Turn this pass ordering:
Natural Loop Information Loop Pass Manager Canonicalize natural loops Scalar Evolution Analysis Loop Pass Manager Induction Variable Users Canonicalize natural loops Induction Variable Users Loop Strength Reduction into this: Scalar Evolution Analysis Loop Pass Manager Canonicalize natural loops Induction Variable Users Loop Strength Reduction This fixes <rdar://problem/8869639>. I also filed PR9184 on doing this sort of thing automatically, but it seems easier to just change the ordering of the passes if this is the only case. llvm-svn: 125254
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@ -3815,15 +3815,15 @@ LoopStrengthReduce::LoopStrengthReduce(const TargetLowering *tli)
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void LoopStrengthReduce::getAnalysisUsage(AnalysisUsage &AU) const {
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// We split critical edges, so we change the CFG. However, we do update
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// many analyses if they are around.
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AU.addPreservedID(LoopSimplifyID);
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AU.addRequired<LoopInfo>();
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AU.addPreserved<LoopInfo>();
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AU.addRequiredID(LoopSimplifyID);
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AU.addRequired<DominatorTree>();
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AU.addPreserved<DominatorTree>();
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AU.addRequired<ScalarEvolution>();
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AU.addPreserved<ScalarEvolution>();
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AU.addRequired<LoopInfo>();
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AU.addPreserved<LoopInfo>();
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AU.addRequiredID(LoopSimplifyID);
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AU.addPreservedID(LoopSimplifyID);
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AU.addRequired<IVUsers>();
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AU.addPreserved<IVUsers>();
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}
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