Hello, Some of our target processors support complete hardware misaligned memory access. I implemented movmisalignm patterns, and found TARGET_SUPPORT_VECTOR_MISALIGNMENT (TARGET_VECTORIZE_SUPPORT_VECTOR_MISALIGNMENT On 4.6) hook is based on checking these patterns. Somehow this hook doesn't seem to be used. vect_enhance_data_refs_alignment is called regardless whether the target has HW misaligned support or not.
Shouldn't using HW misaligned memory access be better than generating extra code for loop peeling/versioning? Or at least if for some architectures it is not the case, we should have a compiler hook to choose between them. BTW, I mainly work on 4.5, maybe 4.6 has changed. Thanks, Bingfeng Mei
