[PATCH] New alias analysis for static global variables

[hfinkel at anl.gov]

In http://reviews.llvm.org/D10059#197018, @samparker wrote:

> http://llvm.org/docs/AliasAnalysis.html#limitations


That's a bit misleading. You can preserve underlying AA passes (although not the AliasAnalysis analysis group itself). The problems is that if *any* pass does not preserve it, it will be invalidated, and nothing will cause it to be regenerated (unless it is inserted again specifically in the pass manager).

The question here is: Do we have *any* passes in-tree that would not preserve the cache trivially?


http://reviews.llvm.org/D10059

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