https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84508
--- Comment #26 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- (In reply to Hongtao Liu from comment #25) > (In reply to Peter Cordes from comment #22) > > Why are we adding an alignment requirement to _mm_storel_pd, the intrinsic > > for MOVLPD? > > > From Intel intrinsic guide[1], there's explict "mem_addr does not need to be > aligned on any particular boundary" for mm_store_sd, but not for > _mm_storel_pd. > [1] https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html > But for mm_loadl_pd, it also says no need for alignment, I need to confirm with my peers if there's any specific purpose on that. And yes, for <16-byte memory access, there's no alignment requirement functionally.
