On 10/25/2011 04:38 PM, Michael Meissner wrote: > On Tue, Oct 25, 2011 at 03:01:37PM -0700, Richard Henderson wrote: >> Now that expand_binop handles lowering vec_extract_even to vec_perm, >> we can remove the last two unnecessary vec_extract patterns from the >> Altivec backend. >> >> Ok? > > Just to be sure, the lowering doesn't depend on -ftree-vectorize (i.e. in case > people are using the buitlins). I assume it doesn't.
No, this lowering happens during expansion to rtl, similar to NEG x -> SUB 0, x and other expansion variants that optabs.c applies. r~
