unittests/IR/MetadataTest.cpp

   1 //===- unittests/IR/MetadataTest.cpp - Metadata 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 #include "llvm/ADT/STLExtras.h"
  11 #include "llvm/IR/Constants.h"
  12 #include "llvm/IR/DebugInfo.h"
  13 #include "llvm/IR/DebugInfoMetadata.h"
  14 #include "llvm/IR/Function.h"
  15 #include "llvm/IR/Instructions.h"
  16 #include "llvm/IR/LLVMContext.h"
  17 #include "llvm/IR/Metadata.h"
  18 #include "llvm/IR/Module.h"
  19 #include "llvm/IR/ModuleSlotTracker.h"
  20 #include "llvm/IR/Type.h"
  21 #include "llvm/IR/Verifier.h"
  22 #include "llvm/Support/raw_ostream.h"
  23 #include "gtest/gtest.h"
  24 using namespace llvm;
  25
  26 namespace {
  27
  28 TEST(ContextAndReplaceableUsesTest, FromContext) {
  29   LLVMContext Context;
  30   ContextAndReplaceableUses CRU(Context);
  31   EXPECT_EQ(&Context, &CRU.getContext());
  32   EXPECT_FALSE(CRU.hasReplaceableUses());
  33   EXPECT_FALSE(CRU.getReplaceableUses());
  34 }
  35
  36 TEST(ContextAndReplaceableUsesTest, FromReplaceableUses) {
  37   LLVMContext Context;
  38   ContextAndReplaceableUses CRU(make_unique<ReplaceableMetadataImpl>(Context));
  39   EXPECT_EQ(&Context, &CRU.getContext());
  40   EXPECT_TRUE(CRU.hasReplaceableUses());
  41   EXPECT_TRUE(CRU.getReplaceableUses());
  42 }
  43
  44 TEST(ContextAndReplaceableUsesTest, makeReplaceable) {
  45   LLVMContext Context;
  46   ContextAndReplaceableUses CRU(Context);
  47   CRU.makeReplaceable(make_unique<ReplaceableMetadataImpl>(Context));
  48   EXPECT_EQ(&Context, &CRU.getContext());
  49   EXPECT_TRUE(CRU.hasReplaceableUses());
  50   EXPECT_TRUE(CRU.getReplaceableUses());
  51 }
  52
  53 TEST(ContextAndReplaceableUsesTest, takeReplaceableUses) {
  54   LLVMContext Context;
  55   auto ReplaceableUses = make_unique<ReplaceableMetadataImpl>(Context);
  56   auto *Ptr = ReplaceableUses.get();
  57   ContextAndReplaceableUses CRU(std::move(ReplaceableUses));
  58   ReplaceableUses = CRU.takeReplaceableUses();
  59   EXPECT_EQ(&Context, &CRU.getContext());
  60   EXPECT_FALSE(CRU.hasReplaceableUses());
  61   EXPECT_FALSE(CRU.getReplaceableUses());
  62   EXPECT_EQ(Ptr, ReplaceableUses.get());
  63 }
  64
  65 class MetadataTest : public testing::Test {
  66 public:
  67   MetadataTest() : M("test", Context), Counter(0) {}
  68
  69 protected:
  70   LLVMContext Context;
  71   Module M;
  72   int Counter;
  73
  74   MDNode *getNode() { return MDNode::get(Context, None); }
  75   MDNode *getNode(Metadata *MD) { return MDNode::get(Context, MD); }
  76   MDNode *getNode(Metadata *MD1, Metadata *MD2) {
  77     Metadata *MDs[] = {MD1, MD2};
  78     return MDNode::get(Context, MDs);
  79   }
  80
  81   MDTuple *getTuple() { return MDTuple::getDistinct(Context, None); }
  82   DISubroutineType *getSubroutineType() {
  83     return DISubroutineType::getDistinct(Context, 0, getNode(nullptr));
  84   }
  85   DISubprogram *getSubprogram() {
  86     return DISubprogram::getDistinct(Context, nullptr, "", "", nullptr, 0,
  87                                      nullptr, false, false, 0, nullptr, 0, 0, 0,
  88                                      0);
  89   }
  90   DIScopeRef getSubprogramRef() { return getSubprogram()->getRef(); }
  91   DIFile *getFile() {
  92     return DIFile::getDistinct(Context, "file.c", "/path/to/dir");
  93   }
  94   DITypeRef getBasicType(StringRef Name) {
  95     return DIBasicType::get(Context, dwarf::DW_TAG_unspecified_type, Name)
  96         ->getRef();
  97   }
  98   DITypeRef getDerivedType() {
  99     return DIDerivedType::getDistinct(Context, dwarf::DW_TAG_pointer_type, "",
 100                                       nullptr, 0, nullptr,
 101                                       getBasicType("basictype"), 1, 2, 0, 0)
 102         ->getRef();
 103   }
 104   Constant *getConstant() {
 105     return ConstantInt::get(Type::getInt32Ty(Context), Counter++);
 106   }
 107   ConstantAsMetadata *getConstantAsMetadata() {
 108     return ConstantAsMetadata::get(getConstant());
 109   }
 110   DITypeRef getCompositeType() {
 111     return DICompositeType::getDistinct(
 112                Context, dwarf::DW_TAG_structure_type, "", nullptr, 0, nullptr,
 113                nullptr, 32, 32, 0, 0, nullptr, 0, nullptr, nullptr, "")
 114         ->getRef();
 115   }
 116   Function *getFunction(StringRef Name) {
 117     return cast<Function>(M.getOrInsertFunction(
 118         Name, FunctionType::get(Type::getVoidTy(Context), None, false)));
 119   }
 120 };
 121 typedef MetadataTest MDStringTest;
 122
 123 // Test that construction of MDString with different value produces different
 124 // MDString objects, even with the same string pointer and nulls in the string.
 125 TEST_F(MDStringTest, CreateDifferent) {
 126   char x[3] = { 'f', 0, 'A' };
 127   MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
 128   x[2] = 'B';
 129   MDString *s2 = MDString::get(Context, StringRef(&x[0], 3));
 130   EXPECT_NE(s1, s2);
 131 }
 132
 133 // Test that creation of MDStrings with the same string contents produces the
 134 // same MDString object, even with different pointers.
 135 TEST_F(MDStringTest, CreateSame) {
 136   char x[4] = { 'a', 'b', 'c', 'X' };
 137   char y[4] = { 'a', 'b', 'c', 'Y' };
 138
 139   MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
 140   MDString *s2 = MDString::get(Context, StringRef(&y[0], 3));
 141   EXPECT_EQ(s1, s2);
 142 }
 143
 144 // Test that MDString prints out the string we fed it.
 145 TEST_F(MDStringTest, PrintingSimple) {
 146   char *str = new char[13];
 147   strncpy(str, "testing 1 2 3", 13);
 148   MDString *s = MDString::get(Context, StringRef(str, 13));
 149   strncpy(str, "aaaaaaaaaaaaa", 13);
 150   delete[] str;
 151
 152   std::string Str;
 153   raw_string_ostream oss(Str);
 154   s->print(oss);
 155   EXPECT_STREQ("!\"testing 1 2 3\"", oss.str().c_str());
 156 }
 157
 158 // Test printing of MDString with non-printable characters.
 159 TEST_F(MDStringTest, PrintingComplex) {
 160   char str[5] = {0, '\n', '"', '\\', (char)-1};
 161   MDString *s = MDString::get(Context, StringRef(str+0, 5));
 162   std::string Str;
 163   raw_string_ostream oss(Str);
 164   s->print(oss);
 165   EXPECT_STREQ("!\"\\00\\0A\\22\\5C\\FF\"", oss.str().c_str());
 166 }
 167
 168 typedef MetadataTest MDNodeTest;
 169
 170 // Test the two constructors, and containing other Constants.
 171 TEST_F(MDNodeTest, Simple) {
 172   char x[3] = { 'a', 'b', 'c' };
 173   char y[3] = { '1', '2', '3' };
 174
 175   MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
 176   MDString *s2 = MDString::get(Context, StringRef(&y[0], 3));
 177   ConstantAsMetadata *CI = ConstantAsMetadata::get(
 178       ConstantInt::get(getGlobalContext(), APInt(8, 0)));
 179
 180   std::vector<Metadata *> V;
 181   V.push_back(s1);
 182   V.push_back(CI);
 183   V.push_back(s2);
 184
 185   MDNode *n1 = MDNode::get(Context, V);
 186   Metadata *const c1 = n1;
 187   MDNode *n2 = MDNode::get(Context, c1);
 188   Metadata *const c2 = n2;
 189   MDNode *n3 = MDNode::get(Context, V);
 190   MDNode *n4 = MDNode::getIfExists(Context, V);
 191   MDNode *n5 = MDNode::getIfExists(Context, c1);
 192   MDNode *n6 = MDNode::getIfExists(Context, c2);
 193   EXPECT_NE(n1, n2);
 194   EXPECT_EQ(n1, n3);
 195   EXPECT_EQ(n4, n1);
 196   EXPECT_EQ(n5, n2);
 197   EXPECT_EQ(n6, (Metadata *)nullptr);
 198
 199   EXPECT_EQ(3u, n1->getNumOperands());
 200   EXPECT_EQ(s1, n1->getOperand(0));
 201   EXPECT_EQ(CI, n1->getOperand(1));
 202   EXPECT_EQ(s2, n1->getOperand(2));
 203
 204   EXPECT_EQ(1u, n2->getNumOperands());
 205   EXPECT_EQ(n1, n2->getOperand(0));
 206 }
 207
 208 TEST_F(MDNodeTest, Delete) {
 209   Constant *C = ConstantInt::get(Type::getInt32Ty(getGlobalContext()), 1);
 210   Instruction *I = new BitCastInst(C, Type::getInt32Ty(getGlobalContext()));
 211
 212   Metadata *const V = LocalAsMetadata::get(I);
 213   MDNode *n = MDNode::get(Context, V);
 214   TrackingMDRef wvh(n);
 215
 216   EXPECT_EQ(n, wvh);
 217
 218   delete I;
 219 }
 220
 221 TEST_F(MDNodeTest, SelfReference) {
 222   // !0 = !{!0}
 223   // !1 = !{!0}
 224   {
 225     auto Temp = MDNode::getTemporary(Context, None);
 226     Metadata *Args[] = {Temp.get()};
 227     MDNode *Self = MDNode::get(Context, Args);
 228     Self->replaceOperandWith(0, Self);
 229     ASSERT_EQ(Self, Self->getOperand(0));
 230
 231     // Self-references should be distinct, so MDNode::get() should grab a
 232     // uniqued node that references Self, not Self.
 233     Args[0] = Self;
 234     MDNode *Ref1 = MDNode::get(Context, Args);
 235     MDNode *Ref2 = MDNode::get(Context, Args);
 236     EXPECT_NE(Self, Ref1);
 237     EXPECT_EQ(Ref1, Ref2);
 238   }
 239
 240   // !0 = !{!0, !{}}
 241   // !1 = !{!0, !{}}
 242   {
 243     auto Temp = MDNode::getTemporary(Context, None);
 244     Metadata *Args[] = {Temp.get(), MDNode::get(Context, None)};
 245     MDNode *Self = MDNode::get(Context, Args);
 246     Self->replaceOperandWith(0, Self);
 247     ASSERT_EQ(Self, Self->getOperand(0));
 248
 249     // Self-references should be distinct, so MDNode::get() should grab a
 250     // uniqued node that references Self, not Self itself.
 251     Args[0] = Self;
 252     MDNode *Ref1 = MDNode::get(Context, Args);
 253     MDNode *Ref2 = MDNode::get(Context, Args);
 254     EXPECT_NE(Self, Ref1);
 255     EXPECT_EQ(Ref1, Ref2);
 256   }
 257 }
 258
 259 TEST_F(MDNodeTest, Print) {
 260   Constant *C = ConstantInt::get(Type::getInt32Ty(Context), 7);
 261   MDString *S = MDString::get(Context, "foo");
 262   MDNode *N0 = getNode();
 263   MDNode *N1 = getNode(N0);
 264   MDNode *N2 = getNode(N0, N1);
 265
 266   Metadata *Args[] = {ConstantAsMetadata::get(C), S, nullptr, N0, N1, N2};
 267   MDNode *N = MDNode::get(Context, Args);
 268
 269   std::string Expected;
 270   {
 271     raw_string_ostream OS(Expected);
 272     OS << "<" << (void *)N << "> = !{";
 273     C->printAsOperand(OS);
 274     OS << ", ";
 275     S->printAsOperand(OS);
 276     OS << ", null";
 277     MDNode *Nodes[] = {N0, N1, N2};
 278     for (auto *Node : Nodes)
 279       OS << ", <" << (void *)Node << ">";
 280     OS << "}";
 281   }
 282
 283   std::string Actual;
 284   {
 285     raw_string_ostream OS(Actual);
 286     N->print(OS);
 287   }
 288
 289   EXPECT_EQ(Expected, Actual);
 290 }
 291
 292 #define EXPECT_PRINTER_EQ(EXPECTED, PRINT)                                     \
 293   do {                                                                         \
 294     std::string Actual_;                                                       \
 295     raw_string_ostream OS(Actual_);                                            \
 296     PRINT;                                                                     \
 297     OS.flush();                                                                \
 298     std::string Expected_(EXPECTED);                                           \
 299     EXPECT_EQ(Expected_, Actual_);                                             \
 300   } while (false)
 301
 302 TEST_F(MDNodeTest, PrintTemporary) {
 303   MDNode *Arg = getNode();
 304   TempMDNode Temp = MDNode::getTemporary(Context, Arg);
 305   MDNode *N = getNode(Temp.get());
 306   Module M("test", Context);
 307   NamedMDNode *NMD = M.getOrInsertNamedMetadata("named");
 308   NMD->addOperand(N);
 309
 310   EXPECT_PRINTER_EQ("!0 = !{!1}", N->print(OS, &M));
 311   EXPECT_PRINTER_EQ("!1 = <temporary!> !{!2}", Temp->print(OS, &M));
 312   EXPECT_PRINTER_EQ("!2 = !{}", Arg->print(OS, &M));
 313
 314   // Cleanup.
