421 lines
12 KiB
C
421 lines
12 KiB
C
/***************************************************************************
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Copyright (c) 2017, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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#include <arm_neon.h>
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#if !defined(DSDOT)
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#define RETURN_TYPE FLOAT
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#else
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#define RETURN_TYPE double
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#endif
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#define N "x0" /* vector length */
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#define X "x1" /* "X" vector address */
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#define INC_X "x2" /* "X" stride */
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#define Y "x3" /* "Y" vector address */
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#define INC_Y "x4" /* "Y" stride */
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#define J "x5" /* loop variable */
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#if !defined(DOUBLE)
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#if !defined(DSDOT)
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#define REG0 "wzr"
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#define DOTF "s0"
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#define TMPX "s16"
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#define TMPY "s24"
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#define INC_SHIFT "2"
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#define N_DIV_SHIFT "6"
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#define N_REM_MASK "63"
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#else
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#define REG0 "xzr"
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#define DOTF "d0"
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#define TMPX "s16"
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#define TMPX1 "d2"
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#define TMPY "s24"
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#define TMPY1 "d3"
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#define INC_SHIFT "2"
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#define N_DIV_SHIFT "4"
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#define N_REM_MASK "15"
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#endif
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#else
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#define REG0 "xzr"
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#define DOTF "d0"
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#define TMPX "d16"
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#define TMPY "d24"
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#define INC_SHIFT "3"
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#define N_DIV_SHIFT "5"
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#define N_REM_MASK "31"
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#endif
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#if !defined(DOUBLE)
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#if !defined(DSDOT)
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#define KERNEL_F1 \
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" ldr "TMPX", ["X"] \n" \
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" ldr "TMPY", ["Y"] \n" \
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" add "X", "X", "INC_X" \n" \
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" add "Y", "Y", "INC_Y" \n" \
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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#define KERNEL_F \
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" ldp q16, q17, ["X"] \n" \
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" ldp q24, q25, ["Y"] \n" \
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" ldp q18, q19, ["X", #32] \n" \
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" ldp q26, q27, ["Y", #32] \n" \
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" fmla v0.4s, v16.4s, v24.4s \n" \
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" fmla v1.4s, v17.4s, v25.4s \n" \
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" ldp q20, q21, ["X", #64] \n" \
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" ldp q28, q29, ["Y", #64] \n" \
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" fmla v2.4s, v18.4s, v26.4s \n" \
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" fmla v3.4s, v19.4s, v27.4s \n" \
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" ldp q22, q23, ["X", #96] \n" \
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" ldp q30, q31, ["Y", #96] \n" \
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" add "Y", "Y", #128 \n" \
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" add "X", "X", #128 \n" \
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" fmla v4.4s, v20.4s, v28.4s \n" \
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" fmla v5.4s, v21.4s, v29.4s \n" \
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" PRFM PLDL1KEEP, ["X", #896] \n" \
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" PRFM PLDL1KEEP, ["Y", #896] \n" \
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" PRFM PLDL1KEEP, ["X", #896+64] \n" \
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" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
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" fmla v6.4s, v22.4s, v30.4s \n" \
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" fmla v7.4s, v23.4s, v31.4s \n" \
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" ldp q16, q17, ["X"] \n" \
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" ldp q24, q25, ["Y"] \n" \
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" ldp q18, q19, ["X", #32] \n" \
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" ldp q26, q27, ["Y", #32] \n" \
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" fmla v0.4s, v16.4s, v24.4s \n" \
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" fmla v1.4s, v17.4s, v25.4s \n" \
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" ldp q20, q21, ["X", #64] \n" \
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" ldp q28, q29, ["Y", #64] \n" \
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" fmla v2.4s, v18.4s, v26.4s \n" \
