On 2023-05-08 17:20 Kito Cheng wrote:
>
>-msave-restore is a different story; it's only enabled when the user
>requests, but `-march` describes the capability of the target
>architecture, not specify the preference of performance or size, which
>should be determined by -O1~-O3/-Ofast or -Os/-Oz.
-msave-restore is a different story; it's only enabled when the user
requests, but `-march` describes the capability of the target
architecture, not specify the preference of performance or size, which
should be determined by -O1~-O3/-Ofast or -Os/-Oz.
On Mon, May 8, 2023 at 4:54 PM Fei Gao wrote
On 2023-05-08 16:05 Kito Cheng wrote:
>
>> > diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
>> > index 45a63cab9c9..629e5e45cac 100644
>> > --- a/gcc/config/riscv/riscv.cc
>> > +++ b/gcc/config/riscv/riscv.cc
>> > @@ -5729,7 +5729,8 @@ riscv_get_separate_components (void)
>> >
> > diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
> > index 45a63cab9c9..629e5e45cac 100644
> > --- a/gcc/config/riscv/riscv.cc
> > +++ b/gcc/config/riscv/riscv.cc
> > @@ -5729,7 +5729,8 @@ riscv_get_separate_components (void)
> >
> >if (riscv_use_save_libcall (&cfun->machi
On Sat, May 6, 2023 at 1:41 AM Fei Gao wrote:
>
> zcmp aims to reduce code size, while shrink-wrap-separate prefers
> speed to code size. So disable shrink-wrap-separate if zcmp
> enabled, just like what save-restore has done.
>
> author: Zhangjin Liao liaozhang...@eswincomputing.com
>
> gcc/Chang
On 2023-05-08 10:41 Kito Cheng wrote:
>
>shrink-wraping already gated by Os so I think we don't need add more
>gate here, unless we are trying to claim force optimize for size if
>zcmp is present.
>
hi Kito
Zcmp is added here just like save-restore.
Either we add them both, or delete.
BR,
F
shrink-wraping already gated by Os so I think we don't need add more
gate here, unless we are trying to claim force optimize for size if
zcmp is present.
On Sat, May 6, 2023 at 4:41 PM Fei Gao wrote:
>
> zcmp aims to reduce code size, while shrink-wrap-separate prefers
> speed to code size. So di
zcmp aims to reduce code size, while shrink-wrap-separate prefers
speed to code size. So disable shrink-wrap-separate if zcmp
enabled, just like what save-restore has done.
author: Zhangjin Liao liaozhang...@eswincomputing.com
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_get_separate_co
