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Add LiveIntervalMap::dumpCache() to print out the cache used by the ssa update algorithm.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123925 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-01-20 17:45:20 +00:00
parent 6b3a999f22
commit d7ca57705e
2 changed files with 24 additions and 0 deletions
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21
lib/CodeGen/SplitKit.cpp
View File

@ -449,6 +449,7 @@ VNInfo *LiveIntervalMap::mapValue(const VNInfo *ParentVNI, SlotIndex Idx,
// VNInfo. Insert phi-def VNInfos along the path back to IdxMBB.
DEBUG(dbgs() << "\n Reaching defs for BB#" << IdxMBB->getNumber()
<< " at " << Idx << " in " << *li_ << '\n');
DEBUG(dumpCache());
// Blocks where li_ should be live-in.
SmallVector<MachineDomTreeNode*, 16> LiveIn;
@ -586,6 +587,7 @@ VNInfo *LiveIntervalMap::mapValue(const VNInfo *ParentVNI, SlotIndex Idx,
assert(IdxVNI && "Didn't find value for Idx");
#ifndef NDEBUG
DEBUG(dumpCache());
// Check the liveOutCache_ invariants.
for (LiveOutMap::iterator I = liveOutCache_.begin(), E = liveOutCache_.end();
I != E; ++I) {
@ -620,6 +622,25 @@ VNInfo *LiveIntervalMap::mapValue(const VNInfo *ParentVNI, SlotIndex Idx,
return IdxVNI;
}
#ifndef NDEBUG
void LiveIntervalMap::dumpCache() {
for (LiveOutMap::iterator I = liveOutCache_.begin(), E = liveOutCache_.end();
I != E; ++I) {
assert(I->first && "Null MBB entry in cache");
assert(I->second.first && "Null VNInfo in cache");
assert(I->second.second && "Null DomTreeNode in cache");
dbgs() << " cache: BB#" << I->first->getNumber()
<< " has valno #" << I->second.first->id << " from BB#"
<< I->second.second->getBlock()->getNumber() << ", preds";
for (MachineBasicBlock::pred_iterator PI = I->first->pred_begin(),
PE = I->first->pred_end(); PI != PE; ++PI)
dbgs() << " BB#" << (*PI)->getNumber();
dbgs() << '\n';
}
dbgs() << " cache: " << liveOutCache_.size() << " entries.\n";
}
#endif
// extendTo - Find the last li_ value defined in MBB at or before Idx. The
// parentli_ is assumed to be live at Idx. Extend the live range to Idx.
// Return the found VNInfo, or NULL.

3
lib/CodeGen/SplitKit.h
View File

@ -216,6 +216,9 @@ class LiveIntervalMap {
// The cache is also used as a visiteed set by mapValue().
LiveOutMap liveOutCache_;
// Dump the live-out cache to dbgs().
void dumpCache();
public:
LiveIntervalMap(LiveIntervals &lis,
MachineDominatorTree &mdt,