[Bug tree-optimization/34011] Memory load is not eliminated from tight vectorized loop

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34011

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
good function:
.L3:
        movdqu  (%rdi,%rax), %xmm0
        pslld   %xmm1, %xmm0
        movups  %xmm0, (%rsi,%rax)
        addq    $16, %rax
        cmpq    $1024, %rax
        jne     .L3

bad function:
.L11:
        movdqu  (%rdi,%rax), %xmm0
        movdqu  (%rsi,%rax), %xmm2
        pslld   %xmm1, %xmm0
        por     %xmm2, %xmm0
        movups  %xmm0, (%rsi,%rax)
        addq    $16, %rax
        cmpq    $1024, %rax
        jne     .L11


Looks good to me now.