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swiftshader / SwiftShader / f7de9e0637c2cb3681d3f6e60cd8dea3d7ff9db4 / . / third_party / subzero / src / IceInstX8664.cpp
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//===- 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.
///
//===----------------------------------------------------------------------===//
#include "IceInstX8664.h"
#include "IceAssemblerX8664.h"
#include "IceCfg.h"
#include "IceCfgNode.h"
#include "IceConditionCodesX86.h"
#include "IceDefs.h"
#include "IceInst.h"
#include "IceInstX8664.def"
#include "IceOperand.h"
#include "IceRegistersX8664.h"
#include "IceTargetLowering.h"
#include "IceTargetLoweringX8664.h"
namespace Ice {
namespace X8664 {
struct InstBrAttributesType {
CondX86::BrCond Opposite;
const char *const DisplayString;
const char *const EmitString;
};
struct InstCmppsAttributesType {
const char *const EmitString;
};
struct TypeAttributesType {
const Type InVectorElementType;
const char *const CvtString; // i (integer), s (single FP), d (double FP)
const char *const SdSsString; // ss, sd, or <blank>
const char *const PdPsString; // ps, pd, or <blank>
const char *const SpSdString; // ss, sd, ps, pd, or <blank>
const char *const IntegralString; // b, w, d, or <blank>
const char *const UnpackString; // bw, wd, dq, or <blank>
const char *const PackString; // wb, dw, or <blank>
const char *const WidthString; // b, w, l, q, or <blank>
const char *const FldString; // s, l, or <blank>
};
constexpr InstBrAttributesType InstBrAttributes[] = {
#define X(val, encode, opp, dump, emit) {CondX86::opp, dump, emit},
ICEINSTX86BR_TABLE
#undef X
};
constexpr InstCmppsAttributesType InstCmppsAttributes[] = {
#define X(val, emit) {emit},
ICEINSTX86CMPPS_TABLE
#undef X
};
constexpr TypeAttributesType TypeAttributes[] = {
#define X(tag, elty, cvt, sdss, pdps, spsd, int_, unpack, pack, width, fld) \
{IceType_##elty, cvt, sdss, pdps, spsd, int_, unpack, pack, width, fld},
ICETYPEX86_TABLE
#undef X
};
const char *InstX86Base::getWidthString(Type Ty) {
return TypeAttributes[Ty].WidthString;
}
const char *InstX86Base::getFldString(Type Ty) {
return TypeAttributes[Ty].FldString;
}
const char *InstX86Base::getSseSuffixString(Type DestTy, SseSuffix Suffix) {
switch (Suffix) {
default:
case InstX86Base::SseSuffix::None:
return "";
case InstX86Base::SseSuffix::Packed:
return TypeAttributes[DestTy].PdPsString;
case InstX86Base::SseSuffix::Unpack:
return TypeAttributes[DestTy].UnpackString;
case InstX86Base::SseSuffix::Scalar:
return TypeAttributes[DestTy].SdSsString;
case InstX86Base::SseSuffix::Integral:
return TypeAttributes[DestTy].IntegralString;
case InstX86Base::SseSuffix::Pack:
return TypeAttributes[DestTy].PackString;
}
}
/// Return the type which the elements of the vector have in the X86
/// representation of the vector.
Type InstX86Base::getInVectorElementType(Type Ty) {
assert(isVectorType(Ty));
assert(Ty < std::size(TypeAttributes));
return TypeAttributes[Ty].InVectorElementType;
}
Cond::BrCond InstX86Base::getOppositeCondition(BrCond Cond) {
return 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(RegX8664::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 << "[X8664] ";
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 << 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 << 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(RegX8664::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(RegX8664::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 = RegX8664::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 ? RegX8664::getEncodedGPR(Var->getRegNum())
: RegX8664::getEncodedGPR(Var->getRegNum());
if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) {
if (SrcVar->hasReg()) {
GPRRegister SrcReg = SrcCanBeByte
? RegX8664::getEncodedGPR(SrcVar->getRegNum())
: RegX8664::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");
}
}
template void emitIASRegOpTyGPR<true, true>(const Cfg *Func, Type Ty,
const Variable *Var,
const Operand *Src,
const GPREmitterRegOp &Emitter);
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 = RegX8664::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 = RegX8664::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 = RegX8664::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 = RegX8664::getEncodedGPR(Dest->getRegNum());
// SrcVar1 must be reg.
