[Bug testsuite/35621] gcc.target/i386/ssse3-psignw.c fails at -O3

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-03-18 01:07 -------
(In reply to comment #1)
> The problem seems MMX register related.

Actually the testcase violates C aliasing rules.  Way violating them.

      compute_correct_result (&vals[i + 0], &vals[i + 4], ck);


compute_correct_result (int *i1, int *i2, int *r)

  short *sout = (short *) r;

      sout[i] = -s1[i];


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|target                      |testsuite


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35621