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blockfreq: Encapsulate LoopData::Header

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<rdar://problem/14292693>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207181 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-04-25 04:38:06 +00:00
parent 625063d495
commit 7e26181f6b
2 changed files with 21 additions and 23 deletions
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18
include/llvm/Analysis/BlockFrequencyInfoImpl.h
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@ -956,6 +956,8 @@ public:
LoopData(LoopData *Parent, const BlockNode &Header)
: Parent(Parent), Header(Header), IsPackaged(false) {}
bool isHeader(const BlockNode &Node) const { return Node == Header; }
BlockNode getHeader() const { return Header; }
};
/// \brief Index of loop information.
@ -966,7 +968,7 @@ public:
WorkingData(const BlockNode &Node) : Node(Node), Loop(nullptr) {}
bool isLoopHeader() const { return Loop && Loop->Header == Node; }
bool isLoopHeader() const { return Loop && Loop->isHeader(Node); }
bool hasLoopHeader() const { return isLoopHeader() ? Loop->Parent : Loop; }
LoopData *getContainingLoop() const {
@ -975,7 +977,7 @@ public:
BlockNode getContainingHeader() const {
auto *ContainingLoop = getContainingLoop();
if (ContainingLoop)
return ContainingLoop->Header;
return ContainingLoop->getHeader();
return BlockNode();
}
@ -1491,11 +1493,11 @@ template <class BT> void BlockFrequencyInfoImpl<BT>::computeMassInLoops() {
template <class BT>
void BlockFrequencyInfoImpl<BT>::computeMassInLoop(LoopData &Loop) {
// Compute mass in loop.
DEBUG(dbgs() << "compute-mass-in-loop: " << getBlockName(Loop.Header)
DEBUG(dbgs() << "compute-mass-in-loop: " << getBlockName(Loop.getHeader())
<< "\n");
Working[Loop.Header.Index].Mass = BlockMass::getFull();
propagateMassToSuccessors(&Loop, Loop.Header);
Working[Loop.getHeader().Index].Mass = BlockMass::getFull();
propagateMassToSuccessors(&Loop, Loop.getHeader());
for (const BlockNode &M : Loop.Members)
propagateMassToSuccessors(&Loop, M);
@ -1528,10 +1530,8 @@ BlockFrequencyInfoImpl<BT>::propagateMassToSuccessors(LoopData *OuterLoop,
DEBUG(dbgs() << " - node: " << getBlockName(Node) << "\n");
// Calculate probability for successors.
Distribution Dist;
BlockNode LoopHead;
if (OuterLoop)
LoopHead = OuterLoop->Header;
if (Node != LoopHead && Working[Node.Index].isLoopHeader())
if (Working[Node.Index].isLoopHeader() &&
Working[Node.Index].Loop != OuterLoop)
addLoopSuccessorsToDist(OuterLoop, *Working[Node.Index].Loop, Dist);
else {
const BlockT *BB = getBlock(Node);