[llvm-commits] [llvm] r84038 - in /llvm/trunk: lib/Analysis/BasicAliasAnalysis.cpp test/Analysis/BasicAA/phi-aa.ll

Evan Cheng evan.cheng at apple.com
Tue Oct 13 17:56:26 PDT 2009

On Oct 13, 2009, at 3:47 PM, Nick Lewycky wrote:

> Evan, please put a recursion depth limit on the number of PHIs this code is willing to walk backwards through, otherwise pathological code will show n^2 behaviour.

It stops when it sees a PHI source which is itself PHI. That should be sufficient, no?


> Nick

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