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Tweak debug output. No functional changes. 

llvm-svn: 127006
This commit is contained in:
Jakob Stoklund Olesen 2011-03-04 18:08:26 +00:00
parent db93ddb41b
commit d4f788952d
2 changed files with 6 additions and 10 deletions
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7
llvm/lib/CodeGen/RegAllocGreedy.cpp
View File

@ -627,7 +627,12 @@ float RAGreedy::calcGlobalSplitCost(const BitVector &LiveBundles) {
if (Inserts)
GlobalCost += Inserts * SpillPlacer->getBlockFrequency(BC.Number);
}
DEBUG(dbgs() << "Global cost = " << GlobalCost << '\n');
DEBUG({
dbgs() << "Global cost = " << GlobalCost << " with bundles";
for (int i = LiveBundles.find_first(); i>=0; i = LiveBundles.find_next(i))
dbgs() << " EB#" << i;
dbgs() << ".\n";
});
return GlobalCost;
}

9
llvm/lib/CodeGen/SplitKit.cpp
View File

@ -314,8 +314,6 @@ void SplitEditor::extendRange(unsigned RegIdx, SlotIndex Idx) {
// and we may need to create even more phi-defs to preserve VNInfo SSA form.
// Perform a search for all predecessor blocks where we know the dominating
// 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');
// Initialize the live-out cache the first time it is needed.
if (LiveOutSeen.empty()) {
@ -413,7 +411,6 @@ VNInfo *SplitEditor::updateSSA(unsigned RegIdx,
unsigned Changes;
do {
Changes = 0;
DEBUG(dbgs() << " Iterating over " << LiveIn.size() << " blocks.\n");
// Propagate live-out values down the dominator tree, inserting phi-defs
// when necessary. Since LiveIn was created by a BFS, going backwards makes
// it more likely for us to visit immediate dominators before their
@ -454,8 +451,6 @@ VNInfo *SplitEditor::updateSSA(unsigned RegIdx,
SlotIndex Start = LIS.getMBBStartIdx(MBB);
VNInfo *VNI = LI->getNextValue(Start, 0, LIS.getVNInfoAllocator());
VNI->setIsPHIDef(true);
DEBUG(dbgs() << " - BB#" << MBB->getNumber()
<< " phi-def #" << VNI->id << " at " << Start << '\n');
// We no longer need LI to be live-in.
LiveIn.erase(LiveIn.begin()+(i-1));
// Blocks in LiveIn are either IdxMBB, or have a value live-through.
@ -487,13 +482,9 @@ VNInfo *SplitEditor::updateSSA(unsigned RegIdx,
if (LOP.second != Node && LOP.first != IDomValue.first) {
++Changes;
LOP = IDomValue;
DEBUG(dbgs() << " - BB#" << MBB->getNumber()
<< " idom valno #" << IDomValue.first->id
<< " from BB#" << IDom->getBlock()->getNumber() << '\n');
}
}
}
DEBUG(dbgs() << " - made " << Changes << " changes.\n");
} while (Changes);
assert(IdxVNI && "Didn't find value for Idx");