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Add range iterators for post order and inverse post order. Use them

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Berlin
2015-04-15 17:41:42 +00:00
parent 7f5438e2ca
commit 7871b86660
8 changed files with 47 additions and 37 deletions
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16
lib/CodeGen/MachineTraceMetrics.cpp
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@ -463,13 +463,11 @@ void MachineTraceMetrics::Ensemble::computeTrace(const MachineBasicBlock *MBB) {
// Run an upwards post-order search for the trace start.
Bounds.Downward = false;
Bounds.Visited.clear();
typedef ipo_ext_iterator<const MachineBasicBlock*, LoopBounds> UpwardPO;
for (UpwardPO I = ipo_ext_begin(MBB, Bounds), E = ipo_ext_end(MBB, Bounds);
I != E; ++I) {
for (auto I : inverse_post_order_ext(MBB, Bounds)) {
DEBUG(dbgs() << " pred for BB#" << I->getNumber() << ": ");
TraceBlockInfo &TBI = BlockInfo[I->getNumber()];
// All the predecessors have been visited, pick the preferred one.
TBI.Pred = pickTracePred(*I);
TBI.Pred = pickTracePred(I);
DEBUG({
if (TBI.Pred)
dbgs() << "BB#" << TBI.Pred->getNumber() << '\n';
@ -477,19 +475,17 @@ void MachineTraceMetrics::Ensemble::computeTrace(const MachineBasicBlock *MBB) {
dbgs() << "null\n";
});
// The trace leading to I is now known, compute the depth resources.
computeDepthResources(*I);
computeDepthResources(I);
}
// Run a downwards post-order search for the trace end.
Bounds.Downward = true;
Bounds.Visited.clear();
typedef po_ext_iterator<const MachineBasicBlock*, LoopBounds> DownwardPO;
for (DownwardPO I = po_ext_begin(MBB, Bounds), E = po_ext_end(MBB, Bounds);
I != E; ++I) {
for (auto I : post_order_ext(MBB, Bounds)) {
DEBUG(dbgs() << " succ for BB#" << I->getNumber() << ": ");
TraceBlockInfo &TBI = BlockInfo[I->getNumber()];
// All the successors have been visited, pick the preferred one.
TBI.Succ = pickTraceSucc(*I);
TBI.Succ = pickTraceSucc(I);
DEBUG({
if (TBI.Succ)
dbgs() << "BB#" << TBI.Succ->getNumber() << '\n';
@ -497,7 +493,7 @@ void MachineTraceMetrics::Ensemble::computeTrace(const MachineBasicBlock *MBB) {
dbgs() << "null\n";
});
// The trace leaving I is now known, compute the height resources.
computeHeightResources(*I);
computeHeightResources(I);
}
}