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chromium / native_client / pnacl-subzero / e3cabdafc42cb8120ebb268378e9facd9a8107bd / . / src / IceTargetLoweringX86Base.h
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//===- subzero/src/IceTargetLoweringX86Base.h - x86 lowering ----*- C++ -*-===//
//
// The Subzero Code Generator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Declares the TargetLoweringX86 template class, which implements the
/// TargetLowering base interface for the x86 architecture.
///
//===----------------------------------------------------------------------===//
#ifndef SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H
#define SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H
#include "IceDefs.h"
#include "IceInst.h"
#include "IceSwitchLowering.h"
#include "IceTargetLowering.h"
#include "IceTargetLoweringX86RegClass.h"
#include "IceUtils.h"
#include <array>
#include <type_traits>
#include <utility>
#ifndef X86NAMESPACE
#error "You must define the X86 Target namespace."
#endif
namespace Ice {
namespace X86NAMESPACE {
using namespace ::Ice::X86;
template <typename Traits> class BoolFolding;
/// TargetX86Base is a template for all X86 Targets, and it relies on the CRT
/// pattern for generating code, delegating to actual backends target-specific
/// lowerings (e.g., call, ret, and intrinsics.) Backends are expected to
/// implement the following methods (which should be accessible from
/// TargetX86Base):
///
/// Operand *createNaClReadTPSrcOperand()
///
/// Note: Ideally, we should be able to
///
/// static_assert(std::is_base_of<TargetX86Base<TraitsType>,
/// Machine>::value);
///
/// but that does not work: the compiler does not know that Machine inherits
/// from TargetX86Base at this point in translation.
template <typename TraitsType> class TargetX86Base : public TargetLowering {
TargetX86Base() = delete;
TargetX86Base(const TargetX86Base &) = delete;
TargetX86Base &operator=(const TargetX86Base &) = delete;
public:
using Traits = TraitsType;
using ConcreteTarget = typename Traits::ConcreteTarget;
using InstructionSetEnum = typename Traits::InstructionSet;
using BrCond = typename Traits::Cond::BrCond;
using CmppsCond = typename Traits::Cond::CmppsCond;
using X86Address = typename Traits::Address;
using X86Operand = typename Traits::X86Operand;
using X86OperandMem = typename Traits::X86OperandMem;
using SegmentRegisters = typename Traits::X86OperandMem::SegmentRegisters;
using InstX86Br = typename Traits::Insts::Br;
using InstX86FakeRMW = typename Traits::Insts::FakeRMW;
using InstX86Label = typename Traits::Insts::Label;
~TargetX86Base() override = default;
static void staticInit(GlobalContext *Ctx);
static bool shouldBePooled(const Constant *C);
static ::Ice::Type getPointerType();
static FixupKind getPcRelFixup() { return PcRelFixup; }
static FixupKind getAbsFixup() { return AbsFixup; }
bool needSandboxing() const { return NeedSandboxing; }
void translateOm1() override;
void translateO2() override;
void doLoadOpt();
bool doBranchOpt(Inst *I, const CfgNode *NextNode) override;
SizeT getNumRegisters() const override {
return Traits::RegisterSet::Reg_NUM;
}
Inst *createLoweredMove(Variable *Dest, Variable *SrcVar) override {
if (isVectorType(Dest->getType())) {
return Traits::Insts::Movp::create(Func, Dest, SrcVar);
}
return Traits::Insts::Mov::create(Func, Dest, SrcVar);
(void)Dest;
(void)SrcVar;
return nullptr;
}
Variable *getPhysicalRegister(RegNumT RegNum,
Type Ty = IceType_void) override;
const char *getRegName(RegNumT RegNum, Type Ty) const override;
static const char *getRegClassName(RegClass C) {
auto ClassNum = static_cast<RegClassX86>(C);
assert(ClassNum < RCX86_NUM);
switch (ClassNum) {
default:
assert(C < RC_Target);
return regClassString(C);
case RCX86_Is64To8:
return "i64to8"; // 64-bit GPR truncable to i8
case RCX86_Is32To8:
return "i32to8"; // 32-bit GPR truncable to i8
case RCX86_Is16To8:
return "i16to8"; // 16-bit GPR truncable to i8
case RCX86_IsTrunc8Rcvr:
return "i8from"; // 8-bit GPR truncable from wider GPRs
case RCX86_IsAhRcvr:
return "i8fromah"; // 8-bit GPR that ah can be assigned to
}
}
SmallBitVector getRegisterSet(RegSetMask Include,
RegSetMask Exclude) const override;
const SmallBitVector &
getRegistersForVariable(const Variable *Var) const override {
RegClass RC = Var->getRegClass();
assert(static_cast<RegClassX86>(RC) < RCX86_NUM);
return TypeToRegisterSet[RC];
}
const SmallBitVector &
getAllRegistersForVariable(const Variable *Var) const override {
RegClass RC = Var->getRegClass();
assert(static_cast<RegClassX86>(RC) < RCX86_NUM);
return TypeToRegisterSetUnfiltered[RC];
}
const SmallBitVector &getAliasesForRegister(RegNumT Reg) const override {
Reg.assertIsValid();
return RegisterAliases[Reg];
}
bool hasFramePointer() const override { return IsEbpBasedFrame; }
void setHasFramePointer() override { IsEbpBasedFrame = true; }
RegNumT getStackReg() const override { return Traits::StackPtr; }
RegNumT getFrameReg() const override { return Traits::FramePtr; }
RegNumT getFrameOrStackReg() const override {
return IsEbpBasedFrame ? getFrameReg() : getStackReg();
}
size_t typeWidthInBytesOnStack(Type Ty) const override {
// Round up to the next multiple of WordType bytes.
