I saw one regression with this patch: PASS-FAIL: gcc.dg/torture/vshuf-v8qi.c -O2 execution test
Could you confirm this? Note: I'm testing with your other (pre-2018 at least) patches applied at the same time (smax etc, anddi, bswaphi) so it might be an interaction, but the code looks like a movdi bug. The other patches look OK otherwise.