 315   Temp->replaceAllUsesWith(Arg);
 316 }
 317
 318 TEST_F(MDNodeTest, PrintFromModule) {
 319   Constant *C = ConstantInt::get(Type::getInt32Ty(Context), 7);
 320   MDString *S = MDString::get(Context, "foo");
 321   MDNode *N0 = getNode();
 322   MDNode *N1 = getNode(N0);
 323   MDNode *N2 = getNode(N0, N1);
 324
 325   Metadata *Args[] = {ConstantAsMetadata::get(C), S, nullptr, N0, N1, N2};
 326   MDNode *N = MDNode::get(Context, Args);
 327   Module M("test", Context);
 328   NamedMDNode *NMD = M.getOrInsertNamedMetadata("named");
 329   NMD->addOperand(N);
 330
 331   std::string Expected;
 332   {
 333     raw_string_ostream OS(Expected);
 334     OS << "!0 = !{";
 335     C->printAsOperand(OS);
 336     OS << ", ";
 337     S->printAsOperand(OS);
 338     OS << ", null, !1, !2, !3}";
 339   }
 340
 341   EXPECT_PRINTER_EQ(Expected, N->print(OS, &M));
 342 }
 343
 344 TEST_F(MDNodeTest, PrintFromFunction) {
 345   Module M("test", Context);
 346   auto *FTy = FunctionType::get(Type::getVoidTy(Context), false);
 347   auto *F0 = Function::Create(FTy, GlobalValue::ExternalLinkage, "F0", &M);
 348   auto *F1 = Function::Create(FTy, GlobalValue::ExternalLinkage, "F1", &M);
 349   auto *BB0 = BasicBlock::Create(Context, "entry", F0);
 350   auto *BB1 = BasicBlock::Create(Context, "entry", F1);
 351   auto *R0 = ReturnInst::Create(Context, BB0);
 352   auto *R1 = ReturnInst::Create(Context, BB1);
 353   auto *N0 = MDNode::getDistinct(Context, None);
 354   auto *N1 = MDNode::getDistinct(Context, None);
 355   R0->setMetadata("md", N0);
 356   R1->setMetadata("md", N1);
 357
 358   EXPECT_PRINTER_EQ("!0 = distinct !{}", N0->print(OS, &M));
 359   EXPECT_PRINTER_EQ("!1 = distinct !{}", N1->print(OS, &M));
 360
 361   ModuleSlotTracker MST(&M);
 362   EXPECT_PRINTER_EQ("!0 = distinct !{}", N0->print(OS, MST));
 363   EXPECT_PRINTER_EQ("!1 = distinct !{}", N1->print(OS, MST));
 364 }
 365
 366 TEST_F(MDNodeTest, PrintFromMetadataAsValue) {
 367   Module M("test", Context);
 368
 369   auto *Intrinsic =
 370       Function::Create(FunctionType::get(Type::getVoidTy(Context),
 371                                          Type::getMetadataTy(Context), false),
 372                        GlobalValue::ExternalLinkage, "llvm.intrinsic", &M);
 373
 374   auto *FTy = FunctionType::get(Type::getVoidTy(Context), false);
 375   auto *F0 = Function::Create(FTy, GlobalValue::ExternalLinkage, "F0", &M);
 376   auto *F1 = Function::Create(FTy, GlobalValue::ExternalLinkage, "F1", &M);
 377   auto *BB0 = BasicBlock::Create(Context, "entry", F0);
 378   auto *BB1 = BasicBlock::Create(Context, "entry", F1);
 379   auto *N0 = MDNode::getDistinct(Context, None);
 380   auto *N1 = MDNode::getDistinct(Context, None);
 381   auto *MAV0 = MetadataAsValue::get(Context, N0);
 382   auto *MAV1 = MetadataAsValue::get(Context, N1);
 383   CallInst::Create(Intrinsic, MAV0, "", BB0);
 384   CallInst::Create(Intrinsic, MAV1, "", BB1);
 385
 386   EXPECT_PRINTER_EQ("!0 = distinct !{}", MAV0->print(OS));
 387   EXPECT_PRINTER_EQ("!1 = distinct !{}", MAV1->print(OS));
 388   EXPECT_PRINTER_EQ("!0", MAV0->printAsOperand(OS, false));
 389   EXPECT_PRINTER_EQ("!1", MAV1->printAsOperand(OS, false));
 390   EXPECT_PRINTER_EQ("metadata !0", MAV0->printAsOperand(OS, true));
 391   EXPECT_PRINTER_EQ("metadata !1", MAV1->printAsOperand(OS, true));
 392
 393   ModuleSlotTracker MST(&M);
 394   EXPECT_PRINTER_EQ("!0 = distinct !{}", MAV0->print(OS, MST));
 395   EXPECT_PRINTER_EQ("!1 = distinct !{}", MAV1->print(OS, MST));
 396   EXPECT_PRINTER_EQ("!0", MAV0->printAsOperand(OS, false, MST));
 397   EXPECT_PRINTER_EQ("!1", MAV1->printAsOperand(OS, false, MST));
 398   EXPECT_PRINTER_EQ("metadata !0", MAV0->printAsOperand(OS, true, MST));
 399   EXPECT_PRINTER_EQ("metadata !1", MAV1->printAsOperand(OS, true, MST));
 400 }
 401 #undef EXPECT_PRINTER_EQ
 402
 403 TEST_F(MDNodeTest, NullOperand) {
 404   // metadata !{}
 405   MDNode *Empty = MDNode::get(Context, None);
 406
 407   // metadata !{metadata !{}}
 408   Metadata *Ops[] = {Empty};
 409   MDNode *N = MDNode::get(Context, Ops);
 410   ASSERT_EQ(Empty, N->getOperand(0));
 411
 412   // metadata !{metadata !{}} => metadata !{null}
 413   N->replaceOperandWith(0, nullptr);
 414   ASSERT_EQ(nullptr, N->getOperand(0));
 415
 416   // metadata !{null}
 417   Ops[0] = nullptr;
 418   MDNode *NullOp = MDNode::get(Context, Ops);
 419   ASSERT_EQ(nullptr, NullOp->getOperand(0));
 420   EXPECT_EQ(N, NullOp);
 421 }
 422
 423 TEST_F(MDNodeTest, DistinctOnUniquingCollision) {
 424   // !{}
 425   MDNode *Empty = MDNode::get(Context, None);
 426   ASSERT_TRUE(Empty->isResolved());
 427   EXPECT_FALSE(Empty->isDistinct());
 428
 429   // !{!{}}
 430   Metadata *Wrapped1Ops[] = {Empty};
 431   MDNode *Wrapped1 = MDNode::get(Context, Wrapped1Ops);
 432   ASSERT_EQ(Empty, Wrapped1->getOperand(0));
 433   ASSERT_TRUE(Wrapped1->isResolved());
 434   EXPECT_FALSE(Wrapped1->isDistinct());
 435
 436   // !{!{!{}}}
 437   Metadata *Wrapped2Ops[] = {Wrapped1};
 438   MDNode *Wrapped2 = MDNode::get(Context, Wrapped2Ops);
 439   ASSERT_EQ(Wrapped1, Wrapped2->getOperand(0));
 440   ASSERT_TRUE(Wrapped2->isResolved());
 441   EXPECT_FALSE(Wrapped2->isDistinct());
 442
 443   // !{!{!{}}} => !{!{}}
 444   Wrapped2->replaceOperandWith(0, Empty);
 445   ASSERT_EQ(Empty, Wrapped2->getOperand(0));
 446   EXPECT_TRUE(Wrapped2->isDistinct());
 447   EXPECT_FALSE(Wrapped1->isDistinct());
 448 }
 449
 450 TEST_F(MDNodeTest, getDistinct) {
 451   // !{}
 452   MDNode *Empty = MDNode::get(Context, None);
 453   ASSERT_TRUE(Empty->isResolved());
 454   ASSERT_FALSE(Empty->isDistinct());
 455   ASSERT_EQ(Empty, MDNode::get(Context, None));
 456
 457   // distinct !{}
 458   MDNode *Distinct1 = MDNode::getDistinct(Context, None);
 459   MDNode *Distinct2 = MDNode::getDistinct(Context, None);
 460   EXPECT_TRUE(Distinct1->isResolved());
 461   EXPECT_TRUE(Distinct2->isDistinct());
 462   EXPECT_NE(Empty, Distinct1);
 463   EXPECT_NE(Empty, Distinct2);
 464   EXPECT_NE(Distinct1, Distinct2);
 465
 466   // !{}
 467   ASSERT_EQ(Empty, MDNode::get(Context, None));
 468 }
 469
 470 TEST_F(MDNodeTest, isUniqued) {
 471   MDNode *U = MDTuple::get(Context, None);
 472   MDNode *D = MDTuple::getDistinct(Context, None);
 473   auto T = MDTuple::getTemporary(Context, None);
 474   EXPECT_TRUE(U->isUniqued());
 475   EXPECT_FALSE(D->isUniqued());
 476   EXPECT_FALSE(T->isUniqued());
 477 }
 478
 479 TEST_F(MDNodeTest, isDistinct) {
 480   MDNode *U = MDTuple::get(Context, None);
 481   MDNode *D = MDTuple::getDistinct(Context, None);
 482   auto T = MDTuple::getTemporary(Context, None);
 483   EXPECT_FALSE(U->isDistinct());
 484   EXPECT_TRUE(D->isDistinct());
 485   EXPECT_FALSE(T->isDistinct());
 486 }
 487
 488 TEST_F(MDNodeTest, isTemporary) {
 489   MDNode *U = MDTuple::get(Context, None);
 490   MDNode *D = MDTuple::getDistinct(Context, None);
 491   auto T = MDTuple::getTemporary(Context, None);
 492   EXPECT_FALSE(U->isTemporary());
 493   EXPECT_FALSE(D->isTemporary());
 494   EXPECT_TRUE(T->isTemporary());
 495 }
 496
 497 TEST_F(MDNodeTest, getDistinctWithUnresolvedOperands) {
 498   // temporary !{}
 499   auto Temp = MDTuple::getTemporary(Context, None);
 500   ASSERT_FALSE(Temp->isResolved());
 501
 502   // distinct !{temporary !{}}
 503   Metadata *Ops[] = {Temp.get()};
 504   MDNode *Distinct = MDNode::getDistinct(Context, Ops);
 505   EXPECT_TRUE(Distinct->isResolved());
 506   EXPECT_EQ(Temp.get(), Distinct->getOperand(0));
 507
 508   // temporary !{} => !{}
 509   MDNode *Empty = MDNode::get(Context, None);
 510   Temp->replaceAllUsesWith(Empty);
 511   EXPECT_EQ(Empty, Distinct->getOperand(0));
 512 }
 513
 514 TEST_F(MDNodeTest, handleChangedOperandRecursion) {
 515   // !0 = !{}
 516   MDNode *N0 = MDNode::get(Context, None);
 517
 518   // !1 = !{!3, null}
 519   auto Temp3 = MDTuple::getTemporary(Context, None);
 520   Metadata *Ops1[] = {Temp3.get(), nullptr};
 521   MDNode *N1 = MDNode::get(Context, Ops1);
 522
 523   // !2 = !{!3, !0}
 524   Metadata *Ops2[] = {Temp3.get(), N0};
 525   MDNode *N2 = MDNode::get(Context, Ops2);
 526
 527   // !3 = !{!2}
 528   Metadata *Ops3[] = {N2};
 529   MDNode *N3 = MDNode::get(Context, Ops3);
 530   Temp3->replaceAllUsesWith(N3);
 531
 532   // !4 = !{!1}
 533   Metadata *Ops4[] = {N1};
 534   MDNode *N4 = MDNode::get(Context, Ops4);
 535
 536   // Confirm that the cycle prevented RAUW from getting dropped.
 537   EXPECT_TRUE(N0->isResolved());
 538   EXPECT_FALSE(N1->isResolved());
 539   EXPECT_FALSE(N2->isResolved());
 540   EXPECT_FALSE(N3->isResolved());
 541   EXPECT_FALSE(N4->isResolved());
 542
 543   // Create a couple of distinct nodes to observe what's going on.
 544   //
 545   // !5 = distinct !{!2}
 546   // !6 = distinct !{!3}
 547   Metadata *Ops5[] = {N2};
 548   MDNode *N5 = MDNode::getDistinct(Context, Ops5);
 549   Metadata *Ops6[] = {N3};
 550   MDNode *N6 = MDNode::getDistinct(Context, Ops6);
 551
 552   // Mutate !2 to look like !1, causing a uniquing collision (and an RAUW).
 553   // This will ripple up, with !3 colliding with !4, and RAUWing.  Since !2
 554   // references !3, this can cause a re-entry of handleChangedOperand() when !3
 555   // is not ready for it.
 556   //
 557   // !2->replaceOperandWith(1, nullptr)
 558   // !2: !{!3, !0} => !{!3, null}
 559   // !2->replaceAllUsesWith(!1)
 560   // !3: !{!2] => !{!1}
 561   // !3->replaceAllUsesWith(!4)
 562   N2->replaceOperandWith(1, nullptr);
 563
 564   // If all has gone well, N2 and N3 will have been RAUW'ed and deleted from
 565   // under us.  Just check that the other nodes are sane.
 566   //
 567   // !1 = !{!4, null}
 568   // !4 = !{!1}
 569   // !5 = distinct !{!1}
 570   // !6 = distinct !{!4}
 571   EXPECT_EQ(N4, N1->getOperand(0));
 572   EXPECT_EQ(N1, N4->getOperand(0));
 573   EXPECT_EQ(N1, N5->getOperand(0));
 574   EXPECT_EQ(N4, N6->getOperand(0));
 575 }
 576
 577 TEST_F(MDNodeTest, replaceResolvedOperand) {
 578   // Check code for replacing one resolved operand with another.  If doing this
 579   // directly (via replaceOperandWith()) becomes illegal, change the operand to
 580   // a global value that gets RAUW'ed.
 581   //
 582   // Use a temporary node to keep N from being resolved.
