[Bug tree-optimization/123525] [16 Regression] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -mavx512f

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123525

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #5)
> Before we made sure the perm was going to be the same mode which meant the
> same # of elements but now we have different # of elements.
> 
> Oh the underlying modes of the 2 vector types still need to be the same ...

Otherwise you don't get the sign/zero extension.