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llvmir_emul.cpp
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#include <iostream>
#include <llvm/IR/CallSite.h>
#include <llvm/IR/GetElementPtrTypeIterator.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/InstVisitor.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Type.h>
#include <llvm/IR/DataLayout.h>
#include <llvm/Support/CommandLine.h>
#include <llvm/Support/Debug.h>
#include <llvm/Support/DynamicLibrary.h>
#include <llvm/Support/Format.h>
#include <llvm/Support/ManagedStatic.h>
#include <llvm/Support/MathExtras.h>
#include <llvm/Support/Memory.h>
#include <llvm/Support/MemoryBuffer.h>
#include <llvm/Support/Path.h>
#include <llvm/Support/PrettyStackTrace.h>
#include <llvm/Support/Process.h>
#include <llvm/Support/Program.h>
#include <llvm/Support/Signals.h>
#include <llvm/Support/SourceMgr.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Support/raw_ostream.h>
#include "llvm/IR/ValueSymbolTable.h"
#include <llvm/IR/GetElementPtrTypeIterator.h>
#include <llvm/IR/Function.h>
#include <llvm/ADT/ArrayRef.h>
#include <llvm/IRReader/IRReader.h>
#include "llvmir-emul.h"
#include <fstream>
#include <time.h>
using namespace llvm;
using namespace std;
namespace retdec {
namespace llvmir_emul {
namespace {
template<typename T>
std::string llvmObjToString(const T *t) {
std::string str;
llvm::raw_string_ostream ss(str);
if (t) {
t->print(ss);
} else {
ss << "nullptr";
}
return ss.str();
}
char* readFromFile(string str, int length)
{
char c;
int size = length/8;
if(8 * size < length) size += 2;
char *array_c = new char[size];
ifstream infile;
infile.open(str);
if(!infile.is_open()){
return "";
// ****
}
int i = 0;
while(!infile.eof())
{
infile>>c;
array_c[i] = c;
i++;
if(i/2==0)
{
infile>>c;
if(i==size)
{
infile.close();
return array_c;
}
}
}
}
bool isNum(string str)
{
stringstream sin(str);
double d;
char c;
if(!(sin >> d))
{
return false;
}
if (sin >> c)
{
return false;
}
return true;
}
llvm::GenericValue getRandomValue(int type, int length)
{
llvm::GenericValue gv;
string str = "./1611224159_random.txt";
int i = 0;
llvm::GenericValue result;
string tmp = readFromFile(str, length);
char *numTmp = new char[tmp.size()];
llvm::StringRef strRef = tmp;
int size = length/8;
if(8 * size < length) size += 2;
switch(type){
case 0:
break;
case 1:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::IEEEhalf, tmp).convertToFloat();
break;
case 2:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::IEEEsingle, tmp).convertToFloat();
break;
case 3:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::IEEEdouble, tmp).convertToFloat();
break;
case 4:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::x87DoubleExtended, tmp).convertToFloat();
break;
case 5:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::IEEEquad, tmp).convertToFloat();
break;
case 6:
tmp = "0X" + tmp.substr(0, tmp.size() - 2) + "p" + tmp.substr(tmp.size() - 2, tmp.size());
result.FloatVal=llvm::APFloat(llvm::APFloat::PPCDoubleDouble, tmp).convertToFloat();
break;
case 7:
case 8:
case 9:
break;
case 10:
result.IntVal = llvm::APInt(length, strRef, 16);
break;
case 11:
case 12:
case 13:
break;
case 14:
tmp = "0X" + tmp;
for(int i=0; i<tmp.size(); i++ )
{
numTmp[i] = tmp[i];
}
result.PointerVal = reinterpret_cast<llvm::PointerTy>(strtol(numTmp, NULL, 16));
break;
case 15:
break;
}
}
//
//=============================================================================
// Binary Instruction Implementations
//=============================================================================
//
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
case Type::TY##TyID: \
Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \
break
void executeFAddInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty) {
switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(+, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(+, Double);
default:
dbgs() << "Unhandled type for FAdd instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFSubInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(-, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(-, Double);
default:
dbgs() << "Unhandled type for FSub instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFMulInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(*, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(*, Double);
default:
dbgs() << "Unhandled type for FMul instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFDivInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(/, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(/, Double);
default:
dbgs() << "Unhandled type for FDiv instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFRemInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
case Type::FloatTyID:
Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
break;
case Type::X86_FP80TyID:
case Type::DoubleTyID:
Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
break;
default:
dbgs() << "Unhandled type for Rem instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
#define IMPLEMENT_INTEGER_ICMP(OP, TY) \
case Type::IntegerTyID: \
Dest.IntVal = APInt(1,Src1.IntVal.sextOrTrunc(1).OP(Src2.IntVal.sextOrTrunc(1))); \
break;
#define IMPLEMENT_VECTOR_INTEGER_ICMP(OP, TY) \
case Type::VectorTyID: \
{ \
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
for(uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
Dest.AggregateVal[_i].IntVal = APInt(1, \
Src1.AggregateVal[_i].IntVal.OP(Src2.AggregateVal[_i].IntVal));\
} break;
// Handle pointers specially because they must be compared with only as much
// width as the host has. We _do not_ want to be comparing 64 bit values when
// running on a 32-bit target, otherwise the upper 32 bits might mess up
// comparisons if they contain garbage.
// Matula: This may not be the case for emulation, but it will probable be ok.
#define IMPLEMENT_POINTER_ICMP(OP) \
case Type::PointerTyID: \
Dest.IntVal = APInt(1, (reinterpret_cast<void *>(reinterpret_cast<intptr_t>(Src1.PointerVal))) OP \
(reinterpret_cast<void *>(reinterpret_cast<intptr_t>(Src2.PointerVal)))); \
break;
GenericValue executeICMP_EQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
// cout << reinterpret_cast<void*>(reinterpret_cast<intptr_t>(Src1.PointerVal)) << " "
// << reinterpret_cast<void*>(reinterpret_cast<intptr_t>(Src2.PointerVal)) << endl;
// cout << Ty->getTypeID() << endl;
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(eq,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(eq,Ty);
IMPLEMENT_POINTER_ICMP(==);
default:
dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_NE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ne,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ne,Ty);
IMPLEMENT_POINTER_ICMP(!=);
default:
dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_ULT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ult,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ult,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
dbgs() << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SLT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(slt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(slt,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
dbgs() << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_UGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ugt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ugt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
dbgs() << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sgt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sgt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
dbgs() << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_ULE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ule,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ule,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
