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instr.h
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instr.h
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#pragma once
// Copyright (c) 2018-present The Alive2 Authors.
// Distributed under the MIT license that can be found in the LICENSE file.
#include "ir/value.h"
#include <string>
#include <utility>
#include <vector>
namespace IR {
class Function;
class Instr : public Value {
protected:
Instr(Type &type, std::string &&name) : Value(type, std::move(name)) {}
public:
virtual std::vector<Value*> operands() const = 0;
virtual bool propagatesPoison() const = 0;
virtual bool hasSideEffects() const = 0;
smt::expr getTypeConstraints() const override;
virtual smt::expr getTypeConstraints(const Function &f) const = 0;
virtual std::unique_ptr<Instr> dup(Function &f,
const std::string &suffix) const = 0;
};
class BinOp final : public Instr {
public:
enum Op { Add, Sub, Mul, SDiv, UDiv, SRem, URem, Shl, AShr, LShr,
SAdd_Sat, UAdd_Sat, SSub_Sat, USub_Sat, SShl_Sat, UShl_Sat,
SAdd_Overflow, UAdd_Overflow, SSub_Overflow, USub_Overflow,
SMul_Overflow, UMul_Overflow,
And, Or, Xor, Cttz, Ctlz, UMin, UMax, SMin, SMax, Abs };
enum Flags { None = 0, NSW = 1 << 0, NUW = 1 << 1, Exact = 1 << 2, Disjoint = 1 << 3 };
private:
Value *lhs, *rhs;
Op op;
unsigned flags;
bool isDivOrRem() const;
public:
BinOp(Type &type, std::string &&name, Value &lhs, Value &rhs, Op op,
unsigned flags = None);
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FpBinOp final : public Instr {
public:
enum Op { FAdd, FSub, FMul, FDiv, FRem, FMax, FMin, FMaximum, FMinimum,
CopySign };
private:
Value *lhs, *rhs;
Op op;
FastMathFlags fmath;
FpRoundingMode rm;
FpExceptionMode ex;
public:
FpBinOp(Type &type, std::string &&name, Value &lhs, Value &rhs, Op op,
FastMathFlags fmath, FpRoundingMode rm = {}, FpExceptionMode ex = {})
: Instr(type, std::move(name)), lhs(&lhs), rhs(&rhs), op(op), fmath(fmath),
rm(rm), ex(ex) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class UnaryOp final : public Instr {
public:
enum Op {
Copy, BitReverse, BSwap, Ctpop, IsConstant, FFS
};
private:
Value *val;
Op op;
public:
UnaryOp(Type &type, std::string &&name, Value &val, Op op)
: Instr(type, std::move(name)), val(&val), op(op) {}
Op getOp() const { return op; }
Value& getValue() const { return *val; }
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FpUnaryOp final : public Instr {
public:
enum Op {
FAbs, FNeg, Canonicalize, Ceil, Floor, RInt, NearbyInt, Round, RoundEven,
Trunc, Sqrt
};
private:
Value *val;
Op op;
FastMathFlags fmath;
FpRoundingMode rm;
FpExceptionMode ex;
public:
FpUnaryOp(Type &type, std::string &&name, Value &val, Op op,
FastMathFlags fmath, FpRoundingMode rm = {},
FpExceptionMode ex = {})
: Instr(type, std::move(name)), val(&val), op(op), fmath(fmath), rm(rm),
ex(ex) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class UnaryReductionOp final : public Instr {
public:
enum Op {
Add, Mul, And, Or, Xor,
SMax, SMin, UMax, UMin
};
private:
Value *val;
Op op;
public:
UnaryReductionOp(Type &type, std::string &&name, Value &val, Op op)
: Instr(type, std::move(name)), val(&val), op(op) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class TernaryOp final : public Instr {
public:
enum Op { FShl, FShr, SMulFix, UMulFix, SMulFixSat, UMulFixSat };
private:
Value *a, *b, *c;
Op op;
public:
TernaryOp(Type &type, std::string &&name, Value &a, Value &b, Value &c,
Op op)
: Instr(type, std::move(name)), a(&a), b(&b), c(&c), op(op) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FpTernaryOp final : public Instr {
public:
enum Op { FMA, MulAdd };
private:
Value *a, *b, *c;
Op op;
FastMathFlags fmath;
FpRoundingMode rm;
FpExceptionMode ex;
public:
FpTernaryOp(Type &type, std::string &&name, Value &a, Value &b, Value &c,
Op op, FastMathFlags fmath, FpRoundingMode rm = {},
FpExceptionMode ex = {})
