSource(Source); |
| } |
| |
| InstX86Ret::InstX86Ret(Cfg *Func, Variable *Source) |
| : InstX86Base(Func, InstX86Base::Ret, Source ? 1 : 0, nullptr) { |
| if (Source) |
| this->addSource(Source); |
| } |
| |
| InstX86Setcc::InstX86Setcc(Cfg *Func, Variable *Dest, BrCond Cond) |
| : InstX86Base(Func, InstX86Base::Setcc, 0, Dest), Condition(Cond) {} |
| |
| InstX86Xadd::InstX86Xadd(Cfg *Func, Operand *Dest, Variable *Source, |
| bool Locked) |
| : InstX86BaseLockable(Func, InstX86Base::Xadd, 2, |
| llvm::dyn_cast<Variable>(Dest), Locked) { |
| this->addSource(Dest); |
| this->addSource(Source); |
| } |
| |
| InstX86Xchg::InstX86Xchg(Cfg *Func, Operand *Dest, Variable *Source) |
| : InstX86Base(Func, InstX86Base::Xchg, 2, llvm::dyn_cast<Variable>(Dest)) { |
| this->addSource(Dest); |
| this->addSource(Source); |
| } |
| |
| InstX86IacaStart::InstX86IacaStart(Cfg *Func) |
| : InstX86Base(Func, InstX86Base::IacaStart, 0, nullptr) { |
| assert(getFlags().getAllowIacaMarks()); |
| } |
| |
| InstX86IacaEnd::InstX86IacaEnd(Cfg *Func) |
| : InstX86Base(Func, InstX86Base::IacaEnd, 0, nullptr) { |
| assert(getFlags().getAllowIacaMarks()); |
| } |
| |
| // ======================== Dump routines ======================== // |
| |
| void InstX86Base::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "[" << Traits::TargetName << "] "; |
| Inst::dump(Func); |
| } |
| |
| void InstX86FakeRMW::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Type Ty = getData()->getType(); |
| Str << "rmw " << InstArithmetic::getOpName(getOp()) << " " << Ty << " *"; |
| getAddr()->dump(Func); |
| Str << ", "; |
| getData()->dump(Func); |
| Str << ", beacon="; |
| getBeacon()->dump(Func); |
| } |
| |
| void InstX86Label::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Str << getLabelName() << ":"; |
| } |
| |
| void InstX86Label::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->bindLocalLabel(LabelNumber); |
| if (OffsetReloc != nullptr) { |
| Asm->bindRelocOffset(OffsetReloc); |
| } |
| } |
| |
| void InstX86Label::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << getLabelName() << ":"; |
| } |
| |
| void InstX86Br::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Str << "\t"; |
| |
| if (Condition == Cond::Br_None) { |
| Str << "jmp"; |
| } else { |
| Str << Traits::InstBrAttributes[Condition].EmitString; |
| } |
| |
| if (Label) { |
| Str << "\t" << Label->getLabelName(); |
| } else { |
| if (Condition == Cond::Br_None) { |
| Str << "\t" << getTargetFalse()->getAsmName(); |
| } else { |
| Str << "\t" << getTargetTrue()->getAsmName(); |
| if (getTargetFalse()) { |
| Str << "\n\t" |
| "jmp\t" |
| << getTargetFalse()->getAsmName(); |
| } |
| } |
| } |
| } |
| |
| void InstX86Br::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| if (Label) { |
| auto *L = Asm->getOrCreateLocalLabel(Label->getLabelNumber()); |
| if (Condition == Cond::Br_None) { |
| Asm->jmp(L, isNear()); |
| } else { |
| Asm->j(Condition, L, isNear()); |
| } |
| } else { |
| if (Condition == Cond::Br_None) { |
| auto *L = Asm->getOrCreateCfgNodeLabel(getTargetFalse()->getIndex()); |
| assert(!getTargetTrue()); |
| Asm->jmp(L, isNear()); |
| } else { |
| auto *L = Asm->getOrCreateCfgNodeLabel(getTargetTrue()->getIndex()); |
| Asm->j(Condition, L, isNear()); |
| if (getTargetFalse()) { |
| auto *L2 = Asm->getOrCreateCfgNodeLabel(getTargetFalse()->getIndex()); |
| Asm->jmp(L2, isNear()); |
| } |
| } |
| } |
| } |
| |
| void InstX86Br::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "br "; |
| |
| if (Condition == Cond::Br_None) { |
| if (Label) { |
| Str << "label %" << Label->getLabelName(); |
| } else { |
| Str << "label %" << getTargetFalse()->getName(); |
| } |
| return; |
| } |
| |
| Str << Traits::InstBrAttributes[Condition].DisplayString; |
| if (Label) { |
| Str << ", label %" << Label->getLabelName(); |
| } else { |
| Str << ", label %" << getTargetTrue()->getName(); |
| if (getTargetFalse()) { |
| Str << ", label %" << getTargetFalse()->getName(); |
| } |
| } |
| |
| Str << " // (" << (isNear() ? "near" : "far") << " jump)"; |
| } |
| |
| void InstX86Jmp::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| const Operand *Src = this->getSrc(0); |
| if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(Src)) { |
| Str << "\t" |
| "jmp" |
| "\t" |
| << CR->getName(); |
| return; |
| } |
| Str << "\t" |
| "jmp" |
| "\t*"; |
| getJmpTarget()->emit(Func); |
| } |
| |
| void InstX86Jmp::emitIAS(const Cfg *Func) const { |
| // Note: Adapted (mostly copied) from |
| // InstX86Call::emitIAS(). |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Operand *Target = getJmpTarget(); |
| if (const auto *Var = llvm::dyn_cast<Variable>(Target)) { |
| if (Var->hasReg()) { |
| Asm->jmp(Traits::getEncodedGPR(Var->getRegNum())); |
| } else { |
| // The jmp instruction with a memory operand should be possible to |
| // encode, but it isn't a valid sandboxed instruction, and there |
| // shouldn't be a register allocation issue to jump through a scratch |
| // register, so we don't really need to bother implementing it. |
| llvm::report_fatal_error("Assembler can't jmp to memory operand"); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Target)) { |
| (void)Mem; |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| llvm::report_fatal_error("Assembler can't jmp to memory operand"); |
| } else if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(Target)) { |
| Asm->jmp(CR); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Target)) { |
| // NaCl trampoline calls refer to an address within the sandbox directly. |
| // This is usually only needed for non-IRT builds and otherwise not very |
| // portable or stable. Usually this is only done for "calls" and not jumps. |
| Asm->jmp(AssemblerImmediate(Imm->getValue())); |
| } else { |
| llvm::report_fatal_error("Unexpected operand type"); |
| } |
| } |
| |
| void InstX86Jmp::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "jmp "; |
| getJmpTarget()->dump(Func); |
| } |
| |
| void InstX86Call::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Str << "\t" |
| "call\t"; |
| Operand *CallTarget = getCallTarget(); |
| auto *Target = InstX86Base::getTarget(Func); |
| if (const auto *CI = llvm::dyn_cast<ConstantInteger32>(CallTarget)) { |
| // Emit without a leading '$'. |
| Str << CI->getValue(); |
| } else if (const auto DirectCallTarget = |
| llvm::dyn_cast<ConstantRelocatable>(CallTarget)) { |
| DirectCallTarget->emitWithoutPrefix(Target); |
| } else { |
| Str << "*"; |
| CallTarget->emit(Func); |
| } |
| } |
| |
| void InstX86Call::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Operand *CallTarget = getCallTarget(); |
| auto *Target = InstX86Base::getTarget(Func); |
| if (const auto *Var = llvm::dyn_cast<Variable>(CallTarget)) { |
| if (Var->hasReg()) { |
| Asm->call(Traits::getEncodedGPR(Var->getRegNum())); |
| } else { |
| Asm->call(AsmAddress(Var, Target)); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(CallTarget)) { |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| Asm->call(AsmAddress(Mem, Asm, Target)); |
| } else if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(CallTarget)) { |
| Asm->call(CR); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(CallTarget)) { |
| Asm->call(AssemblerImmediate(Imm->getValue())); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void InstX86Call::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| if (this->getDest()) { |
| this->dumpDest(Func); |
| Str << " = "; |
| } |
| Str << "call "; |
| getCallTarget()->dump(Func); |
| } |
| |
| // The this->Opcode parameter needs to be char* and not std::string because of |
| // template issues. |
| |
| void InstX86Base::emitTwoAddress(const Cfg *Func, const char *Opcode, |