const uint32_t WordSizeInBytes = typeWidthInBytes(Traits::WordType);
return Utils::applyAlignment(typeWidthInBytes(Ty), WordSizeInBytes);
}
uint32_t getStackAlignment() const override {
return Traits::X86_STACK_ALIGNMENT_BYTES;
}
void reserveFixedAllocaArea(size_t Size, size_t Align) override {
FixedAllocaSizeBytes = Size;
assert(llvm::isPowerOf2_32(Align));
FixedAllocaAlignBytes = Align;
PrologEmitsFixedAllocas = true;
}
/// Returns the (negative) offset from ebp/rbp where the fixed Allocas start.
int32_t getFrameFixedAllocaOffset() const override {
return FixedAllocaSizeBytes - (SpillAreaSizeBytes - maxOutArgsSizeBytes());
}
virtual uint32_t maxOutArgsSizeBytes() const override {
return MaxOutArgsSizeBytes;
}
virtual void updateMaxOutArgsSizeBytes(uint32_t Size) {
MaxOutArgsSizeBytes = std::max(MaxOutArgsSizeBytes, Size);
}
bool shouldSplitToVariable64On32(Type Ty) const override {
return Traits::Is64Bit ? false : Ty == IceType_i64;
}
ConstantRelocatable *createGetIPForRegister(const Variable *Dest) {
assert(Dest->hasReg());
const std::string RegName = Traits::getRegName(Dest->getRegNum());
return llvm::cast<ConstantRelocatable>(Ctx->getConstantExternSym(
Ctx->getGlobalString(H_getIP_prefix + RegName)));
}
SizeT getMinJumpTableSize() const override { return 4; }
void emitVariable(const Variable *Var) const override;
void emit(const ConstantInteger32 *C) const final;
void emit(const ConstantInteger64 *C) const final;
void emit(const ConstantFloat *C) const final;
void emit(const ConstantDouble *C) const final;
void emit(const ConstantUndef *C) const final;
void emit(const ConstantRelocatable *C) const final;
void initNodeForLowering(CfgNode *Node) override;
template <typename T = Traits>
typename std::enable_if<!T::Is64Bit, Operand>::type *
loOperand(Operand *Operand);
template <typename T = Traits>
typename std::enable_if<T::Is64Bit, Operand>::type *loOperand(Operand *) {
llvm::report_fatal_error(
"Hey, yo! This is x86-64. Watcha doin'? (loOperand)");
}
template <typename T = Traits>
typename std::enable_if<!T::Is64Bit, Operand>::type *
hiOperand(Operand *Operand);
template <typename T = Traits>
typename std::enable_if<T::Is64Bit, Operand>::type *hiOperand(Operand *) {
llvm::report_fatal_error(
"Hey, yo! This is x86-64. Watcha doin'? (hiOperand)");
}
void addProlog(CfgNode *Node) override;
void finishArgumentLowering(Variable *Arg, Variable *FramePtr,
size_t BasicFrameOffset, size_t StackAdjBytes,
size_t &InArgsSizeBytes);
void addEpilog(CfgNode *Node) override;
X86Address stackVarToAsmOperand(const Variable *Var) const;
InstructionSetEnum getInstructionSet() const { return InstructionSet; }
Operand *legalizeUndef(Operand *From, RegNumT RegNum = RegNumT());
protected:
const bool NeedSandboxing;
explicit TargetX86Base(Cfg *Func);
void postLower() override;
/// Initializes the RebasePtr member variable -- if so required by
/// SandboxingType for the concrete Target.
void initRebasePtr() {
assert(SandboxingType != ST_None);
dispatchToConcrete(&Traits::ConcreteTarget::initRebasePtr);
}
/// Emit code that initializes the value of the RebasePtr near the start of
/// the function -- if so required by SandboxingType for the concrete type.
void initSandbox() {
assert(SandboxingType != ST_None);
dispatchToConcrete(&Traits::ConcreteTarget::initSandbox);
}
void lowerAlloca(const InstAlloca *Instr) override;
void lowerArguments() override;
void lowerArithmetic(const InstArithmetic *Instr) override;
void lowerAssign(const InstAssign *Instr) override;
void lowerBr(const InstBr *Instr) override;
void lowerBreakpoint(const InstBreakpoint *Instr) override;
void lowerCall(const InstCall *Instr) override;
void lowerCast(const InstCast *Instr) override;
void lowerExtractElement(const InstExtractElement *Instr) override;
void lowerFcmp(const InstFcmp *Instr) override;
void lowerIcmp(const InstIcmp *Instr) override;
void lowerIntrinsicCall(const InstIntrinsicCall *Instr) override;
void lowerInsertElement(const InstInsertElement *Instr) override;
void lowerLoad(const InstLoad *Instr) override;
void lowerPhi(const InstPhi *Instr) override;
void lowerRet(const InstRet *Instr) override;
void lowerSelect(const InstSelect *Instr) override;
void lowerShuffleVector(const InstShuffleVector *Instr) override;
void lowerStore(const InstStore *Instr) override;
void lowerSwitch(const InstSwitch *Instr) override;
void lowerUnreachable(const InstUnreachable *Instr) override;
void lowerOther(const Inst *Instr) override;
void lowerRMW(const InstX86FakeRMW *RMW);
void prelowerPhis() override;
uint32_t getCallStackArgumentsSizeBytes(const CfgVector<Type> &ArgTypes,
Type ReturnType);
uint32_t getCallStackArgumentsSizeBytes(const InstCall *Instr) override;
void genTargetHelperCallFor(Inst *Instr) override;
/// OptAddr wraps all the possible operands that an x86 address might have.