: Instr(type, std::move(name)), a(&a), b(&b), c(&c), op(op), fmath(fmath),
rm(rm), ex(ex) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class TestOp final : public Instr {
public:
enum Op { Is_FPClass };
private:
Value *lhs, *rhs;
Op op;
public:
TestOp(Type &type, std::string &&name, Value &lhs, Value &rhs, Op op)
: Instr(type, std::move(name)), lhs(&lhs), rhs(&rhs), op(op) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class ConversionOp final : public Instr {
public:
enum Op { SExt, ZExt, Trunc, BitCast, Ptr2Int, Int2Ptr };
enum Flags { None = 0, NNEG = 1 << 0, NSW = 1 << 1, NUW = 1 << 2 };
private:
Value *val;
Op op;
unsigned flags;
public:
ConversionOp(Type &type, std::string &&name, Value &val, Op op,
unsigned flags = None);
Op getOp() const { return op; }
Value& getValue() const { return *val; }
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FpConversionOp final : public Instr {
public:
enum Op { SIntToFP, UIntToFP, FPToSInt, FPToUInt, FPExt, FPTrunc, LRInt,
LRound };
private:
Value *val;
Op op;
FpRoundingMode rm;
FpExceptionMode ex;
public:
FpConversionOp(Type &type, std::string &&name, Value &val, Op op,
FpRoundingMode rm = {}, FpExceptionMode ex = {})
: Instr(type, std::move(name)), val(&val), op(op), rm(rm), ex(ex) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Select final : public Instr {
Value *cond, *a, *b;
FastMathFlags fmath;
public:
Select(Type &type, std::string &&name, Value &cond, Value &a, Value &b,
FastMathFlags fmath = {})
: Instr(type, std::move(name)), cond(&cond), a(&a), b(&b), fmath(fmath) {}
Value *getTrueValue() const { return a; }
Value *getFalseValue() const { return b; }
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class ExtractValue final : public Instr {
Value *val;
std::vector<unsigned> idxs;
public:
ExtractValue(Type &type, std::string &&name, Value &val)
: Instr(type, std::move(name)), val(&val) {}
void addIdx(unsigned idx);
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class InsertValue final : public Instr {
Value *val, *elt;
std::vector<unsigned> idxs;
public:
InsertValue(Type &type, std::string &&name, Value &val, Value &elt)
: Instr(type, std::move(name)), val(&val), elt(&elt) {}
void addIdx(unsigned idx);
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class ICmp final : public Instr {
public:
enum Cond { EQ, NE, SLE, SLT, SGE, SGT, ULE, ULT, UGE, UGT, Any };
enum PtrCmpMode {
INTEGRAL,
PROVENANCE, // compare pointer provenance & offsets
OFFSETONLY // cmp ofs only. meaningful only when ptrs are based on same obj
};
private:
Value *a, *b;
std::string cond_name;
Cond cond;
bool defined;
PtrCmpMode pcmode = INTEGRAL;
smt::expr cond_var() const;
public:
ICmp(Type &type, std::string &&name, Cond cond, Value &a, Value &b);
bool isPtrCmp() const;
PtrCmpMode getPtrCmpMode() const { return pcmode; }
void setPtrCmpMode(PtrCmpMode mode) { pcmode = mode; }
Cond getCond() const { return cond; }
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FCmp final : public Instr {
public:
enum Cond { OEQ, OGT, OGE, OLT, OLE, ONE, ORD,
UEQ, UGT, UGE, ULT, ULE, UNE, UNO, TRUE, FALSE };
private:
Value *a, *b;
Cond cond;
FastMathFlags fmath;
FpExceptionMode ex;
bool signaling;
public:
FCmp(Type &type, std::string &&name, Cond cond, Value &a, Value &b,
FastMathFlags fmath, FpExceptionMode ex = {}, bool signaling = false)
: Instr(type, std::move(name)), a(&a), b(&b), cond(cond), fmath(fmath),
ex(ex), signaling(signaling) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Freeze final : public Instr {
Value *val;
public:
Freeze(Type &type, std::string &&name, Value &val)
: Instr(type, std::move(name)), val(&val) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Phi final : public Instr {
std::vector<std::pair<Value*, std::string>> values;
FastMathFlags fmath;
public:
Phi(Type &type, std::string &&name, FastMathFlags fmath = {})
: Instr(type, std::move(name)), fmath(fmath) {}
