[Bug tree-optimization/115531] vectorizer generates inefficient code for masked conditional update loops

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115531

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfch...@gcc.gnu.org>:

https://gcc.gnu.org/g:0c5c0c959c2e592b84739f19ca771fa69eb8dfee

commit r15-2192-g0c5c0c959c2e592b84739f19ca771fa69eb8dfee
Author: Tamar Christina <tamar.christ...@arm.com>
Date:   Mon Jul 22 10:28:19 2024 +0100

    AArch64: implement TARGET_VECTORIZE_CONDITIONAL_OPERATION_IS_EXPENSIVE 
[PR115531].

    This implements the new target hook indicating that for AArch64 when
possible
    we prefer masked operations for any type vs doing LOAD + SELECT or
    SELECT + STORE.

    Thanks,
    Tamar

    gcc/ChangeLog:

            PR tree-optimization/115531
            * config/aarch64/aarch64.cc
            (aarch64_conditional_operation_is_expensive): New.
            (TARGET_VECTORIZE_CONDITIONAL_OPERATION_IS_EXPENSIVE): New.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/115531
            * gcc.dg/vect/vect-conditional_store_1.c: New test.
            * gcc.dg/vect/vect-conditional_store_2.c: New test.
            * gcc.dg/vect/vect-conditional_store_3.c: New test.
            * gcc.dg/vect/vect-conditional_store_4.c: New test.