struct OptAddr {
Variable *Base = nullptr;
Variable *Index = nullptr;
uint16_t Shift = 0;
int32_t Offset = 0;
ConstantRelocatable *Relocatable = nullptr;
};
/// Legalizes Addr w.r.t. SandboxingType. The exact type of legalization
/// varies for different <Target, SandboxingType> tuples.
bool legalizeOptAddrForSandbox(OptAddr *Addr) {
return dispatchToConcrete(
&Traits::ConcreteTarget::legalizeOptAddrForSandbox, std::move(Addr));
}
// Builds information for a canonical address expresion:
// <Relocatable + Offset>(Base, Index, Shift)
X86OperandMem *computeAddressOpt(const Inst *Instr, Type MemType,
Operand *Addr);
void doAddressOptOther() override;
void doAddressOptLoad() override;
void doAddressOptStore() override;
void doMockBoundsCheck(Operand *Opnd) override;
void randomlyInsertNop(float Probability,
RandomNumberGenerator &RNG) override;
/// Naive lowering of cmpxchg.
void lowerAtomicCmpxchg(Variable *DestPrev, Operand *Ptr, Operand *Expected,
Operand *Desired);
/// Attempt a more optimized lowering of cmpxchg. Returns true if optimized.
bool tryOptimizedCmpxchgCmpBr(Variable *DestPrev, Operand *Ptr,
Operand *Expected, Operand *Desired);
void lowerAtomicRMW(Variable *Dest, uint32_t Operation, Operand *Ptr,
Operand *Val);
void lowerCountZeros(bool Cttz, Type Ty, Variable *Dest, Operand *FirstVal,
Operand *SecondVal);
/// Load from memory for a given type.
void typedLoad(Type Ty, Variable *Dest, Variable *Base, Constant *Offset);
/// Store to memory for a given type.
void typedStore(Type Ty, Variable *Value, Variable *Base, Constant *Offset);
/// Copy memory of given type from Src to Dest using OffsetAmt on both.
void copyMemory(Type Ty, Variable *Dest, Variable *Src, int32_t OffsetAmt);
/// Replace some calls to memcpy with inline instructions.
void lowerMemcpy(Operand *Dest, Operand *Src, Operand *Count);
/// Replace some calls to memmove with inline instructions.
void lowerMemmove(Operand *Dest, Operand *Src, Operand *Count);
/// Replace some calls to memset with inline instructions.
void lowerMemset(Operand *Dest, Operand *Val, Operand *Count);
/// Lower an indirect jump adding sandboxing when needed.
void lowerIndirectJump(Variable *JumpTarget) {
// Without std::move below, the compiler deduces that the argument to
// lowerIndirectJmp is a Variable *&, not a Variable *.
dispatchToConcrete(&Traits::ConcreteTarget::lowerIndirectJump,
std::move(JumpTarget));
}
/// Check the comparison is in [Min,Max]. The flags register will be modified
/// with:
/// - below equal, if in range
/// - above, set if not in range
/// The index into the range is returned.
Operand *lowerCmpRange(Operand *Comparison, uint64_t Min, uint64_t Max);
/// Lowering of a cluster of switch cases. If the case is not matched control
/// will pass to the default label provided. If the default label is nullptr
/// then control will fall through to the next instruction. DoneCmp should be
/// true if the flags contain the result of a comparison with the Comparison.
void lowerCaseCluster(const CaseCluster &Case, Operand *Src0, bool DoneCmp,
CfgNode *DefaultLabel = nullptr);
using LowerBinOp = void (TargetX86Base::*)(Variable *, Operand *);
void expandAtomicRMWAsCmpxchg(LowerBinOp op_lo, LowerBinOp op_hi,
Variable *Dest, Operand *Ptr, Operand *Val);
void eliminateNextVectorSextInstruction(Variable *SignExtendedResult);
void emitGetIP(CfgNode *Node) {
dispatchToConcrete(&Traits::ConcreteTarget::emitGetIP, std::move(Node));
}
/// Emit a sandboxed return sequence rather than a return.
void emitSandboxedReturn() {
dispatchToConcrete(&Traits::ConcreteTarget::emitSandboxedReturn);
}
/// Emit just the call instruction (without argument or return variable
/// processing), sandboxing if needed.
virtual Inst *emitCallToTarget(Operand *CallTarget, Variable *ReturnReg) = 0;
/// Materialize the moves needed to return a value of the specified type.
virtual Variable *moveReturnValueToRegister(Operand *Value,
Type ReturnType) = 0;
/// Emit a jump table to the constant pool.
void emitJumpTable(const Cfg *Func,
const InstJumpTable *JumpTable) const override;
/// Emit a fake use of esp to make sure esp stays alive for the entire
/// function. Otherwise some esp adjustments get dead-code eliminated.
void keepEspLiveAtExit() {
Variable *esp =
Func->getTarget()->getPhysicalRegister(getStackReg(), Traits::WordType);
Context.insert<InstFakeUse>(esp);
}
/// Operand legalization helpers. To deal with address mode constraints, the
/// helpers will create a new Operand and emit instructions that guarantee
/// that the Operand kind is one of those indicated by the LegalMask (a
/// bitmask of allowed kinds). If the input Operand is known to already meet
/// the constraints, it may be simply returned as the result, without creating
/// any new instructions or operands.
enum OperandLegalization {
Legal_None = 0,
Legal_Reg = 1 << 0, // physical register, not stack location
Legal_Imm = 1 << 1,
Legal_Mem = 1 << 2, // includes [eax+4*ecx] as well as [esp+12]
Legal_Rematerializable = 1 << 3,
Legal_AddrAbs = 1 << 4, // ConstantRelocatable doesn't have to add RebasePtr
Legal_Default = ~(Legal_Rematerializable | Legal_AddrAbs)
// TODO(stichnot): Figure out whether this default works for x86-64.
