The following patch uses correct SSE register class; vzeroupper
operates only on lower 16 (8 on 32bit target) SSE registers.
2019-10-08 Uroš Bizjak
PR target/91994
* config/i386/i386.c (x86_avx_u128_mode_needed): Use SSE_REG
instead of ALL_SSE_REG to check if function call preserve
On Wed, Sep 25, 2019 at 5:48 PM Richard Sandiford
wrote:
> > The comment suggests that this code is only needed for Win64 and that
> > not testing for Win64 is just a simplification. But in practice it was
> > needed for correctness on GNU/Linux and other targets too, since without
> > it the RA
On Wed, Sep 25, 2019 at 5:48 PM Richard Sandiford
wrote:
>
> Ping
>
> Richard Sandiford writes:
> > One of the effects of the function_abi series is to make -fipa-ra
> > work for partially call-clobbered registers. E.g. if a call preserves
> > only the low 32 bits of a register R, we handled the
Ping
Richard Sandiford writes:
> One of the effects of the function_abi series is to make -fipa-ra
> work for partially call-clobbered registers. E.g. if a call preserves
> only the low 32 bits of a register R, we handled the partial clobber
> separately from -fipa-ra, and so treated the upper b
One of the effects of the function_abi series is to make -fipa-ra
work for partially call-clobbered registers. E.g. if a call preserves
only the low 32 bits of a register R, we handled the partial clobber
separately from -fipa-ra, and so treated the upper bits of R as
clobbered even if we knew tha
