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blockfreq: Use a pointer for ContainingLoop too

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2014-04-22 03:31:44 +00:00
parent 92897fda32
commit 40a483e980
2 changed files with 25 additions and 16 deletions
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23
include/llvm/Analysis/BlockFrequencyInfoImpl.h
View File

@ -958,16 +958,25 @@ public:
/// \brief Index of loop information.
struct WorkingData {
LoopData *Loop; ///< The loop this block is the header of.
BlockNode ContainingLoop; ///< The block whose loop this block is inside.
bool IsPackaged; ///< Has ContainingLoop been packaged up?
LoopData *ContainingLoop; ///< The block whose loop this block is inside.
BlockMass Mass; ///< Mass distribution from the entry block.
WorkingData() : Loop(nullptr), IsPackaged(false) {}
WorkingData() : Loop(nullptr), ContainingLoop(nullptr) {}
bool hasLoopHeader() const { return ContainingLoop.isValid(); }
bool hasLoopHeader() const { return ContainingLoop; }
bool isLoopHeader() const { return Loop; }
/// \brief Has this block's loop been packaged up?
BlockNode getContainingHeader() const {
if (ContainingLoop)
return ContainingLoop->Header;
return BlockNode();
}
/// \brief Has ContainingLoop been packaged up?
bool isPackaged() const {
return ContainingLoop && ContainingLoop->IsPackaged;
}
/// \brief Has Loop been packaged up?
bool isAPackage() const { return Loop && Loop->IsPackaged; }
};
@ -1041,7 +1050,7 @@ public:
/// \brief Loop data: see initializeLoops().
std::vector<WorkingData> Working;
/// \brief Indexed information about packaged loops.
/// \brief Indexed information about loops.
std::vector<std::unique_ptr<LoopData>> PackagedLoops;
/// \brief Add all edges out of a packaged loop to the distribution.
@ -1452,7 +1461,7 @@ template <class BT> void BlockFrequencyInfoImpl<BT>::initializeLoops() {
const auto &HeaderData = Working[Header.Index];
assert(HeaderData.isLoopHeader());
Working[Index].ContainingLoop = Header;
Working[Index].ContainingLoop = HeaderData.Loop;
HeaderData.Loop->Members.push_back(Index);
DEBUG(dbgs() << " - loop = " << getBlockName(Header)
<< ": member = " << getBlockName(Index) << "\n");

18
lib/Analysis/BlockFrequencyInfoImpl.cpp
View File

@ -630,11 +630,11 @@ static void cleanup(BlockFrequencyInfoImplBase &BFI) {
static BlockNode getPackagedNode(const BlockFrequencyInfoImplBase &BFI,
const BlockNode &Node) {
assert(Node.isValid());
if (!BFI.Working[Node.Index].IsPackaged)
if (!BFI.Working[Node.Index].isPackaged())
return Node;
if (!BFI.Working[Node.Index].ContainingLoop.isValid())
if (!BFI.Working[Node.Index].isAPackage())
return Node;
return getPackagedNode(BFI, BFI.Working[Node.Index].ContainingLoop);
return getPackagedNode(BFI, BFI.Working[Node.Index].getContainingHeader());
}
/// \brief Get the appropriate mass for a possible pseudo-node loop package.
@ -645,7 +645,7 @@ static BlockNode getPackagedNode(const BlockFrequencyInfoImplBase &BFI,
static BlockMass &getPackageMass(BlockFrequencyInfoImplBase &BFI,
const BlockNode &Node) {
assert(Node.isValid());
assert(!BFI.Working[Node.Index].IsPackaged);
assert(!BFI.Working[Node.Index].isPackaged());
if (!BFI.Working[Node.Index].isAPackage())
return BFI.Working[Node.Index].Mass;
@ -681,7 +681,7 @@ void BlockFrequencyInfoImplBase::addToDist(Distribution &Dist,
BlockNode Resolved = getPackagedNode(*this, Succ);
assert(Resolved != LoopHead);
if (Working[Resolved.Index].ContainingLoop != LoopHead) {
if (Working[Resolved.Index].getContainingHeader() != LoopHead) {
DEBUG(debugSuccessor(" exit ", Resolved));
Dist.addExit(Resolved, Weight);
return;
@ -746,10 +746,10 @@ void BlockFrequencyInfoImplBase::packageLoop(const BlockNode &LoopHead) {
DEBUG(dbgs() << "packaging-loop: " << getBlockName(LoopHead) << "\n");
auto &PackagedLoop = getLoopPackage(LoopHead);
PackagedLoop.IsPackaged = true;
for (const BlockNode &M : PackagedLoop.Members) {
DEBUG(dbgs() << " - node: " << getBlockName(M.Index) << "\n");
Working[M.Index].IsPackaged = true;
}
DEBUG(for (const BlockNode &M
: PackagedLoop.Members) {
dbgs() << " - node: " << getBlockName(M.Index) << "\n";
});
}
void BlockFrequencyInfoImplBase::distributeMass(const BlockNode &Source,