const auto *SrcVar1 = llvm::cast<Variable>(Src1Op);
assert(SrcVar1->hasReg());
GPRRegister SrcReg = RegX8664::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 = RegX8664::getEncodedXmm(Var->getRegNum());
if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) {
if (SrcVar->hasReg()) {
XmmRegister SrcReg = RegX8664::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 = RegX8664::getEncodedXmm(Var->getRegNum());
if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) {
if (SrcVar->hasReg()) {
XmmRegister SrcReg = RegX8664::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 = RegX8664::getEncodedXmm(Dest->getRegNum());
if (const auto *SrcVar = llvm::dyn_cast<Variable>(Src)) {
if (SrcVar->hasReg()) {
(Asm->*(Emitter.XmmXmm))(DestReg,
RegX8664::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,
RegX8664::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 = RegX8664::getEncodedXmm(Src->getRegNum());
GPRRegister DestReg = RegX8664::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"
<< 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, RegX8664::getEncodedGPR,
RegX8664::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, RegX8664::getEncodedXmm,
RegX8664::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 == RegisterSet::Reg_rax);
assert(DestReg == RegisterSet::Reg_rdx);
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 == RegisterSet::Reg_rax);
assert(DestReg == RegisterSet::Reg_rdx);
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" << 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,
RegX8664::getEncodedGPR(this->getDest()->getRegNum()),
RegX8664::getEncodedGPR(SrcVar->getRegNum()));
} else {
Asm->cmov(SrcTy, Condition,
RegX8664::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,
RegX8664::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" << 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"
<< InstCmppsAttributes[Condition].EmitString
<< 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(),
RegX8664::getEncodedXmm(this->getDest()->getRegNum()),
RegX8664::getEncodedXmm(SrcVar->getRegNum()), Condition);
} else {
AsmAddress SrcStackAddr = AsmAddress(SrcVar, Target);
Asm->cmpps(this->getDest()->getType(),
RegX8664::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" << 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 = RegX8664::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 << TypeAttributes[this->getSrc(0)->getType()].CvtString << "2"
<< 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, RegX8664::getEncodedXmm,
RegX8664::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, RegX8664::getEncodedGPR,
RegX8664::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, RegX8664::getEncodedGPR,
RegX8664::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 << TypeAttributes[this->getSrc(0)->getType()].CvtString << "2"
<< 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
<< 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, RegX8664::getEncodedXmm,
RegX8664::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"
<< 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) << 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 = RegX8664::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),
RegX8664::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),
RegX8664::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),
RegX8664::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)
: 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 = RegX8664::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(
RegX8664::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,
RegX8664::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, RegX8664::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 = RegX8664::getEncodedXmm(Dest->getRegNum());
if (SrcVar->hasReg()) {
Asm->movd(SrcVar->getType(), DestReg,
RegX8664::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 = RegX8664::getEncodedXmm(SrcVar->getRegNum());
if (Dest->hasReg()) {
Asm->movd(Dest->getType(), RegX8664::getEncodedGPR(Dest->getRegNum()),
SrcReg);
} else {
AsmAddress StackAddr(AsmAddress(Dest, Target));
Asm->movd(Dest->getType(), StackAddr, SrcReg);
}
}
} else {
assert(Dest->hasReg());
XmmRegister DestReg = RegX8664::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, RegX8664::getEncodedXmm(Dest->getRegNum()),
RegX8664::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 (RegX8664::getEncodedGPR(Src->getRegNum()) !=
RegX8664::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,
RegX8664::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(typeWidthInBytes(Dest->getType()) > typeWidthInBytes(SrcTy));
if (Src->getType() == IceType_i32 && Dest->getType() == IceType_i64 &&
mayBeElided(Dest, Src)) {
return;
}
emitIASRegOpTyGPR<false, true>(Func, SrcTy, Dest, Src, this->Emitter);
}
void InstX86Nop::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
// TODO: Emit the right code for each variant.
