https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101908
--- Comment #41 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Richard Biener from comment #22) > (In reply to Hongtao.liu from comment #21) > > Now we have SLP node available in vector cost hook, maybe we can do sth in > > cost model to prevent vectorization when node's definition from big-size > > parameter. > > Note we vectorize a load here for which we do not pass down an SLP node. > But of course there's the stmt-info one could look at - but the issue > is that for SLP that doesn't tell you which part of the variable is accessed. > Also even if we were to pass down the SLP node we do not know exactly how > it is going to vectorize - but sure, we could play with some heuristics Then, we can't get exact offset between load address and store address.
