[Bug target/47186] -O2 moves invariant address load INTO loop

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47186

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks to be fixed in 5.1+.

5.1-7.3 produces:
.L2:
        call    rand
        addl    $4, %ebx
        movl    %eax, -4(%ebx)
        cmpl    $mike+400, %ebx
        jne     .L2

8.1+ produces
.L2:
        call    rand
        movl    %eax, mike(,%ebx,4)
        addl    $1, %ebx
        cmpl    $100, %ebx
        jne     .L2