 583   auto Temp = MDTuple::getTemporary(Context, None);
 584   Metadata *Ops[] = {nullptr, Temp.get()};
 585
 586   MDNode *Empty = MDTuple::get(Context, ArrayRef<Metadata *>());
 587   MDNode *N = MDTuple::get(Context, Ops);
 588   EXPECT_EQ(nullptr, N->getOperand(0));
 589   ASSERT_FALSE(N->isResolved());
 590
 591   // Check code for replacing resolved nodes.
 592   N->replaceOperandWith(0, Empty);
 593   EXPECT_EQ(Empty, N->getOperand(0));
 594
 595   // Check code for adding another unresolved operand.
 596   N->replaceOperandWith(0, Temp.get());
 597   EXPECT_EQ(Temp.get(), N->getOperand(0));
 598
 599   // Remove the references to Temp; required for teardown.
 600   Temp->replaceAllUsesWith(nullptr);
 601 }
 602
 603 TEST_F(MDNodeTest, replaceWithUniqued) {
 604   auto *Empty = MDTuple::get(Context, None);
 605   MDTuple *FirstUniqued;
 606   {
 607     Metadata *Ops[] = {Empty};
 608     auto Temp = MDTuple::getTemporary(Context, Ops);
 609     EXPECT_TRUE(Temp->isTemporary());
 610
 611     // Don't expect a collision.
 612     auto *Current = Temp.get();
 613     FirstUniqued = MDNode::replaceWithUniqued(std::move(Temp));
 614     EXPECT_TRUE(FirstUniqued->isUniqued());
 615     EXPECT_TRUE(FirstUniqued->isResolved());
 616     EXPECT_EQ(Current, FirstUniqued);
 617   }
 618   {
 619     Metadata *Ops[] = {Empty};
 620     auto Temp = MDTuple::getTemporary(Context, Ops);
 621     EXPECT_TRUE(Temp->isTemporary());
 622
 623     // Should collide with Uniqued above this time.
 624     auto *Uniqued = MDNode::replaceWithUniqued(std::move(Temp));
 625     EXPECT_TRUE(Uniqued->isUniqued());
 626     EXPECT_TRUE(Uniqued->isResolved());
 627     EXPECT_EQ(FirstUniqued, Uniqued);
 628   }
 629   {
 630     auto Unresolved = MDTuple::getTemporary(Context, None);
 631     Metadata *Ops[] = {Unresolved.get()};
 632     auto Temp = MDTuple::getTemporary(Context, Ops);
 633     EXPECT_TRUE(Temp->isTemporary());
 634
 635     // Shouldn't be resolved.
 636     auto *Uniqued = MDNode::replaceWithUniqued(std::move(Temp));
 637     EXPECT_TRUE(Uniqued->isUniqued());
 638     EXPECT_FALSE(Uniqued->isResolved());
 639
 640     // Should be a different node.
 641     EXPECT_NE(FirstUniqued, Uniqued);
 642
 643     // Should resolve when we update its node (note: be careful to avoid a
 644     // collision with any other nodes above).
 645     Uniqued->replaceOperandWith(0, nullptr);
 646     EXPECT_TRUE(Uniqued->isResolved());
 647   }
 648 }
 649
 650 TEST_F(MDNodeTest, replaceWithUniquedResolvingOperand) {
 651   // temp !{}
 652   MDTuple *Op = MDTuple::getTemporary(Context, None).release();
 653   EXPECT_FALSE(Op->isResolved());
 654
 655   // temp !{temp !{}}
 656   Metadata *Ops[] = {Op};
 657   MDTuple *N = MDTuple::getTemporary(Context, Ops).release();
 658   EXPECT_FALSE(N->isResolved());
 659
 660   // temp !{temp !{}} => !{temp !{}}
 661   ASSERT_EQ(N, MDNode::replaceWithUniqued(TempMDTuple(N)));
 662   EXPECT_FALSE(N->isResolved());
 663
 664   // !{temp !{}} => !{!{}}
 665   ASSERT_EQ(Op, MDNode::replaceWithUniqued(TempMDTuple(Op)));
 666   EXPECT_TRUE(Op->isResolved());
 667   EXPECT_TRUE(N->isResolved());
 668 }
 669
 670 TEST_F(MDNodeTest, replaceWithUniquedChangingOperand) {
 671   // i1* @GV
 672   Type *Ty = Type::getInt1PtrTy(Context);
 673   std::unique_ptr<GlobalVariable> GV(
 674       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
 675   ConstantAsMetadata *Op = ConstantAsMetadata::get(GV.get());
 676
 677   // temp !{i1* @GV}
 678   Metadata *Ops[] = {Op};
 679   MDTuple *N = MDTuple::getTemporary(Context, Ops).release();
 680
 681   // temp !{i1* @GV} => !{i1* @GV}
 682   ASSERT_EQ(N, MDNode::replaceWithUniqued(TempMDTuple(N)));
 683   ASSERT_TRUE(N->isUniqued());
 684
 685   // !{i1* @GV} => !{null}
 686   GV.reset();
 687   ASSERT_TRUE(N->isUniqued());
 688   Metadata *NullOps[] = {nullptr};
 689   ASSERT_EQ(N, MDTuple::get(Context, NullOps));
 690 }
 691
 692 TEST_F(MDNodeTest, replaceWithDistinct) {
 693   {
 694     auto *Empty = MDTuple::get(Context, None);
 695     Metadata *Ops[] = {Empty};
 696     auto Temp = MDTuple::getTemporary(Context, Ops);
 697     EXPECT_TRUE(Temp->isTemporary());
 698
 699     // Don't expect a collision.
 700     auto *Current = Temp.get();
 701     auto *Distinct = MDNode::replaceWithDistinct(std::move(Temp));
 702     EXPECT_TRUE(Distinct->isDistinct());
 703     EXPECT_TRUE(Distinct->isResolved());
 704     EXPECT_EQ(Current, Distinct);
 705   }
 706   {
 707     auto Unresolved = MDTuple::getTemporary(Context, None);
 708     Metadata *Ops[] = {Unresolved.get()};
 709     auto Temp = MDTuple::getTemporary(Context, Ops);
 710     EXPECT_TRUE(Temp->isTemporary());
 711
 712     // Don't expect a collision.
 713     auto *Current = Temp.get();
 714     auto *Distinct = MDNode::replaceWithDistinct(std::move(Temp));
 715     EXPECT_TRUE(Distinct->isDistinct());
 716     EXPECT_TRUE(Distinct->isResolved());
 717     EXPECT_EQ(Current, Distinct);
 718
 719     // Cleanup; required for teardown.
 720     Unresolved->replaceAllUsesWith(nullptr);
 721   }
 722 }
 723
 724 TEST_F(MDNodeTest, replaceWithPermanent) {
 725   Metadata *Ops[] = {nullptr};
 726   auto Temp = MDTuple::getTemporary(Context, Ops);
 727   auto *T = Temp.get();
 728
 729   // U is a normal, uniqued node that references T.
 730   auto *U = MDTuple::get(Context, T);
 731   EXPECT_TRUE(U->isUniqued());
 732
 733   // Make Temp self-referencing.
 734   Temp->replaceOperandWith(0, T);
 735
 736   // Try to uniquify Temp.  This should, despite the name in the API, give a
 737   // 'distinct' node, since self-references aren't allowed to be uniqued.
 738   //
 739   // Since it's distinct, N should have the same address as when it was a
 740   // temporary (i.e., be equal to T not U).
 741   auto *N = MDNode::replaceWithPermanent(std::move(Temp));
 742   EXPECT_EQ(N, T);
 743   EXPECT_TRUE(N->isDistinct());
 744
 745   // U should be the canonical unique node with N as the argument.
 746   EXPECT_EQ(U, MDTuple::get(Context, N));
 747   EXPECT_TRUE(U->isUniqued());
 748
 749   // This temporary should collide with U when replaced, but it should still be
 750   // uniqued.
 751   EXPECT_EQ(U, MDNode::replaceWithPermanent(MDTuple::getTemporary(Context, N)));
 752   EXPECT_TRUE(U->isUniqued());
 753
 754   // This temporary should become a new uniqued node.
 755   auto Temp2 = MDTuple::getTemporary(Context, U);
 756   auto *V = Temp2.get();
 757   EXPECT_EQ(V, MDNode::replaceWithPermanent(std::move(Temp2)));
 758   EXPECT_TRUE(V->isUniqued());
 759   EXPECT_EQ(U, V->getOperand(0));
 760 }
 761
 762 TEST_F(MDNodeTest, deleteTemporaryWithTrackingRef) {
 763   TrackingMDRef Ref;
 764   EXPECT_EQ(nullptr, Ref.get());
 765   {
 766     auto Temp = MDTuple::getTemporary(Context, None);
 767     Ref.reset(Temp.get());
 768     EXPECT_EQ(Temp.get(), Ref.get());
 769   }
 770   EXPECT_EQ(nullptr, Ref.get());
 771 }
 772
 773 typedef MetadataTest DILocationTest;
 774
 775 TEST_F(DILocationTest, Overflow) {
 776   DISubprogram *N = getSubprogram();
 777   {
 778     DILocation *L = DILocation::get(Context, 2, 7, N);
 779     EXPECT_EQ(2u, L->getLine());
 780     EXPECT_EQ(7u, L->getColumn());
 781   }
 782   unsigned U16 = 1u << 16;
 783   {
 784     DILocation *L = DILocation::get(Context, UINT32_MAX, U16 - 1, N);
 785     EXPECT_EQ(UINT32_MAX, L->getLine());
 786     EXPECT_EQ(U16 - 1, L->getColumn());
 787   }
 788   {
 789     DILocation *L = DILocation::get(Context, UINT32_MAX, U16, N);
 790     EXPECT_EQ(UINT32_MAX, L->getLine());
 791     EXPECT_EQ(0u, L->getColumn());
 792   }
 793   {
 794     DILocation *L = DILocation::get(Context, UINT32_MAX, U16 + 1, N);
 795     EXPECT_EQ(UINT32_MAX, L->getLine());
 796     EXPECT_EQ(0u, L->getColumn());
 797   }
 798 }
 799
 800 TEST_F(DILocationTest, getDistinct) {
 801   MDNode *N = getSubprogram();
 802   DILocation *L0 = DILocation::getDistinct(Context, 2, 7, N);
 803   EXPECT_TRUE(L0->isDistinct());
 804   DILocation *L1 = DILocation::get(Context, 2, 7, N);
 805   EXPECT_FALSE(L1->isDistinct());
 806   EXPECT_EQ(L1, DILocation::get(Context, 2, 7, N));
 807 }
 808
 809 TEST_F(DILocationTest, getTemporary) {
 810   MDNode *N = MDNode::get(Context, None);
 811   auto L = DILocation::getTemporary(Context, 2, 7, N);
 812   EXPECT_TRUE(L->isTemporary());
 813   EXPECT_FALSE(L->isResolved());
 814 }
 815
 816 typedef MetadataTest GenericDINodeTest;
 817
 818 TEST_F(GenericDINodeTest, get) {
 819   StringRef Header = "header";
 820   auto *Empty = MDNode::get(Context, None);
 821   Metadata *Ops1[] = {Empty};
 822   auto *N = GenericDINode::get(Context, 15, Header, Ops1);
 823   EXPECT_EQ(15u, N->getTag());
 824   EXPECT_EQ(2u, N->getNumOperands());
 825   EXPECT_EQ(Header, N->getHeader());
 826   EXPECT_EQ(MDString::get(Context, Header), N->getOperand(0));
 827   EXPECT_EQ(1u, N->getNumDwarfOperands());
 828   EXPECT_EQ(Empty, N->getDwarfOperand(0));
 829   EXPECT_EQ(Empty, N->getOperand(1));
 830   ASSERT_TRUE(N->isUniqued());
 831
 832   EXPECT_EQ(N, GenericDINode::get(Context, 15, Header, Ops1));
 833
 834   N->replaceOperandWith(1, nullptr);
 835   EXPECT_EQ(15u, N->getTag());
 836   EXPECT_EQ(Header, N->getHeader());
 837   EXPECT_EQ(nullptr, N->getDwarfOperand(0));
 838   ASSERT_TRUE(N->isUniqued());
 839
 840   Metadata *Ops2[] = {nullptr};
 841   EXPECT_EQ(N, GenericDINode::get(Context, 15, Header, Ops2));
 842
 843   N->replaceDwarfOperandWith(0, Empty);
 844   EXPECT_EQ(15u, N->getTag());
 845   EXPECT_EQ(Header, N->getHeader());
 846   EXPECT_EQ(Empty, N->getDwarfOperand(0));
 847   ASSERT_TRUE(N->isUniqued());
 848   EXPECT_EQ(N, GenericDINode::get(Context, 15, Header, Ops1));
 849
 850   TempGenericDINode Temp = N->clone();
 851   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 852 }
 853
 854 TEST_F(GenericDINodeTest, getEmptyHeader) {
 855   // Canonicalize !"" to null.