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" fmla v3.4s, v19.4s, v27.4s \n" \
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" ldp q22, q23, ["X", #96] \n" \
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" ldp q30, q31, ["Y", #96] \n" \
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" add "Y", "Y", #128 \n" \
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" add "X", "X", #128 \n" \
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" fmla v4.4s, v20.4s, v28.4s \n" \
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" fmla v5.4s, v21.4s, v29.4s \n" \
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" PRFM PLDL1KEEP, ["X", #896] \n" \
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" PRFM PLDL1KEEP, ["Y", #896] \n" \
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" PRFM PLDL1KEEP, ["X", #896+64] \n" \
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" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
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" fmla v6.4s, v22.4s, v30.4s \n" \
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" fmla v7.4s, v23.4s, v31.4s \n"
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#define KERNEL_F_FINALIZE \
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" fadd v0.4s, v0.4s, v1.4s \n" \
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" fadd v2.4s, v2.4s, v3.4s \n" \
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" fadd v4.4s, v4.4s, v5.4s \n" \
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" fadd v6.4s, v6.4s, v7.4s \n" \
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" fadd v0.4s, v0.4s, v2.4s \n" \
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" fadd v4.4s, v4.4s, v6.4s \n" \
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" fadd v0.4s, v0.4s, v4.4s \n" \
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" faddp v0.4s, v0.4s, v0.4s \n" \
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" faddp v0.4s, v0.4s, v0.4s \n"
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#else /* !defined(DSDOT) */
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#define KERNEL_F1 \
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" ldr "TMPX", ["X"] \n" \
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" ldr "TMPY", ["Y"] \n" \
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" add "X", "X", "INC_X" \n" \
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" add "Y", "Y", "INC_Y" \n" \
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" fcvt "TMPX1", "TMPX" \n" \
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" fcvt "TMPY1", "TMPY" \n" \
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" fmul "TMPX1", "TMPX1", "TMPY1" \n" \
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" fadd "DOTF", "DOTF", "TMPX1" \n"
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#define KERNEL_F \
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" ldp q18, q19, ["X"] \n" \
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" ldp q26, q27, ["Y"] \n" \
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" fcvtl v16.2d, v18.2s \n" \
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" fcvtl2 v17.2d, v18.4s \n" \
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" fcvtl v18.2d, v19.2s \n" \
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" fcvtl2 v19.2d, v19.4s \n" \
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" fcvtl v24.2d, v26.2s \n" \
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" fcvtl2 v25.2d, v26.4s \n" \
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" fcvtl v26.2d, v27.2s \n" \
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" fcvtl2 v27.2d, v27.4s \n" \
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" ldp q22, q23, ["X", #32] \n" \
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" ldp q30, q31, ["Y", #32] \n" \
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" fcvtl v20.2d, v22.2s \n" \
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" fcvtl2 v21.2d, v22.4s \n" \
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" fcvtl v22.2d, v23.2s \n" \
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" fcvtl2 v23.2d, v23.4s \n" \
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" fcvtl v28.2d, v30.2s \n" \
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" fcvtl2 v29.2d, v30.4s \n" \
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" fcvtl v30.2d, v31.2s \n" \
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" fcvtl2 v31.2d, v31.4s \n" \
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" PRFM PLDL1KEEP, ["X", #896] \n" \
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" PRFM PLDL1KEEP, ["Y", #896] \n" \
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" PRFM PLDL1KEEP, ["X", #896+64] \n" \
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" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
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" fmla v0.2d, v16.2d, v24.2d \n" \
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" fmla v1.2d, v17.2d, v25.2d \n" \
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" fmla v2.2d, v18.2d, v26.2d \n" \
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" fmla v3.2d, v19.2d, v27.2d \n" \
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" add "Y", "Y", #64 \n" \
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" add "X", "X", #64 \n" \
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" fmla v4.2d, v20.2d, v28.2d \n" \
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" fmla v5.2d, v21.2d, v29.2d \n" \
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" fmla v6.2d, v22.2d, v30.2d \n" \
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" fmla v7.2d, v23.2d, v31.2d \n"
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#define KERNEL_F_FINALIZE \
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" fadd v0.2d, v0.2d, v1.2d \n" \
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" fadd v2.2d, v2.2d, v3.2d \n" \
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" fadd v4.2d, v4.2d, v5.2d \n" \
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" fadd v6.2d, v6.2d, v7.2d \n" \
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" fadd v0.2d, v0.2d, v2.2d \n" \
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" fadd v4.2d, v4.2d, v6.2d \n" \
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" fadd v0.2d, v0.2d, v4.2d \n" \
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" faddp "DOTF", v0.2d \n"
