[Bug target/41481] missed optimization in cse

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41481

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |5.4
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
For a long time now (since before gcc-5.4), gcc has generated something like
foo(A*):
        ldrb    r3, [r0, #4]
        movs    r1, #3
        movs    r2, #1
        bics    r3, r1
        orrs    r3, r2
        str     r2, [r0]
        strb    r3, [r0, #4]
        bx      lr

So this is fixed