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	Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236120 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			551 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			551 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
//===- DebugInfoMetadata.cpp - Implement debug info metadata --------------===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the debug info Metadata classes.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/DebugInfoMetadata.h"
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#include "LLVMContextImpl.h"
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#include "MetadataImpl.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/IR/Function.h"
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using namespace llvm;
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DILocation::DILocation(LLVMContext &C, StorageType Storage, unsigned Line,
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                       unsigned Column, ArrayRef<Metadata *> MDs)
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    : MDNode(C, DILocationKind, Storage, MDs) {
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  assert((MDs.size() == 1 || MDs.size() == 2) &&
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         "Expected a scope and optional inlined-at");
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  // Set line and column.
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  assert(Column < (1u << 16) && "Expected 16-bit column");
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  SubclassData32 = Line;
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  SubclassData16 = Column;
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}
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static void adjustColumn(unsigned &Column) {
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  // Set to unknown on overflow.  We only have 16 bits to play with here.
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  if (Column >= (1u << 16))
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    Column = 0;
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}
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DILocation *DILocation::getImpl(LLVMContext &Context, unsigned Line,
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                                unsigned Column, Metadata *Scope,
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                                Metadata *InlinedAt, StorageType Storage,
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                                bool ShouldCreate) {
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  // Fixup column.
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  adjustColumn(Column);
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  assert(Scope && "Expected scope");
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  if (Storage == Uniqued) {
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    if (auto *N =
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            getUniqued(Context.pImpl->DILocations,
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                       DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
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      return N;
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    if (!ShouldCreate)
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      return nullptr;
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  } else {
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    assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
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  }
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  SmallVector<Metadata *, 2> Ops;
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  Ops.push_back(Scope);
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  if (InlinedAt)
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    Ops.push_back(InlinedAt);
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  return storeImpl(new (Ops.size())
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                       DILocation(Context, Storage, Line, Column, Ops),
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                   Storage, Context.pImpl->DILocations);
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}
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unsigned DILocation::computeNewDiscriminator() const {
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  // FIXME: This seems completely wrong.
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  //
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  //  1. If two modules are generated in the same context, then the second
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  //     Module will get different discriminators than it would have if it were
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  //     generated in its own context.
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  //  2. If this function is called after round-tripping to bitcode instead of
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  //     before, it will give a different (and potentially incorrect!) return.
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  //
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  // The discriminator should instead be calculated from local information
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  // where it's actually needed.  This logic should be moved to
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  // AddDiscriminators::runOnFunction(), where it doesn't pollute the
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  // LLVMContext.
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  std::pair<const char *, unsigned> Key(getFilename().data(), getLine());
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  return ++getContext().pImpl->DiscriminatorTable[Key];
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}
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unsigned DINode::getFlag(StringRef Flag) {
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  return StringSwitch<unsigned>(Flag)
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#define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME)
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#include "llvm/IR/DebugInfoFlags.def"
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      .Default(0);
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}
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const char *DINode::getFlagString(unsigned Flag) {
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  switch (Flag) {
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  default:
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    return "";
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#define HANDLE_DI_FLAG(ID, NAME)                                               \
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  case Flag##NAME:                                                             \
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    return "DIFlag" #NAME;
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#include "llvm/IR/DebugInfoFlags.def"
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  }
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}
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unsigned DINode::splitFlags(unsigned Flags,
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                            SmallVectorImpl<unsigned> &SplitFlags) {
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  // Accessibility flags need to be specially handled, since they're packed
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  // together.
