https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82445
Bug ID: 82445 Summary: ARM target generates unaligned STRD instruction Product: gcc Version: 7.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: agraf at suse dot de CC: rguenth at gcc dot gnu.org Target Milestone: --- Target: ARM Created attachment 42310 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42310&action=edit Reproducer The 32-bit ARM target in gcc generates an STRD instruction at not-multiple-of-8 offsets even with -no-unaligned-access specified. This currently breaks grub on ARM, as it runs with alignment faults enabled. This is also a regression introduced somewhere recently (gcc7?), as I haven't seen these unaligned accesses generated before. I've also attached a small reproducer for the issue.