};
using LegalMask = uint32_t;
Operand *legalize(Operand *From, LegalMask Allowed = Legal_Default,
RegNumT RegNum = RegNumT());
Variable *legalizeToReg(Operand *From, RegNumT RegNum = RegNumT());
/// Legalize the first source operand for use in the cmp instruction.
Operand *legalizeSrc0ForCmp(Operand *Src0, Operand *Src1);
/// Turn a pointer operand into a memory operand that can be used by a real
/// load/store operation. Legalizes the operand as well. This is a nop if the
/// operand is already a legal memory operand.
X86OperandMem *formMemoryOperand(Operand *Ptr, Type Ty,
bool DoLegalize = true);
Variable *makeReg(Type Ty, RegNumT RegNum = RegNumT());
static Type stackSlotType();
static constexpr uint32_t NoSizeLimit = 0;
/// Returns the largest type which is equal to or larger than Size bytes. The
/// type is suitable for copying memory i.e. a load and store will be a single
/// instruction (for example x86 will get f64 not i64).
static Type largestTypeInSize(uint32_t Size, uint32_t MaxSize = NoSizeLimit);
/// Returns the smallest type which is equal to or larger than Size bytes. If
/// one doesn't exist then the largest type smaller than Size bytes is
/// returned. The type is suitable for memory copies as described at
/// largestTypeInSize.
static Type firstTypeThatFitsSize(uint32_t Size,
uint32_t MaxSize = NoSizeLimit);
Variable *copyToReg8(Operand *Src, RegNumT RegNum = RegNumT());
Variable *copyToReg(Operand *Src, RegNumT RegNum = RegNumT());
/// Returns a register containing all zeros, without affecting the FLAGS
/// register, using the best instruction for the type.
Variable *makeZeroedRegister(Type Ty, RegNumT RegNum = RegNumT());
/// \name Returns a vector in a register with the given constant entries.
/// @{
Variable *makeVectorOfZeros(Type Ty, RegNumT RegNum = RegNumT());
Variable *makeVectorOfOnes(Type Ty, RegNumT RegNum = RegNumT());
Variable *makeVectorOfMinusOnes(Type Ty, RegNumT RegNum = RegNumT());
Variable *makeVectorOfHighOrderBits(Type Ty, RegNumT RegNum = RegNumT());
Variable *makeVectorOfFabsMask(Type Ty, RegNumT RegNum = RegNumT());
/// @}
/// Return a memory operand corresponding to a stack allocated Variable.
X86OperandMem *getMemoryOperandForStackSlot(Type Ty, Variable *Slot,
uint32_t Offset = 0);
void
makeRandomRegisterPermutation(llvm::SmallVectorImpl<RegNumT> &Permutation,
const SmallBitVector &ExcludeRegisters,
uint64_t Salt) const override;
/// AutoMemorySandboxer emits a bundle-lock/bundle-unlock pair if the
/// instruction's operand is a memory reference. This is only needed for
/// x86-64 NaCl sandbox.
template <InstBundleLock::Option BundleLockOpt = InstBundleLock::Opt_None>
class AutoMemorySandboxer {
AutoMemorySandboxer() = delete;
AutoMemorySandboxer(const AutoMemorySandboxer &) = delete;
AutoMemorySandboxer &operator=(const AutoMemorySandboxer &) = delete;
private:
typename Traits::TargetLowering *Target;
template <typename T, typename... Tail>
X86OperandMem **findMemoryReference(T **First, Tail... Others) {
if (llvm::isa<X86OperandMem>(*First)) {
return reinterpret_cast<X86OperandMem **>(First);
}
return findMemoryReference(Others...);
}
X86OperandMem **findMemoryReference() { return nullptr; }
public:
AutoBundle *Bundler = nullptr;
X86OperandMem **const MemOperand;
template <typename... T>
AutoMemorySandboxer(typename Traits::TargetLowering *Target, T... Args)
: Target(Target), MemOperand(Target->SandboxingType == ST_None
? nullptr
: findMemoryReference(Args...)) {
if (MemOperand != nullptr) {
if (Traits::Is64Bit) {
Bundler = new (Target->Func->template allocate<AutoBundle>())
AutoBundle(Target, BundleLockOpt);
}
*MemOperand = Target->_sandbox_mem_reference(*MemOperand);
}
}
~AutoMemorySandboxer() {
if (Bundler != nullptr) {
Bundler->~AutoBundle();
}
}
};
/// The following are helpers that insert lowered x86 instructions with
/// minimal syntactic overhead, so that the lowering code can look as close to
/// assembly as practical.
