[Bug target/69460] ARM Cortex M0 produces suboptimal code vs Cortex M3

[strntydog at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69460

--- Comment #6 from strntydog at gmail dot com ---
I have built GCC 7.1.0 and have tested this optimization bug against that.  It
persists.  Further, the new target cortx-m23 is affected by the bug, exactly
the same as Cortex M0/M0+ and M1

The new cortex-m33 target behaves the same as the cortex-m3, in that it
produces legal code for the cortex-m23/m0/m0+/m1 but it is much better
optimised.