[Bug tree-optimization/103388] [12 Regression] missed optimization for dead code elimination at -O3 (trunk vs 11.2.0)

2022-01-18 Thread law at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103388 --- Comment #5 from Jeffrey A. Law --- We thread one edge at a time, so we don't know ahead of time how many copies there would be. It could be restructured to go ahead and register these threads, then compute the copy cost on a more global

[Bug tree-optimization/103388] [12 Regression] missed optimization for dead code elimination at -O3 (trunk vs 11.2.0)

2022-01-18 Thread rguenth at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103388 Richard Biener changed: What|Removed |Added Last reconfirmed|2021-11-23 00:00:00 |2022-1-18 Status|NEW

[Bug tree-optimization/103388] [12 Regression] missed optimization for dead code elimination at -O3 (trunk vs 11.2.0)

2021-11-24 Thread rguenth at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103388 Richard Biener changed: What|Removed |Added Target Milestone|--- |12.0 Keywords|