[Bug target/94710] [8/9/10 Regression] Assembler messages: Error: operand out of range (4 is not between 0 and 3) (xxsldwi 0,32,33,4)

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94710

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:f51be2fb8653f81092f8158a0f0527275f86603b

commit r10-7924-gf51be2fb8653f81092f8158a0f0527275f86603b
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Apr 23 21:57:50 2020 +0200

    Shortcut identity VEC_PERM expansion [PR94710]

    This PR is about the rs6000 backend emitting wrong assembly
    for whole vector shift by 0, and while I think it is desirable
    to fix the backend, I don't see a point why the expander should
    try to emit that, whole vector shift by 0 is identity, we can just
    return the operand.

    2020-04-23  Jakub Jelinek  <jakub@redhat.com>

            PR target/94710
            * optabs.c (expand_vec_perm_const): For shift_amt const0_rtx
            just return v2.