LSR: fix IVUsers isSimplifiedLoopNest to perform a full domtree walk
authorAndrew Trick <atrick@apple.com>
Tue, 20 Mar 2012 21:24:40 +0000 (21:24 +0000)
committerAndrew Trick <atrick@apple.com>
Tue, 20 Mar 2012 21:24:40 +0000 (21:24 +0000)
instead of skipping the current loop.

My prior fix was incomplete because of an overzealous compile-time optimization:
Better fix for: <rdar://problem/11049788> Segmentation fault: 11 in LoopStrengthReduce

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153131 91177308-0d34-0410-b5e6-96231b3b80d8


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