[Bug target/125614] [17 Regression] ICE on valid code at -O{2,3} with "-fno-dce -fno-tree-fre" on x86_64-linux-gnu: in extract_insn, at recog.cc:2894

Mon, 15 Jun 2026 22:55:01 -0700 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125614

--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <[email protected]>:

https://gcc.gnu.org/g:ed5d77a4e802288acfaff71f1a0fb6a54a7c6a35

commit r17-1581-ged5d77a4e802288acfaff71f1a0fb6a54a7c6a35
Author: H.J. Lu <[email protected]>
Date:   Tue Jun 16 06:51:29 2026 +0800

    x86: Replace gen_rtx_SUBREG with gen_lowpart

    Replace gen_rtx_SUBREG with gen_lowpart when generating E_HImode RTX on
    destination of

    (subreg:V2QI (reg:HI 111 [ vect__6.14_46 ]) 0)

    with CONST_INT source.

    gcc/

            PR target/125614
            * config/i386/i386-features.cc (replace_vector_const): Replace
            gen_rtx_SUBREG with gen_lowpart.

    gcc/testsuite/

            PR target/125614
            * gcc.target/i386/pr125614.c: New file.

    Signed-off-by: H.J. Lu <[email protected]>

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