void _adc(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Adc>(Dest, Src0);
}
void _adc_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::AdcRMW>(DestSrc0, Src1);
}
void _add(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Add>(Dest, Src0);
}
void _add_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::AddRMW>(DestSrc0, Src1);
}
void _addps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Addps>(Dest, Src0);
}
void _addss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Addss>(Dest, Src0);
}
void _add_sp(Operand *Adjustment) {
dispatchToConcrete(&Traits::ConcreteTarget::_add_sp, std::move(Adjustment));
}
void _and(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::And>(Dest, Src0);
}
void _andnps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Andnps>(Dest, Src0);
}
void _andps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Andps>(Dest, Src0);
}
void _and_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::AndRMW>(DestSrc0, Src1);
}
void _blendvps(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Blendvps>(Dest, Src0, Src1);
}
void _br(BrCond Condition, CfgNode *TargetTrue, CfgNode *TargetFalse) {
Context.insert<InstX86Br>(TargetTrue, TargetFalse, Condition,
InstX86Br::Far);
}
void _br(CfgNode *Target) {
Context.insert<InstX86Br>(Target, InstX86Br::Far);
}
void _br(BrCond Condition, CfgNode *Target) {
Context.insert<InstX86Br>(Target, Condition, InstX86Br::Far);
}
void _br(BrCond Condition, InstX86Label *Label,
typename InstX86Br::Mode Kind = InstX86Br::Near) {
Context.insert<InstX86Br>(Label, Condition, Kind);
}
void _bsf(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Bsf>(Dest, Src0);
}
void _bsr(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Bsr>(Dest, Src0);
}
void _bswap(Variable *SrcDest) {
AutoMemorySandboxer<> _(this, &SrcDest);
Context.insert<typename Traits::Insts::Bswap>(SrcDest);
}
void _cbwdq(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Cbwdq>(Dest, Src0);
}
void _cmov(Variable *Dest, Operand *Src0, BrCond Condition) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Cmov>(Dest, Src0, Condition);
}
void _cmp(Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Src0, &Src1);
Context.insert<typename Traits::Insts::Icmp>(Src0, Src1);
}
void _cmpps(Variable *Dest, Operand *Src0, CmppsCond Condition) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Cmpps>(Dest, Src0, Condition);
}
void _cmpxchg(Operand *DestOrAddr, Variable *Eax, Variable *Desired,
bool Locked) {
AutoMemorySandboxer<> _(this, &DestOrAddr);
Context.insert<typename Traits::Insts::Cmpxchg>(DestOrAddr, Eax, Desired,
Locked);
// Mark eax as possibly modified by cmpxchg.
Context.insert<InstFakeDef>(Eax, llvm::dyn_cast<Variable>(DestOrAddr));
_set_dest_redefined();
Context.insert<InstFakeUse>(Eax);
}
void _cmpxchg8b(X86OperandMem *Addr, Variable *Edx, Variable *Eax,
Variable *Ecx, Variable *Ebx, bool Locked) {
AutoMemorySandboxer<> _(this, &Addr);
Context.insert<typename Traits::Insts::Cmpxchg8b>(Addr, Edx, Eax, Ecx, Ebx,
Locked);
// Mark edx, and eax as possibly modified by cmpxchg8b.
Context.insert<InstFakeDef>(Edx);
_set_dest_redefined();
Context.insert<InstFakeUse>(Edx);
Context.insert<InstFakeDef>(Eax);
_set_dest_redefined();
Context.insert<InstFakeUse>(Eax);
}
void _cvt(Variable *Dest, Operand *Src0,
typename Traits::Insts::Cvt::CvtVariant Variant) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Cvt>(Dest, Src0, Variant);
}
void _div(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Div>(Dest, Src0, Src1);
}
void _divps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Divps>(Dest, Src0);
}
void _divss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Divss>(Dest, Src0);
}
template <typename T = Traits>
typename std::enable_if<T::UsesX87, void>::type _fld(Operand *Src0) {
AutoMemorySandboxer<> _(this, &Src0);
Context.insert<typename Traits::Insts::template Fld<>>(Src0);
}
// TODO(jpp): when implementing the X8664 calling convention, make sure x8664
// does not invoke this method, and remove it.
template <typename T = Traits>
typename std::enable_if<!T::UsesX87, void>::type _fld(Operand *) {
llvm::report_fatal_error("fld is not available in x86-64");
}
template <typename T = Traits>
typename std::enable_if<T::UsesX87, void>::type _fstp(Variable *Dest) {
AutoMemorySandboxer<> _(this, &Dest);
Context.insert<typename Traits::Insts::template Fstp<>>(Dest);
}
// TODO(jpp): when implementing the X8664 calling convention, make sure x8664
// does not invoke this method, and remove it.
template <typename T = Traits>
typename std::enable_if<!T::UsesX87, void>::type _fstp(Variable *) {
llvm::report_fatal_error("fstp is not available in x86-64");
}
void _idiv(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Idiv>(Dest, Src0, Src1);
}
void _imul(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Imul>(Dest, Src0);
}
void _imul_imm(Variable *Dest, Operand *Src0, Constant *Imm) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::ImulImm>(Dest, Src0, Imm);
}
void _insertps(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Insertps>(Dest, Src0, Src1);
}
void _int3() { Context.insert<typename Traits::Insts::Int3>(); }
void _jmp(Operand *Target) {
AutoMemorySandboxer<> _(this, &Target);
Context.insert<typename Traits::Insts::Jmp>(Target);
}
void _lea(Variable *Dest, Operand *Src0) {
Context.insert<typename Traits::Insts::Lea>(Dest, Src0);
}
void _link_bp() { dispatchToConcrete(&Traits::ConcreteTarget::_link_bp); }
void _push_reg(Variable *Reg) {
dispatchToConcrete(&Traits::ConcreteTarget::_push_reg, std::move(Reg));
}
void _mfence() { Context.insert<typename Traits::Insts::Mfence>(); }
/// Moves can be used to redefine registers, creating "partial kills" for
/// liveness. Mark where moves are used in this way.
void _redefined(Inst *MovInst, bool IsRedefinition = true) {
if (IsRedefinition)
MovInst->setDestRedefined();
}
/// If Dest=nullptr is passed in, then a new variable is created, marked as
/// infinite register allocation weight, and returned through the in/out Dest
/// argument.
