Chris@10: /*
Chris@10:  * Copyright (c) 2003, 2007-11 Matteo Frigo
Chris@10:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
Chris@10:  *
Chris@10:  * This program is free software; you can redistribute it and/or modify
Chris@10:  * it under the terms of the GNU General Public License as published by
Chris@10:  * the Free Software Foundation; either version 2 of the License, or
Chris@10:  * (at your option) any later version.
Chris@10:  *
Chris@10:  * This program is distributed in the hope that it will be useful,
Chris@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@10:  * GNU General Public License for more details.
Chris@10:  *
Chris@10:  * You should have received a copy of the GNU General Public License
Chris@10:  * along with this program; if not, write to the Free Software
Chris@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@10:  *
Chris@10:  */
Chris@10: 
Chris@10: #include "codelet-dft.h"
Chris@10: #include SIMD_HEADER
Chris@10: 
Chris@10: #define EXTERN_CONST(t, x) extern const t x; const t x
Chris@10: 
Chris@10: static int n1b_okp(const kdft_desc *d,
Chris@10: 		   const R *ri, const R *ii, const R *ro, const R *io,
Chris@10: 		   INT is, INT os, INT vl, INT ivs, INT ovs, 
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10:              && ALIGNED(ii)
Chris@10:              && ALIGNED(io)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OK(is)
Chris@10: 	     && SIMD_STRIDE_OK(os)
Chris@10: 	     && SIMD_VSTRIDE_OK(ivs)
Chris@10: 	     && SIMD_VSTRIDE_OK(ovs)
Chris@10:              && ri == ii + 1
Chris@10:              && ro == io + 1
Chris@10:              && (vl % VL) == 0
Chris@10:              && (!d->is || (d->is == is))
Chris@10:              && (!d->os || (d->os == os))
Chris@10:              && (!d->ivs || (d->ivs == ivs))
Chris@10:              && (!d->ovs || (d->ovs == ovs))
Chris@10:           );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(kdft_genus, XSIMD(dft_n1bsimd_genus)) = { n1b_okp, VL };
Chris@10: 
Chris@10: static int n1f_okp(const kdft_desc *d,
Chris@10: 		   const R *ri, const R *ii, const R *ro, const R *io,
Chris@10: 		   INT is, INT os, INT vl, INT ivs, INT ovs, 
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10:              && ALIGNED(ri)
Chris@10:              && ALIGNED(ro)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OK(is)
Chris@10: 	     && SIMD_STRIDE_OK(os)
Chris@10: 	     && SIMD_VSTRIDE_OK(ivs)
Chris@10: 	     && SIMD_VSTRIDE_OK(ovs)
Chris@10:              && ii == ri + 1
Chris@10:              && io == ro + 1
Chris@10:              && (vl % VL) == 0
Chris@10:              && (!d->is || (d->is == is))
Chris@10:              && (!d->os || (d->os == os))
Chris@10:              && (!d->ivs || (d->ivs == ivs))
Chris@10:              && (!d->ovs || (d->ovs == ovs))
Chris@10:           );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(kdft_genus, XSIMD(dft_n1fsimd_genus)) = { n1f_okp, VL };
Chris@10: 
Chris@10: static int n2b_okp(const kdft_desc *d,
Chris@10: 		   const R *ri, const R *ii, const R *ro, const R *io,
Chris@10: 		   INT is, INT os, INT vl, INT ivs, INT ovs, 
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10:              && ALIGNEDA(ii)
Chris@10:              && ALIGNEDA(io)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OKA(is)
Chris@10: 	     && SIMD_VSTRIDE_OKA(ivs)
Chris@10: 	     && SIMD_VSTRIDE_OKA(os) /* os == 2 enforced by codelet */
Chris@10: 	     && SIMD_STRIDE_OKPAIR(ovs)
Chris@10:              && ri == ii + 1
Chris@10:              && ro == io + 1
Chris@10:              && (vl % VL) == 0
Chris@10:              && (!d->is || (d->is == is))
Chris@10:              && (!d->os || (d->os == os))
Chris@10:              && (!d->ivs || (d->ivs == ivs))
Chris@10:              && (!d->ovs || (d->ovs == ovs))
Chris@10:           );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(kdft_genus, XSIMD(dft_n2bsimd_genus)) = { n2b_okp, VL };
Chris@10: 
Chris@10: static int n2f_okp(const kdft_desc *d,
Chris@10: 		   const R *ri, const R *ii, const R *ro, const R *io,
Chris@10: 		   INT is, INT os, INT vl, INT ivs, INT ovs, 
