On Thu, Feb 17, 2022 at 9:47 PM Richard Biener via Gcc-patches
wrote:
>
> The x86 backend piggy-backs on mode-switching for insertion of
> vzeroupper. A recent improvement there was implemented in a way
> to walk possibly the whole basic-block for all DF reg def definitions
> in its mode_needed h
The x86 backend piggy-backs on mode-switching for insertion of
vzeroupper. A recent improvement there was implemented in a way
to walk possibly the whole basic-block for all DF reg def definitions
in its mode_needed hook which is called for each instruction in
a basic-block during mode-switching l
