https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103439
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to rguent...@suse.de from comment #2) > On Fri, 26 Nov 2021, ubizjak at gmail dot com wrote: > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103439 > > > > --- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> --- > > (In reply to Richard Biener from comment #0) > > > I'm not sure if there are valid cases where we have a mix of a direct > > > RTL pattern and manual expansion, so where the { } part falls thru. > > > > Yes, we have quite some of them in e.g. i386.md, movstrict<mode>, > > extv<mode>, > > extzv<mode>, insv<mode> and zero_extend expanders are some of them. > > OK, so that's conditional FAILs. I've not yet found a conditional > DONE that eventually falls through to a "DONE via the pattern". Look at zero_extend and extend expanders.