https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83661
--- Comment #6 from Christophe Monat <christophe.monat at st dot com> --- (In reply to Alexander Monakov from comment #5) > sincos performs range reduction for the argument just once, which is fairly > important. A well-optimized sincos also shares some computations for the > sin/cos parts, as done in > https://github.com/ARM-software/optimized-routines/blob/master/math/sincosf.c Thanks for the pointer, indeed this implementation looks great. @Pratamesh #Linaro: is there synchronization between the ARM optimized routines and the usuals libc (glibc, newlib, musl,...) ? (snip) > (fwiw I'm against adding such transforms to the compiler) I would favor upgrading the routines if it's not already done, and not do any such transformation in the compiler.