Str << "\t"
"nop\t/* variant = "
<< Variant << " */";
}
void InstX86Nop::emitIAS(const Cfg *Func) const {
Assembler *Asm = Func->getAssembler<Assembler>();
// TODO: Emit the right code for the variant.
Asm->nop();
}
void InstX86Nop::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Str << "nop (variant = " << Variant << ")";
}
void InstX86Pextr::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
assert(this->getSrcSize() == 2);
// pextrb and pextrd are SSE4.1 instructions.
Str << "\t" << this->Opcode
<< TypeAttributes[this->getSrc(0)->getType()].IntegralString << "\t";
this->getSrc(1)->emit(Func);
Str << ", ";
this->getSrc(0)->emit(Func);
Str << ", ";
Variable *Dest = this->getDest();
// pextrw must take a register dest. There is an SSE4.1 version that takes a
// memory dest, but we aren't using it. For uniformity, just restrict them
// all to have a register dest for now.
assert(Dest->hasReg());
Dest->asType(Func, IceType_i32, Dest->getRegNum())->emit(Func);
}
void InstX86Pextr::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 2);
// pextrb and pextrd are SSE4.1 instructions.
const Variable *Dest = this->getDest();
Type DispatchTy = getInVectorElementType(this->getSrc(0)->getType());
// pextrw must take a register dest. There is an SSE4.1 version that takes a
// memory dest, but we aren't using it. For uniformity, just restrict them
// all to have a register dest for now.
assert(Dest->hasReg());
// pextrw's Src(0) must be a register (both SSE4.1 and SSE2).
assert(llvm::cast<Variable>(this->getSrc(0))->hasReg());
static const ThreeOpImmEmitter<GPRRegister, XmmRegister> Emitter = {
&Assembler::pextr, nullptr};
emitIASThreeOpImmOps<GPRRegister, XmmRegister, RegX8664::getEncodedGPR,
RegX8664::getEncodedXmm>(
Func, DispatchTy, Dest, this->getSrc(0), this->getSrc(1), Emitter);
}
void InstX86Pinsr::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
assert(this->getSrcSize() == 3);
Str << "\t" << this->Opcode
<< TypeAttributes[this->getDest()->getType()].IntegralString << "\t";
this->getSrc(2)->emit(Func);
Str << ", ";
Operand *Src1 = this->getSrc(1);
if (const auto *Src1Var = llvm::dyn_cast<Variable>(Src1)) {
// If src1 is a register, it should always be r32.
if (Src1Var->hasReg()) {
const auto NewRegNum = RegX8664::getBaseReg(Src1Var->getRegNum());
const Variable *NewSrc = Src1Var->asType(Func, IceType_i32, NewRegNum);
NewSrc->emit(Func);
} else {
Src1Var->emit(Func);
}
} else {
Src1->emit(Func);
}
Str << ", ";
this->getDest()->emit(Func);
}
void InstX86Pinsr::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 3);
assert(this->getDest() == this->getSrc(0));
// pinsrb and pinsrd are SSE4.1 instructions.
const Operand *Src0 = this->getSrc(1);
Type DispatchTy = Src0->getType();
// If src1 is a register, it should always be r32 (this should fall out from
// the encodings for ByteRegs overlapping the encodings for r32), but we have
// to make sure the register allocator didn't choose an 8-bit high register
// like "ah".
