Florian Hahn b54a78d69b
[LV,LAA] Don't vectorize loops with load and store to invar address.
Code checking stores to invariant addresses and reductions made an
incorrect assumption that the case of both a load & store to the same
invariant address does not need to be handled.

In some cases when vectorizing with runtime checks, there may be
dependences with a load and store to the same address, storing a
reduction value.

Update LAA to separately track if there was a store-store and a
load-store dependence with an invariant addresses.

Bail out early if there as a load-store dependence with invariant
address. If there was a store-store one, still apply the logic checking
if they all store a reduction.
2024-05-04 20:53:54 +01:00
..
2023-09-04 09:17:18 +01:00