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comparison src/fftw-3.3.8/dft/simd/common/t1fv_6.c @ 167:bd3cc4d1df30

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Add FFTW 3.3.8 source, and a Linux build
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 19 Nov 2019 14:52:55 +0000
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166:cbd6d7e562c7 167:bd3cc4d1df30
1 /*
2 * Copyright (c) 2003, 2007-14 Matteo Frigo
3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21 /* This file was automatically generated --- DO NOT EDIT */
22 /* Generated on Thu May 24 08:05:26 EDT 2018 */
23
24 #include "dft/codelet-dft.h"
25
26 #if defined(ARCH_PREFERS_FMA) || defined(ISA_EXTENSION_PREFERS_FMA)
27
28 /* Generated by: ../../../genfft/gen_twiddle_c.native -fma -simd -compact -variables 4 -pipeline-latency 8 -n 6 -name t1fv_6 -include dft/simd/t1f.h */
29
30 /*
31 * This function contains 23 FP additions, 18 FP multiplications,
32 * (or, 17 additions, 12 multiplications, 6 fused multiply/add),
33 * 19 stack variables, 2 constants, and 12 memory accesses
34 */
35 #include "dft/simd/t1f.h"
36
37 static void t1fv_6(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
38 {
39 DVK(KP500000000, +0.500000000000000000000000000000000000000000000);
40 DVK(KP866025403, +0.866025403784438646763723170752936183471402627);
41 {
42 INT m;
43 R *x;
44 x = ri;
45 for (m = mb, W = W + (mb * ((TWVL / VL) * 10)); m < me; m = m + VL, x = x + (VL * ms), W = W + (TWVL * 10), MAKE_VOLATILE_STRIDE(6, rs)) {
46 V T4, Ti, Te, Tk, T9, Tj, T1, T3, T2;
47 T1 = LD(&(x[0]), ms, &(x[0]));
48 T2 = LD(&(x[WS(rs, 3)]), ms, &(x[WS(rs, 1)]));
49 T3 = BYTWJ(&(W[TWVL * 4]), T2);
50 T4 = VSUB(T1, T3);
51 Ti = VADD(T1, T3);
52 {
53 V Tb, Td, Ta, Tc;
54 Ta = LD(&(x[WS(rs, 4)]), ms, &(x[0]));
55 Tb = BYTWJ(&(W[TWVL * 6]), Ta);
56 Tc = LD(&(x[WS(rs, 1)]), ms, &(x[WS(rs, 1)]));
57 Td = BYTWJ(&(W[0]), Tc);
58 Te = VSUB(Tb, Td);
59 Tk = VADD(Tb, Td);
60 }
61 {
62 V T6, T8, T5, T7;
63 T5 = LD(&(x[WS(rs, 2)]), ms, &(x[0]));
64 T6 = BYTWJ(&(W[TWVL * 2]), T5);
65 T7 = LD(&(x[WS(rs, 5)]), ms, &(x[WS(rs, 1)]));
66 T8 = BYTWJ(&(W[TWVL * 8]), T7);
67 T9 = VSUB(T6, T8);
68 Tj = VADD(T6, T8);
69 }
70 {
71 V Th, Tf, Tg, Tn, Tl, Tm;
72 Th = VMUL(LDK(KP866025403), VSUB(Te, T9));
73 Tf = VADD(T9, Te);
74 Tg = VFNMS(LDK(KP500000000), Tf, T4);
75 ST(&(x[WS(rs, 3)]), VADD(T4, Tf), ms, &(x[WS(rs, 1)]));
76 ST(&(x[WS(rs, 1)]), VFMAI(Th, Tg), ms, &(x[WS(rs, 1)]));
77 ST(&(x[WS(rs, 5)]), VFNMSI(Th, Tg), ms, &(x[WS(rs, 1)]));
78 Tn = VMUL(LDK(KP866025403), VSUB(Tk, Tj));
79 Tl = VADD(Tj, Tk);
80 Tm = VFNMS(LDK(KP500000000), Tl, Ti);
81 ST(&(x[0]), VADD(Ti, Tl), ms, &(x[0]));
82 ST(&(x[WS(rs, 4)]), VFMAI(Tn, Tm), ms, &(x[0]));
83 ST(&(x[WS(rs, 2)]), VFNMSI(Tn, Tm), ms, &(x[0]));
84 }
85 }
86 }
87 VLEAVE();
88 }
89
90 static const tw_instr twinstr[] = {
