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From: "stammark at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/96974] [10/11 Regression] ICE in
 vect_get_vector_types_for_stmt compiling for SVE
Date: Mon, 18 Jan 2021 10:29:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96974

--- Comment #3 from Stam Markianos-Wright <stammark at gcc dot gnu.org> ---
Just started looking at this. I've narrowed it as the bug appearing with co=
mmit
9b75f56d4b7951c60a656396dddd4a65787b95bc.

I have yet to fire this up in gdb to see what's happening, but one test I d=
id
do was to try commenting out the assert that is causing the ICE and it then=
 ran
to completion.=20

So one _total speculation_ would be that with these latest changes that ena=
ble
groups of different sizes, this condition in the assert is now too strict:


multiple_p (TYPE_VECTOR_SUBPARTS (nunits_vectype),
            TYPE_VECTOR_SUBPARTS (*stmt_vectype_out)))=