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Use ETForest instead of DominatorTree.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36252 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2007-04-18 05:25:43 +00:00
parent 9e7919785e
commit fb4b3d117f
1 changed files with 11 additions and 11 deletions
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22
lib/Transforms/Scalar/CorrelatedExprs.cpp
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@ -224,14 +224,12 @@ namespace {
std::map<Value*, unsigned> RankMap;
std::map<BasicBlock*, RegionInfo> RegionInfoMap;
ETForest *EF;
DominatorTree *DT;
public:
virtual bool runOnFunction(Function &F);
// We don't modify the program, so we preserve all analyses
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<ETForest>();
AU.addRequired<DominatorTree>();
AU.addRequiredID(BreakCriticalEdgesID);
};
@ -302,7 +300,6 @@ bool CEE::runOnFunction(Function &F) {
// tree. Note that our traversal will not even touch unreachable basic
// blocks.
EF = &getAnalysis<ETForest>();
DT = &getAnalysis<DominatorTree>();
std::set<BasicBlock*> VisitedBlocks;
bool Changed = TransformRegion(&F.getEntryBlock(), VisitedBlocks);
@ -349,14 +346,16 @@ bool CEE::TransformRegion(BasicBlock *BB, std::set<BasicBlock*> &VisitedBlocks){
// blocks that are dominated by this one, we can safely propagate the
// information down now.
//
DominatorTree::Node *BBN = (*DT)[BB];
if (!RI.empty()) // Time opt: only propagate if we can change something
for (unsigned i = 0, e = BBN->getChildren().size(); i != e; ++i) {
BasicBlock *Dominated = BBN->getChildren()[i]->getBlock();
assert(RegionInfoMap.find(Dominated) == RegionInfoMap.end() &&
std::vector<BasicBlock*> children;
EF->getChildren(BB, children);
if (!RI.empty()) { // Time opt: only propagate if we can change something
for (std::vector<BasicBlock*>::iterator CI = children.begin(), E = children.end();
CI != E; ++CI) {
assert(RegionInfoMap.find(*CI) == RegionInfoMap.end() &&
"RegionInfo should be calculated in dominanace order!");
getRegionInfo(Dominated) = RI;
getRegionInfo(*CI) = RI;
}
}
// Now that all of our successors have information if they deserve it,
// propagate any information our terminator instruction finds to our
@ -379,8 +378,9 @@ bool CEE::TransformRegion(BasicBlock *BB, std::set<BasicBlock*> &VisitedBlocks){
}
// Now that all of our successors have information, recursively process them.
for (unsigned i = 0, e = BBN->getChildren().size(); i != e; ++i)
Changed |= TransformRegion(BBN->getChildren()[i]->getBlock(),VisitedBlocks);
for (std::vector<BasicBlock*>::iterator CI = children.begin(), E = children.end();
CI != E; ++CI)
Changed |= TransformRegion(*CI, VisitedBlocks);
return Changed;
}