[Bug tree-optimization/42046] missed optimization (a?b|1:b&~1) where b is a load from memory

[bruck.michael at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42046

Michael Bruck <bruck.michael at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Michael Bruck <bruck.michael at googlemail dot com> ---
5.2.1 with -Ofast produces 

        ldr     r2, .L5
        ldr     r3, [r2]
        cmp     r0, #0
        orrne   r3, r3, #1
        biceq   r3, r3, #1
        str     r3, [r2]
        bx      lr

I'll mark it as fixed.

There might be some trick to reduce the core logic (cmp/orrne/biceq) further,
but that wasn't my issue.