[llvm] r366388 - Make DT a transitive dependency of LI.

[Evgeniy Stepanov via llvm-commits]

Author: eugenis
Date: Wed Jul 17 16:31:59 2019
New Revision: 366388

URL: http://llvm.org/viewvc/llvm-project?rev=366388&view=rev
Log:
Make DT a transitive dependency of LI.

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

Fixes a crash in expensive checks mode.

Reviewers: pcc, leonardchan

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64896

Modified:
    llvm/trunk/lib/Analysis/LoopInfo.cpp

Modified: llvm/trunk/lib/Analysis/LoopInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopInfo.cpp?rev=366388&r1=366387&r2=366388&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/LoopInfo.cpp (original)
+++ llvm/trunk/lib/Analysis/LoopInfo.cpp Wed Jul 17 16:31:59 2019
@@ -1039,7 +1039,7 @@ void LoopInfoWrapperPass::verifyAnalysis
 
 void LoopInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
-  AU.addRequired<DominatorTreeWrapperPass>();
+  AU.addRequiredTransitive<DominatorTreeWrapperPass>();
 }
 
 void LoopInfoWrapperPass::print(raw_ostream &OS, const Module *) const {