OpenBLAS/kernel/mips/zgemm_tcopy_4_msa.c

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

int CNAME(BLASLONG m, BLASLONG n, FLOAT *src, BLASLONG lda, FLOAT *dst)
{
    BLASLONG i, j;
    FLOAT *psrc0, *psrc1, *psrc2, *psrc3, *psrc4;
    FLOAT *pdst0, *pdst1, *pdst2, *pdst3;
    v2f64 src0, src1, src2, src3, src4, src5, src6, src7;
    v2f64 src8, src9, src10, src11, src12, src13, src14, src15;

    psrc0 = src;
    pdst0 = dst;
    lda *= 2;

    pdst2 = dst + 2 * m  * (n & ~3);
    pdst3 = dst + 2 * m  * (n & ~1);

    for (j = (m >> 2); j--;)
    {
        psrc1 = psrc0;
        psrc2 = psrc1 + lda;
        psrc3 = psrc2 + lda;
        psrc4 = psrc3 + lda;
        psrc0 += 4 * lda;

        pdst1 = pdst0;
        pdst0 += 32;

        for (i = (n >> 2); i--;)
        {
            LD_DP4_INC(psrc1, 2, src0, src1, src2, src3);
            LD_DP4_INC(psrc2, 2, src4, src5, src6, src7);
            LD_DP4_INC(psrc3, 2, src8, src9, src10, src11);
            LD_DP4_INC(psrc4, 2, src12, src13, src14, src15);

            ST_DP8(src0, src1, src2, src3, src4, src5, src6, src7, pdst1, 2);
            ST_DP8(src8, src9, src10, src11, src12, src13, src14, src15,
                   pdst1 + 16, 2);
            pdst1 += m * 8;
        }

        if (n & 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);

            ST_DP8_INC(src0, src1, src2, src3, src4, src5, src6, src7, pdst2, 2);
        }

        if (n & 1)
        {
            src0 = LD_DP(psrc1);
            src1 = LD_DP(psrc2);
            src2 = LD_DP(psrc3);
            src3 = LD_DP(psrc4);
            psrc1 += 2;
            psrc2 += 2;
            psrc3 += 2;
            psrc4 += 2;

            ST_DP4_INC(src0, src1, src2, src3, pdst3, 2);
        }
    }

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

        pdst1 = pdst0;
        pdst0 += 16;

        for (i = (n >> 2); i--;)
        {
            LD_DP4_INC(psrc1, 2, src0, src1, src2, src3);
            LD_DP4_INC(psrc2, 2, src4, src5, src6, src7);

            ST_DP8(src0, src1, src2, src3, src4, src5, src6, src7, pdst1, 2);

            pdst1 += m * 8;
        }

        if (n & 2)
        {
            LD_DP2_INC(psrc1, 2, src0, src1);
            LD_DP2_INC(psrc2, 2, src2, src3);

            ST_DP4_INC(src0, src1, src2, src3, pdst2, 2);
        }

        if (n & 1)
        {
            src0 = LD_DP(psrc1);
            src1 = LD_DP(psrc2);

            ST_DP2_INC(src0, src1, pdst3, 2);

            psrc1 += 2;
            psrc2 += 2;
        }
    }

    if (m & 1)
    {
        psrc1 = psrc0;
        pdst1 = pdst0;

        for (i = (n >> 2); i--;)
        {
            LD_DP4_INC(psrc1, 2, src0, src1, src2, src3);
            ST_DP4(src0, src1, src2, src3, pdst1, 2);

            pdst1 += m * 8;
        }

        if (n & 2)
        {
            LD_DP2_INC(psrc1, 2, src0, src1);
            ST_DP2_INC(src0, src1, pdst2, 2);
        }

        if (n & 1)
        {
            src0 = LD_DP(psrc1);
            ST_DP(src0, pdst3);
        }
    }

    return 0;
}