void equalizeTypes(Value* &Op1, Value* &Op2, bool isSigned, IRBuilder<> Builder){
if (Op1->getType() != Op2->getType()) {
if (Op1->getType()->getIntegerBitWidth() > Op2->getType()->getIntegerBitWidth() ) {
//expand op2
if (isSigned) Op2 = Builder.CreateSExt(Op2, Op1->getType(), "");
else Op2 = Builder.CreateZExt(Op2, Op1->getType(), "");
} else {
//expand op1
if (isSigned) Op1 = Builder.CreateSExt(Op1, Op2->getType(), "");
else Op1 = Builder.CreateZExt(Op1, Op2->getType(), "");
}
}
}
static std::pair<Value*, Value*> getMul64(IRBuilder<> &Builder,
Value *LHS, Value *RHS) {
Type *I32Ty = Builder.getInt32Ty();
Type *I64Ty = Builder.getInt64Ty();
Value *LHS_EXT64 = Builder.CreateZExt(LHS, I64Ty);
Value *RHS_EXT64 = Builder.CreateZExt(RHS, I64Ty);
Value *MUL64 = Builder.CreateMul(LHS_EXT64, RHS_EXT64);
Value *Lo = Builder.CreateTrunc(MUL64, I32Ty);
Value *Hi = Builder.CreateLShr(MUL64, Builder.getInt64(32));
Hi = Builder.CreateTrunc(Hi, I32Ty);
return std::make_pair(Lo, Hi);
}