| const char *Suffix) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(getSrcSize() == 2); |
| Operand *Dest = getDest(); |
| if (Dest == nullptr) |
| Dest = getSrc(0); |
| assert(Dest == getSrc(0)); |
| Operand *Src1 = getSrc(1); |
| Str << "\t" << Opcode << Suffix |
| << InstX86Base::getWidthString(Dest->getType()) << "\t"; |
| Src1->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } |
| |
| void emitIASOpTyGPR(const Cfg *Func, Type Ty, const Operand *Op, |
| const GPREmitterOneOp &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| if (const auto *Var = llvm::dyn_cast<Variable>(Op)) { |
| if (Var->hasReg()) { |
| // We cheat a little and use GPRRegister even for byte operations. |
| GPRRegister VarReg = Traits::getEncodedGPR(Var->getRegNum()); |
| (Asm->*(Emitter.Reg))(Ty, VarReg); |
| } else { |
| AsmAddress StackAddr(AsmAddress(Var, Target)); |
| (Asm->*(Emitter.Addr))(Ty, StackAddr); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Op)) { |
| Mem->emitSegmentOverride(Asm); |
| (Asm->*(Emitter.Addr))(Ty, AsmAddress(Mem, Asm, Target)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| template <bool VarCanBeByte, bool SrcCanBeByte> |
| void emitIASRegOpTyGPR(const Cfg *Func, Type Ty, const Variable *Var, |
| const Operand *Src, const GPREmitterRegOp &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(Var->hasReg()); |
| // We cheat a little and use GPRRegister even for byte operations. |
| GPRRegister VarReg = VarCanBeByte ? Traits::getEncodedGPR(Var->getRegNum()) |
| : Traits::getEncodedGPR(Var->getRegNum()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| GPRRegister SrcReg = SrcCanBeByte |
| ? Traits::getEncodedGPR(SrcVar->getRegNum()) |
| : Traits::getEncodedGPR(SrcVar->getRegNum()); |
| (Asm->*(Emitter.GPRGPR))(Ty, VarReg, SrcReg); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| (Asm->*(Emitter.GPRAddr))(Ty, VarReg, SrcStackAddr); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| Mem->emitSegmentOverride(Asm); |
| (Asm->*(Emitter.GPRAddr))(Ty, VarReg, AsmAddress(Mem, Asm, Target)); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Src)) { |
| (Asm->*(Emitter.GPRImm))(Ty, VarReg, AssemblerImmediate(Imm->getValue())); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger64>(Src)) { |
| assert(Utils::IsInt(32, Imm->getValue())); |
| (Asm->*(Emitter.GPRImm))(Ty, VarReg, AssemblerImmediate(Imm->getValue())); |
| } else if (const auto *Reloc = llvm::dyn_cast<ConstantRelocatable>(Src)) { |
| const auto FixupKind = (Reloc->getName().hasStdString() && |
| Reloc->getName().toString() == GlobalOffsetTable) |
| ? FK_GotPC |
| : FK_Abs; |
| AssemblerFixup *Fixup = Asm->createFixup(FixupKind, Reloc); |
| (Asm->*(Emitter.GPRImm))(Ty, VarReg, AssemblerImmediate(Fixup)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASAddrOpTyGPR(const Cfg *Func, Type Ty, const AsmAddress &Addr, |
| const Operand *Src, const GPREmitterAddrOp &Emitter) { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| // Src can only be Reg or AssemblerImmediate. |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| assert(SrcVar->hasReg()); |
| GPRRegister SrcReg = Traits::getEncodedGPR(SrcVar->getRegNum()); |
| (Asm->*(Emitter.AddrGPR))(Ty, Addr, SrcReg); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Src)) { |
| (Asm->*(Emitter.AddrImm))(Ty, Addr, AssemblerImmediate(Imm->getValue())); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger64>(Src)) { |
| assert(Utils::IsInt(32, Imm->getValue())); |
| (Asm->*(Emitter.AddrImm))(Ty, Addr, AssemblerImmediate(Imm->getValue())); |
| } else if (const auto *Reloc = llvm::dyn_cast<ConstantRelocatable>(Src)) { |
| const auto FixupKind = (Reloc->getName().hasStdString() && |
| Reloc->getName().toString() == GlobalOffsetTable) |
| ? FK_GotPC |
| : FK_Abs; |
| AssemblerFixup *Fixup = Asm->createFixup(FixupKind, Reloc); |
| (Asm->*(Emitter.AddrImm))(Ty, Addr, AssemblerImmediate(Fixup)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASAsAddrOpTyGPR(const Cfg *Func, Type Ty, const Operand *Op0, |
| const Operand *Op1, const GPREmitterAddrOp &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| if (const auto *Op0Var = llvm::dyn_cast<Variable>(Op0)) { |
| assert(!Op0Var->hasReg()); |
| AsmAddress StackAddr(AsmAddress(Op0Var, Target)); |
| emitIASAddrOpTyGPR(Func, Ty, StackAddr, Op1, Emitter); |
| } else if (const auto *Op0Mem = llvm::dyn_cast<X86OperandMem>(Op0)) { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Op0Mem->emitSegmentOverride(Asm); |
| emitIASAddrOpTyGPR(Func, Ty, AsmAddress(Op0Mem, Asm, Target), Op1, Emitter); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASGPRShift(const Cfg *Func, Type Ty, const Variable *Var, |
| const Operand *Src, const GPREmitterShiftOp &Emitter) { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| // Technically, the Dest Var can be mem as well, but we only use Reg. We can |
| // extend this to check Dest if we decide to use that form. |
| assert(Var->hasReg()); |
| // We cheat a little and use GPRRegister even for byte operations. |
| GPRRegister VarReg = Traits::getEncodedGPR(Var->getRegNum()); |
| // Src must be reg == ECX or an Imm8. This is asserted by the assembler. |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| assert(SrcVar->hasReg()); |
| GPRRegister SrcReg = Traits::getEncodedGPR(SrcVar->getRegNum()); |
| (Asm->*(Emitter.GPRGPR))(Ty, VarReg, SrcReg); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Src)) { |
| (Asm->*(Emitter.GPRImm))(Ty, VarReg, AssemblerImmediate(Imm->getValue())); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger64>(Src)) { |
| assert(Utils::IsInt(32, Imm->getValue())); |
| (Asm->*(Emitter.GPRImm))(Ty, VarReg, AssemblerImmediate(Imm->getValue())); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASGPRShiftDouble(const Cfg *Func, const Variable *Dest, |
| const Operand *Src1Op, const Operand *Src2Op, |
| const GPREmitterShiftD &Emitter) { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| // Dest can be reg or mem, but we only use the reg variant. |
| assert(Dest->hasReg()); |
| GPRRegister DestReg = Traits::getEncodedGPR(Dest->getRegNum()); |
| // SrcVar1 must be reg. |
| const auto *SrcVar1 = llvm::cast<Variable>(Src1Op); |
| assert(SrcVar1->hasReg()); |
| GPRRegister SrcReg = Traits::getEncodedGPR(SrcVar1->getRegNum()); |
| Type Ty = SrcVar1->getType(); |
| // Src2 can be the implicit CL register or an immediate. |
| if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Src2Op)) { |
| (Asm->*(Emitter.GPRGPRImm))(Ty, DestReg, SrcReg, |
| AssemblerImmediate(Imm->getValue())); |
| } else { |
| assert(llvm::cast<Variable>(Src2Op)->getRegNum() == RegisterSet::Reg_cl); |
| (Asm->*(Emitter.GPRGPR))(Ty, DestReg, SrcReg); |
| } |
| } |
| |
| void emitIASXmmShift(const Cfg *Func, Type Ty, const Variable *Var, |
| const Operand *Src, const XmmEmitterShiftOp &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(Var->hasReg()); |
| XmmRegister VarReg = Traits::getEncodedXmm(Var->getRegNum()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| XmmRegister SrcReg = Traits::getEncodedXmm(SrcVar->getRegNum()); |
| (Asm->*(Emitter.XmmXmm))(Ty, VarReg, SrcReg); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| (Asm->*(Emitter.XmmAddr))(Ty, VarReg, SrcStackAddr); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| (Asm->*(Emitter.XmmAddr))(Ty, VarReg, AsmAddress(Mem, Asm, Target)); |
| } else if (const auto *Imm = llvm::dyn_cast<ConstantInteger32>(Src)) { |
| (Asm->*(Emitter.XmmImm))(Ty, VarReg, AssemblerImmediate(Imm->getValue())); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASRegOpTyXMM(const Cfg *Func, Type Ty, const Variable *Var, |
| const Operand *Src, const XmmEmitterRegOp &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(Var->hasReg()); |
