On Wed, Oct 12, 2011 at 6:32 PM, Richard Henderson <r...@redhat.com> wrote: > I suppose technically the middle-end could be improved to implement > ashl<mode> as vashl<mode> by broadcasting the scalar, but Altivec > is the only extant SIMD ISA that would make use of this. All of > the others can arrange for constant shifts to be encoded into the > insn, and so implement the ashl<mode> named pattern. > > Tested on ppc64-linux, --with-cpu=G5. > > Ok? > > > r~ > > > * config/rs6000/rs6000.c (rs6000_expand_vector_broadcast): New. > * config/rs6000/rs6000-protos.h: Update. > * config/rs6000/vector.md (ashl<VEC_I>3): New. > (lshr<VEC_I>3, ashr<VEC_I>3): New.
The patch is fine. Thanks, David
