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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/108738] compile-time and memory-hog in mdreorg
Date: Wed, 15 Feb 2023 07:28:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108738

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:e1dfac7e71056e879f101fef1c5ecb8ff6be1a1f

commit r13-5995-ge1dfac7e71056e879f101fef1c5ecb8ff6be1a1f
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Feb 9 13:40:43 2023 +0100

    target/108738 - optimize bit operations in STV

    The following does low-hanging optimizations, combining bitmap
    test and set and removing redundant operations.

            PR target/108738
            * config/i386/i386-features.cc (scalar_chain::add_to_queue):
            Combine bitmap test and set.
            (scalar_chain::add_insn): Likewise.
            (scalar_chain::analyze_register_chain): Remove redundant
            attempt to add to queue and instead strengthen assert.
            Sink common attempts to mark the def dual-mode.
            (scalar_chain::add_to_queue): Remove redundant insn bitmap
            check.=