> Attached patch fixes PR 59021, where new vzeroupper instructions are > generated for -mavx after Vlad's useless insn removal patch. > > The problem was, that we depent on (useless) moves to AVX256 function > argument registers in front of the function call to switch the mode to > DIRTY mode. This is not true anymore, so call_insn has to switch to > DIRTY mode by itself.
Thanks for fixing this! > The patch will be backported to 4.7 and 4.8 branch in a couple of days. The 4.7 branch uses a different mechanism so I'm not sure that's needed. -- Eric Botcazou
