From: George Burgess IV <george.burgess.iv@gmail.com>
Date: Thu, 21 Jul 2016 21:09:24 +0000 (+0000)
Subject: [MSSA] Fix PR28632 in the 3.9 branch.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e41f8904d335aa83309beb9d00595edf873c9663;p=llvm

[MSSA] Fix PR28632 in the 3.9 branch.

The now-removed assertion was really more for initial debugging; it's
perfectly valid (albeit relatively rare) for `Q.Visited.size()` to be
greater than 1,000. A similar patch hasn't been applied to trunk
because the piece of code this assertion was a part of no longer exists
in trunk.

Fix okayed by Danny, merge to 3.9 okayed by Hans.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_39@276337 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/MemorySSA.cpp b/lib/Transforms/Utils/MemorySSA.cpp
index f93917f9861..8ba3cae43b1 100644
--- a/lib/Transforms/Utils/MemorySSA.cpp
+++ b/lib/Transforms/Utils/MemorySSA.cpp
@@ -1225,7 +1225,6 @@ MemoryAccessPair MemorySSA::CachingWalker::UpwardsDFSWalk(
     MemoryAccess *CacheAccess = DFI.getPath(N - 1);
     doCacheInsert(CacheAccess, ModifyingAccess, Q, Loc);
   }
-  assert(Q.Visited.size() < 1000 && "Visited too much");
 
   return {ModifyingAccess, Loc};
 }