| XmmRegister VarReg = Traits::getEncodedXmm(Var->getRegNum()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| XmmRegister SrcReg = Traits::getEncodedXmm(SrcVar->getRegNum()); |
| (Asm->*(Emitter.XmmXmm))(Ty, VarReg, SrcReg); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| (Asm->*(Emitter.XmmAddr))(Ty, VarReg, SrcStackAddr); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| (Asm->*(Emitter.XmmAddr))(Ty, VarReg, AsmAddress(Mem, Asm, Target)); |
| } else if (const auto *Imm = llvm::dyn_cast<Constant>(Src)) { |
| (Asm->*(Emitter.XmmAddr))(Ty, VarReg, AsmAddress(Imm, Asm)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| template <typename DReg_t, typename SReg_t, DReg_t (*destEnc)(RegNumT), |
| SReg_t (*srcEnc)(RegNumT)> |
| void emitIASCastRegOp(const Cfg *Func, Type DestTy, const Variable *Dest, |
| Type SrcTy, const Operand *Src, |
| const CastEmitterRegOp<DReg_t, SReg_t> &Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(Dest->hasReg()); |
| DReg_t DestReg = destEnc(Dest->getRegNum()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| SReg_t SrcReg = srcEnc(SrcVar->getRegNum()); |
| (Asm->*(Emitter.RegReg))(DestTy, DestReg, SrcTy, SrcReg); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| (Asm->*(Emitter.RegAddr))(DestTy, DestReg, SrcTy, SrcStackAddr); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| Mem->emitSegmentOverride(Asm); |
| (Asm->*(Emitter.RegAddr))(DestTy, DestReg, SrcTy, |
| AsmAddress(Mem, Asm, Target)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| template <typename DReg_t, typename SReg_t, DReg_t (*destEnc)(RegNumT), |
| SReg_t (*srcEnc)(RegNumT)> |
| void emitIASThreeOpImmOps(const Cfg *Func, Type DispatchTy, |
| const Variable *Dest, const Operand *Src0, |
| const Operand *Src1, |
| const ThreeOpImmEmitter<DReg_t, SReg_t> Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| // This only handles Dest being a register, and Src1 being an immediate. |
| assert(Dest->hasReg()); |
| DReg_t DestReg = destEnc(Dest->getRegNum()); |
| AssemblerImmediate Imm(llvm::cast<ConstantInteger32>(Src1)->getValue()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src0)) { |
| if (SrcVar->hasReg()) { |
| SReg_t SrcReg = srcEnc(SrcVar->getRegNum()); |
| (Asm->*(Emitter.RegRegImm))(DispatchTy, DestReg, SrcReg, Imm); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| (Asm->*(Emitter.RegAddrImm))(DispatchTy, DestReg, SrcStackAddr, Imm); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src0)) { |
| Mem->emitSegmentOverride(Asm); |
| (Asm->*(Emitter.RegAddrImm))(DispatchTy, DestReg, |
| AsmAddress(Mem, Asm, Target), Imm); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void emitIASMovlikeXMM(const Cfg *Func, const Variable *Dest, |
| const Operand *Src, const XmmEmitterMovOps Emitter) { |
| auto *Target = InstX86Base::getTarget(Func); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| if (Dest->hasReg()) { |
| XmmRegister DestReg = Traits::getEncodedXmm(Dest->getRegNum()); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| (Asm->*(Emitter.XmmXmm))(DestReg, |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } else { |
| AsmAddress StackAddr(AsmAddress(SrcVar, Target)); |
| (Asm->*(Emitter.XmmAddr))(DestReg, StackAddr); |
| } |
| } else if (const auto *SrcMem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| assert(SrcMem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| (Asm->*(Emitter.XmmAddr))(DestReg, AsmAddress(SrcMem, Asm, Target)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } else { |
| AsmAddress StackAddr(AsmAddress(Dest, Target)); |
| // Src must be a register in this case. |
| const auto *SrcVar = llvm::cast<Variable>(Src); |
| assert(SrcVar->hasReg()); |
| (Asm->*(Emitter.AddrXmm))(StackAddr, |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } |
| } |
| |
| void InstX86Movmsk::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| this->dumpDest(Func); |
| Str << " = movmsk." << this->getSrc(0)->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Movmsk::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Type SrcTy = this->getSrc(0)->getType(); |
| assert(isVectorType(SrcTy)); |
| switch (SrcTy) { |
| case IceType_v16i8: |
| Str << "\t" |
| "pmovmskb" |
| "\t"; |
| break; |
| case IceType_v4i32: |
| case IceType_v4f32: |
| Str << "\t" |
| "movmskps" |
| "\t"; |
| break; |
| default: |
| llvm_unreachable("Unexpected operand type"); |
| } |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Movmsk::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| const Variable *Dest = this->getDest(); |
| const Variable *Src = llvm::cast<Variable>(this->getSrc(0)); |
| const Type DestTy = Dest->getType(); |
| (void)DestTy; |
| const Type SrcTy = Src->getType(); |
| assert(isVectorType(SrcTy)); |
| assert(isScalarIntegerType(DestTy)); |
| assert(DestTy == IceType_i32 || DestTy == IceType_i64); |
| XmmRegister SrcReg = Traits::getEncodedXmm(Src->getRegNum()); |
| GPRRegister DestReg = Traits::getEncodedGPR(Dest->getRegNum()); |
| Asm->movmsk(SrcTy, DestReg, SrcReg); |
| } |
| |
| void InstX86Sqrt::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Type Ty = this->getSrc(0)->getType(); |
| assert(isScalarFloatingType(Ty)); |
| Str << "\t" |
| "sqrt" |
| << Traits::TypeAttributes[Ty].SpSdString << "\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Div::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 3); |
| Operand *Src1 = this->getSrc(1); |
| Str << "\t" << this->Opcode << this->getWidthString(Src1->getType()) << "\t"; |
| Src1->emit(Func); |
| } |
| |
| void InstX86Div::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| const Operand *Src = this->getSrc(1); |
| Type Ty = Src->getType(); |
| static GPREmitterOneOp Emitter = {&Assembler::div, &Assembler::div}; |
| emitIASOpTyGPR(Func, Ty, Src, Emitter); |
| } |
| |
| void InstX86Idiv::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 3); |
| Operand *Src1 = this->getSrc(1); |
| Str << "\t" << this->Opcode << this->getWidthString(Src1->getType()) << "\t"; |
| Src1->emit(Func); |
| } |
| |
| void InstX86Idiv::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| const Operand *Src = this->getSrc(1); |
| Type Ty = Src->getType(); |
| static const GPREmitterOneOp Emitter = {&Assembler::idiv, &Assembler::idiv}; |
| emitIASOpTyGPR(Func, Ty, Src, Emitter); |
| } |
| |
| // pblendvb and blendvps take xmm0 as a final implicit argument. |
| |
| void emitVariableBlendInst(const char *Opcode, const Inst *Instr, |
| const Cfg *Func) { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(Instr->getSrcSize() == 3); |
| assert(llvm::cast<Variable>(Instr->getSrc(2))->getRegNum() == |
| RegisterSet::Reg_xmm0); |
| Str << "\t" << Opcode << "\t"; |
| Instr->getSrc(1)->emit(Func); |
| Str << ", "; |
| Instr->getDest()->emit(Func); |
| } |
| |
| void emitIASVariableBlendInst(const Inst *Instr, const Cfg *Func, |
| const XmmEmitterRegOp &Emitter) { |
| assert(Instr->getSrcSize() == 3); |
| assert(llvm::cast<Variable>(Instr->getSrc(2))->getRegNum() == |
| RegisterSet::Reg_xmm0); |
| const Variable *Dest = Instr->getDest(); |
| const Operand *Src = Instr->getSrc(1); |
| emitIASRegOpTyXMM(Func, Dest->getType(), Dest, Src, Emitter); |
| } |
| |
| void InstX86Blendvps::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| emitVariableBlendInst(this->Opcode, this, Func); |
| } |
| |
| void InstX86Blendvps::emitIAS(const Cfg *Func) const { |
| static const XmmEmitterRegOp Emitter = {&Assembler::blendvps, |
| &Assembler::blendvps}; |
| emitIASVariableBlendInst(this, Func, Emitter); |
| } |
| |
| void InstX86Pblendvb::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| emitVariableBlendInst(this->Opcode, this, Func); |
| } |
| |
| void InstX86Pblendvb::emitIAS(const Cfg *Func) const { |
| static const XmmEmitterRegOp Emitter = {&Assembler::pblendvb, |
| &Assembler::pblendvb}; |
| emitIASVariableBlendInst(this, Func, Emitter); |
| } |
| |
| void InstX86Imul::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Variable *Dest = this->getDest(); |
| if (isByteSizedArithType(Dest->getType())) { |
| // The 8-bit version of imul only allows the form "imul r/m8". |
| const auto *Src0Var = llvm::dyn_cast<Variable>(this->getSrc(0)); |
| (void)Src0Var; |
| assert(Src0Var->getRegNum() == RegisterSet::Reg_al); |
| Str << "\t" |
| "imulb\t"; |
| this->getSrc(1)->emit(Func); |
| } else if (llvm::isa<Constant>(this->getSrc(1))) { |
| Str << "\t" |
| "imul" |
| << this->getWidthString(Dest->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } else { |
| this->emitTwoAddress(Func, this->Opcode); |
| } |
| } |
| |
| void InstX86Imul::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| const Variable *Var = this->getDest(); |
| Type Ty = Var->getType(); |
| const Operand *Src = this->getSrc(1); |
| if (isByteSizedArithType(Ty)) { |
| // The 8-bit version of imul only allows the form "imul r/m8". |
| const auto *Src0Var = llvm::dyn_cast<Variable>(this->getSrc(0)); |
| (void)Src0Var; |
| assert(Src0Var->getRegNum() == RegisterSet::Reg_al); |
| static const GPREmitterOneOp Emitter = {&Assembler::imul, &Assembler::imul}; |
| emitIASOpTyGPR(Func, Ty, this->getSrc(1), Emitter); |
| } else { |
| // The two-address version is used when multiplying by a non-constant |
| // or doing an 8-bit multiply. |
| assert(Var == this->getSrc(0)); |
| static const GPREmitterRegOp Emitter = {&Assembler::imul, &Assembler::imul, |
| &Assembler::imul}; |
| emitIASRegOpTyGPR(Func, Ty, Var, Src, Emitter); |
| } |
| } |
| |
| void InstX86ImulImm::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Variable *Dest = this->getDest(); |
| assert(Dest->getType() == IceType_i16 || Dest->getType() == IceType_i32); |
| assert(llvm::isa<Constant>(this->getSrc(1))); |
| Str << "\t" |
| "imul" |
| << this->getWidthString(Dest->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } |
| |
| void InstX86ImulImm::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| const Variable *Dest = this->getDest(); |
| Type Ty = Dest->getType(); |
| assert(llvm::isa<Constant>(this->getSrc(1))); |
| static const ThreeOpImmEmitter<GPRRegister, GPRRegister> Emitter = { |
| &Assembler::imul, &Assembler::imul}; |
| emitIASThreeOpImmOps<GPRRegister, GPRRegister, Traits::getEncodedGPR, |
| Traits::getEncodedGPR>(Func, Ty, Dest, this->getSrc(0), |
| this->getSrc(1), Emitter); |
| } |
| |
| void InstX86Insertps::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| assert(getInstructionSet(Func) >= SSE4_1); |
| const Variable *Dest = this->getDest(); |
| assert(Dest == this->getSrc(0)); |
| Type Ty = Dest->getType(); |
| static const ThreeOpImmEmitter<XmmRegister, XmmRegister> Emitter = { |
| &Assembler::insertps, &Assembler::insertps}; |
| emitIASThreeOpImmOps<XmmRegister, XmmRegister, Traits::getEncodedXmm, |
| Traits::getEncodedXmm>(Func, Ty, Dest, this->getSrc(1), |
| this->getSrc(2), Emitter); |
| } |
| |
| void InstX86Cbwdq::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Operand *Src0 = this->getSrc(0); |
| const auto DestReg = this->getDest()->getRegNum(); |
| const auto SrcReg = llvm::cast<Variable>(Src0)->getRegNum(); |
| (void)DestReg; |
| (void)SrcReg; |
| switch (Src0->getType()) { |
| default: |
| llvm_unreachable("unexpected source type!"); |
| break; |
| case IceType_i8: |
| assert(SrcReg == RegisterSet::Reg_al); |
| assert(DestReg == RegisterSet::Reg_ax || DestReg == RegisterSet::Reg_ah); |
| Str << "\t" |
| "cbtw"; |
| break; |
| case IceType_i16: |
| assert(SrcReg == RegisterSet::Reg_ax); |
| assert(DestReg == RegisterSet::Reg_dx); |
| Str << "\t" |
| "cwtd"; |
| break; |
| case IceType_i32: |
| assert(SrcReg == RegisterSet::Reg_eax); |
| assert(DestReg == RegisterSet::Reg_edx); |
| Str << "\t" |
| "cltd"; |
| break; |
| case IceType_i64: |
| assert(SrcReg == Traits::getRaxOrDie()); |
| assert(DestReg == Traits::getRdxOrDie()); |
| Str << "\t" |
| "cqo"; |
| break; |
| } |
| } |
| |
| void InstX86Cbwdq::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 1); |
| Operand *Src0 = this->getSrc(0); |
| const auto DestReg = this->getDest()->getRegNum(); |
| const auto SrcReg = llvm::cast<Variable>(Src0)->getRegNum(); |
| (void)DestReg; |
| (void)SrcReg; |
| switch (Src0->getType()) { |
| default: |
| llvm_unreachable("unexpected source type!"); |
| break; |
| case IceType_i8: |
| assert(SrcReg == RegisterSet::Reg_al); |
| assert(DestReg == RegisterSet::Reg_ax || DestReg == RegisterSet::Reg_ah); |
| Asm->cbw(); |
| break; |
| case IceType_i16: |
| assert(SrcReg == RegisterSet::Reg_ax); |
| assert(DestReg == RegisterSet::Reg_dx); |
| Asm->cwd(); |
| break; |
| case IceType_i32: |
| assert(SrcReg == RegisterSet::Reg_eax); |
| assert(DestReg == RegisterSet::Reg_edx); |
| Asm->cdq(); |
| break; |
| case IceType_i64: |
| assert(SrcReg == Traits::getRaxOrDie()); |
| assert(DestReg == Traits::getRdxOrDie()); |
| Asm->cqo(); |
| break; |
| } |
| } |
| |
| void InstX86Mul::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| assert(llvm::isa<Variable>(this->getSrc(0))); |
| assert(llvm::cast<Variable>(this->getSrc(0))->getRegNum() == |
| RegisterSet::Reg_eax); |
| assert(this->getDest()->getRegNum() == RegisterSet::Reg_eax); // TODO: |
| // allow |
| // edx? |
| Str << "\t" |
| "mul" |
| << this->getWidthString(this->getDest()->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| } |
| |
| void InstX86Mul::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| assert(llvm::isa<Variable>(this->getSrc(0))); |
| assert(llvm::cast<Variable>(this->getSrc(0))->getRegNum() == |
| RegisterSet::Reg_eax); |
| assert(this->getDest()->getRegNum() == RegisterSet::Reg_eax); // TODO: |
| // allow |
| // edx? |
| const Operand *Src = this->getSrc(1); |
| Type Ty = Src->getType(); |
| static const GPREmitterOneOp Emitter = {&Assembler::mul, &Assembler::mul}; |
| emitIASOpTyGPR(Func, Ty, Src, Emitter); |
| } |
| |
| void InstX86Mul::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| this->dumpDest(Func); |
| Str << " = mul." << this->getDest()->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Shld::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Variable *Dest = this->getDest(); |
| assert(this->getSrcSize() == 3); |
| assert(Dest == this->getSrc(0)); |
| Str << "\t" |
| "shld" |
| << this->getWidthString(Dest->getType()) << "\t"; |
| this->getSrc(2)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } |
| |
| void InstX86Shld::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| assert(this->getDest() == this->getSrc(0)); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src1 = this->getSrc(1); |
| const Operand *Src2 = this->getSrc(2); |
| static const GPREmitterShiftD Emitter = {&Assembler::shld, &Assembler::shld}; |
| emitIASGPRShiftDouble(Func, Dest, Src1, Src2, Emitter); |
| } |
| |
| void InstX86Shld::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| this->dumpDest(Func); |
| Str << " = shld." << this->getDest()->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Shrd::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Variable *Dest = this->getDest(); |
| assert(this->getSrcSize() == 3); |
| assert(Dest == this->getSrc(0)); |
| Str << "\t" |
| "shrd" |
| << this->getWidthString(Dest->getType()) << "\t"; |
| this->getSrc(2)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } |
| |
| void InstX86Shrd::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| assert(this->getDest() == this->getSrc(0)); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src1 = this->getSrc(1); |
| const Operand *Src2 = this->getSrc(2); |
| static const GPREmitterShiftD Emitter = {&Assembler::shrd, &Assembler::shrd}; |
