[Bug tree-optimization/126690] Missed folding of nested cproj, cabs of a cproj

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126690

--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jeff Law <law@gcc.gnu.org>:

https://gcc.gnu.org/g:0e0ddac529e215ea605541f8613a0777b6f533a6

commit r17-3801-g0e0ddac529e215ea605541f8613a0777b6f533a6
Author: Dipesh Sharma <Dipesh.Sharma@amd.com>
Date:   Mon Aug 31 17:18:35 2026 -0600

    [PATCH] match.pd: Fold CPROJ when nested inside CPROJ or CABS [PR 126690].

    >> +/* { dg-final { scan-tree-dump-not {__builtin_cabsl \(__builtin_cprojl}
"optimized" } } */
    > This testcase will pass even before your match.pd patch.
    > Maybe the best way to write this testcase is count the number of
    > cabs/cproj used.

    Mine, in GIMPLE SSA there wont be nested call to match the above testcase.
    I have updated the patch, PFA it below.

    Thanks,
    Dipesh:q

            PR tree-optimization/126690

    gcc/ChangeLog:
            * match.pd: Add patterns to fold CPROJ when nested inside CPROJ or
CABS.

    gcc/testsuite/ChangeLog:

            * gcc.dg/tree-ssa/pr126690.c: New test.