if (BuildDefs::asserts()) {
if (auto *Src0Var = llvm::dyn_cast<Variable>(Src0)) {
if (Src0Var->hasReg()) {
const auto RegNum = Src0Var->getRegNum();
const auto BaseRegNum = RegX8664::getBaseReg(RegNum);
(void)BaseRegNum;
assert(RegX8664::getEncodedGPR(RegNum) ==
RegX8664::getEncodedGPR(BaseRegNum));
}
}
}
static const ThreeOpImmEmitter<XmmRegister, GPRRegister> Emitter = {
&Assembler::pinsr, &Assembler::pinsr};
emitIASThreeOpImmOps<XmmRegister, GPRRegister, RegX8664::getEncodedXmm,
RegX8664::getEncodedGPR>(
Func, DispatchTy, this->getDest(), Src0, this->getSrc(2), Emitter);
}
void InstX86Pshufd::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 2);
const Variable *Dest = this->getDest();
Type Ty = Dest->getType();
static const ThreeOpImmEmitter<XmmRegister, XmmRegister> Emitter = {
&Assembler::pshufd, &Assembler::pshufd};
emitIASThreeOpImmOps<XmmRegister, XmmRegister, RegX8664::getEncodedXmm,
RegX8664::getEncodedXmm>(Func, Ty, Dest, this->getSrc(0),
this->getSrc(1), Emitter);
}
void InstX86Shufps::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 3);
const Variable *Dest = this->getDest();
assert(Dest == this->getSrc(0));
Type Ty = Dest->getType();
static const ThreeOpImmEmitter<XmmRegister, XmmRegister> Emitter = {
&Assembler::shufps, &Assembler::shufps};
emitIASThreeOpImmOps<XmmRegister, XmmRegister, RegX8664::getEncodedXmm,
RegX8664::getEncodedXmm>(Func, Ty, Dest, this->getSrc(1),
this->getSrc(2), Emitter);
}
void InstX86Pop::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
assert(this->getSrcSize() == 0);
Str << "\t"
"pop\t";
this->getDest()->emit(Func);
}
void InstX86Pop::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 0);
Assembler *Asm = Func->getAssembler<Assembler>();
if (this->getDest()->hasReg()) {
Asm->popl(RegX8664::getEncodedGPR(this->getDest()->getRegNum()));
} else {
auto *Target = InstX86Base::getTarget(Func);
Asm->popl(AsmAddress(this->getDest(), Target));
}
}
void InstX86Pop::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
this->dumpDest(Func);
Str << " = pop." << this->getDest()->getType() << " ";
}
void InstX86Push::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t"
"push"
"\t";
assert(this->getSrcSize() == 1);
const Operand *Src = this->getSrc(0);
Src->emit(Func);
}
void InstX86Push::emitIAS(const Cfg *Func) const {
Assembler *Asm = Func->getAssembler<Assembler>();
assert(this->getSrcSize() == 1);
const Operand *Src = this->getSrc(0);
if (const auto *Var = llvm::dyn_cast<Variable>(Src)) {
Asm->pushl(RegX8664::getEncodedGPR(Var->getRegNum()));
} else if (const auto *Const32 = llvm::dyn_cast<ConstantInteger32>(Src)) {
Asm->pushl(AssemblerImmediate(Const32->getValue()));
} else if (auto *CR = llvm::dyn_cast<ConstantRelocatable>(Src)) {
Asm->pushl(CR);
} else {
llvm_unreachable("Unexpected operand type");
}
}
void InstX86Push::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Str << "push." << this->getSrc(0)->getType() << " ";
this->dumpSources(Func);
}
void InstX86Ret::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t"
"ret";
}
void InstX86Ret::emitIAS(const Cfg *Func) const {
Assembler *Asm = Func->getAssembler<Assembler>();
Asm->ret();
}
void InstX86Ret::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Type Ty =
(this->getSrcSize() == 0 ? IceType_void : this->getSrc(0)->getType());
Str << "ret." << Ty << " ";
this->dumpSources(Func);
}
void InstX86Setcc::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t"
"set"
<< InstBrAttributes[Condition].DisplayString << "\t";
this->Dest->emit(Func);
}
void InstX86Setcc::emitIAS(const Cfg *Func) const {
assert(Condition != Cond::Br_None);
assert(this->getDest()->getType() == IceType_i1);
assert(this->getSrcSize() == 0);
Assembler *Asm = Func->getAssembler<Assembler>();
auto *Target = InstX86Base::getTarget(Func);
if (this->getDest()->hasReg())
Asm->setcc(Condition,
RegX8664::getEncodedByteReg(this->getDest()->getRegNum()));