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#endif /* !defined(DSDOT) */
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#else /* !defined(DOUBLE) */
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#define KERNEL_F1 \
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" ldr "TMPX", ["X"] \n" \
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" ldr "TMPY", ["Y"] \n" \
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" add "X", "X", "INC_X" \n" \
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" add "Y", "Y", "INC_Y" \n" \
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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#define KERNEL_F \
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" ldp q16, q17, ["X"] \n" \
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" ldp q24, q25, ["Y"] \n" \
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" ldp q18, q19, ["X", #32] \n" \
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" ldp q26, q27, ["Y", #32] \n" \
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" fmla v0.2d, v16.2d, v24.2d \n" \
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" fmla v1.2d, v17.2d, v25.2d \n" \
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" ldp q20, q21, ["X", #64] \n" \
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" ldp q28, q29, ["Y", #64] \n" \
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" fmla v2.2d, v18.2d, v26.2d \n" \
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" fmla v3.2d, v19.2d, v27.2d \n" \
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" ldp q22, q23, ["X", #96] \n" \
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" ldp q30, q31, ["Y", #96] \n" \
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" add "Y", "Y", #128 \n" \
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" add "X", "X", #128 \n" \
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" fmla v4.2d, v20.2d, v28.2d \n" \
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" fmla v5.2d, v21.2d, v29.2d \n" \
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" PRFM PLDL1KEEP, ["X", #896] \n" \
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" PRFM PLDL1KEEP, ["Y", #896] \n" \
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" PRFM PLDL1KEEP, ["X", #896+64] \n" \
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" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
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" fmla v6.2d, v22.2d, v30.2d \n" \
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" fmla v7.2d, v23.2d, v31.2d \n" \
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" ldp q16, q17, ["X"] \n" \
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" ldp q24, q25, ["Y"] \n" \
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" ldp q18, q19, ["X", #32] \n" \
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" ldp q26, q27, ["Y", #32] \n" \
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" fmla v0.2d, v16.2d, v24.2d \n" \
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" fmla v1.2d, v17.2d, v25.2d \n" \
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" ldp q20, q21, ["X", #64] \n" \
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" ldp q28, q29, ["Y", #64] \n" \
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" fmla v2.2d, v18.2d, v26.2d \n" \
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" fmla v3.2d, v19.2d, v27.2d \n" \
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" ldp q22, q23, ["X", #96] \n" \
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" ldp q30, q31, ["Y", #96] \n" \
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" add "Y", "Y", #128 \n" \
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" add "X", "X", #128 \n" \
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" fmla v4.2d, v20.2d, v28.2d \n" \
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" fmla v5.2d, v21.2d, v29.2d \n" \
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" PRFM PLDL1KEEP, ["X", #896] \n" \
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" PRFM PLDL1KEEP, ["Y", #896] \n" \
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" PRFM PLDL1KEEP, ["X", #896+64] \n" \
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" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
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" fmla v6.2d, v22.2d, v30.2d \n" \
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" fmla v7.2d, v23.2d, v31.2d \n"
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#define KERNEL_F_FINALIZE \
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" fadd v0.2d, v0.2d, v1.2d \n" \
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" fadd v2.2d, v2.2d, v3.2d \n" \
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" fadd v4.2d, v4.2d, v5.2d \n" \
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" fadd v6.2d, v6.2d, v7.2d \n" \
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" fadd v0.2d, v0.2d, v2.2d \n" \
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" fadd v4.2d, v4.2d, v6.2d \n" \
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" fadd v0.2d, v0.2d, v4.2d \n" \
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" faddp "DOTF", v0.2d \n"
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#endif /* !defined(DOUBLE) */
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#if defined(SMP)
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extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
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BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
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void *c, BLASLONG ldc, int (*function)(), int nthreads);
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#endif
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static RETURN_TYPE dot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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RETURN_TYPE dot = 0.0 ;
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if ( n < 0 ) return dot;
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__asm__ __volatile__ (
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" mov "N", %[N_] \n"
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" mov "X", %[X_] \n"
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" mov "INC_X", %[INCX_] \n"
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" mov "Y", %[Y_] \n"
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" mov "INC_Y", %[INCY_] \n"
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" fmov "DOTF", "REG0" \n"
