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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 12:48:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D84402

--- Comment #70 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:0a85544e1aaeca41133ecfc438cda913dbc0f122

commit r14-501-g0a85544e1aaeca41133ecfc438cda913dbc0f122
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Fri May 5 13:42:17 2023 +0100

    match.pd: Use splits in makefile and make configurable.

    This updates the build system to split up match.pd files into chunks of=
 10.
    This also introduces a new flag --with-matchpd-partitions which can be =
used
to
    change the number of partitions.

    For the analysis of why 10 please look at the previous patch in the ser=
ies.

    gcc/ChangeLog:

            PR bootstrap/84402
            * Makefile.in (NUM_MATCH_SPLITS, MATCH_SPLITS_SEQ,
            GIMPLE_MATCH_PD_SEQ_SRC, GIMPLE_MATCH_PD_SEQ_O,
            GENERIC_MATCH_PD_SEQ_SRC, GENERIC_MATCH_PD_SEQ_O): New.
            (OBJS, MOSTLYCLEANFILES, .PRECIOUS): Use them.
            (s-match): Split into s-generic-match and s-gimple-match.
            * configure.ac (with-matchpd-partitions,
            DEFAULT_MATCHPD_PARTITIONS): New.
            * configure: Regenerate.=