[Bug target/104511] [10 Regression] ICE: in emit_move_insn, at expr.cc:4010 with __builtin_convertvector() at -O

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104511

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:2cd7683cdbccf5d3fce58aa279e77c8baa48e4bd

commit r10-10500-g2cd7683cdbccf5d3fce58aa279e77c8baa48e4bd
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Feb 14 10:09:10 2022 +0100

    tree-optimization/104511 - avoid FP to DFP conversion for VEC_PACK_TRUNC

    This avoids forwprop from matching DFP <-> FP vector conversions
    using VEC_[UN]PACK{_TRUNC,_LO,_HI}.  Maybe DFP vectors shouldn't be
    a thing, but they appearantly are.  Re-using CONVERT/NOP_EXPR for
    DFP <-> FP conversions was probably a mistake.

    2022-02-14  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/104511
            * tree-ssa-forwprop.c (simplify_vector_constructor): Avoid
            touching DFP <-> FP conversions.

            * gcc.dg/pr104511.c: New testcase.

    (cherry picked from commit f320197c8b495324dc6997a99d53e7f45ecf5840)