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" fmov d1, xzr \n"
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" fmov d2, xzr \n"
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" fmov d3, xzr \n"
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" fmov d4, xzr \n"
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" fmov d5, xzr \n"
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" fmov d6, xzr \n"
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" fmov d7, xzr \n"
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" cmp "N", xzr \n"
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" ble 9f //dot_kernel_L999 \n"
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" cmp "INC_X", #1 \n"
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" bne 5f //dot_kernel_S_BEGIN \n"
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" cmp "INC_Y", #1 \n"
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" bne 5f //dot_kernel_S_BEGIN \n"
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"1: //dot_kernel_F_BEGIN: \n"
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" lsl "INC_X", "INC_X", "INC_SHIFT" \n"
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" lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
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" asr "J", "N", #"N_DIV_SHIFT" \n"
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" cmp "J", xzr \n"
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" beq 3f //dot_kernel_F1 \n"
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" .align 5 \n"
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"2: //dot_kernel_F: \n"
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" "KERNEL_F" \n"
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" subs "J", "J", #1 \n"
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" bne 2b //dot_kernel_F \n"
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" "KERNEL_F_FINALIZE" \n"
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"3: //dot_kernel_F1: \n"
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" ands "J", "N", #"N_REM_MASK" \n"
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" ble 9f //dot_kernel_L999 \n"
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"4: //dot_kernel_F10: \n"
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" "KERNEL_F1" \n"
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" subs "J", "J", #1 \n"
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" bne 4b //dot_kernel_F10 \n"
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" b 9f //dot_kernel_L999 \n"
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"5: //dot_kernel_S_BEGIN: \n"
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" lsl "INC_X", "INC_X", "INC_SHIFT" \n"
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" lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
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" asr "J", "N", #2 \n"
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" cmp "J", xzr \n"
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" ble 7f //dot_kernel_S1 \n"
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"6: //dot_kernel_S4: \n"
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" "KERNEL_F1" \n"
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" "KERNEL_F1" \n"
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" "KERNEL_F1" \n"
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" "KERNEL_F1" \n"
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" subs "J", "J", #1 \n"
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" bne 6b //dot_kernel_S4 \n"
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"7: //dot_kernel_S1: \n"
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" ands "J", "N", #3 \n"
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" ble 9f //dot_kernel_L999 \n"
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"8: //dot_kernel_S10: \n"
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" "KERNEL_F1" \n"
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" subs "J", "J", #1 \n"
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" bne 8b //dot_kernel_S10 \n"
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"9: //dot_kernel_L999: \n"
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" str "DOTF", [%[DOT_]] \n"
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:
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: [DOT_] "r" (&dot), //%0
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[N_] "r" (n), //%1
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[X_] "r" (x), //%2
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[INCX_] "r" (inc_x), //%3
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[Y_] "r" (y), //%4
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[INCY_] "r" (inc_y) //%5
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: "cc",
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"memory",
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"x0", "x1", "x2", "x3", "x4", "x5",
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"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
|
|
);
|
|
|
|
return dot;
|
|
}
|
|
|
|
#if defined(SMP)
|
|
static int dot_thread_function(BLASLONG n, BLASLONG dummy0,
|
|
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
|
|
BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
|
|
{
|
|
*(RETURN_TYPE *)result = dot_compute(n, x, inc_x, y, inc_y);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
RETURN_TYPE CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
|
|
{
|
|
#if defined(SMP)
|
|
int nthreads;
|
|
FLOAT dummy_alpha;
|
|
#endif
|
|
RETURN_TYPE dot = 0.0;
|
|
|
|
#if defined(SMP)
|
|
if (inc_x == 0 || inc_y == 0 || n <= 10000)
|
|
nthreads = 1;
|
|
else
|
|
nthreads = num_cpu_avail(1);
|
|
|
|
if (nthreads == 1) {
|
|
dot = dot_compute(n, x, inc_x, y, inc_y);
|
|
} else {
|
|
int mode, i;
|
|
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
|
|
RETURN_TYPE *ptr;
|
|
|
|
#if !defined(DOUBLE)
|
|
mode = BLAS_SINGLE | BLAS_REAL;
|
|
#else
|
|
mode = BLAS_DOUBLE | BLAS_REAL;
|
|
#endif
|
|
|
|
blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
|
|
x, inc_x, y, inc_y, result, 0,
|
|
( void *)dot_thread_function, nthreads);
|
|
|
|
ptr = (RETURN_TYPE *)result;
|
|
for (i = 0; i < nthreads; i++) {
|
|
dot = dot + (*ptr);
|
|
ptr = (RETURN_TYPE *)(((char *)ptr) + sizeof(double) * 2);
|
|
}
|
|
}
|
|
#else
|
|
dot = dot_compute(n, x, inc_x, y, inc_y);
|
|
#endif
|
|
|
|
return dot;
|
|
}
|