[Bug target/108346] gather/scatter loops optimized too often for znver4 (and other zens)

2023-01-16 Thread hubicka at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108346 --- Comment #2 from Jan Hubicka --- Sadly the win/loss cases does not seem to suggest a simple cost scheme. We currently compute gather/scatter costs as static startup cost + cost per lane and they are set to approximately match actual latencies

[Bug target/108346] gather/scatter loops optimized too often for znver4 (and other zens)

2023-01-09 Thread pinskia at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108346 Andrew Pinski changed: What|Removed |Added Component|middle-end |target Blocks|