| emitIASGPRShiftDouble(Func, Dest, Src1, Src2, Emitter); |
| } |
| |
| void InstX86Shrd::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| this->dumpDest(Func); |
| Str << " = shrd." << this->getDest()->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Cmov::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Variable *Dest = this->getDest(); |
| Str << "\t"; |
| assert(Condition != Cond::Br_None); |
| assert(this->getDest()->hasReg()); |
| Str << "cmov" << Traits::InstBrAttributes[Condition].DisplayString |
| << this->getWidthString(Dest->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| } |
| |
| void InstX86Cmov::emitIAS(const Cfg *Func) const { |
| assert(Condition != Cond::Br_None); |
| assert(this->getDest()->hasReg()); |
| assert(this->getSrcSize() == 2); |
| Operand *Src = this->getSrc(1); |
| Type SrcTy = Src->getType(); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| auto *Target = InstX86Base::getTarget(Func); |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| if (SrcVar->hasReg()) { |
| Asm->cmov(SrcTy, Condition, |
| Traits::getEncodedGPR(this->getDest()->getRegNum()), |
| Traits::getEncodedGPR(SrcVar->getRegNum())); |
| } else { |
| Asm->cmov(SrcTy, Condition, |
| Traits::getEncodedGPR(this->getDest()->getRegNum()), |
| AsmAddress(SrcVar, Target)); |
| } |
| } else if (const auto *Mem = llvm::dyn_cast<X86OperandMem>(Src)) { |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| Asm->cmov(SrcTy, Condition, |
| Traits::getEncodedGPR(this->getDest()->getRegNum()), |
| AsmAddress(Mem, Asm, Target)); |
| } else { |
| llvm_unreachable("Unexpected operand type"); |
| } |
| } |
| |
| void InstX86Cmov::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "cmov" << Traits::InstBrAttributes[Condition].DisplayString << "."; |
| Str << this->getDest()->getType() << " "; |
| this->dumpDest(Func); |
| Str << ", "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Cmpps::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| assert(Condition < Cond::Cmpps_Invalid); |
| Type DestTy = this->Dest->getType(); |
| Str << "\t" |
| "cmp" |
| << Traits::InstCmppsAttributes[Condition].EmitString |
| << Traits::TypeAttributes[DestTy].PdPsString << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Cmpps::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 2); |
| assert(Condition < Cond::Cmpps_Invalid); |
| // Assuming there isn't any load folding for cmpps, and vector constants are |
| // not allowed in PNaCl. |
| assert(llvm::isa<Variable>(this->getSrc(1))); |
| auto *Target = InstX86Base::getTarget(Func); |
| const auto *SrcVar = llvm::cast<Variable>(this->getSrc(1)); |
| if (SrcVar->hasReg()) { |
| Asm->cmpps(this->getDest()->getType(), |
| Traits::getEncodedXmm(this->getDest()->getRegNum()), |
| Traits::getEncodedXmm(SrcVar->getRegNum()), Condition); |
| } else { |
| AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target); |
| Asm->cmpps(this->getDest()->getType(), |
| Traits::getEncodedXmm(this->getDest()->getRegNum()), |
| SrcStackAddr, Condition); |
| } |
| } |
| |
| void InstX86Cmpps::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| assert(Condition < Cond::Cmpps_Invalid); |
| this->dumpDest(Func); |
| Str << " = cmp" << Traits::InstCmppsAttributes[Condition].EmitString |
| << "ps" |
| "\t"; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Cmpxchg::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 3); |
| if (this->Locked) { |
| Str << "\t" |
| "lock"; |
| } |
| Str << "\t" |
| "cmpxchg" |
| << this->getWidthString(this->getSrc(0)->getType()) << "\t"; |
| this->getSrc(2)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| } |
| |
| void InstX86Cmpxchg::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 3); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Type Ty = this->getSrc(0)->getType(); |
| auto *Target = InstX86Base::getTarget(Func); |
| const auto Mem = llvm::cast<X86OperandMem>(this->getSrc(0)); |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| const AsmAddress Addr = AsmAddress(Mem, Asm, Target); |
| const auto *VarReg = llvm::cast<Variable>(this->getSrc(2)); |
| assert(VarReg->hasReg()); |
| const GPRRegister Reg = Traits::getEncodedGPR(VarReg->getRegNum()); |
| Asm->cmpxchg(Ty, Addr, Reg, this->Locked); |
| } |
| |
| void InstX86Cmpxchg::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| if (this->Locked) { |
| Str << "lock "; |
| } |
| Str << "cmpxchg." << this->getSrc(0)->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Cmpxchg8b::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 5); |
| if (this->Locked) { |
| Str << "\t" |
| "lock"; |
| } |
| Str << "\t" |
| "cmpxchg8b\t"; |
| this->getSrc(0)->emit(Func); |
| } |
| |
| void InstX86Cmpxchg8b::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 5); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| const auto Mem = llvm::cast<X86OperandMem>(this->getSrc(0)); |
| assert(Mem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| auto *Target = InstX86Base::getTarget(Func); |
| const AsmAddress Addr = AsmAddress(Mem, Asm, Target); |
| Asm->cmpxchg8b(Addr, this->Locked); |
| } |
| |
| void InstX86Cmpxchg8b::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| if (this->Locked) { |
| Str << "lock "; |
| } |
| Str << "cmpxchg8b "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Cvt::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Str << "\t" |
| "cvt"; |
| if (isTruncating()) |
| Str << "t"; |
| Str << Traits::TypeAttributes[this->getSrc(0)->getType()].CvtString << "2" |
| << Traits::TypeAttributes[this->getDest()->getType()].CvtString << "\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Cvt::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| Type DestTy = Dest->getType(); |
| Type SrcTy = Src->getType(); |
| switch (Variant) { |
| case Si2ss: { |
| assert(isScalarIntegerType(SrcTy)); |
| assert(SrcTy == IceType_i32 || SrcTy == IceType_i64); |
| assert(isScalarFloatingType(DestTy)); |
| static const CastEmitterRegOp<XmmRegister, GPRRegister> Emitter = { |
| &Assembler::cvtsi2ss, &Assembler::cvtsi2ss}; |
| emitIASCastRegOp<XmmRegister, GPRRegister, Traits::getEncodedXmm, |
| Traits::getEncodedGPR>(Func, DestTy, Dest, SrcTy, Src, |
| Emitter); |
| return; |
| } |
| case Tss2si: { |
| assert(isScalarFloatingType(SrcTy)); |
| assert(isScalarIntegerType(DestTy)); |
| assert(DestTy == IceType_i32 || DestTy == IceType_i64); |
| static const CastEmitterRegOp<GPRRegister, XmmRegister> Emitter = { |
| &Assembler::cvttss2si, &Assembler::cvttss2si}; |
| emitIASCastRegOp<GPRRegister, XmmRegister, Traits::getEncodedGPR, |
| Traits::getEncodedXmm>(Func, DestTy, Dest, SrcTy, Src, |
| Emitter); |
| return; |
| } |
| case Ss2si: { |
| assert(isScalarFloatingType(SrcTy)); |
| assert(isScalarIntegerType(DestTy)); |
| assert(DestTy == IceType_i32 || DestTy == IceType_i64); |
| static const CastEmitterRegOp<GPRRegister, XmmRegister> Emitter = { |
| &Assembler::cvtss2si, &Assembler::cvtss2si}; |
| emitIASCastRegOp<GPRRegister, XmmRegister, Traits::getEncodedGPR, |
| Traits::getEncodedXmm>(Func, DestTy, Dest, SrcTy, Src, |
| Emitter); |
| return; |
| } |
| case Float2float: { |
| assert(isScalarFloatingType(SrcTy)); |
| assert(isScalarFloatingType(DestTy)); |
| assert(DestTy != SrcTy); |
| static const XmmEmitterRegOp Emitter = {&Assembler::cvtfloat2float, |
| &Assembler::cvtfloat2float}; |
| emitIASRegOpTyXMM(Func, SrcTy, Dest, Src, Emitter); |
| return; |
| } |
| case Dq2ps: { |
| assert(isVectorIntegerType(SrcTy)); |
| assert(isVectorFloatingType(DestTy)); |
| static const XmmEmitterRegOp Emitter = {&Assembler::cvtdq2ps, |
| &Assembler::cvtdq2ps}; |
| emitIASRegOpTyXMM(Func, DestTy, Dest, Src, Emitter); |
| return; |
| } |
| case Tps2dq: { |
| assert(isVectorFloatingType(SrcTy)); |
| assert(isVectorIntegerType(DestTy)); |
| static const XmmEmitterRegOp Emitter = {&Assembler::cvttps2dq, |
| &Assembler::cvttps2dq}; |
| emitIASRegOpTyXMM(Func, DestTy, Dest, Src, Emitter); |
| return; |
| } |
| case Ps2dq: { |
| assert(isVectorFloatingType(SrcTy)); |
| assert(isVectorIntegerType(DestTy)); |
| static const XmmEmitterRegOp Emitter = {&Assembler::cvtps2dq, |
| &Assembler::cvtps2dq}; |
| emitIASRegOpTyXMM(Func, DestTy, Dest, Src, Emitter); |
| return; |
| } |
| } |
| } |
| |
| void InstX86Cvt::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| this->dumpDest(Func); |
| Str << " = cvt"; |
| if (isTruncating()) |
| Str << "t"; |
| Str << Traits::TypeAttributes[this->getSrc(0)->getType()].CvtString << "2" |
| << Traits::TypeAttributes[this->getDest()->getType()].CvtString << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Round::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 3); |
| Str << "\t" << this->Opcode |
| << Traits::TypeAttributes[this->getDest()->getType()].SpSdString << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Round::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| assert(getInstructionSet(Func) >= SSE4_1); |
| const Variable *Dest = this->getDest(); |
| Type Ty = Dest->getType(); |
| static const ThreeOpImmEmitter<XmmRegister, XmmRegister> Emitter = { |
| &Assembler::round, &Assembler::round}; |
| emitIASThreeOpImmOps<XmmRegister, XmmRegister, Traits::getEncodedXmm, |
| Traits::getEncodedXmm>(Func, Ty, Dest, this->getSrc(0), |
| this->getSrc(1), Emitter); |
| } |
| |
| void InstX86Icmp::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Str << "\t" |
| "cmp" |
| << this->getWidthString(this->getSrc(0)->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| } |
| |
| void InstX86Icmp::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| const Operand *Src0 = this->getSrc(0); |
| const Operand *Src1 = this->getSrc(1); |
| Type Ty = Src0->getType(); |
| static const GPREmitterRegOp RegEmitter = {&Assembler::cmp, &Assembler::cmp, |
| &Assembler::cmp}; |
| static const GPREmitterAddrOp AddrEmitter = {&Assembler::cmp, |
| &Assembler::cmp}; |
| if (const auto *SrcVar0 = llvm::dyn_cast<Variable>(Src0)) { |
| if (SrcVar0->hasReg()) { |
| emitIASRegOpTyGPR(Func, Ty, SrcVar0, Src1, RegEmitter); |
| return; |
| } |
| } |
| emitIASAsAddrOpTyGPR(Func, Ty, Src0, Src1, AddrEmitter); |
| } |
| |
| void InstX86Icmp::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "cmp." << this->getSrc(0)->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Ucomiss::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Str << "\t" |
| "ucomi" |
| << Traits::TypeAttributes[this->getSrc(0)->getType()].SdSsString << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| } |
| |
| void InstX86Ucomiss::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| // Currently src0 is always a variable by convention, to avoid having two |
| // memory operands. |
| assert(llvm::isa<Variable>(this->getSrc(0))); |
| const auto *Src0Var = llvm::cast<Variable>(this->getSrc(0)); |
| Type Ty = Src0Var->getType(); |
| static const XmmEmitterRegOp Emitter = {&Assembler::ucomiss, |
| &Assembler::ucomiss}; |
| emitIASRegOpTyXMM(Func, Ty, Src0Var, this->getSrc(1), Emitter); |
| } |
| |
| void InstX86Ucomiss::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "ucomiss." << this->getSrc(0)->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86UD2::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 0); |
| Str << "\t" |
| "ud2"; |
| } |
| |
| void InstX86UD2::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->ud2(); |
| } |
| |
| void InstX86UD2::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "ud2"; |
| } |
| |
| void InstX86Int3::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 0); |
| Str << "\t" |
| "int 3"; |
| } |
| |
| void InstX86Int3::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->int3(); |
| } |
| |
| void InstX86Int3::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "int 3"; |
| } |
| |
| void InstX86Test::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Str << "\t" |
| "test" |
| << this->getWidthString(this->getSrc(0)->getType()) << "\t"; |
| this->getSrc(1)->emit(Func); |
| Str << ", "; |
| this->getSrc(0)->emit(Func); |
| } |
| |
| void InstX86Test::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| const Operand *Src0 = this->getSrc(0); |
| const Operand *Src1 = this->getSrc(1); |
| Type Ty = Src0->getType(); |
| // The Reg/Addr form of test is not encodeable. |
| static const GPREmitterRegOp RegEmitter = {&Assembler::test, nullptr, |
| &Assembler::test}; |
| static const GPREmitterAddrOp AddrEmitter = {&Assembler::test, |
| &Assembler::test}; |
| if (const auto *SrcVar0 = llvm::dyn_cast<Variable>(Src0)) { |
| if (SrcVar0->hasReg()) { |
| emitIASRegOpTyGPR(Func, Ty, SrcVar0, Src1, RegEmitter); |
| return; |
| } |
| } |
| emitIASAsAddrOpTyGPR(Func, Ty, Src0, Src1, AddrEmitter); |
| } |
| |
| void InstX86Test::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "test." << this->getSrc(0)->getType() << " "; |
| this->dumpSources(Func); |
| } |
| |
| void InstX86Mfence::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 0); |
| Str << "\t" |
| "mfence"; |
| } |
| |
| void InstX86Mfence::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->mfence(); |
| } |
| |
| void InstX86Mfence::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "mfence"; |
| } |
| |
| void InstX86Store::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| Type Ty = this->getSrc(0)->getType(); |
| Str << "\t" |
| "mov" |
| << this->getWidthString(Ty) << Traits::TypeAttributes[Ty].SdSsString |
| << "\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| } |
| |
| void InstX86Store::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 2); |
| const Operand *Dest = this->getSrc(1); |
| const Operand *Src = this->getSrc(0); |
| Type DestTy = Dest->getType(); |
| if (isScalarFloatingType(DestTy)) { |
| // Src must be a register, since Dest is a Mem operand of some kind. |
| const auto *SrcVar = llvm::cast<Variable>(Src); |
| assert(SrcVar->hasReg()); |
| XmmRegister SrcReg = Traits::getEncodedXmm(SrcVar->getRegNum()); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| auto *Target = InstX86Base::getTarget(Func); |
| if (const auto *DestVar = llvm::dyn_cast<Variable>(Dest)) { |
| assert(!DestVar->hasReg()); |
| AsmAddress StackAddr(AsmAddress(DestVar, Target)); |
| Asm->movss(DestTy, StackAddr, SrcReg); |
| } else { |
| const auto DestMem = llvm::cast<X86OperandMem>(Dest); |
| assert(DestMem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| Asm->movss(DestTy, AsmAddress(DestMem, Asm, Target), SrcReg); |
| } |
| return; |
| } else { |
| assert(isScalarIntegerType(DestTy)); |
| static const GPREmitterAddrOp GPRAddrEmitter = {&Assembler::mov, |
| &Assembler::mov}; |
| emitIASAsAddrOpTyGPR(Func, DestTy, Dest, Src, GPRAddrEmitter); |
| } |
| } |
| |
| void InstX86Store::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "mov." << this->getSrc(0)->getType() << " "; |
| this->getSrc(1)->dump(Func); |
| Str << ", "; |
| this->getSrc(0)->dump(Func); |
| } |
| |
| void InstX86StoreP::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| assert(isVectorType(this->getSrc(1)->getType())); |
| Str << "\t" |
| "movups\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| } |
| |
| void InstX86StoreP::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 2); |
| const auto *SrcVar = llvm::cast<Variable>(this->getSrc(0)); |
| const auto DestMem = llvm::cast<X86OperandMem>(this->getSrc(1)); |
| assert(DestMem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| assert(SrcVar->hasReg()); |
| auto *Target = InstX86Base::getTarget(Func); |
| Asm->movups(AsmAddress(DestMem, Asm, Target), |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } |
| |
| void InstX86StoreP::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "storep." << this->getSrc(0)->getType() << " "; |
| this->getSrc(1)->dump(Func); |
| Str << ", "; |
| this->getSrc(0)->dump(Func); |
| } |
| |
| void InstX86StoreQ::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| assert(this->getSrc(1)->getType() == IceType_i64 || |
| this->getSrc(1)->getType() == IceType_f64 || |
| isVectorType(this->getSrc(1)->getType())); |
| Str << "\t" |
| "movq\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| } |
| |
| void InstX86StoreQ::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 2); |
| const auto *SrcVar = llvm::cast<Variable>(this->getSrc(0)); |
| const auto DestMem = llvm::cast<X86OperandMem>(this->getSrc(1)); |
| assert(DestMem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| assert(SrcVar->hasReg()); |
| auto *Target = InstX86Base::getTarget(Func); |
| Asm->movq(AsmAddress(DestMem, Asm, Target), |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } |
| |
| void InstX86StoreQ::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "storeq." << this->getSrc(0)->getType() << " "; |
| this->getSrc(1)->dump(Func); |
| Str << ", "; |
| this->getSrc(0)->dump(Func); |
| } |
| |
| void InstX86StoreD::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 2); |
| assert(this->getSrc(1)->getType() == IceType_i64 || |
| this->getSrc(1)->getType() == IceType_f64 || |
| isVectorType(this->getSrc(1)->getType())); |
| Str << "\t" |
| "movd\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getSrc(1)->emit(Func); |
| } |
| |
| void InstX86StoreD::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 2); |
| const auto *SrcVar = llvm::cast<Variable>(this->getSrc(0)); |
| const auto DestMem = llvm::cast<X86OperandMem>(this->getSrc(1)); |
| assert(DestMem->getSegmentRegister() == X86OperandMem::DefaultSegment); |
| assert(SrcVar->hasReg()); |
| auto *Target = InstX86Base::getTarget(Func); |
| Asm->movd(SrcVar->getType(), AsmAddress(DestMem, Asm, Target), |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } |
| |
| void InstX86StoreD::dump(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrDump(); |
| Str << "stored." << this->getSrc(0)->getType() << " "; |
| this->getSrc(1)->dump(Func); |
| Str << ", "; |
| this->getSrc(0)->dump(Func); |
| } |
| |
| void InstX86Lea::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| if (auto *Add = this->deoptToAddOrNull(Func)) { |
| Add->emit(Func); |
| return; |
| } |
| |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| assert(this->getDest()->hasReg()); |
| Str << "\t" |
| "lea" |
| << this->getWidthString(this->getDest()->getType()) << "\t"; |
| Operand *Src0 = this->getSrc(0); |
| if (const auto *Src0Var = llvm::dyn_cast<Variable>(Src0)) { |
| Type Ty = Src0Var->getType(); |
| // lea on x86-32 doesn't accept mem128 operands, so cast VSrc0 to an |
| // acceptable type. |
| Src0Var->asType(Func, isVectorType(Ty) ? IceType_i32 : Ty, RegNumT()) |
| ->emit(Func); |
| } else { |
| Src0->emit(Func); |
| } |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Lea::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| const Variable *Var = this->getDest(); |
| Type Ty = Var->getType(); |
| const Operand *Src = this->getSrc(0); |
| |
| if (auto *Add = this->deoptToAddOrNull(Func)) { |
| Add->emitIAS(Func); |
| return; |
| } |
| |
| emitIASRegOpTyGPR(Func, Ty, Var, Src, Emitter); |
| } |
| |
| Inst *InstX86Lea::deoptToAddOrNull(const Cfg *Func) const { |
| // Revert back to Add when the Lea is a 2-address instruction. |
| // Caller has to emit, this just produces the add instruction. |
| if (auto *MemOp = llvm::dyn_cast<X86OperandMem>(this->getSrc(0))) { |
| if (getFlags().getAggressiveLea() && |
| MemOp->getBase()->getRegNum() == this->getDest()->getRegNum() && |
| MemOp->getIndex() == nullptr && MemOp->getShift() == 0) { |
| auto *Add = InstX86Add::create(const_cast<Cfg *>(Func), this->getDest(), |
| MemOp->getOffset()); |
| // TODO(manasijm): Remove const_cast by emitting code for add |
| // directly. |
| return Add; |
| } |
| } |
| return nullptr; |
| } |
| |
| void InstX86Mov::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Operand *Src = this->getSrc(0); |
| Type SrcTy = Src->getType(); |
| Type DestTy = this->getDest()->getType(); |
| if (DestTy == IceType_i64 && llvm::isa<ConstantInteger64>(Src) && |
| !Utils::IsInt(32, llvm::cast<ConstantInteger64>(Src)->getValue())) { |
| Str << "\t" |
| "movabs" |
| "\t"; |
| } else { |
| Str << "\t" |
| "mov" |
| << (!isScalarFloatingType(DestTy) |
| ? this->getWidthString(DestTy) |
| : Traits::TypeAttributes[DestTy].SdSsString) |
| << "\t"; |
| } |
| // For an integer truncation operation, src is wider than dest. In this case, |
| // we use a mov instruction whose data width matches the narrower dest. |
| // TODO: This assert disallows usages such as copying a floating |
| // point value between a vector and a scalar (which movss is used for). Clean |
| // this up. |
| assert(InstX86Base::getTarget(Func)->typeWidthInBytesOnStack(DestTy) == |
| InstX86Base::getTarget(Func)->typeWidthInBytesOnStack(SrcTy)); |
| const Operand *NewSrc = Src; |
| if (auto *SrcVar = llvm::dyn_cast<Variable>(Src)) { |
| RegNumT NewRegNum; |
| if (SrcVar->hasReg()) |
| NewRegNum = Traits::getGprForType(DestTy, SrcVar->getRegNum()); |
| if (SrcTy != DestTy) |
| NewSrc = SrcVar->asType(Func, DestTy, NewRegNum); |
| } |
| NewSrc->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Mov::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| Type DestTy = Dest->getType(); |
| Type SrcTy = Src->getType(); |
| // Mov can be used for GPRs or XMM registers. Also, the type does not |
| // necessarily match (Mov can be used for bitcasts). However, when the type |
| // does not match, one of the operands must be a register. Thus, the strategy |
| // is to find out if Src or Dest are a register, then use that register's |
| // type to decide on which emitter set to use. The emitter set will include |
| // reg-reg movs, but that case should be unused when the types don't match. |
| static const XmmEmitterRegOp XmmRegEmitter = {&Assembler::movss, |
| &Assembler::movss}; |
| static const GPREmitterRegOp GPRRegEmitter = { |
| &Assembler::mov, &Assembler::mov, &Assembler::mov}; |
| static const GPREmitterAddrOp GPRAddrEmitter = {&Assembler::mov, |
| &Assembler::mov}; |
| // For an integer truncation operation, src is wider than dest. In this case, |
| // we use a mov instruction whose data width matches the narrower dest. |
| // TODO: This assert disallows usages such as copying a floating |
| // point value between a vector and a scalar (which movss is used for). Clean |
| // this up. |
| auto *Target = InstX86Base::getTarget(Func); |
| assert(Target->typeWidthInBytesOnStack(this->getDest()->getType()) == |
| Target->typeWidthInBytesOnStack(Src->getType())); |
| if (Dest->hasReg()) { |
| if (isScalarFloatingType(DestTy)) { |
| emitIASRegOpTyXMM(Func, DestTy, Dest, Src, XmmRegEmitter); |
| return; |
| } else { |
| assert(isScalarIntegerType(DestTy)); |
| // Widen DestTy for truncation (see above note). We should only do this |
| // when both Src and Dest are integer types. |
| if (DestTy == IceType_i64) { |
| if (const auto *C64 = llvm::dyn_cast<ConstantInteger64>(Src)) { |
| Func->getAssembler<Assembler>()->movabs( |
| Traits::getEncodedGPR(Dest->getRegNum()), C64->getValue()); |
| return; |
| } |
| } |
| if (isScalarIntegerType(SrcTy)) { |
| SrcTy = DestTy; |
| } |
| emitIASRegOpTyGPR(Func, DestTy, Dest, Src, GPRRegEmitter); |
| return; |
| } |
| } else { |
| // Dest must be Stack and Src *could* be a register. Use Src's type to |
| // decide on the emitters. |
| AsmAddress StackAddr(AsmAddress(Dest, Target)); |
| if (isScalarFloatingType(SrcTy)) { |
