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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/103353] Indefinite recursion when compiling -mmma
 requiring testcase w/ -maltivec
Date: Wed, 24 Aug 2022 02:31:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103353

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Kewen Lin <linkw@gcc.gnu.org=
>:

https://gcc.gnu.org/g:d0d72e0b1ebbac487d70281a56799bf547034ec1

commit r12-8709-gd0d72e0b1ebbac487d70281a56799bf547034ec1
Author: Kewen.Lin <linkw@gcc.gnu.org>
Date:   Tue Aug 16 00:24:07 2022 -0500

    rs6000: Adjust mov optabs for opaque modes [PR103353]

    As PR103353 shows, we may want to continue to expand built-in
    function __builtin_vsx_lxvp, even if we have already emitted
    error messages about some missing required conditions.  As
    shown in that PR, without one explicit mov optab on OOmode
    provided, it would call emit_move_insn recursively.

    So this patch is to allow the mov pattern to be generated during
    expanding phase if compiler has already seen errors.

            PR target/103353

    gcc/ChangeLog:

            * config/rs6000/mma.md (define_expand movoo): Move TARGET_MMA
condition
            check to preparation statements and add handlings for !TARGET_M=
MA.
            (define_expand movxo): Likewise.

    gcc/testsuite/ChangeLog:

            * gcc.target/powerpc/pr103353.c: New test.

    (cherry picked from commit 9367e3a65f874dffc8f8a3b6760e77fd9ed67117)=