[PATCH] D124439: [JumpThreading][NFC][CompileTime] Reuse existing LoopInfo instead of recomputation

[Nikita Popov via Phabricator via llvm-commits]

nikic added inline comments.


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Comment at: llvm/lib/Transforms/Scalar/JumpThreading.cpp:327
   if (F.hasProfileData()) {
-    LoopInfo LI{DominatorTree(F)};
-    BPI.reset(new BranchProbabilityInfo(F, LI, TLI));
-    BFI.reset(new BlockFrequencyInfo(F, *BPI, LI));
+    auto LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
+    BPI.reset(new BranchProbabilityInfo(F, *LI, TLI));
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You'd have to also register it with AnalysisUses and initialize a pass dependency. I'd suggest to leave the LegacyPM implementation alone.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124439/new/

https://reviews.llvm.org/D124439