typename Traits::Insts::Mov *_mov(Variable *&Dest, Operand *Src0,
RegNumT RegNum = RegNumT()) {
if (Dest == nullptr)
Dest = makeReg(Src0->getType(), RegNum);
AutoMemorySandboxer<> _(this, &Dest, &Src0);
return Context.insert<typename Traits::Insts::Mov>(Dest, Src0);
}
void _mov_sp(Operand *NewValue) {
dispatchToConcrete(&Traits::ConcreteTarget::_mov_sp, std::move(NewValue));
}
typename Traits::Insts::Movp *_movp(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
return Context.insert<typename Traits::Insts::Movp>(Dest, Src0);
}
void _movd(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Movd>(Dest, Src0);
}
void _movq(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Movq>(Dest, Src0);
}
void _movss(Variable *Dest, Variable *Src0) {
Context.insert<typename Traits::Insts::MovssRegs>(Dest, Src0);
}
void _movsx(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Movsx>(Dest, Src0);
}
typename Traits::Insts::Movzx *_movzx(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
return Context.insert<typename Traits::Insts::Movzx>(Dest, Src0);
}
void _maxss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Maxss>(Dest, Src0);
}
void _minss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Minss>(Dest, Src0);
}
void _mul(Variable *Dest, Variable *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Mul>(Dest, Src0, Src1);
}
void _mulps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Mulps>(Dest, Src0);
}
void _mulss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Mulss>(Dest, Src0);
}
void _neg(Variable *SrcDest) {
AutoMemorySandboxer<> _(this, &SrcDest);
Context.insert<typename Traits::Insts::Neg>(SrcDest);
}
void _nop(SizeT Variant) {
Context.insert<typename Traits::Insts::Nop>(Variant);
}
void _or(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Or>(Dest, Src0);
}
void _orps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Orps>(Dest, Src0);
}
void _or_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::OrRMW>(DestSrc0, Src1);
}
void _padd(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Padd>(Dest, Src0);
}
void _pand(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pand>(Dest, Src0);
}
void _pandn(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pandn>(Dest, Src0);
}
void _pblendvb(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Pblendvb>(Dest, Src0, Src1);
}
void _pcmpeq(Variable *Dest, Operand *Src0,
Type ArithmeticTypeOverride = IceType_void) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pcmpeq>(Dest, Src0,
ArithmeticTypeOverride);
}
void _pcmpgt(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pcmpgt>(Dest, Src0);
}
void _pextr(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Pextr>(Dest, Src0, Src1);
}
void _pinsr(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Pinsr>(Dest, Src0, Src1);
}
void _pmull(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pmull>(Dest, Src0);
}
void _pmuludq(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pmuludq>(Dest, Src0);
}
void _pop(Variable *Dest) {
Context.insert<typename Traits::Insts::Pop>(Dest);
}
void _por(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Por>(Dest, Src0);
}
void _punpckl(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Punpckl>(Dest, Src0);
}
void _punpckh(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Punpckh>(Dest, Src0);
}
void _packss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Packss>(Dest, Src0);
}
void _packus(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Packus>(Dest, Src0);
}
void _pshufb(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pshufb>(Dest, Src0);
}
void _pshufd(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Pshufd>(Dest, Src0, Src1);
}
void _psll(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Psll>(Dest, Src0);
}
void _psra(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Psra>(Dest, Src0);
}
void _psrl(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Psrl>(Dest, Src0);
}
void _psub(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Psub>(Dest, Src0);
}
void _push(Operand *Src0) {
Context.insert<typename Traits::Insts::Push>(Src0);
}
void _pxor(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Pxor>(Dest, Src0);
}
void _ret(Variable *Src0 = nullptr) {
Context.insert<typename Traits::Insts::Ret>(Src0);
}
void _rol(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Rol>(Dest, Src0);
}
X86OperandMem *_sandbox_mem_reference(X86OperandMem *Mem) {
return dispatchToConcrete(&Traits::ConcreteTarget::_sandbox_mem_reference,
std::move(Mem));
}
void _sar(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Sar>(Dest, Src0);
}
void _sbb(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Sbb>(Dest, Src0);
}
void _sbb_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::SbbRMW>(DestSrc0, Src1);
}
void _setcc(Variable *Dest, BrCond Condition) {
Context.insert<typename Traits::Insts::Setcc>(Dest, Condition);
}
void _shl(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Shl>(Dest, Src0);
}
void _shld(Variable *Dest, Variable *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Shld>(Dest, Src0, Src1);
}
void _shr(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Shr>(Dest, Src0);
}
void _shrd(Variable *Dest, Variable *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Shrd>(Dest, Src0, Src1);
}
void _shufps(Variable *Dest, Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
Context.insert<typename Traits::Insts::Shufps>(Dest, Src0, Src1);
}
void _movmsk(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Movmsk>(Dest, Src0);
}
void _sqrtss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Sqrtss>(Dest, Src0);
}
void _store(Operand *Value, X86Operand *Mem) {
AutoMemorySandboxer<> _(this, &Value, &Mem);
Context.insert<typename Traits::Insts::Store>(Value, Mem);
}
void _storep(Variable *Value, X86OperandMem *Mem) {
AutoMemorySandboxer<> _(this, &Value, &Mem);
Context.insert<typename Traits::Insts::StoreP>(Value, Mem);
}
void _storeq(Operand *Value, X86OperandMem *Mem) {
AutoMemorySandboxer<> _(this, &Value, &Mem);
Context.insert<typename Traits::Insts::StoreQ>(Value, Mem);
}
void _stored(Operand *Value, X86OperandMem *Mem) {
AutoMemorySandboxer<> _(this, &Value, &Mem);
Context.insert<typename Traits::Insts::StoreD>(Value, Mem);
}
void _sub(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Sub>(Dest, Src0);
}
void _sub_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::SubRMW>(DestSrc0, Src1);
}
void _sub_sp(Operand *Adjustment) {
dispatchToConcrete(&Traits::ConcreteTarget::_sub_sp, std::move(Adjustment));
}
void _subps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Subps>(Dest, Src0);
}
void _subss(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Subss>(Dest, Src0);
}
void _test(Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Src0, &Src1);
Context.insert<typename Traits::Insts::Test>(Src0, Src1);
}
void _ucomiss(Operand *Src0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &Src0, &Src1);
Context.insert<typename Traits::Insts::Ucomiss>(Src0, Src1);
}
void _ud2() { Context.insert<typename Traits::Insts::UD2>(); }
void _unlink_bp() { dispatchToConcrete(&Traits::ConcreteTarget::_unlink_bp); }
void _xadd(Operand *Dest, Variable *Src, bool Locked) {
AutoMemorySandboxer<> _(this, &Dest, &Src);
Context.insert<typename Traits::Insts::Xadd>(Dest, Src, Locked);
// The xadd exchanges Dest and Src (modifying Src). Model that update with
// a FakeDef followed by a FakeUse.
