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
12 using namespace llvm;
13 using namespace fuzzerop;
14
makeConstantsWithType(Type * T,std::vector<Constant * > & Cs)15 void 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
makeConstantsWithType(Type * T)33 std::vector<Constant *> fuzzerop::makeConstantsWithType(Type *T) {
34 std::vector<Constant *> Result;
35 makeConstantsWithType(T, Result);
36 return Result;
37 }
38