subject:"\[Bug target\/101891\] Adjust \-fzero\-call\-used\-regs to always use XOR"

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread arjan at linux dot intel.com via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #9 from Arjan van de Ven --- I don't have recent measurements since we did this work quite some time ago. basically on the CPU level (speaking for Intel style cpus at least), a CPU can eliminate (meaning: no execution resources used

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread qing.zhao at oracle dot com via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #8 from Qing Zhao --- > On May 24, 2022, at 11:42 AM, arjan at linux dot intel.com > wrote: > > --- Comment #7 from Arjan van de Ven --- > from a performance angle, the xor-only sequence is not so great at all; modern > CPUs are

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread arjan at linux dot intel.com via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 Arjan van de Ven changed: What|Removed |Added CC||arjan at linux dot intel.com --- Com

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread qinzhao at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 qinzhao at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread cvs-commit at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #5 from CVS Commits --- The releases/gcc-11 branch has been updated by Qing Zhao : https://gcc.gnu.org/g:c8d636cbe38b6a369528f58227c96b2b77b1fd3a commit r11-10029-gc8d636cbe38b6a369528f58227c96b2b77b1fd3a Author: Qing Zhao Date:

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-24 Thread cvs-commit at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #4 from CVS Commits --- The releases/gcc-12 branch has been updated by Qing Zhao : https://gcc.gnu.org/g:79ae75cc252154cf4ad75d28c3c909ff90f0cc76 commit r12-8413-g79ae75cc252154cf4ad75d28c3c909ff90f0cc76 Author: Qing Zhao Date:

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-09 Thread qinzhao at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #3 from qinzhao at gcc dot gnu.org --- fixed in gcc13.

[Bug target/101891] Adjust -fzero-call-used-regs to always use XOR

2022-05-09 Thread cvs-commit at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101891 --- Comment #2 from CVS Commits --- The master branch has been updated by Qing Zhao : https://gcc.gnu.org/g:0b86943aca51175968e40bbb6f2662dfe3fbfe59 commit r13-213-g0b86943aca51175968e40bbb6f2662dfe3fbfe59 Author: Qing Zhao Date: Mon May 9