http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47825
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC|hjl at gcc dot gnu.org |hjl.tools at gmail dot com, | |ubizjak at gmail dot com --- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2011-02-21 13:53:02 UTC --- (In reply to comment #5) > /* Load four SPFP values from P. The address must be 16-byte aligned. */ > extern __inline __m128 __attribute__((__gnu_inline__, __always_inline__, > __artificial__)) > _mm_load_ps (float const *__P) > { > return (__m128) *(__v4sf *)__P; > } > > > re-opening to investigate that. HJ, are the SSE1 intrinsics not > aliasing in the Intel API? The above snippets are from trunk. It is a bug and should be fixed.