[Bug tree-optimization/56547] missed opportunity for FMA with -ffast-math

2025-01-16 Thread pinskia at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56547 Andrew Pinski changed: What|Removed |Added CC||pinskia at gcc dot gnu.org --- Comment #

[Bug tree-optimization/56547] missed opportunity for FMA with -ffast-math

2025-01-16 Thread pinskia at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56547 Andrew Pinski changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned a

[Bug tree-optimization/56547] missed opportunity for FMA with -ffast-math

2021-09-06 Thread rguenth at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56547 --- Comment #8 from Richard Biener --- It's fold_plusminus_mult_expr doing this on GENERIC already. I suppose FMA detection might want to consider undoing this. It's also questionable whether transforming a * b + a this way is profitable but I

[Bug tree-optimization/56547] missed opportunity for FMA with -ffast-math

2021-09-06 Thread pinskia at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56547 --- Comment #7 from Andrew Pinski --- >Not sure yet whether this is actually target specific. It is not.