[Bug target/123775] [14 Regression] c-c++-common/torture/vector-compare-1.c ICEs with -O3 -march=armv9-a+sve2 -msve-vector-bits=128 --param aarch64-autovec-preference=sve-only

Mon, 16 Mar 2026 06:42:32 -0700 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123775

--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-14 branch has been updated by Richard Biener
<[email protected]>:

https://gcc.gnu.org/g:25f1c6c07b000ac189512d689509e9719ce3bf65

commit r14-12447-g25f1c6c07b000ac189512d689509e9719ce3bf65
Author: Richard Biener <[email protected]>
Date:   Fri Jan 23 09:58:50 2026 +0100

    middle-end/123775 - add missing expand_vec_cond_expr_p to patterns

    This adds a missing check on supportability of a VEC_COND_EXPR
    to a match.pd pattern.  The existing conditions, in particular
    known_eq of TYPE_VECTOR_SUBPARTS, is not enough to distinguish
    VNx4SImode from V4SImode with -msve-vector-bits=128.

            PR middle-end/123775
            * match.pd ((view_convert (vec_cond ...))): Make sure the
            resulting vec_cond can be expanded.

            * gcc.target/aarch64/sve2/pr123775.c: New testcase.

    (cherry picked from commit 4f9a9c26da2fe429d11dc96939dcb135b20d67d7)

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