[PATCH] D64896: Make DT a transitive dependency of LI.

[Evgenii Stepanov via Phabricator via llvm-commits]

eugenis created this revision.
eugenis added reviewers: pcc, leonardchan.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

LoopInfoWrapperPass::verify uses DT, which means DT must be alive
even if it has no direct users.

Fixes a crash in expensive checks mode.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D64896

Files:
  llvm/lib/Analysis/LoopInfo.cpp


Index: llvm/lib/Analysis/LoopInfo.cpp
===================================================================
--- llvm/lib/Analysis/LoopInfo.cpp
+++ llvm/lib/Analysis/LoopInfo.cpp
@@ -1039,7 +1039,7 @@
 
 void LoopInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
-  AU.addRequired<DominatorTreeWrapperPass>();
+  AU.addRequiredTransitive<DominatorTreeWrapperPass>();
 }
 
 void LoopInfoWrapperPass::print(raw_ostream &OS, const Module *) const {


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