[Bug middle-end/47968] ICE: in gen_lowpart_general, at rtlhooks.c:51 when converting vector of double to vector of float

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47968

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-03 
13:34:50 UTC ---
Btw, I wonder since when (and why) we accept

  float4 f4 = (float4) d2;

as valid code.