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  if (unsigned A = Flags & FlagAccessibility) {
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    if (A == FlagPrivate)
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      SplitFlags.push_back(FlagPrivate);
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    else if (A == FlagProtected)
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      SplitFlags.push_back(FlagProtected);
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    else
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      SplitFlags.push_back(FlagPublic);
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    Flags &= ~A;
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  }
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#define HANDLE_DI_FLAG(ID, NAME)                                               \
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  if (unsigned Bit = Flags & ID) {                                             \
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    SplitFlags.push_back(Bit);                                                 \
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    Flags &= ~Bit;                                                             \
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  }
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#include "llvm/IR/DebugInfoFlags.def"
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  return Flags;
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}
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DIScopeRef DIScope::getScope() const {
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  if (auto *T = dyn_cast<DIType>(this))
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    return T->getScope();
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  if (auto *SP = dyn_cast<DISubprogram>(this))
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    return SP->getScope();
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  if (auto *LB = dyn_cast<DILexicalBlockBase>(this))
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    return DIScopeRef(LB->getScope());
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  if (auto *NS = dyn_cast<DINamespace>(this))
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    return DIScopeRef(NS->getScope());
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  assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) &&
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         "Unhandled type of scope.");
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  return nullptr;
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}
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StringRef DIScope::getName() const {
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  if (auto *T = dyn_cast<DIType>(this))
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    return T->getName();
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  if (auto *SP = dyn_cast<DISubprogram>(this))
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    return SP->getName();
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  if (auto *NS = dyn_cast<DINamespace>(this))
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    return NS->getName();
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  assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) ||
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          isa<DICompileUnit>(this)) &&
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         "Unhandled type of scope.");
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  return "";
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}
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static StringRef getString(const MDString *S) {
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  if (S)
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    return S->getString();
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  return StringRef();
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}
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#ifndef NDEBUG
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static bool isCanonical(const MDString *S) {
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  return !S || !S->getString().empty();
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}
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#endif
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GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,
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                                      MDString *Header,
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                                      ArrayRef<Metadata *> DwarfOps,
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                                      StorageType Storage, bool ShouldCreate) {
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  unsigned Hash = 0;
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  if (Storage == Uniqued) {
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    GenericDINodeInfo::KeyTy Key(Tag, getString(Header), DwarfOps);
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    if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key))
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      return N;
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    if (!ShouldCreate)
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      return nullptr;
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    Hash = Key.getHash();
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  } else {
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    assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
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  }
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  // Use a nullptr for empty headers.
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  assert(isCanonical(Header) && "Expected canonical MDString");
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  Metadata *PreOps[] = {Header};
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  return storeImpl(new (DwarfOps.size() + 1) GenericDINode(
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                       Context, Storage, Hash, Tag, PreOps, DwarfOps),
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                   Storage, Context.pImpl->GenericDINodes);
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}
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void GenericDINode::recalculateHash() {
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  setHash(GenericDINodeInfo::KeyTy::calculateHash(this));
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}
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#define UNWRAP_ARGS_IMPL(...) __VA_ARGS__
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#define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS
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#define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS)                                     \
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  do {                                                                         \
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    if (Storage == Uniqued) {                                                  \
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      if (auto *N = getUniqued(Context.pImpl->CLASS##s,                        \
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                               CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS))))         \
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        return N;                                                              \
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      if (!ShouldCreate)                                                       \
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        return nullptr;                                                        \
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    } else {                                                                   \
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      assert(ShouldCreate &&                                                   \
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             "Expected non-uniqued nodes to always be created");               \
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    }                                                                          \
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  } while (false)
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#define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS)                                 \
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  return storeImpl(new (ArrayRef<Metadata *>(OPS).size())                      \
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                       CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS),        \
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                   Storage, Context.pImpl->CLASS##s)
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#define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS)                               \
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  return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)),        \
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                   Storage, Context.pImpl->CLASS##s)
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#define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS)                   \
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  return storeImpl(new (ArrayRef<Metadata *>(OPS).size())                      \
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                       CLASS(Context, Storage, OPS),                           \
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                   Storage, Context.pImpl->CLASS##s)
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DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo,
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                                StorageType Storage, bool ShouldCreate) {
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  DEFINE_GETIMPL_LOOKUP(DISubrange, (Count, Lo));
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  DEFINE_GETIMPL_STORE_NO_OPS(DISubrange, (Count, Lo));
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}
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DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value,
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                                    MDString *Name, StorageType Storage,
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                                    bool ShouldCreate) {
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  assert(isCanonical(Name) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, getString(Name)));
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  Metadata *Ops[] = {Name};
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  DEFINE_GETIMPL_STORE(DIEnumerator, (Value), Ops);
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}
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DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag,
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                                  MDString *Name, uint64_t SizeInBits,
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                                  uint64_t AlignInBits, unsigned Encoding,
