[Bug target/117192] [15 Regression] wrong code at -O3 with "-fno-unswitch-loops" on x86_64-linux-gnu since r15-4397-g70f59d2a1c51bd

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117192

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[15 Regression] wrong code  |[15 Regression] wrong code
                   |at -O3 with                 |at -O3 with
                   |"-fno-unswitch-loops" on    |"-fno-unswitch-loops" on
                   |x86_64-linux-gnu            |x86_64-linux-gnu since
                   |                            |r15-4397-g70f59d2a1c51bd

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> I am thinking r15-4397-g70f59d2a1c51bd .

Confirmed it is that. Note since aarch64 produces the same IR even with the
andn, I am thinking some latent bug in the andn handling. 

But looking at the .optimized we have:
  vect__ifc__49.29_73 = MEM <vector(2) int> [(int *)&e + 16B];


But e is not initialized ....