https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65067
--- Comment #9 from Tony Liu <tony.liu at arm dot com> --- (In reply to Bernd Edlinger from comment #8) > Created attachment 34955 [details] > Proposed Fix > > Well, I noticed that the first version of this patch caused > a small but measurable decrease of code quality on x86_64, > so I moved the patch to the if (strict_volatile_bitfield_p block, > and used some code transformations to simplify the resulting code > a bit. > > I will post this new version for review, after a full boot-strap > and successful regression-test on my ARM target. I've tested for target Cortex-M3, no regression.