[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 --- Comment #6 from Richard Biener --- (In reply to Richard Biener from comment #5) > CPU 2006 436.cactusADM also has an interesting history: > https://gcc.opensuse.org/gcc-old/SPEC/CFP/sb-czerny-head-64-2006/ > 436_cactusADM_big.png compared

[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 --- Comment #5 from Richard Biener --- CPU 2006 436.cactusADM also has an interesting history: https://gcc.opensuse.org/gcc-old/SPEC/CFP/sb-czerny-head-64-2006/436_cactusADM_big.png

[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread marxin at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 Martin Liška changed: What|Removed |Added CC||marxin at gcc dot gnu.org --- Comment #4

[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread marxin at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 --- Comment #3 from Martin Liška --- Direct graph link to branch comparison: https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=148.437.0=59.437.0=76.437.0=33.437.0;

[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 --- Comment #2 from Richard Biener --- Ugh. Cactus is really ugly code :/ For one there's an invariant switch () in the innermost loop, expanded to a binary tree (slightly different split point GCC 8 vs. trunk), obviously unswitching cannot

[Bug tree-optimization/90128] 507.cactuBSSN_r is 9-11% slower at -Ofast and native march/tuning on Zen CPUs

2019-04-17 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90128 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed|