spu: Use the FMA rtx code.
* config/spu/spu.md (fma<VSF>4): Rename from fma_<VSF>.
(fnma<VSF>4): Rename from fnms_<VSF>.
(fms<VSF>4): Rename from fms_<VSF>.
(fma<VDF>4): Rename from fma_<VDF>.
(fms<VDF>4): Rename from fms_<VDF>.
(nfma<VDF>4): Rename from fnma_<VDF>.
(nfms<VDF>4): Rename from fnms_<VDF>.
(fnma<VDF>4, fnms<VDF>4): New expanders.
(floatunsdisf2): Update for the renames.
(*div<VSF>3_fast, *div<VSF>3_adjusted): Likewise.
* config/spu/spu-builtins.def: Update CODE_FOR_* for the renames.
From-SVN: r166833