https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69454
--- Comment #20 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Ilya Enkovich from comment #19) > (In reply to H.J. Lu from comment #17) > > Do you have a testcase to show that you need to realign stack for STV? > > Reproducer for this tracker is such test, right? Not really. We only ask for 128-bit aligned stack only if we have 128-bit aligned variable on stack. Please do # git grep stack_alignment_needed to see how stack alignment is tracked.