[PATCH] gcc: middle-end opt for trigonometric pi-based functions builtins

[Yuao Ma]

Hi Jakub,

> I think the __builtin_constant_p(acospi(0.5)) approach is usable, but would
> be much better done on the lib/target-supports.exp side.
> So, have foldable_pi_based_trigonometry effective target, which would test
> if __builtin_constant_p(acospi(0.5)) is 1.

Thanks again for your helpful advice.

I've added the foldable_pi_based_trigonometry effective target and removed the
conditional branch in the test case. The test results look good.

Thanks,
Yuao

0001-gcc-middle-end-opt-for-trigonometric-pi-based-functi.patch
Description: 0001-gcc-middle-end-opt-for-trigonometric-pi-based-functi.patch