[Bug tree-optimization/86829] Missing sin(atan(x)) and cos(atan(x)) optimizations

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86829

--- Comment #6 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Oct 11 21:06:12 2018
New Revision: 265064

URL: https://gcc.gnu.org/viewcvs?rev=265064&root=gcc&view=rev
Log:
        PR tree-optimization/86829
        * match.pd (sin (atan (x))): New simplification rules.
        (cos (atan (x))): Likewise.
        * real.c (build_sinatan_real): New function.
        * real.h (build_sinatan_real): Prototype.

        PR tree-optimization/86829
        * gcc.dg/sinatan-1.c: New test.
        * gcc.dg/sinatan-2.c: New test.
        * gcc.dg/sinatan-3.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/sinatan-1.c
    trunk/gcc/testsuite/gcc.dg/sinatan-2.c
    trunk/gcc/testsuite/gcc.dg/sinatan-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/real.c
    trunk/gcc/real.h
    trunk/gcc/testsuite/ChangeLog