[PATCH] D29092: PR31729: [GVNHoist] Don't hoist unsafe scalars at -Oz
Aditya Kumar via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 23 16:28:35 PST 2017
hiraditya added a comment.
In https://reviews.llvm.org/D29092#685046, @mehdi_amini wrote:
> I'd add also that `isSafeToSpeculativelyExecute` may be conservative right now, but it should improve with https://reviews.llvm.org/D20116
> So it is even unclear to me which cases GVN hoist would be able to catch that are not in the realm of `isSafeToSpeculativelyExecute`.
Currently `isSafeToSpeculativelyExecute` returns false for Calls, stores. GVN Hoist will hoist them if it is legal to do so.
https://reviews.llvm.org/D29092
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