 856   auto *N = GenericDINode::get(Context, 15, StringRef(), None);
 857   EXPECT_EQ(StringRef(), N->getHeader());
 858   EXPECT_EQ(nullptr, N->getOperand(0));
 859 }
 860
 861 typedef MetadataTest DISubrangeTest;
 862
 863 TEST_F(DISubrangeTest, get) {
 864   auto *N = DISubrange::get(Context, 5, 7);
 865   EXPECT_EQ(dwarf::DW_TAG_subrange_type, N->getTag());
 866   EXPECT_EQ(5, N->getCount());
 867   EXPECT_EQ(7, N->getLowerBound());
 868   EXPECT_EQ(N, DISubrange::get(Context, 5, 7));
 869   EXPECT_EQ(DISubrange::get(Context, 5, 0), DISubrange::get(Context, 5));
 870
 871   TempDISubrange Temp = N->clone();
 872   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 873 }
 874
 875 TEST_F(DISubrangeTest, getEmptyArray) {
 876   auto *N = DISubrange::get(Context, -1, 0);
 877   EXPECT_EQ(dwarf::DW_TAG_subrange_type, N->getTag());
 878   EXPECT_EQ(-1, N->getCount());
 879   EXPECT_EQ(0, N->getLowerBound());
 880   EXPECT_EQ(N, DISubrange::get(Context, -1, 0));
 881 }
 882
 883 typedef MetadataTest DIEnumeratorTest;
 884
 885 TEST_F(DIEnumeratorTest, get) {
 886   auto *N = DIEnumerator::get(Context, 7, "name");
 887   EXPECT_EQ(dwarf::DW_TAG_enumerator, N->getTag());
 888   EXPECT_EQ(7, N->getValue());
 889   EXPECT_EQ("name", N->getName());
 890   EXPECT_EQ(N, DIEnumerator::get(Context, 7, "name"));
 891
 892   EXPECT_NE(N, DIEnumerator::get(Context, 8, "name"));
 893   EXPECT_NE(N, DIEnumerator::get(Context, 7, "nam"));
 894
 895   TempDIEnumerator Temp = N->clone();
 896   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 897 }
 898
 899 typedef MetadataTest DIBasicTypeTest;
 900
 901 TEST_F(DIBasicTypeTest, get) {
 902   auto *N =
 903       DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special", 33, 26, 7);
 904   EXPECT_EQ(dwarf::DW_TAG_base_type, N->getTag());
 905   EXPECT_EQ("special", N->getName());
 906   EXPECT_EQ(33u, N->getSizeInBits());
 907   EXPECT_EQ(26u, N->getAlignInBits());
 908   EXPECT_EQ(7u, N->getEncoding());
 909   EXPECT_EQ(0u, N->getLine());
 910   EXPECT_EQ(N, DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special", 33,
 911                                 26, 7));
 912
 913   EXPECT_NE(N, DIBasicType::get(Context, dwarf::DW_TAG_unspecified_type,
 914                                 "special", 33, 26, 7));
 915   EXPECT_NE(N,
 916             DIBasicType::get(Context, dwarf::DW_TAG_base_type, "s", 33, 26, 7));
 917   EXPECT_NE(N, DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special", 32,
 918                                 26, 7));
 919   EXPECT_NE(N, DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special", 33,
 920                                 25, 7));
 921   EXPECT_NE(N, DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special", 33,
 922                                 26, 6));
 923
 924   TempDIBasicType Temp = N->clone();
 925   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 926 }
 927
 928 TEST_F(DIBasicTypeTest, getWithLargeValues) {
 929   auto *N = DIBasicType::get(Context, dwarf::DW_TAG_base_type, "special",
 930                              UINT64_MAX, UINT64_MAX - 1, 7);
 931   EXPECT_EQ(UINT64_MAX, N->getSizeInBits());
 932   EXPECT_EQ(UINT64_MAX - 1, N->getAlignInBits());
 933 }
 934
 935 TEST_F(DIBasicTypeTest, getUnspecified) {
 936   auto *N =
 937       DIBasicType::get(Context, dwarf::DW_TAG_unspecified_type, "unspecified");
 938   EXPECT_EQ(dwarf::DW_TAG_unspecified_type, N->getTag());
 939   EXPECT_EQ("unspecified", N->getName());
 940   EXPECT_EQ(0u, N->getSizeInBits());
 941   EXPECT_EQ(0u, N->getAlignInBits());
 942   EXPECT_EQ(0u, N->getEncoding());
 943   EXPECT_EQ(0u, N->getLine());
 944 }
 945
 946 typedef MetadataTest DITypeTest;
 947
 948 TEST_F(DITypeTest, clone) {
 949   // Check that DIType has a specialized clone that returns TempDIType.
 950   DIType *N = DIBasicType::get(Context, dwarf::DW_TAG_base_type, "int", 32, 32,
 951                                dwarf::DW_ATE_signed);
 952
 953   TempDIType Temp = N->clone();
 954   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 955 }
 956
 957 TEST_F(DITypeTest, setFlags) {
 958   // void (void)
 959   Metadata *TypesOps[] = {nullptr};
 960   Metadata *Types = MDTuple::get(Context, TypesOps);
 961
 962   DIType *D = DISubroutineType::getDistinct(Context, 0u, Types);
 963   EXPECT_EQ(0u, D->getFlags());
 964   D->setFlags(DINode::FlagRValueReference);
 965   EXPECT_EQ(DINode::FlagRValueReference, D->getFlags());
 966   D->setFlags(0u);
 967   EXPECT_EQ(0u, D->getFlags());
 968
 969   TempDIType T = DISubroutineType::getTemporary(Context, 0u, Types);
 970   EXPECT_EQ(0u, T->getFlags());
 971   T->setFlags(DINode::FlagRValueReference);
 972   EXPECT_EQ(DINode::FlagRValueReference, T->getFlags());
 973   T->setFlags(0u);
 974   EXPECT_EQ(0u, T->getFlags());
 975 }
 976
 977 typedef MetadataTest DIDerivedTypeTest;
 978
 979 TEST_F(DIDerivedTypeTest, get) {
 980   DIFile *File = getFile();
 981   DIScopeRef Scope = getSubprogramRef();
 982   DITypeRef BaseType = getBasicType("basic");
 983   MDTuple *ExtraData = getTuple();
 984
 985   auto *N = DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type, "something",
 986                                File, 1, Scope, BaseType, 2, 3, 4, 5, ExtraData);
 987   EXPECT_EQ(dwarf::DW_TAG_pointer_type, N->getTag());
 988   EXPECT_EQ("something", N->getName());
 989   EXPECT_EQ(File, N->getFile());
 990   EXPECT_EQ(1u, N->getLine());
 991   EXPECT_EQ(Scope, N->getScope());
 992   EXPECT_EQ(BaseType, N->getBaseType());
 993   EXPECT_EQ(2u, N->getSizeInBits());
 994   EXPECT_EQ(3u, N->getAlignInBits());
 995   EXPECT_EQ(4u, N->getOffsetInBits());
 996   EXPECT_EQ(5u, N->getFlags());
 997   EXPECT_EQ(ExtraData, N->getExtraData());
 998   EXPECT_EQ(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
 999                                   "something", File, 1, Scope, BaseType, 2, 3,
1000                                   4, 5, ExtraData));
1001
1002   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_reference_type,
1003                                   "something", File, 1, Scope, BaseType, 2, 3,
1004                                   4, 5, ExtraData));
1005   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type, "else",
1006                                   File, 1, Scope, BaseType, 2, 3, 4, 5,
1007                                   ExtraData));
1008   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1009                                   "something", getFile(), 1, Scope, BaseType, 2,
1010                                   3, 4, 5, ExtraData));
1011   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1012                                   "something", File, 2, Scope, BaseType, 2, 3,
1013                                   4, 5, ExtraData));
1014   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1015                                   "something", File, 1, getSubprogramRef(),
1016                                   BaseType, 2, 3, 4, 5, ExtraData));
1017   EXPECT_NE(N, DIDerivedType::get(
1018                    Context, dwarf::DW_TAG_pointer_type, "something", File, 1,
1019                    Scope, getBasicType("basic2"), 2, 3, 4, 5, ExtraData));
1020   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1021                                   "something", File, 1, Scope, BaseType, 3, 3,
1022                                   4, 5, ExtraData));
1023   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1024                                   "something", File, 1, Scope, BaseType, 2, 2,
1025                                   4, 5, ExtraData));
1026   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1027                                   "something", File, 1, Scope, BaseType, 2, 3,
1028                                   5, 5, ExtraData));
1029   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1030                                   "something", File, 1, Scope, BaseType, 2, 3,
1031                                   4, 4, ExtraData));
1032   EXPECT_NE(N, DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type,
1033                                   "something", File, 1, Scope, BaseType, 2, 3,
1034                                   4, 5, getTuple()));
1035
1036   TempDIDerivedType Temp = N->clone();
1037   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1038 }
1039
1040 TEST_F(DIDerivedTypeTest, getWithLargeValues) {
1041   DIFile *File = getFile();
1042   DIScopeRef Scope = getSubprogramRef();
1043   DITypeRef BaseType = getBasicType("basic");
1044   MDTuple *ExtraData = getTuple();
1045
1046   auto *N = DIDerivedType::get(Context, dwarf::DW_TAG_pointer_type, "something",
1047                                File, 1, Scope, BaseType, UINT64_MAX,
1048                                UINT64_MAX - 1, UINT64_MAX - 2, 5, ExtraData);
1049   EXPECT_EQ(UINT64_MAX, N->getSizeInBits());
1050   EXPECT_EQ(UINT64_MAX - 1, N->getAlignInBits());
1051   EXPECT_EQ(UINT64_MAX - 2, N->getOffsetInBits());
1052 }
1053
1054 typedef MetadataTest DICompositeTypeTest;
1055
1056 TEST_F(DICompositeTypeTest, get) {
1057   unsigned Tag = dwarf::DW_TAG_structure_type;
1058   StringRef Name = "some name";
1059   DIFile *File = getFile();
1060   unsigned Line = 1;
1061   DIScopeRef Scope = getSubprogramRef();
1062   DITypeRef BaseType = getCompositeType();
1063   uint64_t SizeInBits = 2;
1064   uint64_t AlignInBits = 3;
1065   uint64_t OffsetInBits = 4;
1066   unsigned Flags = 5;
1067   MDTuple *Elements = getTuple();
1068   unsigned RuntimeLang = 6;
1069   DITypeRef VTableHolder = getCompositeType();
1070   MDTuple *TemplateParams = getTuple();
1071   StringRef Identifier = "some id";
1072
1073   auto *N = DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1074                                  BaseType, SizeInBits, AlignInBits,
1075                                  OffsetInBits, Flags, Elements, RuntimeLang,
1076                                  VTableHolder, TemplateParams, Identifier);
1077   EXPECT_EQ(Tag, N->getTag());
1078   EXPECT_EQ(Name, N->getName());
1079   EXPECT_EQ(File, N->getFile());
1080   EXPECT_EQ(Line, N->getLine());
1081   EXPECT_EQ(Scope, N->getScope());
1082   EXPECT_EQ(BaseType, N->getBaseType());
1083   EXPECT_EQ(SizeInBits, N->getSizeInBits());
1084   EXPECT_EQ(AlignInBits, N->getAlignInBits());
1085   EXPECT_EQ(OffsetInBits, N->getOffsetInBits());
1086   EXPECT_EQ(Flags, N->getFlags());
1087   EXPECT_EQ(Elements, N->getElements().get());
1088   EXPECT_EQ(RuntimeLang, N->getRuntimeLang());
1089   EXPECT_EQ(VTableHolder, N->getVTableHolder());
1090   EXPECT_EQ(TemplateParams, N->getTemplateParams().get());
1091   EXPECT_EQ(Identifier, N->getIdentifier());
1092
1093   EXPECT_EQ(N, DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1094                                     BaseType, SizeInBits, AlignInBits,
1095                                     OffsetInBits, Flags, Elements, RuntimeLang,
1096                                     VTableHolder, TemplateParams, Identifier));
1097
1098   EXPECT_NE(N, DICompositeType::get(Context, Tag + 1, Name, File, Line, Scope,
1099                                     BaseType, SizeInBits, AlignInBits,
1100                                     OffsetInBits, Flags, Elements, RuntimeLang,
1101                                     VTableHolder, TemplateParams, Identifier));
1102   EXPECT_NE(N, DICompositeType::get(Context, Tag, "abc", File, Line, Scope,
1103                                     BaseType, SizeInBits, AlignInBits,
1104                                     OffsetInBits, Flags, Elements, RuntimeLang,
1105                                     VTableHolder, TemplateParams, Identifier));
1106   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, getFile(), Line, Scope,
1107                                     BaseType, SizeInBits, AlignInBits,
1108                                     OffsetInBits, Flags, Elements, RuntimeLang,
1109                                     VTableHolder, TemplateParams, Identifier));
1110   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, File, Line + 1, Scope,
1111                                     BaseType, SizeInBits, AlignInBits,
1112                                     OffsetInBits, Flags, Elements, RuntimeLang,
1113                                     VTableHolder, TemplateParams, Identifier));
1114   EXPECT_NE(N, DICompositeType::get(
1115                    Context, Tag, Name, File, Line, getSubprogramRef(), BaseType,
1116                    SizeInBits, AlignInBits, OffsetInBits, Flags, Elements,
1117                    RuntimeLang, VTableHolder, TemplateParams, Identifier));
1118   EXPECT_NE(N, DICompositeType::get(
1119                    Context, Tag, Name, File, Line, Scope, getBasicType("other"),
1120                    SizeInBits, AlignInBits, OffsetInBits, Flags, Elements,
1121                    RuntimeLang, VTableHolder, TemplateParams, Identifier));
1122   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1123                                     BaseType, SizeInBits + 1, AlignInBits,
1124                                     OffsetInBits, Flags, Elements, RuntimeLang,
1125                                     VTableHolder, TemplateParams, Identifier));
1126   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1127                                     BaseType, SizeInBits, AlignInBits + 1,
1128                                     OffsetInBits, Flags, Elements, RuntimeLang,
1129                                     VTableHolder, TemplateParams, Identifier));
1130   EXPECT_NE(N, DICompositeType::get(
1131                    Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
1132                    AlignInBits, OffsetInBits + 1, Flags, Elements, RuntimeLang,
1133                    VTableHolder, TemplateParams, Identifier));
1134   EXPECT_NE(N, DICompositeType::get(
1135                    Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
1136                    AlignInBits, OffsetInBits, Flags + 1, Elements, RuntimeLang,
1137                    VTableHolder, TemplateParams, Identifier));
1138   EXPECT_NE(N, DICompositeType::get(
1139                    Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
1140                    AlignInBits, OffsetInBits, Flags, getTuple(), RuntimeLang,
1141                    VTableHolder, TemplateParams, Identifier));
1142   EXPECT_NE(N, DICompositeType::get(
1143                    Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
1144                    AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang + 1,
1145                    VTableHolder, TemplateParams, Identifier));
1146   EXPECT_NE(N, DICompositeType::get(
1147                    Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
1148                    AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
1149                    getCompositeType(), TemplateParams, Identifier));
1150   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1151                                     BaseType, SizeInBits, AlignInBits,
1152                                     OffsetInBits, Flags, Elements, RuntimeLang,
1153                                     VTableHolder, getTuple(), Identifier));
1154   EXPECT_NE(N, DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1155                                     BaseType, SizeInBits, AlignInBits,
1156                                     OffsetInBits, Flags, Elements, RuntimeLang,
1157                                     VTableHolder, TemplateParams, "other"));
1158
1159   // Be sure that missing identifiers get null pointers.