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                                  StorageType Storage, bool ShouldCreate) {
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  assert(isCanonical(Name) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(
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      DIBasicType, (Tag, getString(Name), SizeInBits, AlignInBits, Encoding));
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  Metadata *Ops[] = {nullptr, nullptr, Name};
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  DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding),
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                       Ops);
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}
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DIDerivedType *DIDerivedType::getImpl(
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    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
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    unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
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    uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
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    Metadata *ExtraData, StorageType Storage, bool ShouldCreate) {
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  assert(isCanonical(Name) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(DIDerivedType, (Tag, getString(Name), File, Line, Scope,
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                                        BaseType, SizeInBits, AlignInBits,
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                                        OffsetInBits, Flags, ExtraData));
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  Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData};
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  DEFINE_GETIMPL_STORE(
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      DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits, Flags),
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      Ops);
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}
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DICompositeType *DICompositeType::getImpl(
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    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
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    unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
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    uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
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    Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder,
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    Metadata *TemplateParams, MDString *Identifier, StorageType Storage,
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    bool ShouldCreate) {
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  assert(isCanonical(Name) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(DICompositeType,
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                        (Tag, getString(Name), File, Line, Scope, BaseType,
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                         SizeInBits, AlignInBits, OffsetInBits, Flags, Elements,
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                         RuntimeLang, VTableHolder, TemplateParams,
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                         getString(Identifier)));
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  Metadata *Ops[] = {File,     Scope,        Name,           BaseType,
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                     Elements, VTableHolder, TemplateParams, Identifier};
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  DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits,
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                                         AlignInBits, OffsetInBits, Flags),
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                       Ops);
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}
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DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context,
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                                            unsigned Flags, Metadata *TypeArray,
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                                            StorageType Storage,
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                                            bool ShouldCreate) {
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  DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, TypeArray));
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  Metadata *Ops[] = {nullptr,   nullptr, nullptr, nullptr,
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                     TypeArray, nullptr, nullptr, nullptr};
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  DEFINE_GETIMPL_STORE(DISubroutineType, (Flags), Ops);
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}
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DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename,
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                        MDString *Directory, StorageType Storage,
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                        bool ShouldCreate) {
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  assert(isCanonical(Filename) && "Expected canonical MDString");
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  assert(isCanonical(Directory) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(DIFile, (getString(Filename), getString(Directory)));
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  Metadata *Ops[] = {Filename, Directory};
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  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIFile, Ops);
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}
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DICompileUnit *DICompileUnit::getImpl(
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    LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
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    MDString *Producer, bool IsOptimized, MDString *Flags,
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    unsigned RuntimeVersion, MDString *SplitDebugFilename,
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    unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
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    Metadata *Subprograms, Metadata *GlobalVariables,
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    Metadata *ImportedEntities, StorageType Storage, bool ShouldCreate) {
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  assert(isCanonical(Producer) && "Expected canonical MDString");
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  assert(isCanonical(Flags) && "Expected canonical MDString");
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  assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(
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      DICompileUnit,
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      (SourceLanguage, File, getString(Producer), IsOptimized, getString(Flags),
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       RuntimeVersion, getString(SplitDebugFilename), EmissionKind, EnumTypes,
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       RetainedTypes, Subprograms, GlobalVariables, ImportedEntities));
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  Metadata *Ops[] = {File, Producer, Flags, SplitDebugFilename, EnumTypes,
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                     RetainedTypes, Subprograms, GlobalVariables,
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                     ImportedEntities};
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  DEFINE_GETIMPL_STORE(
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      DICompileUnit,
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      (SourceLanguage, IsOptimized, RuntimeVersion, EmissionKind), Ops);
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}
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DISubprogram *DILocalScope::getSubprogram() const {
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  if (auto *Block = dyn_cast<DILexicalBlockBase>(this))
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    return Block->getScope()->getSubprogram();
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  return const_cast<DISubprogram *>(cast<DISubprogram>(this));
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}
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DISubprogram *DISubprogram::getImpl(
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    LLVMContext &Context, Metadata *Scope, MDString *Name,
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    MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
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    bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
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    Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
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    unsigned Flags, bool IsOptimized, Metadata *Function,
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    Metadata *TemplateParams, Metadata *Declaration, Metadata *Variables,
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    StorageType Storage, bool ShouldCreate) {
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  assert(isCanonical(Name) && "Expected canonical MDString");
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  assert(isCanonical(LinkageName) && "Expected canonical MDString");
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  DEFINE_GETIMPL_LOOKUP(DISubprogram,
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                        (Scope, getString(Name), getString(LinkageName), File,
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                         Line, Type, IsLocalToUnit, IsDefinition, ScopeLine,
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                         ContainingType, Virtuality, VirtualIndex, Flags,
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                         IsOptimized, Function, TemplateParams, Declaration,
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                         Variables));
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  Metadata *Ops[] = {File,           Scope,       Name,           Name,
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                     LinkageName,    Type,        ContainingType, Function,
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                     TemplateParams, Declaration, Variables};
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  DEFINE_GETIMPL_STORE(DISubprogram,
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                       (Line, ScopeLine, Virtuality, VirtualIndex, Flags,
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                        IsLocalToUnit, IsDefinition, IsOptimized),
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                       Ops);
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}
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Function *DISubprogram::getFunction() const {
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  // FIXME: Should this be looking through bitcasts?