Context.insert<InstFakeDef>(Src, llvm::dyn_cast<Variable>(Dest));
_set_dest_redefined();
Context.insert<InstFakeUse>(Src);
}
void _xchg(Operand *Dest, Variable *Src) {
AutoMemorySandboxer<> _(this, &Dest, &Src);
Context.insert<typename Traits::Insts::Xchg>(Dest, Src);
// The xchg modifies Dest and Src -- model that update with a
// FakeDef/FakeUse.
Context.insert<InstFakeDef>(Src, llvm::dyn_cast<Variable>(Dest));
_set_dest_redefined();
Context.insert<InstFakeUse>(Src);
}
void _xor(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Xor>(Dest, Src0);
}
void _xorps(Variable *Dest, Operand *Src0) {
AutoMemorySandboxer<> _(this, &Dest, &Src0);
Context.insert<typename Traits::Insts::Xorps>(Dest, Src0);
}
void _xor_rmw(X86OperandMem *DestSrc0, Operand *Src1) {
AutoMemorySandboxer<> _(this, &DestSrc0, &Src1);
Context.insert<typename Traits::Insts::XorRMW>(DestSrc0, Src1);
}
void _iaca_start() {
if (!BuildDefs::minimal())
Context.insert<typename Traits::Insts::IacaStart>();
}
void _iaca_end() {
if (!BuildDefs::minimal())
Context.insert<typename Traits::Insts::IacaEnd>();
}
/// This class helps wrap IACA markers around the code generated by the
/// current scope. It means you don't need to put an end before each return.
class ScopedIacaMark {
ScopedIacaMark(const ScopedIacaMark &) = delete;
ScopedIacaMark &operator=(const ScopedIacaMark &) = delete;
public:
ScopedIacaMark(TargetX86Base *Lowering) : Lowering(Lowering) {
Lowering->_iaca_start();
}
~ScopedIacaMark() { end(); }
void end() {
if (!Lowering)
return;
Lowering->_iaca_end();
Lowering = nullptr;
}
private:
TargetX86Base *Lowering;
};
bool optimizeScalarMul(Variable *Dest, Operand *Src0, int32_t Src1);
void findRMW();
InstructionSetEnum InstructionSet = Traits::InstructionSet::Begin;
bool IsEbpBasedFrame = false;
bool NeedsStackAlignment = false;
size_t SpillAreaSizeBytes = 0;
size_t FixedAllocaSizeBytes = 0;
size_t FixedAllocaAlignBytes = 0;
bool PrologEmitsFixedAllocas = false;
uint32_t MaxOutArgsSizeBytes = 0;
static std::array<SmallBitVector, RCX86_NUM> TypeToRegisterSet;
static std::array<SmallBitVector, RCX86_NUM> TypeToRegisterSetUnfiltered;
static std::array<SmallBitVector, Traits::RegisterSet::Reg_NUM>
RegisterAliases;
SmallBitVector RegsUsed;
std::array<VarList, IceType_NUM> PhysicalRegisters;
// RebasePtr is a Variable that holds the Rebasing pointer (if any) for the
// current sandboxing type.
Variable *RebasePtr = nullptr;
/// Randomize a given immediate operand
Operand *randomizeOrPoolImmediate(Constant *Immediate,
RegNumT RegNum = RegNumT());
X86OperandMem *randomizeOrPoolImmediate(X86OperandMem *MemOperand,
RegNumT RegNum = RegNumT());
bool RandomizationPoolingPaused = false;
private:
/// dispatchToConcrete is the template voodoo that allows TargetX86Base to
/// invoke methods in Machine (which inherits from TargetX86Base) without
/// having to rely on virtual method calls. There are two overloads, one for
/// non-void types, and one for void types. We need this becase, for non-void
/// types, we need to return the method result, where as for void, we don't.
/// While it is true that the code compiles without the void "version", there
/// used to be a time when compilers would reject such code.
///
/// This machinery is far from perfect. Note that, in particular, the
/// arguments provided to dispatchToConcrete() need to match the arguments for
/// Method **exactly** (i.e., no argument promotion is performed.)
template <typename Ret, typename... Args>
typename std::enable_if<!std::is_void<Ret>::value, Ret>::type
dispatchToConcrete(Ret (ConcreteTarget::*Method)(Args...), Args &&... args) {
return (static_cast<ConcreteTarget *>(this)->*Method)(
std::forward<Args>(args)...);
}
template <typename... Args>
void dispatchToConcrete(void (ConcreteTarget::*Method)(Args...),
Args &&... args) {
(static_cast<ConcreteTarget *>(this)->*Method)(std::forward<Args>(args)...);
}
void lowerShift64(InstArithmetic::OpKind Op, Operand *Src0Lo, Operand *Src0Hi,
Operand *Src1Lo, Variable *DestLo, Variable *DestHi);
/// Emit the code for a combined operation and consumer instruction, or set
/// the destination variable of the operation if Consumer == nullptr.
