--- /dev/null
+/***************************************************************************
+Copyright (c) 2017, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*****************************************************************************/
+
+
+#include "common.h"
+
+#include <arm_neon.h>
+
+#define N "x0" /* vector length */
+#define X "x1" /* "X" vector address */
+#define INC_X "x2" /* "X" stride */
+#define Y "x3" /* "Y" vector address */
+#define INC_Y "x4" /* "Y" stride */
+#define J "x5" /* loop variable */
+
+#if !defined(DOUBLE)
+#define REG0 "wzr"
+#define DOTF "s0"
+#define DOTI "s1"
+#define INC_SHIFT "3"
+#define N_DIV_SHIFT "4"
+#define N_REM_MASK "15"
+#else
+#define REG0 "xzr"
+#define DOTF "d0"
+#define DOTI "d1"
+#define INC_SHIFT "4"
+#define N_DIV_SHIFT "3"
+#define N_REM_MASK "7"
+#endif
+
+#if !defined(CONJ)
+#define f_ii "fmls"
+#define f_ir "fmla"
+#define a_ii "fsub"
+#define a_ir "fadd"
+#else
+#define f_ii "fmla"
+#define f_ir "fmls"
+#define a_ii "fadd"
+#define a_ir "fsub"
+#endif
+
+#if !defined(DOUBLE)
+#define KERNEL_F1 \
+ " ldr d16, ["X"] \n" \
+ " ldr d24, ["Y"] \n" \
+ " add "X", "X", "INC_X" \n" \
+ " add "Y", "Y", "INC_Y" \n" \
+ " ins v17.s[0], v16.s[1] \n" \
+ " fmla "DOTF", s16, v24.s[0] \n" \
+ " "f_ii" "DOTF", s17, v24.s[1] \n" \
+ " "f_ir" "DOTI", s17, v24.s[0] \n" \
+ " fmla "DOTI", s16, v24.s[1] \n"
+
+#define KERNEL_F \
+ " ld2 {v16.4s, v17.4s}, ["X"] \n" \
+ " ld2 {v24.4s, v25.4s}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " ld2 {v18.4s, v19.4s}, ["X"] \n" \
+ " ld2 {v26.4s, v27.4s}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " fmla v0.4s, v16.4s, v24.4s \n" \
+ " fmla v1.4s, v17.4s, v25.4s \n" \
+ " fmla v2.4s, v16.4s, v25.4s \n" \
+ " fmla v3.4s, v17.4s, v24.4s \n" \
+ " ld2 {v20.4s, v21.4s}, ["X"] \n" \
+ " ld2 {v28.4s, v29.4s}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " fmla v4.4s, v18.4s, v26.4s \n" \
+ " fmla v5.4s, v19.4s, v27.4s \n" \
+ " fmla v6.4s, v18.4s, v27.4s \n" \
+ " fmla v7.4s, v19.4s, v26.4s \n" \
+ " ld2 {v22.4s, v23.4s}, ["X"] \n" \
+ " ld2 {v30.4s, v31.4s}, ["Y"] \n" \
+ " fmla v0.4s, v20.4s, v28.4s \n" \
+ " fmla v1.4s, v21.4s, v29.4s \n" \
+ " fmla v2.4s, v20.4s, v29.4s \n" \
+ " fmla v3.4s, v21.4s, v28.4s \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " PRFM PLDL1KEEP, ["X", #1024] \n" \
+ " PRFM PLDL1KEEP, ["Y", #1024] \n" \
+ " PRFM PLDL1KEEP, ["X", #1024+64] \n" \
+ " PRFM PLDL1KEEP, ["Y", #1024+64] \n" \
+ " fmla v4.4s, v22.4s, v30.4s \n" \
+ " fmla v5.4s, v23.4s, v31.4s \n" \
+ " fmla v6.4s, v22.4s, v31.4s \n" \
+ " fmla v7.4s, v23.4s, v30.4s \n"
+
+#define KERNEL_F_FINALIZE \
+ " fadd v0.4s, v0.4s, v4.4s \n" \
+ " fadd v1.4s, v1.4s, v5.4s \n" \
+ " fadd v2.4s, v2.4s, v6.4s \n" \
+ " fadd v3.4s, v3.4s, v7.4s \n" \
+ " "a_ii" v0.4s, v0.4s, v1.4s \n" \
+ " "a_ir" v1.4s, v2.4s, v3.4s \n" \
+ " faddp v0.4s, v0.4s, v0.4s \n" \
+ " faddp v0.4s, v0.4s, v0.4s \n" \
+ " faddp v1.4s, v1.4s, v1.4s \n" \