dbgs() << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SLE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sle,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sle,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
dbgs() << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_UGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(uge,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(uge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
dbgs() << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sge,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
dbgs() << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
//
//=============================================================================
// Binary Instruction Implementations(Float)
//=============================================================================
//
#define IMPLEMENT_FCMP(OP, TY) \
case Type::TY##TyID: \
Dest.IntVal = APInt(1,Src1.TY##Val OP Src2.TY##Val); \
break
#define IMPLEMENT_VECTOR_FCMP_T(OP, TY) \
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
for( uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
Dest.AggregateVal[_i].IntVal = APInt(1, \
Src1.AggregateVal[_i].TY##Val OP Src2.AggregateVal[_i].TY##Val);\
break;
#define IMPLEMENT_VECTOR_FCMP(OP) \
case Type::VectorTyID: \
if (cast<VectorType>(Ty)->getElementType()->isFloatTy()) \
{ \
IMPLEMENT_VECTOR_FCMP_T(OP, Float); \
} \
else \
{ \
IMPLEMENT_VECTOR_FCMP_T(OP, Double); \
}
GenericValue executeFCMP_OEQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(==, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(==, Double);
IMPLEMENT_VECTOR_FCMP(==);
default:
dbgs() << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
#define IMPLEMENT_SCALAR_NANS(TY, X,Y) \
if (TY->isFloatTy()) \
{ \
if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) \
{ \
Dest.IntVal = APInt(1,false); \
return Dest; \
} \
} \
else \
{ \
if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) \
{ \
Dest.IntVal = APInt(1,false); \
return Dest; \
} \
}
#define MASK_VECTOR_NANS_T(X,Y, TZ, FLAG) \
assert(X.AggregateVal.size() == Y.AggregateVal.size()); \
Dest.AggregateVal.resize( X.AggregateVal.size() ); \
for( uint32_t _i=0;_i<X.AggregateVal.size();_i++) \
{ \
if (X.AggregateVal[_i].TZ##Val != X.AggregateVal[_i].TZ##Val || \
Y.AggregateVal[_i].TZ##Val != Y.AggregateVal[_i].TZ##Val) \
Dest.AggregateVal[_i].IntVal = APInt(1,FLAG); \
else \
{ \
Dest.AggregateVal[_i].IntVal = APInt(1,!FLAG); \
} \
}
#define MASK_VECTOR_NANS(TY, X,Y, FLAG) \
if (TY->isVectorTy()) \
{ \
if (cast<VectorType>(TY)->getElementType()->isFloatTy()) \
{ \
MASK_VECTOR_NANS_T(X, Y, Float, FLAG) \
} \
else \
{ \
MASK_VECTOR_NANS_T(X, Y, Double, FLAG) \
} \
}
static GenericValue executeFCMP_ONE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
// if input is scalar value and Src1 or Src2 is NaN return false
IMPLEMENT_SCALAR_NANS(Ty, Src1, Src2)
// if vector input detect NaNs and fill mask
MASK_VECTOR_NANS(Ty, Src1, Src2, false)
GenericValue DestMask = Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(!=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(!=, Double);
IMPLEMENT_VECTOR_FCMP(!=);
default:
dbgs() << "Unhandled type for FCmp NE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
// in vector case mask out NaN elements
if (Ty->isVectorTy())
for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
if (DestMask.AggregateVal[_i].IntVal == false)
Dest.AggregateVal[_i].IntVal = APInt(1,false);
return Dest;
}
GenericValue executeFCMP_OLE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(<=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(<=, Double);
IMPLEMENT_VECTOR_FCMP(<=);
default:
dbgs() << "Unhandled type for FCmp LE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(>=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(>=, Double);
IMPLEMENT_VECTOR_FCMP(>=);
default:
dbgs() << "Unhandled type for FCmp GE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OLT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(<, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(<, Double);
IMPLEMENT_VECTOR_FCMP(<);
default:
dbgs() << "Unhandled type for FCmp LT instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(>, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(>, Double);
IMPLEMENT_VECTOR_FCMP(>);
default:
dbgs() << "Unhandled type for FCmp GT instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
#define IMPLEMENT_UNORDERED(TY, X,Y) \
if (TY->isFloatTy()) \
{ \
if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) \
{ \
Dest.IntVal = APInt(1,true); \
return Dest; \
} \
} else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) \
{ \
Dest.IntVal = APInt(1,true); \
return Dest; \
}
#define IMPLEMENT_VECTOR_UNORDERED(TY, X, Y, FUNC) \
if (TY->isVectorTy()) \
{ \
GenericValue DestMask = Dest; \
Dest = FUNC(Src1, Src2, Ty); \
for (size_t _i = 0; _i < Src1.AggregateVal.size(); _i++) \
if (DestMask.AggregateVal[_i].IntVal == true) \
Dest.AggregateVal[_i].IntVal = APInt(1, true); \
return Dest; \
}
GenericValue executeFCMP_UEQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OEQ)
return executeFCMP_OEQ(Src1, Src2, Ty);
}
GenericValue executeFCMP_UNE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_ONE)
return executeFCMP_ONE(Src1, Src2, Ty);
}
GenericValue executeFCMP_ULE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLE)
return executeFCMP_OLE(Src1, Src2, Ty);
}
GenericValue executeFCMP_UGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGE)
return executeFCMP_OGE(Src1, Src2, Ty);
}
GenericValue executeFCMP_ULT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLT)
return executeFCMP_OLT(Src1, Src2, Ty);
}
GenericValue executeFCMP_UGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGT)
return executeFCMP_OGT(Src1, Src2, Ty);
}
GenericValue executeFCMP_ORD(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
if (cast<VectorType>(Ty)->getElementType()->isFloatTy())
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].FloatVal ==
Src1.AggregateVal[_i].FloatVal) &&
(Src2.AggregateVal[_i].FloatVal ==
Src2.AggregateVal[_i].FloatVal)));
}
else
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].DoubleVal ==
Src1.AggregateVal[_i].DoubleVal) &&
(Src2.AggregateVal[_i].DoubleVal ==
Src2.AggregateVal[_i].DoubleVal)));
}
}
else if (Ty->isFloatTy())
{
Dest.IntVal = APInt(1,(Src1.FloatVal == Src1.FloatVal &&
Src2.FloatVal == Src2.FloatVal));
}
else
{
Dest.IntVal = APInt(1,(Src1.DoubleVal == Src1.DoubleVal &&
Src2.DoubleVal == Src2.DoubleVal));
}
return Dest;
}
GenericValue executeFCMP_UNO(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
if (cast<VectorType>(Ty)->getElementType()->isFloatTy())
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].FloatVal !=
Src1.AggregateVal[_i].FloatVal) ||
(Src2.AggregateVal[_i].FloatVal !=
Src2.AggregateVal[_i].FloatVal)));
}
else
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(1,
( (Src1.AggregateVal[_i].DoubleVal !=
Src1.AggregateVal[_i].DoubleVal) ||
(Src2.AggregateVal[_i].DoubleVal !=
Src2.AggregateVal[_i].DoubleVal)));
}
}
else if (Ty->isFloatTy())
{
Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal ||
Src2.FloatVal != Src2.FloatVal));
}
else
{
Dest.IntVal = APInt(1,(Src1.DoubleVal != Src1.DoubleVal ||
Src2.DoubleVal != Src2.DoubleVal));
}
return Dest;
}
GenericValue executeFCMP_BOOL(
GenericValue Src1,
GenericValue Src2,
Type *Ty,
const bool val)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
{
Dest.AggregateVal[_i].IntVal = APInt(1,val);
}
}
else
{
Dest.IntVal = APInt(1, val);
}
return Dest;
}
GenericValue executeCmpInst(
unsigned predicate,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Result;
switch (predicate)
{
case ICmpInst::ICMP_EQ: return executeICMP_EQ(Src1, Src2, Ty);
case ICmpInst::ICMP_NE: return executeICMP_NE(Src1, Src2, Ty);
