[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #10 from Bernd Edlinger --- (In reply to Richard Biener from comment #7) > > > Shall I raise this to P1 so it prevents gcc-10 release? > > Definitely not. Setting priority is the release managers job, and btw. > bug priority is mea

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread hubicka at ucw dot cz
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #9 from Jan Hubicka --- > --- Comment #8 from Richard Biener --- > Oh, and bugfixing requires to first understand the bug. Especially for > performance related issues understanding what goes wrong is important. > I see no analysis b

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 Richard Biener changed: What|Removed |Added Status|NEW |WAITING --- Comment #8 from Richard Bie

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #7 from Richard Biener --- (In reply to Bernd Edlinger from comment #4) > (In reply to Martin Jambor from comment #3) > > My benchmarking setup is currently gone so unfortunately no, not easily. > > I'll be re-measuring everything on

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 Bernd Edlinger changed: What|Removed |Added Priority|P3 |P1

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #6 from Bernd Edlinger --- (In reply to Jakub Jelinek from comment #5) > No, we can't block GCC 10 release indefinitely, we are already behind the > usual schedule. We need to resolve the C++ ABI issues and get the release > out. So

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread jakub at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #5 from Jakub Jelinek --- No, we can't block GCC 10 release indefinitely, we are already behind the usual schedule. We need to resolve the C++ ABI issues and get the release out.

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #4 from Bernd Edlinger --- (In reply to Martin Jambor from comment #3) > My benchmarking setup is currently gone so unfortunately no, not easily. > I'll be re-measuring everything on a different computer with a slightly > different C

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-28 Thread jamborm at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #3 from Martin Jambor --- My benchmarking setup is currently gone so unfortunately no, not easily. I'll be re-measuring everything on a different computer with a slightly different CPU model soon, so after that I guess I could. But

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-27 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 --- Comment #2 from Bernd Edlinger --- Martin, can you try to change the limits, maybe that is just a limit for inline expansions that is not right?

[Bug ipa/94472] 400.perlbench is slower when compiled at -O2 with both PGO and LTO on AMD Zen CPUs

2020-04-27 Thread edlinger at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94472 Bernd Edlinger changed: What|Removed |Added Last reconfirmed||2020-04-28 Ever confirmed|0