[Bug target/59371] [9/10/11/12 Regression] Performance regression in GCC 4.8/9/10/11/12 and later versions.

2021-06-01 Thread rguenth at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59371 Richard Biener changed: What|Removed |Added Target Milestone|9.4 |9.5 --- Comment #29 from Richard

[Bug target/59371] [9/10/11/12 Regression] Performance regression in GCC 4.8/9/10/11/12 and later versions.

2021-05-16 Thread guojiufu at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59371 --- Comment #28 from Jiu Fu Guo --- If change code as below, 'i' is not starting from '0', and 'compare code' is '!=' then wrap/overflow on 'i' may happen, and optimizations (e.g. vectorization) are not applied. The below patch is trying to

[Bug target/59371] [9/10/11/12 Regression] Performance regression in GCC 4.8/9/10/11/12 and later versions.

2021-05-16 Thread guojiufu at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59371 Jiu Fu Guo changed: What|Removed |Added CC||guojiufu at gcc dot gnu.org --- Comment

[Bug target/59371] [9/10/11/12 Regression] Performance regression in GCC 4.8/9/10/11/12 and later versions.

2021-05-14 Thread jakub at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59371 Jakub Jelinek changed: What|Removed |Added Target Milestone|8.5 |9.4 --- Comment #26 from Jakub Jelinek