void addValue(Value &val, std::string &&BB_name);
void removeValue(const std::string &BB_name);
void replaceSourceWith(const std::string &from, const std::string &to);
const auto& getValues() const { return values; }
std::vector<std::string> sources() const;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void replace(const std::string &predecessor, Value &newval);
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class JumpInstr : public Instr {
public:
JumpInstr(const char *name) : Instr(Type::voidTy, name) {}
bool propagatesPoison() const override;
bool hasSideEffects() const override;
class target_iterator {
const JumpInstr *instr;
unsigned idx;
public:
target_iterator() = default;
target_iterator(const JumpInstr *instr, unsigned idx)
: instr(instr), idx(idx) {}
const BasicBlock& operator*() const;
target_iterator& operator++(void) { ++idx; return *this; }
bool operator==(const target_iterator &rhs) const { return idx == rhs.idx; }
};
class it_helper {
const JumpInstr *instr;
public:
it_helper(const JumpInstr *instr = nullptr) : instr(instr) {}
target_iterator begin() const { return { instr, 0 }; }
target_iterator end() const;
};
it_helper targets() const { return this; }
virtual void replaceTargetWith(const BasicBlock *From,
const BasicBlock *To) = 0;
};
class Branch final : public JumpInstr {
Value *cond = nullptr;
const BasicBlock *dst_true, *dst_false = nullptr;
public:
Branch(const BasicBlock &dst) : JumpInstr("br"), dst_true(&dst) {}
Branch(Value &cond, const BasicBlock &dst_true, const BasicBlock &dst_false)
: JumpInstr("br"), cond(&cond), dst_true(&dst_true), dst_false(&dst_false){}
auto& getTrue() const { return *dst_true; }
auto getFalse() const { return dst_false; }
void replaceTargetWith(const BasicBlock *F, const BasicBlock *T) override;
std::vector<Value*> operands() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Switch final : public JumpInstr {
Value *value;
const BasicBlock *default_target;
std::vector<std::pair<Value*, const BasicBlock*>> targets;
public:
Switch(Value &value, const BasicBlock &default_target)
: JumpInstr("switch"), value(&value), default_target(&default_target) {}
void addTarget(Value &val, const BasicBlock &target);
auto getNumTargets() const { return targets.size(); }
auto& getTarget(unsigned i) const { return targets[i]; }
auto& getDefault() const { return default_target; }
void replaceTargetWith(const BasicBlock *F, const BasicBlock *T) override;
std::vector<Value*> operands() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Return final : public Instr {
Value *val;
public:
Return(Type &type, Value &val) : Instr(type, "return"), val(&val) {}
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Assume final : public Instr {
public:
enum Kind {
AndNonPoison, /// cond should be non-poison and hold
WellDefined, /// cond only needs to be well defined (can be false)
Align, /// args[0] satisfies alignment args[1]
Dereferenceable, /// args[0] is dereferenceable at least args[1]
DereferenceableOrNull, /// args[0] is null or deref least args[1]
NonNull /// args[0] is a nonnull pointer
};
private:
std::vector<Value*> args;
Kind kind;
public:
Assume(Value &cond, Kind kind);
Assume(std::vector<Value *> &&args, Kind kind);
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
// yields poison if invalid
class AssumeVal final : public Instr {
public:
enum Kind {
Align,
NonNull,
Range,
};
private:
Value *val;
std::vector<Value*> args;
Kind kind;
public:
AssumeVal(Type &type, std::string &&name, Value &val,
std::vector<Value *> &&args, Kind kind);
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class MemInstr : public Instr {
public:
MemInstr(Type &type, std::string &&name) : Instr(type, std::move(name)) {}
bool hasSideEffects() const override;
// If this instruction allocates a memory block, return its size and
// alignment. Returns 0 if it doesn't allocate anything.
