[Bug target/57156] miscompilation of call to _mm_cmpeq_epi8(a, a) or _mm_comtrue_epu8(a, a) with uninitialized a

[kretz at kde dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57156



--- Comment #4 from Matthias Kretz <kretz at kde dot org> 2013-05-03 09:37:58 
UTC ---

(In reply to comment #3)

> I think this is undefined code as you use a uninitialized.



I wouldn't know how to counter this for the _mm_cmpeq_epi8 case, but for

_mm_comtrue_epu8? How am I supposed to use this intrinsic?