OpenBLAS/kernel/mips/dgemm_ncopy_8_msa.c

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#include "common.h"
#include "macros_msa.h"

int CNAME(BLASLONG m, BLASLONG n, FLOAT * __restrict src, BLASLONG lda,
          FLOAT *  __restrict dst)
{
    BLASLONG i, j;
    FLOAT *psrc0, *psrc1, *psrc2, *psrc3, *psrc4, *psrc5, *psrc6, *psrc7;
    FLOAT *psrc8, *pdst;
    v2f64 src0, src1, src2, src3, src4, src5, src6, src7;
    v2f64 src8, src9, src10, src11, src12, src13, src14, src15;
    v2f64 dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;

    psrc0 = src;
    pdst = dst;

    for (j = (n >> 3); j--;)
    {
        psrc1 = psrc0;
        psrc2 = psrc1 + lda;
        psrc3 = psrc2 + lda;
        psrc4 = psrc3 + lda;
        psrc5 = psrc4 + lda;
        psrc6 = psrc5 + lda;
        psrc7 = psrc6 + lda;
        psrc8 = psrc7 + lda;
        psrc0 += 8 * lda;

        for (i = (m >> 3); i--;)
        {
            LD_DP2_INC(psrc1, 2, src0, src1);
            LD_DP2_INC(psrc2, 2, src2, src3);
            LD_DP2_INC(psrc3, 2, src4, src5);
            LD_DP2_INC(psrc4, 2, src6, src7);
            LD_DP2_INC(psrc5, 2, src8, src9);
            LD_DP2_INC(psrc6, 2, src10, src11);
            LD_DP2_INC(psrc7, 2, src12, src13);
            LD_DP2_INC(psrc8, 2, src14, src15);

            ILVRL_D2_DP(src2, src0, dst0, dst4);
            ILVRL_D2_DP(src6, src4, dst1, dst5);
            ILVRL_D2_DP(src10, src8, dst2, dst6);
            ILVRL_D2_DP(src14, src12, dst3, dst7);

            ST_DP8_INC(dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7, pdst, 2);

            ILVRL_D2_DP(src3, src1, dst0, dst4);
            ILVRL_D2_DP(src7, src5, dst1, dst5);
            ILVRL_D2_DP(src11, src9, dst2, dst6);
            ILVRL_D2_DP(src15, src13, dst3, dst7);

            ST_DP8_INC(dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7, pdst, 2);

            LD_DP2_INC(psrc1, 2, src0, src1);
            LD_DP2_INC(psrc2, 2, src2, src3);
            LD_DP2_INC(psrc3, 2, src4, src5);
            LD_DP2_INC(psrc4, 2, src6, src7);
            LD_DP2_INC(psrc5, 2, src8, src9);
            LD_DP2_INC(psrc6, 2, src10, src11);
            LD_DP2_INC(psrc7, 2, src12, src13);
            LD_DP2_INC(psrc8, 2, src14, src15);

            ILVRL_D2_DP(src2, src0, dst0, dst4);
            ILVRL_D2_DP(src6, src4, dst1, dst5);
            ILVRL_D2_DP(src10, src8, dst2, dst6);
            ILVRL_D2_DP(src14, src12, dst3, dst7);

            ST_DP8_INC(dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7, pdst, 2);

            ILVRL_D2_DP(src3, src1, dst0, dst4);
            ILVRL_D2_DP(src7, src5, dst1, dst5);
            ILVRL_D2_DP(src11, src9, dst2, dst6);
            ILVRL_D2_DP(src15, src13, dst3, dst7);

            ST_DP8_INC(dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7, pdst, 2);
        }

        for (i = (m & 7); i--;)
        {
            *pdst++ = *psrc1++;
            *pdst++ = *psrc2++;
            *pdst++ = *psrc3++;
            *pdst++ = *psrc4++;
            *pdst++ = *psrc5++;
            *pdst++ = *psrc6++;
            *pdst++ = *psrc7++;
            *pdst++ = *psrc8++;
        }
    }

    if (n & 4)
    {
        psrc1 = psrc0;
        psrc2 = psrc1 + lda;
        psrc3 = psrc2 + lda;
        psrc4 = psrc3 + lda;
        psrc0 += 4 * lda;

        for (i = (m >> 2); i--;)
        {
            LD_DP2_INC(psrc1, 2, src0, src1);
            LD_DP2_INC(psrc2, 2, src2, src3);
            LD_DP2_INC(psrc3, 2, src4, src5);
            LD_DP2_INC(psrc4, 2, src6, src7);

            ILVRL_D2_DP(src2, src0, dst0, dst4);
            ILVRL_D2_DP(src6, src4, dst1, dst5);
            ILVRL_D2_DP(src3, src1, dst2, dst6);
            ILVRL_D2_DP(src7, src5, dst3, dst7);

            ST_DP8_INC(dst0, dst1, dst4, dst5, dst2, dst3, dst6, dst7, pdst, 2);
        }

        for (i = (m & 3); i--;)
        {
            *pdst++ = *psrc1++;
            *pdst++ = *psrc2++;
            *pdst++ = *psrc3++;
            *pdst++ = *psrc4++;
        }
    }

    if (n & 2)
    {
        psrc1 = psrc0;
        psrc2 = psrc1 + lda;
        psrc0 += 2 * lda;

        for (i = (m >> 1); i--;)
        {
            src0 = LD_DP(psrc1);
            src1 = LD_DP(psrc2);
            psrc1 += 2;
            psrc2 += 2;

            ILVRL_D2_DP(src1, src0, dst0, dst1);

            ST_DP2_INC(dst0, dst1, pdst, 2);
        }

        if (m & 1)
        {
            *pdst++ = *psrc1++;
            *pdst++ = *psrc2++;
        }
    }

    if (n & 1)
    {
        psrc1 = psrc0;

        for (i = m; i--;)
        {
            *pdst++ = *psrc1++;
        }
    }

    return 0;
}