91 VTW(0, 1),
92 VTW(0, 2),
93 VTW(0, 3),
94 VTW(0, 4),
95 VTW(0, 5),
96 {TW_NEXT, VL, 0}
97 };
98
99 static const ct_desc desc = { 6, XSIMD_STRING("t1fv_6"), twinstr, &GENUS, {17, 12, 6, 0}, 0, 0, 0 };
100
101 void XSIMD(codelet_t1fv_6) (planner *p) {
102 X(kdft_dit_register) (p, t1fv_6, &desc);
103 }
104 #else
105
106 /* Generated by: ../../../genfft/gen_twiddle_c.native -simd -compact -variables 4 -pipeline-latency 8 -n 6 -name t1fv_6 -include dft/simd/t1f.h */
107
108 /*
109 * This function contains 23 FP additions, 14 FP multiplications,
110 * (or, 21 additions, 12 multiplications, 2 fused multiply/add),
111 * 19 stack variables, 2 constants, and 12 memory accesses
112 */
113 #include "dft/simd/t1f.h"
114
115 static void t1fv_6(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
116 {
117 DVK(KP500000000, +0.500000000000000000000000000000000000000000000);
118 DVK(KP866025403, +0.866025403784438646763723170752936183471402627);
119 {
120 INT m;
121 R *x;
122 x = ri;
123 for (m = mb, W = W + (mb * ((TWVL / VL) * 10)); m < me; m = m + VL, x = x + (VL * ms), W = W + (TWVL * 10), MAKE_VOLATILE_STRIDE(6, rs)) {
124 V T4, Ti, Te, Tk, T9, Tj, T1, T3, T2;
125 T1 = LD(&(x[0]), ms, &(x[0]));
126 T2 = LD(&(x[WS(rs, 3)]), ms, &(x[WS(rs, 1)]));
127 T3 = BYTWJ(&(W[TWVL * 4]), T2);
128 T4 = VSUB(T1, T3);
129 Ti = VADD(T1, T3);
130 {
131 V Tb, Td, Ta, Tc;
132 Ta = LD(&(x[WS(rs, 4)]), ms, &(x[0]));
133 Tb = BYTWJ(&(W[TWVL * 6]), Ta);
134 Tc = LD(&(x[WS(rs, 1)]), ms, &(x[WS(rs, 1)]));
135 Td = BYTWJ(&(W[0]), Tc);
136 Te = VSUB(Tb, Td);
137 Tk = VADD(Tb, Td);
138 }
139 {
140 V T6, T8, T5, T7;
141 T5 = LD(&(x[WS(rs, 2)]), ms, &(x[0]));
142 T6 = BYTWJ(&(W[TWVL * 2]), T5);
143 T7 = LD(&(x[WS(rs, 5)]), ms, &(x[WS(rs, 1)]));
144 T8 = BYTWJ(&(W[TWVL * 8]), T7);
145 T9 = VSUB(T6, T8);
146 Tj = VADD(T6, T8);
147 }
148 {
149 V Th, Tf, Tg, Tn, Tl, Tm;
150 Th = VBYI(VMUL(LDK(KP866025403), VSUB(Te, T9)));
151 Tf = VADD(T9, Te);
152 Tg = VFNMS(LDK(KP500000000), Tf, T4);
153 ST(&(x[WS(rs, 3)]), VADD(T4, Tf), ms, &(x[WS(rs, 1)]));
154 ST(&(x[WS(rs, 1)]), VADD(Tg, Th), ms, &(x[WS(rs, 1)]));
155 ST(&(x[WS(rs, 5)]), VSUB(Tg, Th), ms, &(x[WS(rs, 1)]));
156 Tn = VBYI(VMUL(LDK(KP866025403), VSUB(Tk, Tj)));
157 Tl = VADD(Tj, Tk);
158 Tm = VFNMS(LDK(KP500000000), Tl, Ti);
159 ST(&(x[0]), VADD(Ti, Tl), ms, &(x[0]));
160 ST(&(x[WS(rs, 4)]), VADD(Tm, Tn), ms, &(x[0]));
161 ST(&(x[WS(rs, 2)]), VSUB(Tm, Tn), ms, &(x[0]));
162 }
163 }
164 }
165 VLEAVE();
166 }
167
168 static const tw_instr twinstr[] = {
169 VTW(0, 1),
170 VTW(0, 2),
171 VTW(0, 3),
172 VTW(0, 4),
173 VTW(0, 5),
174 {TW_NEXT, VL, 0}
175 };
176
177 static const ct_desc desc = { 6, XSIMD_STRING("t1fv_6"), twinstr, &GENUS, {21, 12, 2, 0}, 0, 0, 0 };
178
179 void XSIMD(codelet_t1fv_6) (planner *p) {
180 X(kdft_dit_register) (p, t1fv_6, &desc);
181 }
182 #endif