[Bug target/42779] [C++0x] Variadic templates + lambdas = extremely poor code quality, __m128i and aliasing sucks

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2010-01-17 21:08 -------
If you fix that issue (simply remove all __may_alias__ attributes from
preprocessed source) you get

.L62:
        addl    $1, %edx
        movdqa  (%ebx,%eax), %xmm0
        pand    (%esi,%eax), %xmm0
        movdqa  %xmm0, (%edi,%eax)
        addl    $16, %eax
        cmpl    %edx, %ecx
        jne     .L62

for the innermost loop.  Maybe not 100% perfect but reasonable (that's -O2).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42779