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

[Yuao Ma]

Hello world,

This patch partially handled PR118592.

This patch builds upon r16-710-g591d3d02664c7b and r16-711-g89935d56f768b4. It
introduces middle-end optimizations, such as constant folding, for our
trigonometric pi-based function built-ins.

For MPFR versions older than 4.2.0, we've included our own folding functions.
I've also added tests to ensure everything works as expected.

Best regards,
Yuao

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