Changes in directory llvm/lib/Transforms/Utils:
BreakCriticalEdges.cpp updated: 1.52 -> 1.53
---
Log message:
Do not preserve ETForest.
---
Diffs of the changes: (+5 -26)
BreakCriticalEdges.cpp | 31 +++++--------------------------
1 files changed, 5 insertions(+), 26 deletions(-)
Index: llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
diff -u llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp:1.52
llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp:1.53
--- llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp:1.52 Thu Jun 7
12:47:21 2007
+++ llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp Thu Jun 7 19:02:08 2007
@@ -40,7 +40,6 @@
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.addPreserved<ETForest>();
AU.addPreserved<DominatorTree>();
AU.addPreserved<DominanceFrontier>();
AU.addPreserved<LoopInfo>();
@@ -110,11 +109,11 @@
}
// SplitCriticalEdge - If this edge is a critical edge, insert a new node to
-// split the critical edge. This will update ETForest, ImmediateDominator,
-// DominatorTree, and DominatorFrontier information if it is available, thus
-// calling this pass will not invalidate any of them. This returns true if
-// the edge was split, false otherwise. This ensures that all edges to that
-// dest go to one block instead of each going to a different block.
+// split the critical edge. This will update DominatorTree, and
DominatorFrontier
+// information if it is available, thus calling this pass will not invalidate
+// any of them. This returns true if the edge was split, false otherwise.
+// This ensures that all edges to that dest go to one block instead of each
+// going to a different block.
//
bool llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P,
bool MergeIdenticalEdges) {
@@ -181,26 +180,6 @@
bool NewBBDominatesDestBB = true;
- // Update the forest?
- if (ETForest *EF = P->getAnalysisToUpdate<ETForest>()) {
- // NewBB is dominated by TIBB.
- EF->addNewBlock(NewBB, TIBB);
-
- // If NewBBDominatesDestBB hasn't been computed yet, do so with EF.
- if (!OtherPreds.empty()) {
- while (!OtherPreds.empty() && NewBBDominatesDestBB) {
- NewBBDominatesDestBB = EF->dominates(DestBB, OtherPreds.back());
- OtherPreds.pop_back();
- }
- OtherPreds.clear();
- }
-
- // If NewBBDominatesDestBB, then NewBB dominates DestBB, otherwise it
- // doesn't dominate anything.
- if (NewBBDominatesDestBB)
- EF->setImmediateDominator(DestBB, NewBB);
- }
-
// Should we update DominatorTree information?
if (DominatorTree *DT = P->getAnalysisToUpdate<DominatorTree>()) {
DomTreeNode *TINode = DT->getNode(TIBB);
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