102 lines
4.0 KiB
C
102 lines
4.0 KiB
C
/***************************************************************************
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Copyright (c) 2022, 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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#if !defined(DOUBLE)
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#define VSETVL(n) __riscv_vsetvl_e32m2(n)
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#define VSETVL_MAX __riscv_vsetvlmax_e32m2()
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#define FLOAT_V_T vfloat32m2_t
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#define VLEV_FLOAT __riscv_vle32_v_f32m2
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#define VSEV_FLOAT __riscv_vse32_v_f32m2
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#define VLSEV_FLOAT __riscv_vlse32_v_f32m2
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#define INT_V_T vint32m2_t
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#define VID_V_INT __riscv_vid_v_i32m2
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#define VADD_VX_INT __riscv_vadd_vx_i32m2
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#define VMSGT_VX_INT __riscv_vmsgt_vx_i32m2_b16
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#define VBOOL_T vbool16_t
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#define VMERGE_VVM_FLOAT __riscv_vmerge_vvm_f32m2
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#else
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#define VSETVL(n) __riscv_vsetvl_e64m2(n)
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#define VSETVL_MAX __riscv_vsetvlmax_e64m2()
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#define FLOAT_V_T vfloat64m2_t
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#define VLEV_FLOAT __riscv_vle64_v_f64m2
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#define VSEV_FLOAT __riscv_vse64_v_f64m2
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#define VLSEV_FLOAT __riscv_vlse64_v_f64m2
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#define INT_V_T vint64m2_t
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#define VID_V_INT __riscv_vid_v_i64m2
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#define VADD_VX_INT __riscv_vadd_vx_i64m2
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#define VMSGT_VX_INT __riscv_vmsgt_vx_i64m2_b32
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#define VBOOL_T vbool32_t
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#define VMERGE_VVM_FLOAT __riscv_vmerge_vvm_f64m2
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#endif
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// Optimizes the implementation in ../generic/symm_lcopy_4.c
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int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG posX, BLASLONG posY, FLOAT *b)
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{
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BLASLONG i, js, offset;
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FLOAT *ao1, *ao2;
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BLASLONG stride_lda = sizeof(FLOAT)*lda;
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FLOAT_V_T vb, va1, va2;
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VBOOL_T vbool;
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INT_V_T vindex_max, vindex;
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size_t vl = VSETVL_MAX;
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vindex_max = VID_V_INT(vl);
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for (js = n; js > 0; js -= vl, posX += vl) {
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vl = VSETVL(js);
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offset = posX - posY;
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ao1 = a + posX + posY * lda;
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ao2 = a + posY + (posX) * lda;
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for (i = m; i > 0; i--, offset--) {
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va2 = VLSEV_FLOAT(ao2, stride_lda, vl);
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va1 = VLEV_FLOAT(ao1, vl);
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// offset > (0 - vindex) ---> (offset + vindex) > 0
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vindex = VADD_VX_INT(vindex_max, offset, vl);
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vbool = VMSGT_VX_INT(vindex, 0, vl);
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vb = VMERGE_VVM_FLOAT(va2, va1, vbool, vl);
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VSEV_FLOAT(b, vb, vl);
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b += vl;
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ao1 += lda;
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ao2++;
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}
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}
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return 0;
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}
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