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//===- llvm/unittest/IR/WaymarkTest.cpp - getUser() unit tests ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// we perform white-box tests
//
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "gtest/gtest.h"
#include <algorithm>
namespace llvm {
namespace {
TEST(WaymarkTest, NativeArray) {
LLVMContext Context;
static uint8_t tail[22] = "s02s33s30y2y0s1x0syxS";
Value * values[22];
std::transform(tail, tail + 22, values, [&](char c) {
return ConstantInt::get(Type::getInt8Ty(Context), c);
});
FunctionType *FT = FunctionType::get(Type::getVoidTy(Context), true);
std::unique_ptr<Function> F(
Function::Create(FT, GlobalValue::ExternalLinkage));
const CallInst *A = CallInst::Create(F.get(), makeArrayRef(values));
ASSERT_NE(A, (const CallInst*)nullptr);
ASSERT_EQ(1U + 22, A->getNumOperands());
const Use *U = &A->getOperandUse(0);
const Use *Ue = &A->getOperandUse(22);
for (; U != Ue; ++U)
{
EXPECT_EQ(A, U->getUser());
}
delete A;
}
TEST(WaymarkTest, TwoBit) {
Use* many = (Use*)calloc(sizeof(Use), 8212 + 1);
ASSERT_TRUE(many);
Use::initTags(many, many + 8212);
for (Use *U = many, *Ue = many + 8212 - 1; U != Ue; ++U)
{
EXPECT_EQ(reinterpret_cast<User *>(Ue + 1), U->getUser());
}
free(many);
}
} // end anonymous namespace
} // end namespace llvm
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