case ICmpInst::ICMP_UGT: return executeICMP_UGT(Src1, Src2, Ty);
case ICmpInst::ICMP_SGT: return executeICMP_SGT(Src1, Src2, Ty);
case ICmpInst::ICMP_ULT: return executeICMP_ULT(Src1, Src2, Ty);
case ICmpInst::ICMP_SLT: return executeICMP_SLT(Src1, Src2, Ty);
case ICmpInst::ICMP_UGE: return executeICMP_UGE(Src1, Src2, Ty);
case ICmpInst::ICMP_SGE: return executeICMP_SGE(Src1, Src2, Ty);
case ICmpInst::ICMP_ULE: return executeICMP_ULE(Src1, Src2, Ty);
case ICmpInst::ICMP_SLE: return executeICMP_SLE(Src1, Src2, Ty);
case FCmpInst::FCMP_ORD: return executeFCMP_ORD(Src1, Src2, Ty);
case FCmpInst::FCMP_UNO: return executeFCMP_UNO(Src1, Src2, Ty);
case FCmpInst::FCMP_OEQ: return executeFCMP_OEQ(Src1, Src2, Ty);
case FCmpInst::FCMP_UEQ: return executeFCMP_UEQ(Src1, Src2, Ty);
case FCmpInst::FCMP_ONE: return executeFCMP_ONE(Src1, Src2, Ty);
case FCmpInst::FCMP_UNE: return executeFCMP_UNE(Src1, Src2, Ty);
case FCmpInst::FCMP_OLT: return executeFCMP_OLT(Src1, Src2, Ty);
case FCmpInst::FCMP_ULT: return executeFCMP_ULT(Src1, Src2, Ty);
case FCmpInst::FCMP_OGT: return executeFCMP_OGT(Src1, Src2, Ty);
case FCmpInst::FCMP_UGT: return executeFCMP_UGT(Src1, Src2, Ty);
case FCmpInst::FCMP_OLE: return executeFCMP_OLE(Src1, Src2, Ty);
case FCmpInst::FCMP_ULE: return executeFCMP_ULE(Src1, Src2, Ty);
case FCmpInst::FCMP_OGE: return executeFCMP_OGE(Src1, Src2, Ty);
case FCmpInst::FCMP_UGE: return executeFCMP_UGE(Src1, Src2, Ty);
case FCmpInst::FCMP_FALSE: return executeFCMP_BOOL(Src1, Src2, Ty, false);
case FCmpInst::FCMP_TRUE: return executeFCMP_BOOL(Src1, Src2, Ty, true);
default:
dbgs() << "Unhandled Cmp predicate\n";
llvm_unreachable(nullptr);
}
return Result;
}
//
//=============================================================================
// Ternary Instruction Implementations
//=============================================================================
//
GenericValue executeSelectInst(
GenericValue Src1,
GenericValue Src2,
GenericValue Src3,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
assert(Src2.AggregateVal.size() == Src3.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
for (size_t i = 0; i < Src1.AggregateVal.size(); ++i)
Dest.AggregateVal[i] = (Src1.AggregateVal[i].IntVal == 0) ?
Src3.AggregateVal[i] : Src2.AggregateVal[i];
}
else
{
Dest = (Src1.IntVal == 0) ? Src3 : Src2;
}
return Dest;
}
//
//=============================================================================
// Terminator Instruction Implementations
//=============================================================================
//
// switchToNewBasicBlock - This method is used to jump to a new basic block.
// This function handles the actual updating of block and instruction iterators
// as well as execution of all of the PHI nodes in the destination block.
//
// This method does this because all of the PHI nodes must be executed
// atomically, reading their inputs before any of the results are updated. Not
// doing this can cause problems if the PHI nodes depend on other PHI nodes for
// their inputs. If the input PHI node is updated before it is read, incorrect
// results can happen. Thus we use a two phase approach.
//
void switchToNewBasicBlock(
BasicBlock* Dest,
LocalExecutionContext& SF,
GlobalExecutionContext& GC)
{
BasicBlock *PrevBB = SF.curBB; // Remember where we came from...
SF.curBB = Dest; // Update CurBB to branch destination
SF.curInst = SF.curBB->begin(); // Update new instruction ptr...
SF.PHIorNot = false;
// SF.curInst->dump();
if (!isa<PHINode>(SF.curInst))
{
return; // Nothing fancy to do
}
// Loop over all of the PHI nodes in the current block, reading their inputs.
std::vector<GenericValue> ResultValues;
for (; PHINode *PN = dyn_cast<PHINode>(SF.curInst); ++SF.curInst)
{
// Search for the value corresponding to this previous bb...
int i = PN->getBasicBlockIndex(PrevBB);
if(i == -1) {
SF.PHIorNot = true;
return;
}
assert(i != -1 && "PHINode doesn't contain entry for predecessor??");