| // Src must be a register. |
| const auto *SrcVar = llvm::cast<Variable>(Src); |
| assert(SrcVar->hasReg()); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->movss(SrcTy, StackAddr, Traits::getEncodedXmm(SrcVar->getRegNum())); |
| return; |
| } else if (isVectorType(SrcTy)) { |
| // Src must be a register |
| const auto *SrcVar = llvm::cast<Variable>(Src); |
| assert(SrcVar->hasReg()); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->movups(StackAddr, Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } else { |
| // Src can be a register or immediate. |
| assert(isScalarIntegerType(SrcTy)); |
| emitIASAddrOpTyGPR(Func, SrcTy, StackAddr, Src, GPRAddrEmitter); |
| return; |
| } |
| return; |
| } |
| } |
| |
| void InstX86Movd::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| assert(this->getSrcSize() == 1); |
| Variable *Dest = this->getDest(); |
| Operand *Src = this->getSrc(0); |
| |
| if (Dest->getType() == IceType_i64 || Src->getType() == IceType_i64) { |
| assert(Dest->getType() == IceType_f64 || Src->getType() == IceType_f64); |
| assert(Dest->getType() != Src->getType()); |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| Str << "\t" |
| "movq" |
| "\t"; |
| Src->emit(Func); |
| Str << ", "; |
| Dest->emit(Func); |
| return; |
| } |
| |
| InstX86BaseUnaryopXmm<InstX86Base::Movd>::emit(Func); |
| } |
| |
| void InstX86Movd::emitIAS(const Cfg *Func) const { |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| assert(this->getSrcSize() == 1); |
| const Variable *Dest = this->getDest(); |
| auto *Target = InstX86Base::getTarget(Func); |
| // For insert/extract element (one of Src/Dest is an Xmm vector and the other |
| // is an int type). |
| if (const auto *SrcVar = llvm::dyn_cast<Variable>(this->getSrc(0))) { |
| if (SrcVar->getType() == IceType_i32 || SrcVar->getType() == IceType_i64) { |
| assert(isVectorType(Dest->getType()) || |
| (isScalarFloatingType(Dest->getType()) && |
| typeWidthInBytes(SrcVar->getType()) == |
| typeWidthInBytes(Dest->getType()))); |
| assert(Dest->hasReg()); |
| XmmRegister DestReg = Traits::getEncodedXmm(Dest->getRegNum()); |
| if (SrcVar->hasReg()) { |
| Asm->movd(SrcVar->getType(), DestReg, |
| Traits::getEncodedGPR(SrcVar->getRegNum())); |
| } else { |
| AsmAddress StackAddr(AsmAddress(SrcVar, Target)); |
| Asm->movd(SrcVar->getType(), DestReg, StackAddr); |
| } |
| } else { |
| assert(isVectorType(SrcVar->getType()) || |
| (isScalarFloatingType(SrcVar->getType()) && |
| typeWidthInBytes(SrcVar->getType()) == |
| typeWidthInBytes(Dest->getType()))); |
| assert(SrcVar->hasReg()); |
| assert(Dest->getType() == IceType_i32 || Dest->getType() == IceType_i64); |
| XmmRegister SrcReg = Traits::getEncodedXmm(SrcVar->getRegNum()); |
| if (Dest->hasReg()) { |
| Asm->movd(Dest->getType(), Traits::getEncodedGPR(Dest->getRegNum()), |
| SrcReg); |
| } else { |
| AsmAddress StackAddr(AsmAddress(Dest, Target)); |
| Asm->movd(Dest->getType(), StackAddr, SrcReg); |
| } |
| } |
| } else { |
| assert(Dest->hasReg()); |
| XmmRegister DestReg = Traits::getEncodedXmm(Dest->getRegNum()); |
| auto *Mem = llvm::cast<X86OperandMem>(this->getSrc(0)); |
| Asm->movd(Mem->getType(), DestReg, AsmAddress(Mem, Asm, Target)); |
| } |
| } |
| |
| void InstX86Movp::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| // TODO(wala,stichnot): movups works with all vector operands, but there |
| // exist other instructions (movaps, movdqa, movdqu) that may perform better, |
| // depending on the data type and alignment of the operands. |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| Str << "\t" |
| "movups\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Movp::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| assert(isVectorType(this->getDest()->getType())); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| static const XmmEmitterMovOps Emitter = { |
| &Assembler::movups, &Assembler::movups, &Assembler::movups}; |
| emitIASMovlikeXMM(Func, Dest, Src, Emitter); |
| } |
| |
| void InstX86Movq::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| assert(this->getSrcSize() == 1); |
| assert(this->getDest()->getType() == IceType_i64 || |
| this->getDest()->getType() == IceType_f64); |
| Str << "\t" |
| "movq" |
| "\t"; |
| this->getSrc(0)->emit(Func); |
| Str << ", "; |
| this->getDest()->emit(Func); |
| } |
| |
| void InstX86Movq::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| assert(this->getDest()->getType() == IceType_i64 || |
| this->getDest()->getType() == IceType_f64 || |
| isVectorType(this->getDest()->getType())); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| static const XmmEmitterMovOps Emitter = {&Assembler::movq, &Assembler::movq, |
| &Assembler::movq}; |
| emitIASMovlikeXMM(Func, Dest, Src, Emitter); |
| } |
| |
| void InstX86MovssRegs::emitIAS(const Cfg *Func) const { |
| // This is Binop variant is only intended to be used for reg-reg moves where |
| // part of the Dest register is untouched. |
| assert(this->getSrcSize() == 2); |
| const Variable *Dest = this->getDest(); |
| assert(Dest == this->getSrc(0)); |
| const auto *SrcVar = llvm::cast<Variable>(this->getSrc(1)); |
| assert(Dest->hasReg() && SrcVar->hasReg()); |
| Assembler *Asm = Func->getAssembler<Assembler>(); |
| Asm->movss(IceType_f32, Traits::getEncodedXmm(Dest->getRegNum()), |
| Traits::getEncodedXmm(SrcVar->getRegNum())); |
| } |
| |
| void InstX86Movsx::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| // Dest must be a > 8-bit register, but Src can be 8-bit. In practice we just |
| // use the full register for Dest to avoid having an OperandSizeOverride |
| // prefix. It also allows us to only dispatch on SrcTy. |
| Type SrcTy = Src->getType(); |
| assert(typeWidthInBytes(Dest->getType()) > 1); |
| assert(typeWidthInBytes(Dest->getType()) > typeWidthInBytes(SrcTy)); |
| emitIASRegOpTyGPR<false, true>(Func, SrcTy, Dest, Src, this->Emitter); |
| } |
| |
| bool InstX86Movzx::mayBeElided(const Variable *Dest, |
| const Operand *SrcOpnd) const { |
| const auto *Src = llvm::dyn_cast<Variable>(SrcOpnd); |
| |
| // Src is not a Variable, so it does not have a register. Movzx can't be |
| // elided. |
| if (Src == nullptr) |
| return false; |
| |
| // Movzx to/from memory can't be elided. |
| if (!Src->hasReg() || !Dest->hasReg()) |
| return false; |
| |
| // Reg/reg move with different source and dest can't be elided. |
| if (Traits::getEncodedGPR(Src->getRegNum()) != |
| Traits::getEncodedGPR(Dest->getRegNum())) |
| return false; |
| |
| // A must-keep movzx 32- to 64-bit is sometimes needed in x86-64 sandboxing. |
| return !MustKeep; |
| } |
| |
| void InstX86Movzx::emit(const Cfg *Func) const { |
| if (!BuildDefs::dump()) |
| return; |
| // There's no movzx %eXX, %rXX. To zero extend 32- to 64-bits, we emit a |
| // mov %eXX, %eXX. The processor will still do a movzx[bw]q. |
| assert(this->getSrcSize() == 1); |
| const Operand *Src = this->getSrc(0); |
| const Variable *Dest = this->Dest; |
| if (Src->getType() == IceType_i32 && Dest->getType() == IceType_i64) { |
| Ostream &Str = Func->getContext()->getStrEmit(); |
| if (mayBeElided(Dest, Src)) { |
| Str << "\t/* elided movzx */"; |
| } else { |
| Str << "\t" |
| "mov" |
| "\t"; |
| Src->emit(Func); |
| Str << ", "; |
| Dest->asType(Func, IceType_i32, |
| Traits::getGprForType(IceType_i32, Dest->getRegNum())) |
| ->emit(Func); |
| Str << " /* movzx */"; |
| } |
| return; |
| } |
| InstX86BaseUnaryopGPR<InstX86Base::Movzx>::emit(Func); |
| } |
| |
| void InstX86Movzx::emitIAS(const Cfg *Func) const { |
| assert(this->getSrcSize() == 1); |
| const Variable *Dest = this->getDest(); |
| const Operand *Src = this->getSrc(0); |
| Type SrcTy = Src->getType(); |
| assert(typeWidthInBytes(Dest->getType()) > 1); |
| assert |