[Bug target/113133] [14 Regression] ICE: SIGSEGV in mark_label_nuses(rtx_def*) (emit-rtl.cc:3896) with -O -fno-tree-ter -mavx512f -march=barcelona

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113133

--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>:

https://gcc.gnu.org/g:1e7f9abb892443719c82bb17910caa8fb5eeec15

commit r14-6862-g1e7f9abb892443719c82bb17910caa8fb5eeec15
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Fri Dec 29 09:47:43 2023 +0100

    i386: Fix TARGET_USE_VECTOR_FP_CONVERTS SF->DF float_extend splitter
[PR113133]

    The post-reload splitter currently allows xmm16+ registers with
TARGET_EVEX512.
    The splitter changes SFmode of the output operand to V4SFmode, but the
vector
    mode is currently unsupported in xmm16+ without TARGET_AVX512VL.
lowpart_subreg
    returns NULL_RTX in this case and the compilation fails with invalid RTX.

    The patch removes support for x/ymm16+ registers with TARGET_EVEX512.  The
    support should be restored once ix86_hard_regno_mode_ok is fixed to allow
    16-byte modes in x/ymm16+ with TARGET_EVEX512.

            PR target/113133

    gcc/ChangeLog:

            * config/i386/i386.md
            (TARGET_USE_VECTOR_FP_CONVERTS SF->DF float_extend splitter):
            Do not handle xmm16+ with TARGET_EVEX512.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr113133-1.c: New test.
            * gcc.target/i386/pr113133-2.c: New test.