1160   EXPECT_FALSE(DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1161                                     BaseType, SizeInBits, AlignInBits,
1162                                     OffsetInBits, Flags, Elements, RuntimeLang,
1163                                     VTableHolder, TemplateParams, "")
1164                    ->getRawIdentifier());
1165   EXPECT_FALSE(DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1166                                     BaseType, SizeInBits, AlignInBits,
1167                                     OffsetInBits, Flags, Elements, RuntimeLang,
1168                                     VTableHolder, TemplateParams)
1169                    ->getRawIdentifier());
1170
1171   TempDICompositeType Temp = N->clone();
1172   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1173 }
1174
1175 TEST_F(DICompositeTypeTest, getWithLargeValues) {
1176   unsigned Tag = dwarf::DW_TAG_structure_type;
1177   StringRef Name = "some name";
1178   DIFile *File = getFile();
1179   unsigned Line = 1;
1180   DIScopeRef Scope = getSubprogramRef();
1181   DITypeRef BaseType = getCompositeType();
1182   uint64_t SizeInBits = UINT64_MAX;
1183   uint64_t AlignInBits = UINT64_MAX - 1;
1184   uint64_t OffsetInBits = UINT64_MAX - 2;
1185   unsigned Flags = 5;
1186   MDTuple *Elements = getTuple();
1187   unsigned RuntimeLang = 6;
1188   DITypeRef VTableHolder = getCompositeType();
1189   MDTuple *TemplateParams = getTuple();
1190   StringRef Identifier = "some id";
1191
1192   auto *N = DICompositeType::get(Context, Tag, Name, File, Line, Scope,
1193                                  BaseType, SizeInBits, AlignInBits,
1194                                  OffsetInBits, Flags, Elements, RuntimeLang,
1195                                  VTableHolder, TemplateParams, Identifier);
1196   EXPECT_EQ(SizeInBits, N->getSizeInBits());
1197   EXPECT_EQ(AlignInBits, N->getAlignInBits());
1198   EXPECT_EQ(OffsetInBits, N->getOffsetInBits());
1199 }
1200
1201 TEST_F(DICompositeTypeTest, replaceOperands) {
1202   unsigned Tag = dwarf::DW_TAG_structure_type;
1203   StringRef Name = "some name";
1204   DIFile *File = getFile();
1205   unsigned Line = 1;
1206   DIScopeRef Scope = getSubprogramRef();
1207   DITypeRef BaseType = getCompositeType();
1208   uint64_t SizeInBits = 2;
1209   uint64_t AlignInBits = 3;
1210   uint64_t OffsetInBits = 4;
1211   unsigned Flags = 5;
1212   unsigned RuntimeLang = 6;
1213   StringRef Identifier = "some id";
1214
1215   auto *N = DICompositeType::get(
1216       Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits, AlignInBits,
1217       OffsetInBits, Flags, nullptr, RuntimeLang, nullptr, nullptr, Identifier);
1218
1219   auto *Elements = MDTuple::getDistinct(Context, None);
1220   EXPECT_EQ(nullptr, N->getElements().get());
1221   N->replaceElements(Elements);
1222   EXPECT_EQ(Elements, N->getElements().get());
1223   N->replaceElements(nullptr);
1224   EXPECT_EQ(nullptr, N->getElements().get());
1225
1226   DITypeRef VTableHolder = getCompositeType();
1227   EXPECT_EQ(nullptr, N->getVTableHolder());
1228   N->replaceVTableHolder(VTableHolder);
1229   EXPECT_EQ(VTableHolder, N->getVTableHolder());
1230   N->replaceVTableHolder(nullptr);
1231   EXPECT_EQ(nullptr, N->getVTableHolder());
1232
1233   auto *TemplateParams = MDTuple::getDistinct(Context, None);
1234   EXPECT_EQ(nullptr, N->getTemplateParams().get());
1235   N->replaceTemplateParams(TemplateParams);
1236   EXPECT_EQ(TemplateParams, N->getTemplateParams().get());
1237   N->replaceTemplateParams(nullptr);
1238   EXPECT_EQ(nullptr, N->getTemplateParams().get());
1239 }
1240
1241 typedef MetadataTest DISubroutineTypeTest;
1242
1243 TEST_F(DISubroutineTypeTest, get) {
1244   unsigned Flags = 1;
1245   MDTuple *TypeArray = getTuple();
1246
1247   auto *N = DISubroutineType::get(Context, Flags, TypeArray);
1248   EXPECT_EQ(dwarf::DW_TAG_subroutine_type, N->getTag());
1249   EXPECT_EQ(Flags, N->getFlags());
1250   EXPECT_EQ(TypeArray, N->getTypeArray().get());
1251   EXPECT_EQ(N, DISubroutineType::get(Context, Flags, TypeArray));
1252
1253   EXPECT_NE(N, DISubroutineType::get(Context, Flags + 1, TypeArray));
1254   EXPECT_NE(N, DISubroutineType::get(Context, Flags, getTuple()));
1255
1256   TempDISubroutineType Temp = N->clone();
1257   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1258
1259   // Test always-empty operands.
1260   EXPECT_EQ(nullptr, N->getScope());
1261   EXPECT_EQ(nullptr, N->getFile());
1262   EXPECT_EQ("", N->getName());
1263 }
1264
1265 typedef MetadataTest DIFileTest;
1266
1267 TEST_F(DIFileTest, get) {
1268   StringRef Filename = "file";
1269   StringRef Directory = "dir";
1270   auto *N = DIFile::get(Context, Filename, Directory);
1271
1272   EXPECT_EQ(dwarf::DW_TAG_file_type, N->getTag());
1273   EXPECT_EQ(Filename, N->getFilename());
1274   EXPECT_EQ(Directory, N->getDirectory());
1275   EXPECT_EQ(N, DIFile::get(Context, Filename, Directory));
1276
1277   EXPECT_NE(N, DIFile::get(Context, "other", Directory));
1278   EXPECT_NE(N, DIFile::get(Context, Filename, "other"));
1279
1280   TempDIFile Temp = N->clone();
1281   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1282 }
1283
1284 TEST_F(DIFileTest, ScopeGetFile) {
1285   // Ensure that DIScope::getFile() returns itself.
1286   DIScope *N = DIFile::get(Context, "file", "dir");
1287   EXPECT_EQ(N, N->getFile());
1288 }
1289
1290 typedef MetadataTest DICompileUnitTest;
1291
1292 TEST_F(DICompileUnitTest, get) {
1293   unsigned SourceLanguage = 1;
1294   DIFile *File = getFile();
1295   StringRef Producer = "some producer";
1296   bool IsOptimized = false;
1297   StringRef Flags = "flag after flag";
1298   unsigned RuntimeVersion = 2;
1299   StringRef SplitDebugFilename = "another/file";
1300   unsigned EmissionKind = 3;
1301   MDTuple *EnumTypes = getTuple();
1302   MDTuple *RetainedTypes = getTuple();
1303   MDTuple *Subprograms = getTuple();
1304   MDTuple *GlobalVariables = getTuple();
1305   MDTuple *ImportedEntities = getTuple();
1306   uint64_t DWOId = 0x10000000c0ffee;
1307   auto *N = DICompileUnit::getDistinct(
1308       Context, SourceLanguage, File, Producer, IsOptimized, Flags,
1309       RuntimeVersion, SplitDebugFilename, EmissionKind, EnumTypes,
1310       RetainedTypes, Subprograms, GlobalVariables, ImportedEntities, DWOId);
1311
1312   EXPECT_EQ(dwarf::DW_TAG_compile_unit, N->getTag());
1313   EXPECT_EQ(SourceLanguage, N->getSourceLanguage());
1314   EXPECT_EQ(File, N->getFile());
1315   EXPECT_EQ(Producer, N->getProducer());
1316   EXPECT_EQ(IsOptimized, N->isOptimized());
1317   EXPECT_EQ(Flags, N->getFlags());
1318   EXPECT_EQ(RuntimeVersion, N->getRuntimeVersion());
1319   EXPECT_EQ(SplitDebugFilename, N->getSplitDebugFilename());
1320   EXPECT_EQ(EmissionKind, N->getEmissionKind());
1321   EXPECT_EQ(EnumTypes, N->getEnumTypes().get());
1322   EXPECT_EQ(RetainedTypes, N->getRetainedTypes().get());
1323   EXPECT_EQ(Subprograms, N->getSubprograms().get());
1324   EXPECT_EQ(GlobalVariables, N->getGlobalVariables().get());
1325   EXPECT_EQ(ImportedEntities, N->getImportedEntities().get());
1326   EXPECT_EQ(DWOId, N->getDWOId());
1327
1328   TempDICompileUnit Temp = N->clone();
1329   EXPECT_EQ(dwarf::DW_TAG_compile_unit, Temp->getTag());
1330   EXPECT_EQ(SourceLanguage, Temp->getSourceLanguage());
1331   EXPECT_EQ(File, Temp->getFile());
1332   EXPECT_EQ(Producer, Temp->getProducer());
1333   EXPECT_EQ(IsOptimized, Temp->isOptimized());
1334   EXPECT_EQ(Flags, Temp->getFlags());
1335   EXPECT_EQ(RuntimeVersion, Temp->getRuntimeVersion());
1336   EXPECT_EQ(SplitDebugFilename, Temp->getSplitDebugFilename());
1337   EXPECT_EQ(EmissionKind, Temp->getEmissionKind());
1338   EXPECT_EQ(EnumTypes, Temp->getEnumTypes().get());
1339   EXPECT_EQ(RetainedTypes, Temp->getRetainedTypes().get());
1340   EXPECT_EQ(Subprograms, Temp->getSubprograms().get());
1341   EXPECT_EQ(GlobalVariables, Temp->getGlobalVariables().get());
1342   EXPECT_EQ(ImportedEntities, Temp->getImportedEntities().get());
1343   EXPECT_EQ(DWOId, Temp->getDWOId());
1344
1345   auto *TempAddress = Temp.get();
1346   auto *Clone = MDNode::replaceWithPermanent(std::move(Temp));
1347   EXPECT_TRUE(Clone->isDistinct());
1348   EXPECT_EQ(TempAddress, Clone);
1349 }
1350
1351 TEST_F(DICompileUnitTest, replaceArrays) {
1352   unsigned SourceLanguage = 1;
1353   DIFile *File = getFile();
1354   StringRef Producer = "some producer";
1355   bool IsOptimized = false;
1356   StringRef Flags = "flag after flag";
1357   unsigned RuntimeVersion = 2;
1358   StringRef SplitDebugFilename = "another/file";
1359   unsigned EmissionKind = 3;
1360   MDTuple *EnumTypes = MDTuple::getDistinct(Context, None);
1361   MDTuple *RetainedTypes = MDTuple::getDistinct(Context, None);
1362   MDTuple *ImportedEntities = MDTuple::getDistinct(Context, None);
1363   uint64_t DWOId = 0xc0ffee;
1364   auto *N = DICompileUnit::getDistinct(
1365       Context, SourceLanguage, File, Producer, IsOptimized, Flags,
1366       RuntimeVersion, SplitDebugFilename, EmissionKind, EnumTypes,
1367       RetainedTypes, nullptr, nullptr, ImportedEntities, DWOId);
1368
1369   auto *Subprograms = MDTuple::getDistinct(Context, None);
1370   EXPECT_EQ(nullptr, N->getSubprograms().get());
1371   N->replaceSubprograms(Subprograms);
1372   EXPECT_EQ(Subprograms, N->getSubprograms().get());
1373   N->replaceSubprograms(nullptr);
1374   EXPECT_EQ(nullptr, N->getSubprograms().get());
1375
1376   auto *GlobalVariables = MDTuple::getDistinct(Context, None);
1377   EXPECT_EQ(nullptr, N->getGlobalVariables().get());
1378   N->replaceGlobalVariables(GlobalVariables);
1379   EXPECT_EQ(GlobalVariables, N->getGlobalVariables().get());
1380   N->replaceGlobalVariables(nullptr);
1381   EXPECT_EQ(nullptr, N->getGlobalVariables().get());
1382 }
1383
1384 typedef MetadataTest DISubprogramTest;
1385
1386 TEST_F(DISubprogramTest, get) {
1387   DIScopeRef Scope = getCompositeType();
1388   StringRef Name = "name";
1389   StringRef LinkageName = "linkage";
1390   DIFile *File = getFile();
1391   unsigned Line = 2;
1392   DISubroutineType *Type = getSubroutineType();
1393   bool IsLocalToUnit = false;
1394   bool IsDefinition = true;
1395   unsigned ScopeLine = 3;
1396   DITypeRef ContainingType = getCompositeType();
1397   unsigned Virtuality = 4;
1398   unsigned VirtualIndex = 5;
1399   unsigned Flags = 6;
1400   bool IsOptimized = false;
1401   MDTuple *TemplateParams = getTuple();
1402   DISubprogram *Declaration = getSubprogram();
1403   MDTuple *Variables = getTuple();
1404
1405   auto *N = DISubprogram::get(
1406       Context, Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit,
1407       IsDefinition, ScopeLine, ContainingType, Virtuality, VirtualIndex, Flags,
1408       IsOptimized, TemplateParams, Declaration, Variables);
1409
1410   EXPECT_EQ(dwarf::DW_TAG_subprogram, N->getTag());
1411   EXPECT_EQ(Scope, N->getScope());
1412   EXPECT_EQ(Name, N->getName());
1413   EXPECT_EQ(LinkageName, N->getLinkageName());
1414   EXPECT_EQ(File, N->getFile());
1415   EXPECT_EQ(Line, N->getLine());
1416   EXPECT_EQ(Type, N->getType());
1417   EXPECT_EQ(IsLocalToUnit, N->isLocalToUnit());
1418   EXPECT_EQ(IsDefinition, N->isDefinition());
1419   EXPECT_EQ(ScopeLine, N->getScopeLine());
1420   EXPECT_EQ(ContainingType, N->getContainingType());
1421   EXPECT_EQ(Virtuality, N->getVirtuality());
1422   EXPECT_EQ(VirtualIndex, N->getVirtualIndex());
1423   EXPECT_EQ(Flags, N->getFlags());
1424   EXPECT_EQ(IsOptimized, N->isOptimized());
1425   EXPECT_EQ(TemplateParams, N->getTemplateParams().get());
1426   EXPECT_EQ(Declaration, N->getDeclaration());
1427   EXPECT_EQ(Variables, N->getVariables().get());
1428   EXPECT_EQ(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1429                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1430                                  ContainingType, Virtuality, VirtualIndex,
1431                                  Flags, IsOptimized, TemplateParams,
1432                                  Declaration, Variables));
1433
1434   EXPECT_NE(N, DISubprogram::get(Context, getCompositeType(), Name, LinkageName,
1435                                  File, Line, Type, IsLocalToUnit, IsDefinition,
1436                                  ScopeLine, ContainingType, Virtuality,
1437                                  VirtualIndex, Flags, IsOptimized,
1438                                  TemplateParams, Declaration, Variables));
1439   EXPECT_NE(N, DISubprogram::get(Context, Scope, "other", LinkageName, File,
1440                                  Line, Type, IsLocalToUnit, IsDefinition,
1441                                  ScopeLine, ContainingType, Virtuality,
1442                                  VirtualIndex, Flags, IsOptimized,
1443                                  TemplateParams, Declaration, Variables));
1444   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, "other", File, Line,
1445                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1446                                  ContainingType, Virtuality, VirtualIndex,
1447                                  Flags, IsOptimized, TemplateParams,
1448                                  Declaration, Variables));
1449   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, getFile(),
1450                                  Line, Type, IsLocalToUnit, IsDefinition,
1451                                  ScopeLine, ContainingType, Virtuality,
1452                                  VirtualIndex, Flags, IsOptimized,
1453                                  TemplateParams, Declaration, Variables));
1454   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File,
1455                                  Line + 1, Type, IsLocalToUnit, IsDefinition,
1456                                  ScopeLine, ContainingType, Virtuality,
