OpenBLAS/kernel/mips/sgemm_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;
    FLOAT *psrc1, *psrc2, *psrc3, *psrc4;
    FLOAT *psrc5, *psrc6, *psrc7, *psrc8;
    FLOAT *pdst;
    v4f32 src0, src1, src2, src3, src4, src5, src6, src7;
    v4f32 src8, src9, src10, src11, src12, src13, src14, src15;
    v4f32 dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;
    v4f32 dst8, dst9, dst10, dst11, dst12, dst13, dst14, dst15;

    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_SP2(psrc1, 4, src0, src1);
            LD_SP2(psrc2, 4, src2, src3);
            LD_SP2(psrc3, 4, src4, src5);
            LD_SP2(psrc4, 4, src6, src7);
            LD_SP2(psrc5, 4, src8, src9);
            LD_SP2(psrc6, 4, src10, src11);
            LD_SP2(psrc7, 4, src12, src13);
            LD_SP2(psrc8, 4, src14, src15);
            psrc1 += 8;
            psrc2 += 8;
            psrc3 += 8;
            psrc4 += 8;
            psrc5 += 8;
            psrc6 += 8;
            psrc7 += 8;
            psrc8 += 8;

            TRANSPOSE4x4_SP_SP(src0, src2, src4, src6, dst0, dst2, dst4, dst6);
            TRANSPOSE4x4_SP_SP(src8, src10, src12, src14, dst1, dst3, dst5,
                               dst7);
            TRANSPOSE4x4_SP_SP(src1, src3, src5, src7, dst8, dst10, dst12,
                               dst14);
            TRANSPOSE4x4_SP_SP(src9, src11, src13, src15, dst9, dst11, dst13,
                               dst15);

            ST_SP2(dst0, dst1, pdst, 4);
            ST_SP2(dst2, dst3, pdst + 8, 4);
            ST_SP2(dst4, dst5, pdst + 16, 4);
            ST_SP2(dst6, dst7, pdst + 24, 4);
            ST_SP2(dst8, dst9, pdst + 32, 4);
            ST_SP2(dst10, dst11, pdst + 40, 4);
            ST_SP2(dst12, dst13, pdst + 48, 4);
            ST_SP2(dst14, dst15, pdst + 56, 4);
            pdst += 64;
        }

        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--;)
        {
            src0 = LD_SP(psrc1);
            src1 = LD_SP(psrc2);
            src2 = LD_SP(psrc3);
            src3 = LD_SP(psrc4);
            psrc1 += 4;
            psrc2 += 4;
            psrc3 += 4;
            psrc4 += 4;

            TRANSPOSE4x4_SP_SP(src0, src1, src2, src3, dst0, dst1, dst2, dst3);

            ST_SP2(dst0, dst1, pdst, 4);
            ST_SP2(dst2, dst3, pdst + 8, 4);
            pdst += 16;
        }

        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--;)
        {
            *pdst++ = *psrc1++;
            *pdst++ = *psrc2++;
            *pdst++ = *psrc1++;
            *pdst++ = *psrc2++;
        }

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

    if (n & 1)
    {
        psrc1 = psrc0;

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

    return 0;
}