[LLVMdev] SCEV Alias Analysis

[Raphael Ernani Rodrigues]

Dear LLVMers,

I am looking into the passes that clang uses by default (using only the
flags -O0, -O1, -O2, -O3) and I noticed that the pass scev-aa
(ScalarEvolution-based Alias Analysis) is not being used in any of those
options.The pass scev, however, is executed with the optimization levels
-O1, -O2, and -O3.

Does anybody know the reason why scev-aa is not included? Does it make the
compilation too slow? Is the pass buggy?

Thanks in advance,

Raphael Ernani Rodrigues
PhD student, University of Alberta
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