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IR: Split out DebugInfoMetadata.h, NFC

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Move debug-info-centred `Metadata` subclasses into their own
header/source file.  A couple of private template functions are needed
from both `Metadata.cpp` and `DebugInfoMetadata.cpp`, so I've moved them
to `lib/IR/MetadataImpl.h`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227835 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-02-02 18:53:21 +00:00
parent 4502a3c3d2
commit ca8d3bf8af
13 changed files with 357 additions and 284 deletions
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107
lib/IR/Metadata.cpp
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@@ -13,6 +13,7 @@
#include "llvm/IR/Metadata.h"
#include "LLVMContextImpl.h"
#include "MetadataImpl.h"
#include "SymbolTableListTraitsImpl.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
@@ -20,6 +21,7 @@
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
@@ -541,10 +543,6 @@ void MDTuple::recalculateHash() {
setHash(MDTupleInfo::KeyTy::calculateHash(this));
}
void GenericDebugNode::recalculateHash() {
setHash(GenericDebugNodeInfo::KeyTy::calculateHash(this));
}
void MDNode::dropAllReferences() {
for (unsigned I = 0, E = NumOperands; I != E; ++I)
setOperand(I, nullptr);
@@ -615,13 +613,6 @@ void MDNode::deleteAsSubclass() {
}
}
template <class T, class InfoT>
static T *getUniqued(DenseSet<T *, InfoT> &Store,
const typename InfoT::KeyTy &Key) {
auto I = Store.find_as(Key);
return I == Store.end() ? nullptr : *I;
}
template <class T, class InfoT>
static T *uniquifyImpl(T *N, DenseSet<T *, InfoT> &Store) {
if (T *U = getUniqued(Store, N))
@@ -672,21 +663,6 @@ void MDNode::eraseFromStore() {
}
}
template <class T, class StoreT>
T *MDNode::storeImpl(T *N, StorageType Storage, StoreT &Store) {
switch (Storage) {
case Uniqued:
Store.insert(N);
break;
case Distinct:
N->storeDistinctInContext();
break;
case Temporary:
break;
}
return N;
}
MDTuple *MDTuple::getImpl(LLVMContext &Context, ArrayRef<Metadata *> MDs,
StorageType Storage, bool ShouldCreate) {
unsigned Hash = 0;
@@ -705,85 +681,6 @@ MDTuple *MDTuple::getImpl(LLVMContext &Context, ArrayRef<Metadata *> MDs,
Storage, Context.pImpl->MDTuples);
}
MDLocation::MDLocation(LLVMContext &C, StorageType Storage, unsigned Line,
unsigned Column, ArrayRef<Metadata *> MDs)
: MDNode(C, MDLocationKind, Storage, MDs) {
assert((MDs.size() == 1 || MDs.size() == 2) &&
"Expected a scope and optional inlined-at");
// Set line and column.
assert(Line < (1u << 24) && "Expected 24-bit line");
assert(Column < (1u << 16) && "Expected 16-bit column");
SubclassData32 = Line;
SubclassData16 = Column;
}
static void adjustLine(unsigned &Line) {
// Set to unknown on overflow. Still use 24 bits for now.
if (Line >= (1u << 24))
Line = 0;
}
static void adjustColumn(unsigned &Column) {
// Set to unknown on overflow. We only have 16 bits to play with here.
if (Column >= (1u << 16))
Column = 0;
}
MDLocation *MDLocation::getImpl(LLVMContext &Context, unsigned Line,
unsigned Column, Metadata *Scope,
Metadata *InlinedAt, StorageType Storage,
bool ShouldCreate) {
// Fixup line/column.
adjustLine(Line);
adjustColumn(Column);
if (Storage == Uniqued) {
if (auto *N = getUniqued(
Context.pImpl->MDLocations,
MDLocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
return N;
if (!ShouldCreate)
return nullptr;
} else {
assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
}
SmallVector<Metadata *, 2> Ops;
Ops.push_back(Scope);
if (InlinedAt)
Ops.push_back(InlinedAt);
return storeImpl(new (Ops.size())
MDLocation(Context, Storage, Line, Column, Ops),
Storage, Context.pImpl->MDLocations);
}
GenericDebugNode *GenericDebugNode::getImpl(LLVMContext &Context, unsigned Tag,
StringRef Header,
ArrayRef<Metadata *> DwarfOps,
StorageType Storage,
bool ShouldCreate) {
unsigned Hash = 0;
if (Storage == Uniqued) {
GenericDebugNodeInfo::KeyTy Key(Tag, Header, DwarfOps);
if (auto *N = getUniqued(Context.pImpl->GenericDebugNodes, Key))
return N;
if (!ShouldCreate)
return nullptr;
Hash = Key.getHash();
} else {
assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
}
// Use a nullptr for empty headers.
Metadata *PreOps[] = {Header.empty() ? nullptr
: MDString::get(Context, Header)};
return storeImpl(new (DwarfOps.size() + 1) GenericDebugNode(
Context, Storage, Hash, Tag, PreOps, DwarfOps),
Storage, Context.pImpl->GenericDebugNodes);
}
void MDNode::deleteTemporary(MDNode *N) {
assert(N->isTemporary() && "Expected temporary node");
N->replaceAllUsesWith(nullptr);