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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism
 bottleneck
Date: Fri, 05 May 2023 12:47:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D84402

--- Comment #67 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org=
>:

https://gcc.gnu.org/g:c0ce29bc1ce329001b6c02bb3d34bcbb086e1b72

commit r14-498-gc0ce29bc1ce329001b6c02bb3d34bcbb086e1b72
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Fri May 5 13:36:43 2023 +0100

    match.pd: CSE the dump output check.

    This is a small improvement in QoL codegen for match.pd to save time not
    re-evaluating the condition for printing debug information in every
function.

    There is a small but consistent runtime and compile time win here.  The
runtime
    win comes from not having to do the condition over again, and on Arm
plaforms
    we now use the new test-and-branch support for booleans to only have a
single
    instruction here.

    gcc/ChangeLog:

            PR bootstrap/84402
            * genmatch.cc (decision_tree::gen, write_predicate): Generate n=
ew
            debug_dump var.
            (dt_simplify::gen_1): Use it.=