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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/108804] missed vectorization in presence of conversion
 from uint64_t to float
Date: Tue, 30 May 2023 23:18:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108804

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:3279b6223066d36d2e6880a137f80a46d3c82c8f

commit r14-1421-g3279b6223066d36d2e6880a137f80a46d3c82c8f
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed Feb 22 17:54:46 2023 +0800

    Enhance NARROW FLOAT_EXPR vectorization by truncating integer to lower
precision.

    Similar like WIDEN FLOAT_EXPR, when direct_optab is not existed, try
    intermediate integer type whenever gimple ranger can tell it's safe.

    .i.e.
    When there's no direct optab for vector long long -> vector float, but
    the value range of integer can be represented as int, try vector int
    -> vector float if availble.

    gcc/ChangeLog:

            PR tree-optimization/108804
            * tree-vect-patterns.cc (vect_get_range_info): Remove static.
            * tree-vect-stmts.cc (vect_create_vectorized_demotion_stmts):
            Add new parameter narrow_src_p.
            (vectorizable_conversion): Enhance NARROW FLOAT_EXPR
            vectorization by truncating to lower precision.
            * tree-vectorizer.h (vect_get_range_info): New declare.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr108804.c: New test.=