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  return dyn_cast_or_null<Function>(getFunctionConstant());
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}
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bool DISubprogram::describes(const Function *F) const {
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  assert(F && "Invalid function");
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  if (F == getFunction())
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    return true;
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  StringRef Name = getLinkageName();
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  if (Name.empty())
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						|
    Name = getName();
 | 
						|
  return F->getName() == Name;
 | 
						|
}
 | 
						|
 | 
						|
void DISubprogram::replaceFunction(Function *F) {
 | 
						|
  replaceFunction(F ? ConstantAsMetadata::get(F)
 | 
						|
                    : static_cast<ConstantAsMetadata *>(nullptr));
 | 
						|
}
 | 
						|
 | 
						|
DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope,
 | 
						|
                                        Metadata *File, unsigned Line,
 | 
						|
                                        unsigned Column, StorageType Storage,
 | 
						|
                                        bool ShouldCreate) {
 | 
						|
  assert(Scope && "Expected scope");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column));
 | 
						|
  Metadata *Ops[] = {File, Scope};
 | 
						|
  DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context,
 | 
						|
                                                Metadata *Scope, Metadata *File,
 | 
						|
                                                unsigned Discriminator,
 | 
						|
                                                StorageType Storage,
 | 
						|
                                                bool ShouldCreate) {
 | 
						|
  assert(Scope && "Expected scope");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator));
 | 
						|
  Metadata *Ops[] = {File, Scope};
 | 
						|
  DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope,
 | 
						|
                                  Metadata *File, MDString *Name, unsigned Line,
 | 
						|
                                  StorageType Storage, bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, File, getString(Name), Line));
 | 
						|
  Metadata *Ops[] = {File, Scope, Name};
 | 
						|
  DEFINE_GETIMPL_STORE(DINamespace, (Line), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
 | 
						|
                                                          MDString *Name,
 | 
						|
                                                          Metadata *Type,
 | 
						|
                                                          StorageType Storage,
 | 
						|
                                                          bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (getString(Name), Type));
 | 
						|
  Metadata *Ops[] = {Name, Type};
 | 
						|
  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops);
 | 
						|
}
 | 
						|
 | 
						|
DITemplateValueParameter *DITemplateValueParameter::getImpl(
 | 
						|
    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
 | 
						|
    Metadata *Value, StorageType Storage, bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter,
 | 
						|
                        (Tag, getString(Name), Type, Value));
 | 
						|
  Metadata *Ops[] = {Name, Type, Value};
 | 
						|
  DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DIGlobalVariable *
 | 
						|
DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
 | 
						|
                          MDString *LinkageName, Metadata *File, unsigned Line,
 | 
						|
                          Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
 | 
						|
                          Metadata *Variable,
 | 
						|
                          Metadata *StaticDataMemberDeclaration,
 | 
						|
                          StorageType Storage, bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  assert(isCanonical(LinkageName) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DIGlobalVariable,
 | 
						|
                        (Scope, getString(Name), getString(LinkageName), File,
 | 
						|
                         Line, Type, IsLocalToUnit, IsDefinition, Variable,
 | 
						|
                         StaticDataMemberDeclaration));
 | 
						|
  Metadata *Ops[] = {Scope, Name,        File,     Type,
 | 
						|
                     Name,  LinkageName, Variable, StaticDataMemberDeclaration};
 | 
						|
  DEFINE_GETIMPL_STORE(DIGlobalVariable, (Line, IsLocalToUnit, IsDefinition),
 | 
						|
                       Ops);
 | 
						|
}
 | 
						|
 | 
						|
DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, unsigned Tag,
 | 
						|
                                          Metadata *Scope, MDString *Name,
 | 
						|
                                          Metadata *File, unsigned Line,
 | 
						|
                                          Metadata *Type, unsigned Arg,
 | 
						|
                                          unsigned Flags, StorageType Storage,
 | 
						|
                                          bool ShouldCreate) {
 | 
						|
  // 64K ought to be enough for any frontend.
