1//===-- OpDescriptor.cpp --------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/FuzzMutate/OpDescriptor.h"
10#include "llvm/IR/Constants.h"
11
12using namespace llvm;
13using namespace fuzzerop;
14
15void fuzzerop::makeConstantsWithType(Type *T, std::vector<Constant *> &Cs) {
16  if (auto *IntTy = dyn_cast<IntegerType>(T)) {
17    uint64_t W = IntTy->getBitWidth();
18    Cs.push_back(ConstantInt::get(IntTy, APInt::getMaxValue(W)));
19    Cs.push_back(ConstantInt::get(IntTy, APInt::getMinValue(W)));
20    Cs.push_back(ConstantInt::get(IntTy, APInt::getSignedMaxValue(W)));
21    Cs.push_back(ConstantInt::get(IntTy, APInt::getSignedMinValue(W)));
22    Cs.push_back(ConstantInt::get(IntTy, APInt::getOneBitSet(W, W / 2)));
23  } else if (T->isFloatingPointTy()) {
24    auto &Ctx = T->getContext();
25    auto &Sem = T->getFltSemantics();
26    Cs.push_back(ConstantFP::get(Ctx, APFloat::getZero(Sem)));
27    Cs.push_back(ConstantFP::get(Ctx, APFloat::getLargest(Sem)));
28    Cs.push_back(ConstantFP::get(Ctx, APFloat::getSmallest(Sem)));
29  } else
30    Cs.push_back(UndefValue::get(T));
31}
32
33std::vector<Constant *> fuzzerop::makeConstantsWithType(Type *T) {
34  std::vector<Constant *> Result;
35  makeConstantsWithType(T, Result);
36  return Result;
37}
38