1457                                  VirtualIndex, Flags, IsOptimized,
1458                                  TemplateParams, Declaration, Variables));
1459   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1460                                  getSubroutineType(), IsLocalToUnit,
1461                                  IsDefinition, ScopeLine, ContainingType,
1462                                  Virtuality, VirtualIndex, Flags, IsOptimized,
1463                                  TemplateParams, Declaration, Variables));
1464   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1465                                  Type, !IsLocalToUnit, IsDefinition, ScopeLine,
1466                                  ContainingType, Virtuality, VirtualIndex,
1467                                  Flags, IsOptimized, TemplateParams,
1468                                  Declaration, Variables));
1469   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1470                                  Type, IsLocalToUnit, !IsDefinition, ScopeLine,
1471                                  ContainingType, Virtuality, VirtualIndex,
1472                                  Flags, IsOptimized, TemplateParams,
1473                                  Declaration, Variables));
1474   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1475                                  Type, IsLocalToUnit, IsDefinition,
1476                                  ScopeLine + 1, ContainingType, Virtuality,
1477                                  VirtualIndex, Flags, IsOptimized,
1478                                  TemplateParams, Declaration, Variables));
1479   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1480                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1481                                  getCompositeType(), Virtuality, VirtualIndex,
1482                                  Flags, IsOptimized, TemplateParams,
1483                                  Declaration, Variables));
1484   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1485                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1486                                  ContainingType, Virtuality + 1, VirtualIndex,
1487                                  Flags, IsOptimized, TemplateParams,
1488                                  Declaration, Variables));
1489   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1490                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1491                                  ContainingType, Virtuality, VirtualIndex + 1,
1492                                  Flags, IsOptimized, TemplateParams,
1493                                  Declaration, Variables));
1494   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1495                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1496                                  ContainingType, Virtuality, VirtualIndex,
1497                                  ~Flags, IsOptimized, TemplateParams,
1498                                  Declaration, Variables));
1499   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1500                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1501                                  ContainingType, Virtuality, VirtualIndex,
1502                                  Flags, !IsOptimized, TemplateParams,
1503                                  Declaration, Variables));
1504   EXPECT_NE(N,
1505             DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1506                               Type, IsLocalToUnit, IsDefinition, ScopeLine,
1507                               ContainingType, Virtuality, VirtualIndex, Flags,
1508                               IsOptimized, getTuple(), Declaration, Variables));
1509   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1510                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1511                                  ContainingType, Virtuality, VirtualIndex,
1512                                  Flags, IsOptimized, TemplateParams,
1513                                  getSubprogram(), Variables));
1514   EXPECT_NE(N, DISubprogram::get(Context, Scope, Name, LinkageName, File, Line,
1515                                  Type, IsLocalToUnit, IsDefinition, ScopeLine,
1516                                  ContainingType, Virtuality, VirtualIndex,
1517                                  Flags, IsOptimized, TemplateParams,
1518                                  Declaration, getTuple()));
1519
1520   TempDISubprogram Temp = N->clone();
1521   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1522 }
1523
1524 typedef MetadataTest DILexicalBlockTest;
1525
1526 TEST_F(DILexicalBlockTest, get) {
1527   DILocalScope *Scope = getSubprogram();
1528   DIFile *File = getFile();
1529   unsigned Line = 5;
1530   unsigned Column = 8;
1531
1532   auto *N = DILexicalBlock::get(Context, Scope, File, Line, Column);
1533
1534   EXPECT_EQ(dwarf::DW_TAG_lexical_block, N->getTag());
1535   EXPECT_EQ(Scope, N->getScope());
1536   EXPECT_EQ(File, N->getFile());
1537   EXPECT_EQ(Line, N->getLine());
1538   EXPECT_EQ(Column, N->getColumn());
1539   EXPECT_EQ(N, DILexicalBlock::get(Context, Scope, File, Line, Column));
1540
1541   EXPECT_NE(N,
1542             DILexicalBlock::get(Context, getSubprogram(), File, Line, Column));
1543   EXPECT_NE(N, DILexicalBlock::get(Context, Scope, getFile(), Line, Column));
1544   EXPECT_NE(N, DILexicalBlock::get(Context, Scope, File, Line + 1, Column));
1545   EXPECT_NE(N, DILexicalBlock::get(Context, Scope, File, Line, Column + 1));
1546
1547   TempDILexicalBlock Temp = N->clone();
1548   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1549 }
1550
1551 TEST_F(DILexicalBlockTest, Overflow) {
1552   DISubprogram *SP = getSubprogram();
1553   DIFile *F = getFile();
1554   {
1555     auto *LB = DILexicalBlock::get(Context, SP, F, 2, 7);
1556     EXPECT_EQ(2u, LB->getLine());
1557     EXPECT_EQ(7u, LB->getColumn());
1558   }
1559   unsigned U16 = 1u << 16;
1560   {
1561     auto *LB = DILexicalBlock::get(Context, SP, F, UINT32_MAX, U16 - 1);
1562     EXPECT_EQ(UINT32_MAX, LB->getLine());
1563     EXPECT_EQ(U16 - 1, LB->getColumn());
1564   }
1565   {
1566     auto *LB = DILexicalBlock::get(Context, SP, F, UINT32_MAX, U16);
1567     EXPECT_EQ(UINT32_MAX, LB->getLine());
1568     EXPECT_EQ(0u, LB->getColumn());
1569   }
1570   {
1571     auto *LB = DILexicalBlock::get(Context, SP, F, UINT32_MAX, U16 + 1);
1572     EXPECT_EQ(UINT32_MAX, LB->getLine());
1573     EXPECT_EQ(0u, LB->getColumn());
1574   }
1575 }
1576
1577 typedef MetadataTest DILexicalBlockFileTest;
1578
1579 TEST_F(DILexicalBlockFileTest, get) {
1580   DILocalScope *Scope = getSubprogram();
1581   DIFile *File = getFile();
1582   unsigned Discriminator = 5;
1583
1584   auto *N = DILexicalBlockFile::get(Context, Scope, File, Discriminator);
1585
1586   EXPECT_EQ(dwarf::DW_TAG_lexical_block, N->getTag());
1587   EXPECT_EQ(Scope, N->getScope());
1588   EXPECT_EQ(File, N->getFile());
1589   EXPECT_EQ(Discriminator, N->getDiscriminator());
1590   EXPECT_EQ(N, DILexicalBlockFile::get(Context, Scope, File, Discriminator));
1591
1592   EXPECT_NE(N, DILexicalBlockFile::get(Context, getSubprogram(), File,
1593                                        Discriminator));
1594   EXPECT_NE(N,
1595             DILexicalBlockFile::get(Context, Scope, getFile(), Discriminator));
1596   EXPECT_NE(N,
1597             DILexicalBlockFile::get(Context, Scope, File, Discriminator + 1));
1598
1599   TempDILexicalBlockFile Temp = N->clone();
1600   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1601 }
1602
1603 typedef MetadataTest DINamespaceTest;
1604
1605 TEST_F(DINamespaceTest, get) {
1606   DIScope *Scope = getFile();
1607   DIFile *File = getFile();
1608   StringRef Name = "namespace";
1609   unsigned Line = 5;
1610
1611   auto *N = DINamespace::get(Context, Scope, File, Name, Line);
1612
1613   EXPECT_EQ(dwarf::DW_TAG_namespace, N->getTag());
1614   EXPECT_EQ(Scope, N->getScope());
1615   EXPECT_EQ(File, N->getFile());
1616   EXPECT_EQ(Name, N->getName());
1617   EXPECT_EQ(Line, N->getLine());
1618   EXPECT_EQ(N, DINamespace::get(Context, Scope, File, Name, Line));
1619
1620   EXPECT_NE(N, DINamespace::get(Context, getFile(), File, Name, Line));
1621   EXPECT_NE(N, DINamespace::get(Context, Scope, getFile(), Name, Line));
1622   EXPECT_NE(N, DINamespace::get(Context, Scope, File, "other", Line));
1623   EXPECT_NE(N, DINamespace::get(Context, Scope, File, Name, Line + 1));
1624
1625   TempDINamespace Temp = N->clone();
1626   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1627 }
1628
1629 typedef MetadataTest DIModuleTest;
1630
1631 TEST_F(DIModuleTest, get) {
1632   DIScope *Scope = getFile();
1633   StringRef Name = "module";
1634   StringRef ConfigMacro = "-DNDEBUG";
1635   StringRef Includes = "-I.";
1636   StringRef Sysroot = "/";
1637
1638   auto *N = DIModule::get(Context, Scope, Name, ConfigMacro, Includes, Sysroot);
1639
1640   EXPECT_EQ(dwarf::DW_TAG_module, N->getTag());
1641   EXPECT_EQ(Scope, N->getScope());
1642   EXPECT_EQ(Name, N->getName());
1643   EXPECT_EQ(ConfigMacro, N->getConfigurationMacros());
1644   EXPECT_EQ(Includes, N->getIncludePath());
1645   EXPECT_EQ(Sysroot, N->getISysRoot());
1646   EXPECT_EQ(N, DIModule::get(Context, Scope, Name,
1647                              ConfigMacro, Includes, Sysroot));
1648   EXPECT_NE(N, DIModule::get(Context, getFile(), Name,
1649                              ConfigMacro, Includes, Sysroot));
1650   EXPECT_NE(N, DIModule::get(Context, Scope, "other",
1651                              ConfigMacro, Includes, Sysroot));
1652   EXPECT_NE(N, DIModule::get(Context, Scope, Name,
1653                              "other", Includes, Sysroot));
1654   EXPECT_NE(N, DIModule::get(Context, Scope, Name,
1655                              ConfigMacro, "other", Sysroot));
1656   EXPECT_NE(N, DIModule::get(Context, Scope, Name,
1657                              ConfigMacro, Includes, "other"));
1658
1659   TempDIModule Temp = N->clone();
1660   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1661 }
1662
1663 typedef MetadataTest DITemplateTypeParameterTest;
1664
1665 TEST_F(DITemplateTypeParameterTest, get) {
1666   StringRef Name = "template";
1667   DITypeRef Type = getBasicType("basic");
1668
1669   auto *N = DITemplateTypeParameter::get(Context, Name, Type);
1670
1671   EXPECT_EQ(dwarf::DW_TAG_template_type_parameter, N->getTag());
1672   EXPECT_EQ(Name, N->getName());
1673   EXPECT_EQ(Type, N->getType());
1674   EXPECT_EQ(N, DITemplateTypeParameter::get(Context, Name, Type));
1675
1676   EXPECT_NE(N, DITemplateTypeParameter::get(Context, "other", Type));
1677   EXPECT_NE(N,
1678             DITemplateTypeParameter::get(Context, Name, getBasicType("other")));
1679
1680   TempDITemplateTypeParameter Temp = N->clone();
1681   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1682 }
1683
1684 typedef MetadataTest DITemplateValueParameterTest;
1685
1686 TEST_F(DITemplateValueParameterTest, get) {
1687   unsigned Tag = dwarf::DW_TAG_template_value_parameter;
1688   StringRef Name = "template";
1689   DITypeRef Type = getBasicType("basic");
1690   Metadata *Value = getConstantAsMetadata();
1691
1692   auto *N = DITemplateValueParameter::get(Context, Tag, Name, Type, Value);
1693   EXPECT_EQ(Tag, N->getTag());
1694   EXPECT_EQ(Name, N->getName());
1695   EXPECT_EQ(Type, N->getType());
1696   EXPECT_EQ(Value, N->getValue());
1697   EXPECT_EQ(N, DITemplateValueParameter::get(Context, Tag, Name, Type, Value));
1698
1699   EXPECT_NE(N, DITemplateValueParameter::get(
1700                    Context, dwarf::DW_TAG_GNU_template_template_param, Name,
1701                    Type, Value));
1702   EXPECT_NE(N,
1703             DITemplateValueParameter::get(Context, Tag, "other", Type, Value));
1704   EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, Name,
1705                                              getBasicType("other"), Value));
1706   EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, Name, Type,
1707                                              getConstantAsMetadata()));
1708
1709   TempDITemplateValueParameter Temp = N->clone();
1710   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1711 }
1712
1713 typedef MetadataTest DIGlobalVariableTest;
1714
1715 TEST_F(DIGlobalVariableTest, get) {
1716   DIScope *Scope = getSubprogram();
1717   StringRef Name = "name";
1718   StringRef LinkageName = "linkage";
1719   DIFile *File = getFile();
1720   unsigned Line = 5;
1721   DITypeRef Type = getDerivedType();
1722   bool IsLocalToUnit = false;
1723   bool IsDefinition = true;
1724   Constant *Variable = getConstant();
1725   DIDerivedType *StaticDataMemberDeclaration =
1726       cast<DIDerivedType>(getDerivedType());
1727
1728   auto *N = DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
1729                                   Type, IsLocalToUnit, IsDefinition, Variable,
1730                                   StaticDataMemberDeclaration);
1731   EXPECT_EQ(dwarf::DW_TAG_variable, N->getTag());
1732   EXPECT_EQ(Scope, N->getScope());
1733   EXPECT_EQ(Name, N->getName());
1734   EXPECT_EQ(LinkageName, N->getLinkageName());
1735   EXPECT_EQ(File, N->getFile());
1736   EXPECT_EQ(Line, N->getLine());
1737   EXPECT_EQ(Type, N->getType());
1738   EXPECT_EQ(IsLocalToUnit, N->isLocalToUnit());
1739   EXPECT_EQ(IsDefinition, N->isDefinition());
1740   EXPECT_EQ(Variable, N->getVariable());
1741   EXPECT_EQ(StaticDataMemberDeclaration, N->getStaticDataMemberDeclaration());
1742   EXPECT_EQ(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
1743                                      Line, Type, IsLocalToUnit, IsDefinition,
1744                                      Variable, StaticDataMemberDeclaration));
1745
1746   EXPECT_NE(N,
1747             DIGlobalVariable::get(Context, getSubprogram(), Name, LinkageName,