void lowerIcmpAndConsumer(const InstIcmp *Icmp, const Inst *Consumer);
void lowerFcmpAndConsumer(const InstFcmp *Fcmp, const Inst *Consumer);
void lowerArithAndConsumer(const InstArithmetic *Arith, const Inst *Consumer);
/// Emit a setcc instruction if Consumer == nullptr; otherwise emit a
/// specialized version of Consumer.
void setccOrConsumer(BrCond Condition, Variable *Dest, const Inst *Consumer);
/// Emit a mov [1|0] instruction if Consumer == nullptr; otherwise emit a
/// specialized version of Consumer.
void movOrConsumer(bool IcmpResult, Variable *Dest, const Inst *Consumer);
/// Emit the code for instructions with a vector type.
void lowerIcmpVector(const InstIcmp *Icmp);
void lowerFcmpVector(const InstFcmp *Icmp);
void lowerSelectVector(const InstSelect *Instr);
/// Helpers for select lowering.
void lowerSelectMove(Variable *Dest, BrCond Cond, Operand *SrcT,
Operand *SrcF);
void lowerSelectIntMove(Variable *Dest, BrCond Cond, Operand *SrcT,
Operand *SrcF);
/// Generic helper to move an arbitrary type from Src to Dest.
void lowerMove(Variable *Dest, Operand *Src, bool IsRedefinition);
/// Optimizations for idiom recognition.
bool lowerOptimizeFcmpSelect(const InstFcmp *Fcmp, const InstSelect *Select);
/// Complains loudly if invoked because the cpu can handle 64-bit types
/// natively.
template <typename T = Traits>
typename std::enable_if<T::Is64Bit, void>::type lowerIcmp64(const InstIcmp *,
const Inst *) {
llvm::report_fatal_error(
"Hey, yo! This is x86-64. Watcha doin'? (lowerIcmp64)");
}
/// x86lowerIcmp64 handles 64-bit icmp lowering.
template <typename T = Traits>
typename std::enable_if<!T::Is64Bit, void>::type
lowerIcmp64(const InstIcmp *Icmp, const Inst *Consumer);
BoolFolding<Traits> FoldingInfo;
/// Helpers for lowering ShuffleVector
/// @{
Variable *lowerShuffleVector_AllFromSameSrc(Variable *Src, SizeT Index0,
SizeT Index1, SizeT Index2,
SizeT Index3);
static constexpr SizeT IGNORE_INDEX = 0x80000000u;
Variable *lowerShuffleVector_TwoFromSameSrc(Variable *Src0, SizeT Index0,
SizeT Index1, Variable *Src1,
SizeT Index2, SizeT Index3);
static constexpr SizeT UNIFIED_INDEX_0 = 0;
static constexpr SizeT UNIFIED_INDEX_1 = 2;
Variable *lowerShuffleVector_UnifyFromDifferentSrcs(Variable *Src0,
SizeT Index0,
Variable *Src1,
SizeT Index1);
static constexpr SizeT CLEAR_ALL_BITS = 0x80;
SizeT PshufbMaskCount = 0;
GlobalString lowerShuffleVector_NewMaskName();
ConstantRelocatable *lowerShuffleVector_CreatePshufbMask(
int8_t Idx0, int8_t Idx1, int8_t Idx2, int8_t Idx3, int8_t Idx4,
int8_t Idx5, int8_t Idx6, int8_t Idx7, int8_t Idx8, int8_t Idx9,
int8_t Idx10, int8_t Idx11, int8_t Idx12, int8_t Idx13, int8_t Idx14,
int8_t Idx15);
void lowerShuffleVector_UsingPshufb(Variable *Dest, Operand *Src0,
Operand *Src1, int8_t Idx0, int8_t Idx1,
int8_t Idx2, int8_t Idx3, int8_t Idx4,
int8_t Idx5, int8_t Idx6, int8_t Idx7,
int8_t Idx8, int8_t Idx9, int8_t Idx10,
int8_t Idx11, int8_t Idx12, int8_t Idx13,
int8_t Idx14, int8_t Idx15);
/// @}
static FixupKind PcRelFixup;
static FixupKind AbsFixup;
};
template <typename TraitsType>
class TargetDataX86 final : public TargetDataLowering {
using Traits = TraitsType;
TargetDataX86() = delete;
TargetDataX86(const TargetDataX86 &) = delete;
TargetDataX86 &operator=(const TargetDataX86 &) = delete;
public:
~TargetDataX86() override = default;
static std::unique_ptr<TargetDataLowering> create(GlobalContext *Ctx) {
return makeUnique<TargetDataX86>(Ctx);
}
void lowerGlobals(const VariableDeclarationList &Vars,
const std::string &SectionSuffix) override;
void lowerConstants() override;
void lowerJumpTables() override;
private:
ENABLE_MAKE_UNIQUE;
explicit TargetDataX86(GlobalContext *Ctx) : TargetDataLowering(Ctx){};
template <typename T> static void emitConstantPool(GlobalContext *Ctx);
};
class TargetHeaderX86 : public TargetHeaderLowering {
TargetHeaderX86() = delete;
TargetHeaderX86(const TargetHeaderX86 &) = delete;
TargetHeaderX86 &operator=(const TargetHeaderX86 &) = delete;
public:
~TargetHeaderX86() = default;
static std::unique_ptr<TargetHeaderLowering> create(GlobalContext *Ctx) {
return makeUnique<TargetHeaderX86>(Ctx);
}
private:
ENABLE_MAKE_UNIQUE;
explicit TargetHeaderX86(GlobalContext *Ctx) : TargetHeaderLowering(Ctx) {}
};
} // end of namespace X86NAMESPACE
} // end of namespace Ice
#include "IceTargetLoweringX86BaseImpl.h"
#endif // SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H