Johannes Doerfert 95f415bd34 [Attributor] Delete dead stores ... D106185 allows us to determine if a store is needed easily. Using that knowledge we can start to delete dead stores. In AAIsDead we now track more state as an instruction can be dead (= the old optimisitc state) or just "removable". A store instruction can be removable while being very much alive, e.g., if it stores a constant into an alloca or internal global. If we would pretend it was dead instead of only removablewe we would ignore it when we determine what values a load can see, so that is not what we want. Differential Revision: https://reviews.llvm.org/D106188		2021-07-26 23:33:36 -05:00
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llvm	[Attributor] Delete dead stores	2021-07-26 23:33:36 -05:00
llvm-c	[IR] Rename comdat noduplicates to comdat nodeduplicate	2021-07-20 12:47:10 -07:00