else
Asm->setcc(Condition, AsmAddress(this->getDest(), Target));
return;
}
void InstX86Setcc::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Str << "setcc." << InstBrAttributes[Condition].DisplayString << " ";
this->dumpDest(Func);
}
void InstX86Xadd::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
if (this->Locked) {
Str << "\t"
"lock";
}
Str << "\t"
"xadd"
<< this->getWidthString(this->getSrc(0)->getType()) << "\t";
this->getSrc(1)->emit(Func);
Str << ", ";
this->getSrc(0)->emit(Func);
}
void InstX86Xadd::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 2);
Assembler *Asm = Func->getAssembler<Assembler>();
Type Ty = this->getSrc(0)->getType();
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);
const auto *VarReg = llvm::cast<Variable>(this->getSrc(1));
assert(VarReg->hasReg());
const GPRRegister Reg = RegX8664::getEncodedGPR(VarReg->getRegNum());
Asm->xadd(Ty, Addr, Reg, this->Locked);
}
void InstX86Xadd::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
if (this->Locked) {
Str << "lock ";
}
Type Ty = this->getSrc(0)->getType();
Str << "xadd." << Ty << " ";
this->dumpSources(Func);
}
void InstX86Xchg::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t"
"xchg"
<< this->getWidthString(this->getSrc(0)->getType()) << "\t";
this->getSrc(1)->emit(Func);
Str << ", ";
this->getSrc(0)->emit(Func);
}
void InstX86Xchg::emitIAS(const Cfg *Func) const {
assert(this->getSrcSize() == 2);
Assembler *Asm = Func->getAssembler<Assembler>();
Type Ty = this->getSrc(0)->getType();
const auto *VarReg1 = llvm::cast<Variable>(this->getSrc(1));
assert(VarReg1->hasReg());
const GPRRegister Reg1 = RegX8664::getEncodedGPR(VarReg1->getRegNum());
if (const auto *VarReg0 = llvm::dyn_cast<Variable>(this->getSrc(0))) {
assert(VarReg0->hasReg());
const GPRRegister Reg0 = RegX8664::getEncodedGPR(VarReg0->getRegNum());
Asm->xchg(Ty, Reg0, Reg1);
return;
}
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->xchg(Ty, Addr, Reg1);
}
void InstX86Xchg::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Type Ty = this->getSrc(0)->getType();
Str << "xchg." << Ty << " ";
this->dumpSources(Func);
}
void InstX86IacaStart::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t# IACA_START\n"
"\t.byte 0x0F, 0x0B\n"
"\t"
"movl\t$111, %ebx\n"
"\t.byte 0x64, 0x67, 0x90";
}
void InstX86IacaStart::emitIAS(const Cfg *Func) const {
Assembler *Asm = Func->getAssembler<Assembler>();
Asm->iaca_start();
}
void InstX86IacaStart::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Str << "IACA_START";
}
void InstX86IacaEnd::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrEmit();
Str << "\t# IACA_END\n"
"\t"
"movl\t$222, %ebx\n"
"\t.byte 0x64, 0x67, 0x90\n"
"\t.byte 0x0F, 0x0B";
}
void InstX86IacaEnd::emitIAS(const Cfg *Func) const {
Assembler *Asm = Func->getAssembler<Assembler>();
Asm->iaca_end();
}
void InstX86IacaEnd::dump(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
Ostream &Str = Func->getContext()->getStrDump();
Str << "IACA_END";
}
void X86Operand::dump(const Cfg *, Ostream &Str) const {
if (BuildDefs::dump())
Str << "<OperandX8664>";
}
X86OperandMem::X86OperandMem(Cfg *Func, Type Ty, Variable *Base,
Constant *Offset, Variable *Index, uint16_t Shift,
bool IsRebased)
: X86Operand(kMem, Ty), Base(Base), Offset(Offset), Index(Index),
Shift(Shift), IsRebased(IsRebased) {
assert(Shift <= 3);
Vars = nullptr;
NumVars = 0;
if (Base)
++NumVars;
if (Index)
++NumVars;
if (NumVars) {
Vars = Func->allocateArrayOf<Variable *>(NumVars);
SizeT I = 0;
if (Base)
Vars[I++] = Base;
if (Index)
Vars[I++] = Index;
assert(I == NumVars);
}
}
void X86OperandMem::emit(const Cfg *Func) const {
if (!BuildDefs::dump())
return;
const auto *Target = Func->getTarget();
// If the base is rematerializable, we need to replace it with the correct
// physical register (stack or base pointer), and update the Offset.