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10:              && ALIGNEDA(ri)
Chris@10:              && ALIGNEDA(ro)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OKA(is)
Chris@10: 	     && SIMD_VSTRIDE_OKA(ivs)
Chris@10: 	     && SIMD_VSTRIDE_OKA(os) /* os == 2 enforced by codelet */
Chris@10: 	     && SIMD_STRIDE_OKPAIR(ovs)
Chris@10:              && ii == ri + 1
Chris@10:              && io == ro + 1
Chris@10:              && (vl % VL) == 0
Chris@10:              && (!d->is || (d->is == is))
Chris@10:              && (!d->os || (d->os == os))
Chris@10:              && (!d->ivs || (d->ivs == ivs))
Chris@10:              && (!d->ovs || (d->ovs == ovs))
Chris@10:           );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(kdft_genus, XSIMD(dft_n2fsimd_genus)) = { n2f_okp, VL };
Chris@10: 
Chris@10: static int n2s_okp(const kdft_desc *d,
Chris@10: 		   const R *ri, const R *ii, const R *ro, const R *io,
Chris@10: 		   INT is, INT os, INT vl, INT ivs, INT ovs, 
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && ALIGNEDA(ri)
Chris@10: 	     && ALIGNEDA(ii)
Chris@10: 	     && ALIGNEDA(ro)
Chris@10: 	     && ALIGNEDA(io)
Chris@10: 	     && SIMD_STRIDE_OKA(is)
Chris@10: 	     && ivs == 1
Chris@10: 	     && os == 1
Chris@10: 	     && SIMD_STRIDE_OKA(ovs)
Chris@10: 	     && (vl % (2 * VL)) == 0
Chris@10: 	     && (!d->is || (d->is == is))
Chris@10: 	     && (!d->os || (d->os == os))
Chris@10: 	     && (!d->ivs || (d->ivs == ivs))
Chris@10: 	     && (!d->ovs || (d->ovs == ovs))
Chris@10: 	  );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(kdft_genus, XSIMD(dft_n2ssimd_genus)) = { n2s_okp, 2 * VL };
Chris@10: 
Chris@10: static int q1b_okp(const ct_desc *d,
Chris@10: 		   const R *rio, const R *iio, 
Chris@10: 		   INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10: 	     && ALIGNED(iio)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OK(rs)
Chris@10: 	     && SIMD_STRIDE_OK(vs)
Chris@10: 	     && SIMD_VSTRIDE_OK(ms)
Chris@10: 	     && rio == iio + 1
Chris@10: 	     && (m % VL) == 0
Chris@10: 	     && (mb % VL) == 0
Chris@10: 	     && (me % VL) == 0
Chris@10: 	     && (!d->rs || (d->rs == rs))
Chris@10: 	     && (!d->vs || (d->vs == vs))
Chris@10: 	     && (!d->ms || (d->ms == ms))
Chris@10: 	  );
Chris@10: }
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_q1bsimd_genus)) = { q1b_okp, VL };
Chris@10: 
Chris@10: static int q1f_okp(const ct_desc *d,
Chris@10: 		   const R *rio, const R *iio, 
Chris@10: 		   INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		   const planner *plnr)
Chris@10: {
Chris@10:      return (1
Chris@10: 	     && ALIGNED(rio)
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OK(rs)
Chris@10: 	     && SIMD_STRIDE_OK(vs)
Chris@10: 	     && SIMD_VSTRIDE_OK(ms)
Chris@10: 	     && iio == rio + 1
Chris@10: 	     && (m % VL) == 0
Chris@10: 	     && (mb % VL) == 0
Chris@10: 	     && (me % VL) == 0
Chris@10: 	     && (!d->rs || (d->rs == rs))
Chris@10: 	     && (!d->vs || (d->vs == vs))
Chris@10: 	     && (!d->ms || (d->ms == ms))
Chris@10: 	  );
Chris@10: }
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_q1fsimd_genus)) = { q1f_okp, VL };
Chris@10: 
Chris@10: static int t_okp_common(const ct_desc *d,
Chris@10: 			const R *rio, const R *iio, 
Chris@10: 			INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 			const planner *plnr)
Chris@10: {
Chris@10:      UNUSED(rio); UNUSED(iio);
Chris@10:      return (1
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OKA(rs)
Chris@10: 	     && SIMD_VSTRIDE_OKA(ms)
Chris@10: 	     && (m % VL) == 0
Chris@10: 	     && (mb % VL) == 0
Chris@10: 	     && (me % VL) == 0
Chris@10: 	     && (!d->rs || (d->rs == rs))
Chris@10: 	     && (!d->vs || (d->vs == vs))
Chris@10: 	     && (!d->ms || (d->ms == ms))
Chris@10: 	  );
Chris@10: }
Chris@10: 
Chris@10: static int t_okp_commonu(const ct_desc *d,
Chris@10: 			 const R *rio, const R *iio, 
Chris@10: 			 INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 			 const planner *plnr)
Chris@10: {
Chris@10:      UNUSED(rio); UNUSED(iio); UNUSED(m);
Chris@10:      return (1
