On Fri, May 13, 2016 at 12:58 PM, Richard Biener <richard.guent...@gmail.com> wrote: > On May 13, 2016 9:18:57 PM GMT+02:00, Cesar Philippidis > <ce...@codesourcery.com> wrote: >>The cse_sincos pass tries to optimize sequences such as >> >> sin (x); >> cos (x); >> >>into a single call to sincos, or cexpi, when available. However, the >>nvptx target has sin and cos instructions, albeit with some loss of >>precision (so it's only enabled with -ffast-math). This patch teaches >>cse_sincos pass to ignore sin, cos and cexpi instructions when the >>target can expand those calls. This yields a 6x speedup in 314.omriq >>from spec accel when running on Nvidia accelerators. >> >>Is this OK for trunk? > > Isn't there an optab for sincos?
This is exactly what I was going to suggest. This transformation should be done in the back-end back to sin/cos instructions. Thanks, Andrew > ISTR x87 handles this pass just fine and also can do sin and cos. > > Richard. > >>Cesar > >