int32_t Disp = 0;
if (getBase() && getBase()->isRematerializable()) {
Disp += getBase()->getRematerializableOffset(Target);
}
// The index should never be rematerializable. But if we ever allow it, then
// we should make sure the rematerialization offset is shifted by the Shift
// value.
if (getIndex())
assert(!getIndex()->isRematerializable());
Ostream &Str = Func->getContext()->getStrEmit();
// Emit as Offset(Base,Index,1<<Shift). Offset is emitted without the leading
// '$'. Omit the (Base,Index,1<<Shift) part if Base==nullptr.
if (getOffset() == nullptr && Disp == 0) {
// No offset, emit nothing.
} else if (getOffset() == nullptr && Disp != 0) {
Str << Disp;
} else if (const auto *CI = llvm::dyn_cast<ConstantInteger32>(Offset)) {
if (Base == nullptr || CI->getValue() || Disp != 0)
// Emit a non-zero offset without a leading '$'.
Str << CI->getValue() + Disp;
} else if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(Offset)) {
// TODO(sehr): ConstantRelocatable still needs updating for
// rematerializable base/index and Disp.
assert(Disp == 0);
CR->emitWithoutPrefix(Target);
if (Base == nullptr && Index == nullptr) {
// rip-relative addressing.
Str << "(%rip)";
}
} else {
llvm_unreachable("Invalid offset type for x86 mem operand");
}
if (Base == nullptr && Index == nullptr) {
return;
}
Str << "(";
if (Base != nullptr) {
const Variable *B = Base;
// TODO(jpp): stop abusing the operand's type to identify LEAs.
const Type MemType = getType();
if (Base->getType() != IceType_i32 && MemType != IceType_void &&
!isVectorType(MemType)) {
// X86-64 is ILP32, but %rsp and %rbp are accessed as 64-bit registers.
// For filetype=asm, they need to be emitted as their 32-bit siblings.
assert(Base->getType() == IceType_i64);
assert(RegX8664::getEncodedGPR(Base->getRegNum()) ==
RegX8664::Encoded_Reg_rsp ||
RegX8664::getEncodedGPR(Base->getRegNum()) ==
RegX8664::Encoded_Reg_rbp ||
getType() == IceType_void);
B = B->asType(Func, IceType_i32,
RegX8664::getGprForType(IceType_i32, Base->getRegNum()));
}
B->emit(Func);
}
if (Index != nullptr) {
Variable *I = Index;
Str << ",";
I->emit(Func);
if (Shift)
Str << "," << (1u << Shift);
}
Str << ")";
}
void X86OperandMem::dump(const Cfg *Func, Ostream &Str) const {
if (!BuildDefs::dump())
return;
bool Dumped = false;
Str << "[";
int32_t Disp = 0;
if (getBase() && getBase()->isRematerializable()) {
Disp += getBase()->getRematerializableOffset(Func->getTarget());
}
if (Base) {
if (Func)
Base->dump(Func);
else
Base->dump(Str);
Dumped = true;
}
if (Index) {
if (Base)
Str << "+";
if (Shift > 0)
Str << (1u << Shift) << "*";
if (Func)
Index->dump(Func);
else
Index->dump(Str);
Dumped = true;
}
if (Disp) {
if (Disp > 0)
Str << "+";
Str << Disp;
Dumped = true;
}
// Pretty-print the Offset.
bool OffsetIsZero = false;
bool OffsetIsNegative = false;
if (!Offset) {
OffsetIsZero = true;
} else if (const auto *CI = llvm::dyn_cast<ConstantInteger32>(Offset)) {
OffsetIsZero = (CI->getValue() == 0);
OffsetIsNegative = (static_cast<int32_t>(CI->getValue()) < 0);
} else {
assert(llvm::isa<ConstantRelocatable>(Offset));
}
if (Dumped) {
if (!OffsetIsZero) { // Suppress if Offset is known to be 0
if (!OffsetIsNegative) // Suppress if Offset is known to be negative
Str << "+";
Offset->dump(Func, Str);
}
} else {
// There is only the offset.
Offset->dump(Func, Str);
}
Str << "]";
}
} // namespace X8664
} // end of namespace Ice