Reorder the contents of various getAnalysisUsage functions, eliminating
a redundant loopsimplify run from the default -O2 sequence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108539 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp
index e90c30b..5967cb9 100644
--- a/lib/Transforms/Utils/LCSSA.cpp
+++ b/lib/Transforms/Utils/LCSSA.cpp
@@ -64,22 +64,18 @@
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
+ AU.addRequiredTransitive<DominatorTree>();
+ AU.addPreserved<DominatorTree>();
+ AU.addPreserved<DominanceFrontier>();
+ AU.addRequiredTransitive<LoopInfo>();
+ AU.addPreserved<LoopInfo>();
+
// LCSSA doesn't actually require LoopSimplify, but the PassManager
// doesn't know how to schedule LoopSimplify by itself.
AU.addRequiredID(LoopSimplifyID);
AU.addPreservedID(LoopSimplifyID);
- AU.addRequiredTransitive<LoopInfo>();
- AU.addPreserved<LoopInfo>();
- AU.addRequiredTransitive<DominatorTree>();
- AU.addPreserved<ScalarEvolution>();
- AU.addPreserved<DominatorTree>();
- // Request DominanceFrontier now, even though LCSSA does
- // not use it. This allows Pass Manager to schedule Dominance
- // Frontier early enough such that one LPPassManager can handle
- // multiple loop transformation passes.
- AU.addRequired<DominanceFrontier>();
- AU.addPreserved<DominanceFrontier>();
+ AU.addPreserved<ScalarEvolution>();
}
private:
bool ProcessInstruction(Instruction *Inst,