1748                                   File, Line, Type, IsLocalToUnit, IsDefinition,
1749                                   Variable, StaticDataMemberDeclaration));
1750   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, "other", LinkageName, File,
1751                                      Line, Type, IsLocalToUnit, IsDefinition,
1752                                      Variable, StaticDataMemberDeclaration));
1753   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, "other", File, Line,
1754                                      Type, IsLocalToUnit, IsDefinition,
1755                                      Variable, StaticDataMemberDeclaration));
1756   EXPECT_NE(N,
1757             DIGlobalVariable::get(Context, Scope, Name, LinkageName, getFile(),
1758                                   Line, Type, IsLocalToUnit, IsDefinition,
1759                                   Variable, StaticDataMemberDeclaration));
1760   EXPECT_NE(N,
1761             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
1762                                   Line + 1, Type, IsLocalToUnit, IsDefinition,
1763                                   Variable, StaticDataMemberDeclaration));
1764   EXPECT_NE(N,
1765             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
1766                                   getDerivedType(), IsLocalToUnit, IsDefinition,
1767                                   Variable, StaticDataMemberDeclaration));
1768   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
1769                                      Line, Type, !IsLocalToUnit, IsDefinition,
1770                                      Variable, StaticDataMemberDeclaration));
1771   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
1772                                      Line, Type, IsLocalToUnit, !IsDefinition,
1773                                      Variable, StaticDataMemberDeclaration));
1774   EXPECT_NE(N,
1775             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
1776                                   Type, IsLocalToUnit, IsDefinition,
1777                                   getConstant(), StaticDataMemberDeclaration));
1778   EXPECT_NE(N,
1779             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
1780                                   Type, IsLocalToUnit, IsDefinition, Variable,
1781                                   cast<DIDerivedType>(getDerivedType())));
1782
1783   TempDIGlobalVariable Temp = N->clone();
1784   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1785 }
1786
1787 typedef MetadataTest DILocalVariableTest;
1788
1789 TEST_F(DILocalVariableTest, get) {
1790   DILocalScope *Scope = getSubprogram();
1791   StringRef Name = "name";
1792   DIFile *File = getFile();
1793   unsigned Line = 5;
1794   DITypeRef Type = getDerivedType();
1795   unsigned Arg = 6;
1796   unsigned Flags = 7;
1797
1798   auto *N =
1799       DILocalVariable::get(Context, Scope, Name, File, Line, Type, Arg, Flags);
1800   EXPECT_TRUE(N->isParameter());
1801   EXPECT_EQ(Scope, N->getScope());
1802   EXPECT_EQ(Name, N->getName());
1803   EXPECT_EQ(File, N->getFile());
1804   EXPECT_EQ(Line, N->getLine());
1805   EXPECT_EQ(Type, N->getType());
1806   EXPECT_EQ(Arg, N->getArg());
1807   EXPECT_EQ(Flags, N->getFlags());
1808   EXPECT_EQ(N, DILocalVariable::get(Context, Scope, Name, File, Line, Type, Arg,
1809                                     Flags));
1810
1811   EXPECT_FALSE(
1812       DILocalVariable::get(Context, Scope, Name, File, Line, Type, 0, Flags)
1813           ->isParameter());
1814   EXPECT_NE(N, DILocalVariable::get(Context, getSubprogram(), Name, File, Line,
1815                                     Type, Arg, Flags));
1816   EXPECT_NE(N, DILocalVariable::get(Context, Scope, "other", File, Line, Type,
1817                                     Arg, Flags));
1818   EXPECT_NE(N, DILocalVariable::get(Context, Scope, Name, getFile(), Line, Type,
1819                                     Arg, Flags));
1820   EXPECT_NE(N, DILocalVariable::get(Context, Scope, Name, File, Line + 1, Type,
1821                                     Arg, Flags));
1822   EXPECT_NE(N, DILocalVariable::get(Context, Scope, Name, File, Line,
1823                                     getDerivedType(), Arg, Flags));
1824   EXPECT_NE(N, DILocalVariable::get(Context, Scope, Name, File, Line, Type,
1825                                     Arg + 1, Flags));
1826   EXPECT_NE(N, DILocalVariable::get(Context, Scope, Name, File, Line, Type, Arg,
1827                                     ~Flags));
1828
1829   TempDILocalVariable Temp = N->clone();
1830   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1831 }
1832
1833 TEST_F(DILocalVariableTest, getArg256) {
1834   EXPECT_EQ(255u, DILocalVariable::get(Context, getSubprogram(), "", getFile(),
1835                                        0, nullptr, 255, 0)
1836                       ->getArg());
1837   EXPECT_EQ(256u, DILocalVariable::get(Context, getSubprogram(), "", getFile(),
1838                                        0, nullptr, 256, 0)
1839                       ->getArg());
1840   EXPECT_EQ(257u, DILocalVariable::get(Context, getSubprogram(), "", getFile(),
1841                                        0, nullptr, 257, 0)
1842                       ->getArg());
1843   unsigned Max = UINT16_MAX;
1844   EXPECT_EQ(Max, DILocalVariable::get(Context, getSubprogram(), "", getFile(),
1845                                       0, nullptr, Max, 0)
1846                      ->getArg());
1847 }
1848
1849 typedef MetadataTest DIExpressionTest;
1850
1851 TEST_F(DIExpressionTest, get) {
1852   uint64_t Elements[] = {2, 6, 9, 78, 0};
1853   auto *N = DIExpression::get(Context, Elements);
1854   EXPECT_EQ(makeArrayRef(Elements), N->getElements());
1855   EXPECT_EQ(N, DIExpression::get(Context, Elements));
1856
1857   EXPECT_EQ(5u, N->getNumElements());
1858   EXPECT_EQ(2u, N->getElement(0));
1859   EXPECT_EQ(6u, N->getElement(1));
1860   EXPECT_EQ(9u, N->getElement(2));
1861   EXPECT_EQ(78u, N->getElement(3));
1862   EXPECT_EQ(0u, N->getElement(4));
1863
1864   TempDIExpression Temp = N->clone();
1865   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1866 }
1867
1868 TEST_F(DIExpressionTest, isValid) {
1869 #define EXPECT_VALID(...)                                                      \
1870   do {                                                                         \
1871     uint64_t Elements[] = {__VA_ARGS__};                                       \
1872     EXPECT_TRUE(DIExpression::get(Context, Elements)->isValid());              \
1873   } while (false)
1874 #define EXPECT_INVALID(...)                                                    \
1875   do {                                                                         \
1876     uint64_t Elements[] = {__VA_ARGS__};                                       \
1877     EXPECT_FALSE(DIExpression::get(Context, Elements)->isValid());             \
1878   } while (false)
1879
1880   // Empty expression should be valid.
1881   EXPECT_TRUE(DIExpression::get(Context, None));
1882
1883   // Valid constructions.
1884   EXPECT_VALID(dwarf::DW_OP_plus, 6);
1885   EXPECT_VALID(dwarf::DW_OP_deref);
1886   EXPECT_VALID(dwarf::DW_OP_bit_piece, 3, 7);
1887   EXPECT_VALID(dwarf::DW_OP_plus, 6, dwarf::DW_OP_deref);
1888   EXPECT_VALID(dwarf::DW_OP_deref, dwarf::DW_OP_plus, 6);
1889   EXPECT_VALID(dwarf::DW_OP_deref, dwarf::DW_OP_bit_piece, 3, 7);
1890   EXPECT_VALID(dwarf::DW_OP_deref, dwarf::DW_OP_plus, 6, dwarf::DW_OP_bit_piece, 3, 7);
1891
1892   // Invalid constructions.
1893   EXPECT_INVALID(~0u);
1894   EXPECT_INVALID(dwarf::DW_OP_plus);
1895   EXPECT_INVALID(dwarf::DW_OP_bit_piece);
1896   EXPECT_INVALID(dwarf::DW_OP_bit_piece, 3);
1897   EXPECT_INVALID(dwarf::DW_OP_bit_piece, 3, 7, dwarf::DW_OP_plus, 3);
1898   EXPECT_INVALID(dwarf::DW_OP_bit_piece, 3, 7, dwarf::DW_OP_deref);
1899
1900 #undef EXPECT_VALID
1901 #undef EXPECT_INVALID
1902 }
1903
1904 typedef MetadataTest DIObjCPropertyTest;
1905
1906 TEST_F(DIObjCPropertyTest, get) {
1907   StringRef Name = "name";
1908   DIFile *File = getFile();
1909   unsigned Line = 5;
1910   StringRef GetterName = "getter";
1911   StringRef SetterName = "setter";
1912   unsigned Attributes = 7;
1913   DITypeRef Type = getBasicType("basic");
1914
1915   auto *N = DIObjCProperty::get(Context, Name, File, Line, GetterName,
1916                                 SetterName, Attributes, Type);
1917
1918   EXPECT_EQ(dwarf::DW_TAG_APPLE_property, N->getTag());
1919   EXPECT_EQ(Name, N->getName());
1920   EXPECT_EQ(File, N->getFile());
1921   EXPECT_EQ(Line, N->getLine());
1922   EXPECT_EQ(GetterName, N->getGetterName());
1923   EXPECT_EQ(SetterName, N->getSetterName());
1924   EXPECT_EQ(Attributes, N->getAttributes());
1925   EXPECT_EQ(Type, N->getType());
1926   EXPECT_EQ(N, DIObjCProperty::get(Context, Name, File, Line, GetterName,
1927                                    SetterName, Attributes, Type));
1928
1929   EXPECT_NE(N, DIObjCProperty::get(Context, "other", File, Line, GetterName,
1930                                    SetterName, Attributes, Type));
1931   EXPECT_NE(N, DIObjCProperty::get(Context, Name, getFile(), Line, GetterName,
1932                                    SetterName, Attributes, Type));
1933   EXPECT_NE(N, DIObjCProperty::get(Context, Name, File, Line + 1, GetterName,
1934                                    SetterName, Attributes, Type));
1935   EXPECT_NE(N, DIObjCProperty::get(Context, Name, File, Line, "other",
1936                                    SetterName, Attributes, Type));
1937   EXPECT_NE(N, DIObjCProperty::get(Context, Name, File, Line, GetterName,
1938                                    "other", Attributes, Type));
1939   EXPECT_NE(N, DIObjCProperty::get(Context, Name, File, Line, GetterName,
1940                                    SetterName, Attributes + 1, Type));
1941   EXPECT_NE(N, DIObjCProperty::get(Context, Name, File, Line, GetterName,
1942                                    SetterName, Attributes,
1943                                    getBasicType("other")));
1944
1945   TempDIObjCProperty Temp = N->clone();
1946   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1947 }
1948
1949 typedef MetadataTest DIImportedEntityTest;
1950
1951 TEST_F(DIImportedEntityTest, get) {
1952   unsigned Tag = dwarf::DW_TAG_imported_module;
1953   DIScope *Scope = getSubprogram();
1954   DINodeRef Entity = getCompositeType();
1955   unsigned Line = 5;
1956   StringRef Name = "name";
1957
1958   auto *N = DIImportedEntity::get(Context, Tag, Scope, Entity, Line, Name);
1959
1960   EXPECT_EQ(Tag, N->getTag());
1961   EXPECT_EQ(Scope, N->getScope());
1962   EXPECT_EQ(Entity, N->getEntity());
1963   EXPECT_EQ(Line, N->getLine());
1964   EXPECT_EQ(Name, N->getName());
1965   EXPECT_EQ(N, DIImportedEntity::get(Context, Tag, Scope, Entity, Line, Name));
1966
1967   EXPECT_NE(N,
1968             DIImportedEntity::get(Context, dwarf::DW_TAG_imported_declaration,
1969                                   Scope, Entity, Line, Name));
1970   EXPECT_NE(N, DIImportedEntity::get(Context, Tag, getSubprogram(), Entity,
1971                                      Line, Name));
1972   EXPECT_NE(N, DIImportedEntity::get(Context, Tag, Scope, getCompositeType(),
1973                                      Line, Name));
1974   EXPECT_NE(N,
1975             DIImportedEntity::get(Context, Tag, Scope, Entity, Line + 1, Name));
1976   EXPECT_NE(N,
1977             DIImportedEntity::get(Context, Tag, Scope, Entity, Line, "other"));
1978
1979   TempDIImportedEntity Temp = N->clone();
1980   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
1981 }
1982
1983 typedef MetadataTest MetadataAsValueTest;
1984
1985 TEST_F(MetadataAsValueTest, MDNode) {
1986   MDNode *N = MDNode::get(Context, None);
1987   auto *V = MetadataAsValue::get(Context, N);
1988   EXPECT_TRUE(V->getType()->isMetadataTy());
1989   EXPECT_EQ(N, V->getMetadata());
1990
1991   auto *V2 = MetadataAsValue::get(Context, N);
1992   EXPECT_EQ(V, V2);
1993 }
1994
1995 TEST_F(MetadataAsValueTest, MDNodeMDNode) {
1996   MDNode *N = MDNode::get(Context, None);
1997   Metadata *Ops[] = {N};
1998   MDNode *N2 = MDNode::get(Context, Ops);
1999   auto *V = MetadataAsValue::get(Context, N2);
2000   EXPECT_TRUE(V->getType()->isMetadataTy());
2001   EXPECT_EQ(N2, V->getMetadata());
2002
2003   auto *V2 = MetadataAsValue::get(Context, N2);
2004   EXPECT_EQ(V, V2);
2005
2006   auto *V3 = MetadataAsValue::get(Context, N);
2007   EXPECT_TRUE(V3->getType()->isMetadataTy());
2008   EXPECT_NE(V, V3);
2009   EXPECT_EQ(N, V3->getMetadata());
2010 }
2011
2012 TEST_F(MetadataAsValueTest, MDNodeConstant) {
2013   auto *C = ConstantInt::getTrue(Context);
2014   auto *MD = ConstantAsMetadata::get(C);
2015   Metadata *Ops[] = {MD};
2016   auto *N = MDNode::get(Context, Ops);
2017
2018   auto *V = MetadataAsValue::get(Context, MD);
2019   EXPECT_TRUE(V->getType()->isMetadataTy());
2020   EXPECT_EQ(MD, V->getMetadata());
2021
2022   auto *V2 = MetadataAsValue::get(Context, N);
2023   EXPECT_EQ(MD, V2->getMetadata());
2024   EXPECT_EQ(V, V2);
2025 }
2026
2027 typedef MetadataTest ValueAsMetadataTest;
2028
2029 TEST_F(ValueAsMetadataTest, UpdatesOnRAUW) {
2030   Type *Ty = Type::getInt1PtrTy(Context);
2031   std::unique_ptr<GlobalVariable> GV0(
2032       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
2033   auto *MD = ValueAsMetadata::get(GV0.get());
2034   EXPECT_TRUE(MD->getValue() == GV0.get());
2035   ASSERT_TRUE(GV0->use_empty());
2036
2037   std::unique_ptr<GlobalVariable> GV1(
2038       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
2039   GV0->replaceAllUsesWith(GV1.get());
2040   EXPECT_TRUE(MD->getValue() == GV1.get());
2041 }
2042
2043 TEST_F(ValueAsMetadataTest, CollidingDoubleUpdates) {
2044   // Create a constant.