 | 
						|
  assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits");
 | 
						|
 | 
						|
  assert(Scope && "Expected scope");
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DILocalVariable, (Tag, Scope, getString(Name), File,
 | 
						|
                                          Line, Type, Arg, Flags));
 | 
						|
  Metadata *Ops[] = {Scope, Name, File, Type};
 | 
						|
  DEFINE_GETIMPL_STORE(DILocalVariable, (Tag, Line, Arg, Flags), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DIExpression *DIExpression::getImpl(LLVMContext &Context,
 | 
						|
                                    ArrayRef<uint64_t> Elements,
 | 
						|
                                    StorageType Storage, bool ShouldCreate) {
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements));
 | 
						|
  DEFINE_GETIMPL_STORE_NO_OPS(DIExpression, (Elements));
 | 
						|
}
 | 
						|
 | 
						|
unsigned DIExpression::ExprOperand::getSize() const {
 | 
						|
  switch (getOp()) {
 | 
						|
  case dwarf::DW_OP_bit_piece:
 | 
						|
    return 3;
 | 
						|
  case dwarf::DW_OP_plus:
 | 
						|
    return 2;
 | 
						|
  default:
 | 
						|
    return 1;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
bool DIExpression::isValid() const {
 | 
						|
  for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
 | 
						|
    // Check that there's space for the operand.
 | 
						|
    if (I->get() + I->getSize() > E->get())
 | 
						|
      return false;
 | 
						|
 | 
						|
    // Check that the operand is valid.
 | 
						|
    switch (I->getOp()) {
 | 
						|
    default:
 | 
						|
      return false;
 | 
						|
    case dwarf::DW_OP_bit_piece:
 | 
						|
      // Piece expressions must be at the end.
 | 
						|
      return I->get() + I->getSize() == E->get();
 | 
						|
    case dwarf::DW_OP_plus:
 | 
						|
    case dwarf::DW_OP_deref:
 | 
						|
      break;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return true;
 | 
						|
}
 | 
						|
 | 
						|
bool DIExpression::isBitPiece() const {
 | 
						|
  assert(isValid() && "Expected valid expression");
 | 
						|
  if (unsigned N = getNumElements())
 | 
						|
    if (N >= 3)
 | 
						|
      return getElement(N - 3) == dwarf::DW_OP_bit_piece;
 | 
						|
  return false;
 | 
						|
}
 | 
						|
 | 
						|
uint64_t DIExpression::getBitPieceOffset() const {
 | 
						|
  assert(isBitPiece() && "Expected bit piece");
 | 
						|
  return getElement(getNumElements() - 2);
 | 
						|
}
 | 
						|
 | 
						|
uint64_t DIExpression::getBitPieceSize() const {
 | 
						|
  assert(isBitPiece() && "Expected bit piece");
 | 
						|
  return getElement(getNumElements() - 1);
 | 
						|
}
 | 
						|
 | 
						|
DIObjCProperty *DIObjCProperty::getImpl(
 | 
						|
    LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
 | 
						|
    MDString *GetterName, MDString *SetterName, unsigned Attributes,
 | 
						|
    Metadata *Type, StorageType Storage, bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  assert(isCanonical(GetterName) && "Expected canonical MDString");
 | 
						|
  assert(isCanonical(SetterName) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DIObjCProperty,
 | 
						|
                        (getString(Name), File, Line, getString(GetterName),
 | 
						|
                         getString(SetterName), Attributes, Type));
 | 
						|
  Metadata *Ops[] = {Name, File, GetterName, SetterName, Type};
 | 
						|
  DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops);
 | 
						|
}
 | 
						|
 | 
						|
DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag,
 | 
						|
                                            Metadata *Scope, Metadata *Entity,
 | 
						|
                                            unsigned Line, MDString *Name,
 | 
						|
                                            StorageType Storage,
 | 
						|
                                            bool ShouldCreate) {
 | 
						|
  assert(isCanonical(Name) && "Expected canonical MDString");
 | 
						|
  DEFINE_GETIMPL_LOOKUP(DIImportedEntity,
 | 
						|
                        (Tag, Scope, Entity, Line, getString(Name)));
 | 
						|
  Metadata *Ops[] = {Scope, Entity, Name};
 | 
						|
  DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops);
 | 
						|
}
 |