+ " faddp v1.4s, v1.4s, v1.4s \n"
+
+#else
+
+#define KERNEL_F1 \
+ " ldr q16, ["X"] \n" \
+ " ldr q24, ["Y"] \n" \
+ " add "X", "X", "INC_X" \n" \
+ " add "Y", "Y", "INC_Y" \n" \
+ " ins v17.d[0], v16.d[1] \n" \
+ " fmla "DOTF", d16, v24.d[0] \n" \
+ " "f_ii" "DOTF", d17, v24.d[1] \n" \
+ " "f_ir" "DOTI", d17, v24.d[0] \n" \
+ " fmla "DOTI", d16, v24.d[1] \n"
+
+#define KERNEL_F \
+ " ld2 {v16.2d, v17.2d}, ["X"] \n" \
+ " ld2 {v24.2d, v25.2d}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " ld2 {v18.2d, v19.2d}, ["X"] \n" \
+ " ld2 {v26.2d, v27.2d}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " fmla v0.2d, v16.2d, v24.2d \n" \
+ " fmla v1.2d, v17.2d, v25.2d \n" \
+ " fmla v2.2d, v16.2d, v25.2d \n" \
+ " fmla v3.2d, v17.2d, v24.2d \n" \
+ " ld2 {v20.2d, v21.2d}, ["X"] \n" \
+ " ld2 {v28.2d, v29.2d}, ["Y"] \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " fmla v4.2d, v18.2d, v26.2d \n" \
+ " fmla v5.2d, v19.2d, v27.2d \n" \
+ " fmla v6.2d, v18.2d, v27.2d \n" \
+ " fmla v7.2d, v19.2d, v26.2d \n" \
+ " ld2 {v22.2d, v23.2d}, ["X"] \n" \
+ " ld2 {v30.2d, v31.2d}, ["Y"] \n" \
+ " fmla v0.2d, v20.2d, v28.2d \n" \
+ " fmla v1.2d, v21.2d, v29.2d \n" \
+ " fmla v2.2d, v20.2d, v29.2d \n" \
+ " fmla v3.2d, v21.2d, v28.2d \n" \
+ " add "X", "X", #32 \n" \
+ " add "Y", "Y", #32 \n" \
+ " PRFM PLDL1KEEP, ["X", #1024] \n" \
+ " PRFM PLDL1KEEP, ["Y", #1024] \n" \
+ " PRFM PLDL1KEEP, ["X", #1024+64] \n" \
+ " PRFM PLDL1KEEP, ["Y", #1024+64] \n" \
+ " fmla v4.2d, v22.2d, v30.2d \n" \
+ " fmla v5.2d, v23.2d, v31.2d \n" \
+ " fmla v6.2d, v22.2d, v31.2d \n" \
+ " fmla v7.2d, v23.2d, v30.2d \n"
+
+#define KERNEL_F_FINALIZE \
+ " fadd v0.2d, v0.2d, v4.2d \n" \
+ " fadd v1.2d, v1.2d, v5.2d \n" \
+ " fadd v2.2d, v2.2d, v6.2d \n" \
+ " fadd v3.2d, v3.2d, v7.2d \n" \
+ " "a_ii" v0.2d, v0.2d, v1.2d \n" \
+ " "a_ir" v1.2d, v2.2d, v3.2d \n" \
+ " faddp "DOTF", v0.2d \n" \
+ " faddp "DOTI", v1.2d \n"
+#endif
+
+#if defined(SMP)
+extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
+ BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
+ void *c, BLASLONG ldc, int (*function)(), int nthreads);
+#endif
+
+static void zdot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, OPENBLAS_COMPLEX_FLOAT *result)
+{
+ FLOAT dotr = 0.0, doti = 0.0;
+ CREAL(*result) = 0.0;
+ CIMAG(*result) = 0.0;
+
+ if ( n < 0 ) return;
+
+ __asm__ __volatile__ (
+ " mov "N", %[N_] \n"
+ " mov "X", %[X_] \n"
+ " mov "INC_X", %[INCX_] \n"
+ " mov "Y", %[Y_] \n"
+ " mov "INC_Y", %[INCY_] \n"
+ " fmov "DOTF", "REG0" \n"
+ " fmov "DOTI", "REG0" \n"
+ " fmov d2, xzr \n"
+ " fmov d3, xzr \n"
+ " fmov d4, xzr \n"
+ " fmov d5, xzr \n"
+ " fmov d6, xzr \n"
+ " fmov d7, xzr \n"
+ " cmp "N", xzr \n"
+ " ble .Ldot_kernel_L999 \n"
+ " cmp "INC_X", #1 \n"
+ " bne .Ldot_kernel_S_BEGIN \n"
+ " cmp "INC_Y", #1 \n"
+ " bne .Ldot_kernel_S_BEGIN \n"
+
+ ".Ldot_kernel_F_BEGIN: \n"
+ " lsl "INC_X", "INC_X", "INC_SHIFT" \n"
+ " lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
+ " asr "J", "N", #"N_DIV_SHIFT" \n"
+ " cmp "J", xzr \n"
+ " beq .Ldot_kernel_F1 \n"
+
+ " .align 5 \n"
+ ".Ldot_kernel_F: \n"
+ " "KERNEL_F" \n"
+ " subs "J", "J", #1 \n"
+ " bne .Ldot_kernel_F \n"
+ " "KERNEL_F_FINALIZE" \n"
+
+ ".Ldot_kernel_F1: \n"
+ " ands "J", "N", #"N_REM_MASK" \n"
+ " ble .Ldot_kernel_L999 \n"
+
+ ".Ldot_kernel_F10: \n"
+ " "KERNEL_F1" \n"
+ " subs "J", "J", #1 \n"
+ " bne .Ldot_kernel_F10 \n"
+ " b .Ldot_kernel_L999 \n"
+
+ ".Ldot_kernel_S_BEGIN: \n"
+ " lsl "INC_X", "INC_X", "INC_SHIFT" \n"
+ " lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
+ " asr "J", "N", #2 \n"
+ " cmp "J", xzr \n"
+ " ble .Ldot_kernel_S1 \n"
+
+ ".Ldot_kernel_S4: \n"
+ " "KERNEL_F1" \n"
+ " "KERNEL_F1" \n"
+ " "KERNEL_F1" \n"
+ " "KERNEL_F1" \n"
+ " subs "J", "J", #1 \n"
+ " bne .Ldot_kernel_S4 \n"
+
+ ".Ldot_kernel_S1: \n"
+ " ands "J", "N", #3 \n"
+ " ble .Ldot_kernel_L999 \n"
+
+ ".Ldot_kernel_S10: \n"
+ " "KERNEL_F1" \n"
+ " subs "J", "J", #1 \n"
+ " bne .Ldot_kernel_S10 \n"
+
+ ".Ldot_kernel_L999: \n"
+ " str "DOTF", [%[DOTR_]] \n"
+ " str "DOTI", [%[DOTI_]] \n"
+
+ :
+ : [DOTR_] "r" (&dotr), //%0
+ [DOTI_] "r" (&doti), //%1
+ [N_] "r" (n), //%2
+ [X_] "r" (x), //%3
+ [INCX_] "r" (inc_x), //%4
+ [Y_] "r" (y), //%5
+ [INCY_] "r" (inc_y) //%6
+ : "cc",
+ "memory",
+ "x0", "x1", "x2", "x3", "x4", "x5",
+ "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
+ );
+
+ CREAL(*result) = dotr;
+ CIMAG(*result) = doti;
+ return;
+}
+
+#if defined(SMP)
+static int zdot_thread_function(BLASLONG n, BLASLONG dummy0,
+ BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
+ BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
+{
+ zdot_compute(n, x, inc_x, y, inc_y, (void *)result);
+
+ return 0;
+}
+#endif
+
+OPENBLAS_COMPLEX_FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
+{
+#if defined(SMP)
+ int nthreads;
+ FLOAT dummy_alpha;
+#endif
+ OPENBLAS_COMPLEX_FLOAT zdot;
+ CREAL(zdot) = 0.0;
+ CIMAG(zdot) = 0.0;
+
+#if defined(SMP)
+ nthreads = num_cpu_avail(1);
+
+ if (inc_x == 0 || inc_y == 0)
+ nthreads = 1;
+
+ if (n <= 10000)
+ nthreads = 1;
+
+ if (nthreads == 1) {
+ zdot_compute(n, x, inc_x, y, inc_y, &zdot);
+ } else {
+ int mode, i;
+ char result[MAX_CPU_NUMBER * sizeof(double) * 2];
+ OPENBLAS_COMPLEX_FLOAT *ptr;
+
+#if !defined(DOUBLE)
+ mode = BLAS_SINGLE | BLAS_COMPLEX;
+#else
+ mode = BLAS_DOUBLE | BLAS_COMPLEX;
+#endif
+
+ blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
+ x, inc_x, y, inc_y, result, 0,
+ ( void *)zdot_thread_function, nthreads);
+
+ ptr = (OPENBLAS_COMPLEX_FLOAT *)result;
+ for (i = 0; i < nthreads; i++) {
+ CREAL(zdot) = CREAL(zdot) + CREAL(*ptr);
+ CIMAG(zdot) = CIMAG(zdot) + CIMAG(*ptr);
+ ptr = (void *)(((char *)ptr) + sizeof(double) * 2);
+ }
+ }
+#else
+ zdot_compute(n, x, inc_x, y, inc_y, &zdot);
+#endif
+
+ return zdot;
+}
projects / platform / upstream / openblas.git / commitdiff