virtual std::pair<uint64_t, uint64_t> getMaxAllocSize() const = 0;
// If this instruction performs load or store, return its max access size.
virtual uint64_t getMaxAccessSize() const = 0;
// If this instruction performs pointer arithmetic, return the absolute
// value of the adding offset.
// If this instruction is accessing the memory, it is okay to return 0.
// ex) Given `store i32 0, ptr`, 0 can be returned, because its access size
// already contains the offset.
virtual uint64_t getMaxGEPOffset() const = 0;
struct ByteAccessInfo {
bool hasIntByteAccess = false;
bool doesPtrLoad = false;
bool doesPtrStore = false;
bool observesAddresses = false;
// The maximum size of a byte that this instruction can support.
// If zero, this instruction does not read/write bytes.
// Otherwise, bytes of a memory can be widened to this size.
unsigned byteSize = 0;
bool doesMemAccess() const { return byteSize; }
static ByteAccessInfo intOnly(unsigned byteSize);
static ByteAccessInfo anyType(unsigned byteSize);
static ByteAccessInfo get(const Type &t, bool store, unsigned align);
static ByteAccessInfo full(unsigned byteSize);
};
virtual ByteAccessInfo getByteAccessInfo() const = 0;
};
class Alloc final : public MemInstr {
Value *size, *mul;
uint64_t align;
bool initially_dead = false;
public:
Alloc(Type &type, std::string &&name, Value &size, Value *mul, uint64_t align)
: MemInstr(type, std::move(name)), size(&size), mul(mul), align(align) {}
Value& getSize() const { return *size; }
Value* getMul() const { return mul; }
uint64_t getAlign() const { return align; }
bool initDead() const { return initially_dead; }
void markAsInitiallyDead() { initially_dead = true; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class StartLifetime final : public MemInstr {
Value *ptr;
public:
StartLifetime(Value &ptr) : MemInstr(Type::voidTy, "start_lifetime"),
ptr(&ptr) {}
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class EndLifetime final : public MemInstr {
Value *ptr;
public:
EndLifetime(Value &ptr) : MemInstr(Type::voidTy, "end_lifetime"), ptr(&ptr) {}
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class GEP final : public MemInstr {
Value *ptr;
std::vector<std::pair<uint64_t, Value*>> idxs;
bool inbounds;
public:
GEP(Type &type, std::string &&name, Value &ptr, bool inbounds)
: MemInstr(type, std::move(name)), ptr(&ptr), inbounds(inbounds) {}
void addIdx(uint64_t obj_size, Value &idx);
Value& getPtr() const { return *ptr; }
auto& getIdxs() const { return idxs; }
bool isInBounds() const { return inbounds; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class PtrMask final : public MemInstr {
Value *ptr;
Value *mask;
public:
PtrMask(Type &type, std::string &&name, Value &ptr, Value &mask)
: MemInstr(type, std::move(name)), ptr(&ptr), mask(&mask) {}
Value& getPtr() const { return *ptr; }
std::optional<uint64_t> getExactAlign() const;
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
bool hasSideEffects() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Load final : public MemInstr {
Value *ptr;
uint64_t align;
public:
Load(Type &type, std::string &&name, Value &ptr, uint64_t align)
: MemInstr(type, std::move(name)), ptr(&ptr), align(align) {}
