[RFC] Overflow check in simplifying exit cond comparing two IVs.

With reference the discussions in: https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html https://gcc.gnu.org/pipermail/gcc-patches/2021-June/572006.html https://gcc.gnu.org/pipermail/gcc-patches/2021-September/578672.html Base on the patches in above discussion, we may draft a patch to f

Re: [RFC] Overflow check in simplifying exit cond comparing two IVs.

I just had a test on ppc64le, this patch pass bootstrap and regtest. Is this patch OK for trunk? Thanks for any comments. BR, Jiufu On 2021-10-18 21:37, Jiufu Guo wrote: With reference the discussions in: https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html https://gcc.gnu.org/pip

Re: [RFC] Overflow check in simplifying exit cond comparing two IVs.

On Mon, 18 Oct 2021, Jiufu Guo wrote: > With reference the discussions in: > https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html > https://gcc.gnu.org/pipermail/gcc-patches/2021-June/572006.html > https://gcc.gnu.org/pipermail/gcc-patches/2021-September/578672.html > > Base on the pat

Re: [RFC] Overflow check in simplifying exit cond comparing two IVs.

Richard Biener writes: > On Mon, 18 Oct 2021, Jiufu Guo wrote: > >> With reference the discussions in: >> https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html >> https://gcc.gnu.org/pipermail/gcc-patches/2021-June/572006.html >> https://gcc.gnu.org/pipermail/gcc-patches/2021-September/

Re: [RFC] Overflow check in simplifying exit cond comparing two IVs.

Jiufu Guo writes: > Richard Biener writes: > >> On Mon, 18 Oct 2021, Jiufu Guo wrote: >> >>> With reference the discussions in: >>> https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html >>> https://gcc.gnu.org/pipermail/gcc-patches/2021-June/572006.html >>> https://gcc.gnu.org/pipermai

Re: [RFC] Overflow check in simplifying exit cond comparing two IVs.

Jiufu Guo writes: > Jiufu Guo writes: > >> Richard Biener writes: >> >>> On Mon, 18 Oct 2021, Jiufu Guo wrote: >>> With reference the discussions in: https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574334.html https://gcc.gnu.org/pipermail/gcc-patches/2021-June/572006.html >>