diff src/fftw-3.3.3/dft/simd/common/n2fv_4.c @ 10:37bf6b4a2645

Add FFTW3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/dft/simd/common/n2fv_4.c	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2003, 2007-11 Matteo Frigo
+ * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+/* This file was automatically generated --- DO NOT EDIT */
+/* Generated on Sun Nov 25 07:37:21 EST 2012 */
+
+#include "codelet-dft.h"
+
+#ifdef HAVE_FMA
+
+/* Generated by: ../../../genfft/gen_notw_c.native -fma -reorder-insns -schedule-for-pipeline -simd -compact -variables 4 -pipeline-latency 8 -n 4 -name n2fv_4 -with-ostride 2 -include n2f.h -store-multiple 2 */
+
+/*
+ * This function contains 8 FP additions, 2 FP multiplications,
+ * (or, 6 additions, 0 multiplications, 2 fused multiply/add),
+ * 15 stack variables, 0 constants, and 10 memory accesses
+ */
+#include "n2f.h"
+
+static void n2fv_4(const R *ri, const R *ii, R *ro, R *io, stride is, stride os, INT v, INT ivs, INT ovs)
+{
+     {
+	  INT i;
+	  const R *xi;
+	  R *xo;
+	  xi = ri;
+	  xo = ro;
+	  for (i = v; i > 0; i = i - VL, xi = xi + (VL * ivs), xo = xo + (VL * ovs), MAKE_VOLATILE_STRIDE(8, is), MAKE_VOLATILE_STRIDE(8, os)) {
+	       V T1, T2, T4, T5;
+	       T1 = LD(&(xi[0]), ivs, &(xi[0]));
+	       T2 = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
+	       T4 = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
+	       T5 = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
+	       {
+		    V T3, T7, T6, T8;
+		    T3 = VSUB(T1, T2);
+		    T7 = VADD(T1, T2);
+		    T6 = VSUB(T4, T5);
+		    T8 = VADD(T4, T5);
+		    {
+			 V T9, Ta, Tb, Tc;
+			 T9 = VSUB(T7, T8);
+			 STM2(&(xo[4]), T9, ovs, &(xo[0]));
+			 Ta = VADD(T7, T8);
+			 STM2(&(xo[0]), Ta, ovs, &(xo[0]));
+			 Tb = VFMAI(T6, T3);
+			 STM2(&(xo[6]), Tb, ovs, &(xo[2]));
+			 STN2(&(xo[4]), T9, Tb, ovs);
+			 Tc = VFNMSI(T6, T3);
+			 STM2(&(xo[2]), Tc, ovs, &(xo[2]));
+			 STN2(&(xo[0]), Ta, Tc, ovs);
+		    }
+	       }
+	  }
+     }
+     VLEAVE();
+}
+
+static const kdft_desc desc = { 4, XSIMD_STRING("n2fv_4"), {6, 0, 2, 0}, &GENUS, 0, 2, 0, 0 };
+
+void XSIMD(codelet_n2fv_4) (planner *p) {
+     X(kdft_register) (p, n2fv_4, &desc);
+}
+
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_notw_c.native -simd -compact -variables 4 -pipeline-latency 8 -n 4 -name n2fv_4 -with-ostride 2 -include n2f.h -store-multiple 2 */
+
+/*
+ * This function contains 8 FP additions, 0 FP multiplications,
+ * (or, 8 additions, 0 multiplications, 0 fused multiply/add),
+ * 11 stack variables, 0 constants, and 10 memory accesses
+ */
+#include "n2f.h"
+
+static void n2fv_4(const R *ri, const R *ii, R *ro, R *io, stride is, stride os, INT v, INT ivs, INT ovs)
+{
+     {
+	  INT i;
+	  const R *xi;
+	  R *xo;
+	  xi = ri;
+	  xo = ro;
+	  for (i = v; i > 0; i = i - VL, xi = xi + (VL * ivs), xo = xo + (VL * ovs), MAKE_VOLATILE_STRIDE(8, is), MAKE_VOLATILE_STRIDE(8, os)) {
+	       V T3, T7, T6, T8;
+	       {
+		    V T1, T2, T4, T5;
+		    T1 = LD(&(xi[0]), ivs, &(xi[0]));
+		    T2 = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
+		    T3 = VSUB(T1, T2);
+		    T7 = VADD(T1, T2);
+		    T4 = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
+		    T5 = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
+		    T6 = VBYI(VSUB(T4, T5));
+		    T8 = VADD(T4, T5);
+	       }
+	       {
+		    V T9, Ta, Tb, Tc;
+		    T9 = VSUB(T3, T6);
+		    STM2(&(xo[2]), T9, ovs, &(xo[2]));
+		    Ta = VADD(T7, T8);
+		    STM2(&(xo[0]), Ta, ovs, &(xo[0]));
+		    STN2(&(xo[0]), Ta, T9, ovs);
+		    Tb = VADD(T3, T6);
+		    STM2(&(xo[6]), Tb, ovs, &(xo[2]));
+		    Tc = VSUB(T7, T8);
+		    STM2(&(xo[4]), Tc, ovs, &(xo[0]));
+		    STN2(&(xo[4]), Tc, Tb, ovs);
+	       }
+	  }
+     }
+     VLEAVE();
+}
+
+static const kdft_desc desc = { 4, XSIMD_STRING("n2fv_4"), {8, 0, 0, 0}, &GENUS, 0, 2, 0, 0 };
+
+void XSIMD(codelet_n2fv_4) (planner *p) {
+     X(kdft_register) (p, n2fv_4, &desc);
+}
+
+#endif				/* HAVE_FMA */