[PATCH] D78804: [LICM] Precompute memory writers for AST aliasing analysis

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev added a comment.

Regarding MSSA: in my setup (we use custom pipeline, LICM takes ~8% total time) this patch gives 1% total and mean compile time decrease on workload (approx. 12.5% of LICM time). Turning on MSSA for all loop passes causes ~6% total and mean compile time increase. MSSA doesn't give any performance gains on my test. However I am not sure how representative this workload is, we might have gains in some other case.


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https://reviews.llvm.org/D78804