Value& getPtr() const { return *ptr; }
uint64_t getAlign() const { return align; }
void setAlign(uint64_t align) { this->align = align; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Store final : public MemInstr {
Value *ptr, *val;
uint64_t align;
public:
Store(Value &ptr, Value &val, uint64_t align)
: MemInstr(Type::voidTy, "store"), ptr(&ptr), val(&val), align(align) {}
Value& getValue() const { return *val; }
Value& getPtr() const { return *ptr; }
uint64_t getAlign() const { return align; }
void setAlign(uint64_t align) { this->align = align; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxAccessStride() const;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Memset final : public MemInstr {
Value *ptr, *val, *bytes;
uint64_t align;
public:
Memset(Value &ptr, Value &val, Value &bytes, uint64_t align)
: MemInstr(Type::voidTy, "memset"), ptr(&ptr), val(&val), bytes(&bytes),
align(align) {}
Value& getPtr() const { return *ptr; }
Value& getBytes() const { return *bytes; }
uint64_t getAlign() const { return align; }
void setAlign(uint64_t align) { this->align = align; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class MemsetPattern final : public MemInstr {
Value *ptr, *pattern, *bytes;
unsigned pattern_length;
public:
MemsetPattern(Value &ptr, Value &pattern, Value &bytes,
unsigned pattern_length);
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class FillPoison final : public MemInstr {
Value *ptr;
public:
FillPoison(Value &ptr) : MemInstr(Type::voidTy, "fillpoison"), ptr(&ptr) {}
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Memcpy final : public MemInstr {
Value *dst, *src, *bytes;
uint64_t align_dst, align_src;
bool move;
public:
Memcpy(Value &dst, Value &src, Value &bytes,
uint64_t align_dst, uint64_t align_src, bool move)
: MemInstr(Type::voidTy, "memcpy"), dst(&dst), src(&src), bytes(&bytes),
align_dst(align_dst), align_src(align_src), move(move) {}
Value& getSrc() const { return *src; }
Value& getDst() const { return *dst; }
Value& getBytes() const { return *bytes; }
uint64_t getSrcAlign() const { return align_src; }
uint64_t getDstAlign() const { return align_dst; }
void setSrcAlign(uint64_t align) { align_src = align; }
void setDstAlign(uint64_t align) { align_dst = align; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;
bool propagatesPoison() const override;
void rauw(const Value &what, Value &with) override;
void print(std::ostream &os) const override;
StateValue toSMT(State &s) const override;
smt::expr getTypeConstraints(const Function &f) const override;
std::unique_ptr<Instr>
dup(Function &f, const std::string &suffix) const override;
};
class Memcmp final : public MemInstr {
Value *ptr1, *ptr2, *num;
bool is_bcmp;
public:
Memcmp(Type &type, std::string &&name, Value &ptr1, Value &ptr2, Value &num,
bool is_bcmp): MemInstr(type, std::move(name)), ptr1(&ptr1),
ptr2(&ptr2), num(&num), is_bcmp(is_bcmp) {}
Value &getBytes() const { return *num; }
std::pair<uint64_t, uint64_t> getMaxAllocSize() const override;
uint64_t getMaxAccessSize() const override;
uint64_t getMaxGEPOffset() const override;
ByteAccessInfo getByteAccessInfo() const override;
std::vector<Value*> operands() const override;