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && SIMD_STRIDE_OK(rs)
Chris@10: 	     && SIMD_VSTRIDE_OK(ms)
Chris@10: 	     && (mb % VL) == 0
Chris@10: 	     && (me % VL) == 0
Chris@10: 	     && (!d->rs || (d->rs == rs))
Chris@10: 	     && (!d->vs || (d->vs == vs))
Chris@10: 	     && (!d->ms || (d->ms == ms))
Chris@10: 	  );
Chris@10: }
Chris@10: 
Chris@10: static int t_okp_t1f(const ct_desc *d,
Chris@10: 		     const R *rio, const R *iio, 
Chris@10: 		     INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		     const planner *plnr)
Chris@10: {
Chris@10:      return  t_okp_common(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && iio == rio + 1
Chris@10: 	  && ALIGNEDA(rio);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t1fsimd_genus)) = { t_okp_t1f, VL };
Chris@10: 
Chris@10: static int t_okp_t1fu(const ct_desc *d,
Chris@10: 		      const R *rio, const R *iio, 
Chris@10: 		      INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		      const planner *plnr)
Chris@10: {
Chris@10:      return  t_okp_commonu(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && iio == rio + 1
Chris@10: 	  && ALIGNED(rio);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t1fusimd_genus)) = { t_okp_t1fu, VL };
Chris@10: 
Chris@10: static int t_okp_t1b(const ct_desc *d,
Chris@10: 		     const R *rio, const R *iio, 
Chris@10: 		     INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		     const planner *plnr)
Chris@10: {
Chris@10:      return  t_okp_common(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && rio == iio + 1
Chris@10: 	  && ALIGNEDA(iio);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t1bsimd_genus)) = { t_okp_t1b, VL };
Chris@10: 
Chris@10: static int t_okp_t1bu(const ct_desc *d,
Chris@10: 		      const R *rio, const R *iio,
Chris@10: 		      INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		      const planner *plnr)
Chris@10: {									
Chris@10:      return  t_okp_commonu(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && rio == iio + 1
Chris@10: 	  && ALIGNED(iio);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t1busimd_genus)) = { t_okp_t1bu, VL };
Chris@10: 
Chris@10: /* use t2* codelets only when n = m*radix is small, because
Chris@10:    t2* codelets use ~2n twiddle factors (instead of ~n) */
Chris@10: static int small_enough(const ct_desc *d, INT m)
Chris@10: {
Chris@10:      return m * d->radix <= 16384;
Chris@10: }
Chris@10: 
Chris@10: static int t_okp_t2f(const ct_desc *d,
Chris@10: 		     const R *rio, const R *iio, 
Chris@10: 		     INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		     const planner *plnr)
Chris@10: {
Chris@10:      return  t_okp_t1f(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && small_enough(d, m);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t2fsimd_genus)) = { t_okp_t2f, VL };
Chris@10: 
Chris@10: static int t_okp_t2b(const ct_desc *d,
Chris@10: 		     const R *rio, const R *iio, 
Chris@10: 		     INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		     const planner *plnr)
Chris@10: {
Chris@10:      return  t_okp_t1b(d, rio, iio, rs, vs, m, mb, me, ms, plnr)
Chris@10: 	  && small_enough(d, m);
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_t2bsimd_genus)) = { t_okp_t2b, VL };
Chris@10: 
Chris@10: static int ts_okp(const ct_desc *d,
Chris@10: 		  const R *rio, const R *iio, 
Chris@10: 		  INT rs, INT vs, INT m, INT mb, INT me, INT ms,
Chris@10: 		  const planner *plnr)
Chris@10: {
Chris@10:      UNUSED(rio);
Chris@10:      UNUSED(iio);
Chris@10:      return (1
Chris@10: 	     && !NO_SIMDP(plnr)
Chris@10: 	     && ALIGNEDA(rio)
Chris@10: 	     && ALIGNEDA(iio)
Chris@10: 	     && SIMD_STRIDE_OKA(rs)
Chris@10: 	     && ms == 1
Chris@10: 	     && (m % (2 * VL)) == 0
Chris@10: 	     && (mb % (2 * VL)) == 0
Chris@10: 	     && (me % (2 * VL)) == 0
Chris@10: 	     && (!d->rs || (d->rs == rs))
Chris@10: 	     && (!d->vs || (d->vs == vs))
Chris@10: 	     && (!d->ms || (d->ms == ms))
Chris@10: 	  );
Chris@10: }
Chris@10: 
Chris@10: EXTERN_CONST(ct_genus,  XSIMD(dft_tssimd_genus)) = { ts_okp, 2 * VL };