1//===- llvm/unittest/IR/WaymarkTest.cpp - getUser() unit tests ------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// we perform white-box tests
11//
12#include "llvm/IR/Function.h"
13#include "llvm/IR/Instructions.h"
14#include "llvm/IR/LLVMContext.h"
15#include "gtest/gtest.h"
16#include <algorithm>
17
18namespace llvm {
19namespace {
20
21Constant *char2constant(char c) {
22  return ConstantInt::get(Type::getInt8Ty(getGlobalContext()), c);
23}
24
25
26TEST(WaymarkTest, NativeArray) {
27  static uint8_t tail[22] = "s02s33s30y2y0s1x0syxS";
28  Value * values[22];
29  std::transform(tail, tail + 22, values, char2constant);
30  FunctionType *FT = FunctionType::get(Type::getVoidTy(getGlobalContext()), true);
31  Function *F = Function::Create(FT, GlobalValue::ExternalLinkage);
32  const CallInst *A = CallInst::Create(F, makeArrayRef(values));
33  ASSERT_NE(A, (const CallInst*)NULL);
34  ASSERT_EQ(1U + 22, A->getNumOperands());
35  const Use *U = &A->getOperandUse(0);
36  const Use *Ue = &A->getOperandUse(22);
37  for (; U != Ue; ++U)
38  {
39    EXPECT_EQ(A, U->getUser());
40  }
41  delete A;
42}
43
44TEST(WaymarkTest, TwoBit) {
45  Use* many = (Use*)calloc(sizeof(Use), 8212 + 1);
46  ASSERT_TRUE(many);
47  Use::initTags(many, many + 8212);
48  for (Use *U = many, *Ue = many + 8212 - 1; U != Ue; ++U)
49  {
50    EXPECT_EQ(reinterpret_cast<User *>(Ue + 1), U->getUser());
51  }
52  free(many);
53}
54
55}  // end anonymous namespace
56}  // end namespace llvm
57