2045   ConstantAsMetadata *CI = ConstantAsMetadata::get(
2046       ConstantInt::get(getGlobalContext(), APInt(8, 0)));
2047
2048   // Create a temporary to prevent nodes from resolving.
2049   auto Temp = MDTuple::getTemporary(Context, None);
2050
2051   // When the first operand of N1 gets reset to nullptr, it'll collide with N2.
2052   Metadata *Ops1[] = {CI, CI, Temp.get()};
2053   Metadata *Ops2[] = {nullptr, CI, Temp.get()};
2054
2055   auto *N1 = MDTuple::get(Context, Ops1);
2056   auto *N2 = MDTuple::get(Context, Ops2);
2057   ASSERT_NE(N1, N2);
2058
2059   // Tell metadata that the constant is getting deleted.
2060   //
2061   // After this, N1 will be invalid, so don't touch it.
2062   ValueAsMetadata::handleDeletion(CI->getValue());
2063   EXPECT_EQ(nullptr, N2->getOperand(0));
2064   EXPECT_EQ(nullptr, N2->getOperand(1));
2065   EXPECT_EQ(Temp.get(), N2->getOperand(2));
2066
2067   // Clean up Temp for teardown.
2068   Temp->replaceAllUsesWith(nullptr);
2069 }
2070
2071 typedef MetadataTest TrackingMDRefTest;
2072
2073 TEST_F(TrackingMDRefTest, UpdatesOnRAUW) {
2074   Type *Ty = Type::getInt1PtrTy(Context);
2075   std::unique_ptr<GlobalVariable> GV0(
2076       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
2077   TypedTrackingMDRef<ValueAsMetadata> MD(ValueAsMetadata::get(GV0.get()));
2078   EXPECT_TRUE(MD->getValue() == GV0.get());
2079   ASSERT_TRUE(GV0->use_empty());
2080
2081   std::unique_ptr<GlobalVariable> GV1(
2082       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
2083   GV0->replaceAllUsesWith(GV1.get());
2084   EXPECT_TRUE(MD->getValue() == GV1.get());
2085
2086   // Reset it, so we don't inadvertently test deletion.
2087   MD.reset();
2088 }
2089
2090 TEST_F(TrackingMDRefTest, UpdatesOnDeletion) {
2091   Type *Ty = Type::getInt1PtrTy(Context);
2092   std::unique_ptr<GlobalVariable> GV(
2093       new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
2094   TypedTrackingMDRef<ValueAsMetadata> MD(ValueAsMetadata::get(GV.get()));
2095   EXPECT_TRUE(MD->getValue() == GV.get());
2096   ASSERT_TRUE(GV->use_empty());
2097
2098   GV.reset();
2099   EXPECT_TRUE(!MD);
2100 }
2101
2102 TEST(NamedMDNodeTest, Search) {
2103   LLVMContext Context;
2104   ConstantAsMetadata *C =
2105       ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(Context), 1));
2106   ConstantAsMetadata *C2 =
2107       ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(Context), 2));
2108
2109   Metadata *const V = C;
2110   Metadata *const V2 = C2;
2111   MDNode *n = MDNode::get(Context, V);
2112   MDNode *n2 = MDNode::get(Context, V2);
2113
2114   Module M("MyModule", Context);
2115   const char *Name = "llvm.NMD1";
2116   NamedMDNode *NMD = M.getOrInsertNamedMetadata(Name);
2117   NMD->addOperand(n);
2118   NMD->addOperand(n2);
2119
2120   std::string Str;
2121   raw_string_ostream oss(Str);
2122   NMD->print(oss);
2123   EXPECT_STREQ("!llvm.NMD1 = !{!0, !1}\n",
2124                oss.str().c_str());
2125 }
2126
2127 typedef MetadataTest FunctionAttachmentTest;
2128 TEST_F(FunctionAttachmentTest, setMetadata) {
2129   Function *F = getFunction("foo");
2130   ASSERT_FALSE(F->hasMetadata());
2131   EXPECT_EQ(nullptr, F->getMetadata(LLVMContext::MD_dbg));
2132   EXPECT_EQ(nullptr, F->getMetadata("dbg"));
2133   EXPECT_EQ(nullptr, F->getMetadata("other"));
2134
2135   DISubprogram *SP1 = getSubprogram();
2136   DISubprogram *SP2 = getSubprogram();
2137   ASSERT_NE(SP1, SP2);
2138
2139   F->setMetadata("dbg", SP1);
2140   EXPECT_TRUE(F->hasMetadata());
2141   EXPECT_EQ(SP1, F->getMetadata(LLVMContext::MD_dbg));
2142   EXPECT_EQ(SP1, F->getMetadata("dbg"));
2143   EXPECT_EQ(nullptr, F->getMetadata("other"));
2144
2145   F->setMetadata(LLVMContext::MD_dbg, SP2);
2146   EXPECT_TRUE(F->hasMetadata());
2147   EXPECT_EQ(SP2, F->getMetadata(LLVMContext::MD_dbg));
2148   EXPECT_EQ(SP2, F->getMetadata("dbg"));
2149   EXPECT_EQ(nullptr, F->getMetadata("other"));
2150
2151   F->setMetadata("dbg", nullptr);
2152   EXPECT_FALSE(F->hasMetadata());
2153   EXPECT_EQ(nullptr, F->getMetadata(LLVMContext::MD_dbg));
2154   EXPECT_EQ(nullptr, F->getMetadata("dbg"));
2155   EXPECT_EQ(nullptr, F->getMetadata("other"));
2156
2157   MDTuple *T1 = getTuple();
2158   MDTuple *T2 = getTuple();
2159   ASSERT_NE(T1, T2);
2160
2161   F->setMetadata("other1", T1);
2162   F->setMetadata("other2", T2);
2163   EXPECT_TRUE(F->hasMetadata());
2164   EXPECT_EQ(T1, F->getMetadata("other1"));
2165   EXPECT_EQ(T2, F->getMetadata("other2"));
2166   EXPECT_EQ(nullptr, F->getMetadata("dbg"));
2167
2168   F->setMetadata("other1", T2);
2169   F->setMetadata("other2", T1);
2170   EXPECT_EQ(T2, F->getMetadata("other1"));
2171   EXPECT_EQ(T1, F->getMetadata("other2"));
2172
2173   F->setMetadata("other1", nullptr);
2174   F->setMetadata("other2", nullptr);
2175   EXPECT_FALSE(F->hasMetadata());
2176   EXPECT_EQ(nullptr, F->getMetadata("other1"));
2177   EXPECT_EQ(nullptr, F->getMetadata("other2"));
2178 }
2179
2180 TEST_F(FunctionAttachmentTest, getAll) {
2181   Function *F = getFunction("foo");
2182
2183   MDTuple *T1 = getTuple();
2184   MDTuple *T2 = getTuple();
2185   MDTuple *P = getTuple();
2186   DISubprogram *SP = getSubprogram();
2187
2188   F->setMetadata("other1", T2);
2189   F->setMetadata(LLVMContext::MD_dbg, SP);
2190   F->setMetadata("other2", T1);
2191   F->setMetadata(LLVMContext::MD_prof, P);
2192   F->setMetadata("other2", T2);
2193   F->setMetadata("other1", T1);
2194
2195   SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
2196   F->getAllMetadata(MDs);
2197   ASSERT_EQ(4u, MDs.size());
2198   EXPECT_EQ(LLVMContext::MD_dbg, MDs[0].first);
2199   EXPECT_EQ(LLVMContext::MD_prof, MDs[1].first);
2200   EXPECT_EQ(Context.getMDKindID("other1"), MDs[2].first);
2201   EXPECT_EQ(Context.getMDKindID("other2"), MDs[3].first);
2202   EXPECT_EQ(SP, MDs[0].second);
2203   EXPECT_EQ(P, MDs[1].second);
2204   EXPECT_EQ(T1, MDs[2].second);
2205   EXPECT_EQ(T2, MDs[3].second);
2206 }
2207
2208 TEST_F(FunctionAttachmentTest, dropUnknownMetadata) {
2209   Function *F = getFunction("foo");
2210
2211   MDTuple *T1 = getTuple();
2212   MDTuple *T2 = getTuple();
2213   MDTuple *P = getTuple();
2214   DISubprogram *SP = getSubprogram();
2215
2216   F->setMetadata("other1", T1);
2217   F->setMetadata(LLVMContext::MD_dbg, SP);
2218   F->setMetadata("other2", T2);
2219   F->setMetadata(LLVMContext::MD_prof, P);
2220
2221   unsigned Known[] = {Context.getMDKindID("other2"), LLVMContext::MD_prof};
2222   F->dropUnknownMetadata(Known);
2223
2224   EXPECT_EQ(T2, F->getMetadata("other2"));
2225   EXPECT_EQ(P, F->getMetadata(LLVMContext::MD_prof));
2226   EXPECT_EQ(nullptr, F->getMetadata("other1"));
2227   EXPECT_EQ(nullptr, F->getMetadata(LLVMContext::MD_dbg));
2228
2229   F->setMetadata("other2", nullptr);
2230   F->setMetadata(LLVMContext::MD_prof, nullptr);
2231   EXPECT_FALSE(F->hasMetadata());
2232 }
2233
2234 TEST_F(FunctionAttachmentTest, Verifier) {
2235   Function *F = getFunction("foo");
2236   F->setMetadata("attach", getTuple());
2237
2238   // Confirm this has no body.
2239   ASSERT_TRUE(F->empty());
2240
2241   // Functions without a body cannot have metadata attachments (they also can't
2242   // be verified directly, so check that the module fails to verify).
2243   EXPECT_TRUE(verifyModule(*F->getParent()));
2244
2245   // Functions with a body can.
2246   (void)new UnreachableInst(Context, BasicBlock::Create(Context, "bb", F));
2247   EXPECT_FALSE(verifyModule(*F->getParent()));
2248   EXPECT_FALSE(verifyFunction(*F));
2249 }
2250
2251 TEST_F(FunctionAttachmentTest, EntryCount) {
2252   Function *F = getFunction("foo");
2253   EXPECT_FALSE(F->getEntryCount().hasValue());
2254   F->setEntryCount(12304);
2255   EXPECT_TRUE(F->getEntryCount().hasValue());
2256   EXPECT_EQ(12304u, *F->getEntryCount());
2257 }
2258
2259 TEST_F(FunctionAttachmentTest, SubprogramAttachment) {
2260   Function *F = getFunction("foo");
2261   DISubprogram *SP = getSubprogram();
2262   F->setSubprogram(SP);
2263
2264   // Note that the static_cast confirms that F->getSubprogram() actually
2265   // returns an DISubprogram.
2266   EXPECT_EQ(SP, static_cast<DISubprogram *>(F->getSubprogram()));
2267   EXPECT_EQ(SP, F->getMetadata("dbg"));
2268   EXPECT_EQ(SP, F->getMetadata(LLVMContext::MD_dbg));
2269 }
2270
2271 }