[Bug c/38927] New: _mm_set_epi32 does not set the third argument if the fourth argument is a constant.

[toojays at toojays dot net]

This bug appears in all of the gcc 4.0.x series, but does not occur in the
4.1.x series.

If you create an __m128i vector using _mm_set_epi32(a, b, c, K),
where a, b and c are variables, and K is a compile-time constant,
the resulting vector has zeros where the value of c should be.

This problem only occurs when optimisation is enabled.


-- 
           Summary: _mm_set_epi32 does not set the third argument if the
                    fourth argument is a constant.
           Product: gcc
           Version: 4.0.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: toojays at toojays dot net
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38927