[Bug tree-optimization/115710] [11/12/13/14/15 Regression] complex abs does not vectorise

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115710

--- Comment #13 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pinskia@gcc.gnu.org>:

https://gcc.gnu.org/g:d8fe4f05ef448e6a136398d38c0f2170d3c6bb0d

commit r15-1797-gd8fe4f05ef448e6a136398d38c0f2170d3c6bb0d
Author: Andrew Pinski <quic_apinski@quicinc.com>
Date:   Sun Jun 30 12:57:14 2024 -0700

    Move cabs expansion from powcabs to complex lowering [PR115710]

    Expanding cabs in powcab might be too late as forwprop might
    recombine the load from a memory with the complex expr. Moving
    instead to complex lowering allows us to use directly the real/imag
    component from the loads instead. This allows for vectorization too.

    Bootstrapped and tested on x86_64-linux-gnu with no regressions.

            PR tree-optimization/115710

    gcc/ChangeLog:

            * tree-complex.cc (init_dont_simulate_again): Handle CABS.
            (gimple_expand_builtin_cabs): New function, moved mostly
            from tree-ssa-math-opts.cc.
            (expand_complex_operations_1): Call gimple_expand_builtin_cabs.
            * tree-ssa-math-opts.cc (gimple_expand_builtin_cabs): Remove.
            (build_and_insert_binop): Remove.
            (pass_data_expand_powcabs): Update comment.
            (pass_expand_powcabs::execute): Don't handle CABS.

    gcc/testsuite/ChangeLog:

            * gcc.dg/tree-ssa/cabs-1.c: New test.
            * gcc.dg/tree-ssa/cabs-2.c: New test.
            * gfortran.dg/vect/pr115710.f90: New test.

    Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>