[Bug target/112313] [14 Regression] GCN target 'gcc.dg/pr111082.c' ICE, 'during RTL pass: vregs': 'error: unrecognizable insn'

[burnus at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112313

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |burnus at gcc dot gnu.org

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Fix written and committed by Andrew as r14-5316-g8da8b922576212

"The problem was a missed case in the vector reduction expand code."

See also https://gcc.gnu.org/pipermail/gcc-patches/2023-November/635982.html


commit 8da8b9225762126ca41b12243d6531cd41a831b3
Author: Andrew Stubbs <a...@codesourcery.com>
Date:   Fri Nov 10 09:43:21 2023 +0000

    amdgcn: Fix vector min/max ICE

    The DImode min/max instructions need a clobber that SImode does not, so
    add the special case to the reduction expand code.

    gcc/ChangeLog:

            * config/gcn/gcn.cc (gcn_expand_reduc_scalar): Add clobber to
DImode
            min/max instructions.