OpenBLAS/kernel/mips/cgemm_ncopy_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, *pdst;
    FLOAT ctemp01, ctemp02, ctemp03, ctemp04;
    FLOAT ctemp05, ctemp06, ctemp07, ctemp08;
    v4f32 src0, src1, src2, src3, src4, src5, src6, src7;
    v4f32 dst0, dst1, dst4, dst5;

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

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

        for (i = (m >> 2); i--;)
        {
            LD_SP2_INC(psrc1, 4, src0, src1);
            LD_SP2_INC(psrc2, 4, src2, src3);
            LD_SP2_INC(psrc3, 4, src4, src5);
            LD_SP2_INC(psrc4, 4, src6, src7);

            ILVRL_D2_SP(src2, src0, dst0, dst4);
            ILVRL_D2_SP(src6, src4, dst1, dst5);

            ST_SP4_INC(dst0, dst1, dst4, dst5, pdst, 4);

            ILVRL_D2_SP(src3, src1, dst0, dst4);
            ILVRL_D2_SP(src7, src5, dst1, dst5);

            ST_SP4_INC(dst0, dst1, dst4, dst5, pdst, 4);
        }

        if (m & 2)
        {
            src0 = LD_SP(psrc1);
            src2 = LD_SP(psrc2);
            src4 = LD_SP(psrc3);
            src6 = LD_SP(psrc4);
            psrc1 += 4;
            psrc2 += 4;
            psrc3 += 4;
            psrc4 += 4;

            ILVRL_D2_SP(src2, src0, dst0, dst4);
            ILVRL_D2_SP(src6, src4, dst1, dst5);

            ST_SP4_INC(dst0, dst1, dst4, dst5, pdst, 4);
        }

        if (m & 1)
        {
            ctemp01 = *(psrc1 + 0);
            ctemp02 = *(psrc1 + 1);
            ctemp03 = *(psrc2 + 0);
            ctemp04 = *(psrc2 + 1);
            ctemp05 = *(psrc3 + 0);
            ctemp06 = *(psrc3 + 1);
            ctemp07 = *(psrc4 + 0);
            ctemp08 = *(psrc4 + 1);
            psrc1 += 2;
            psrc2 += 2;
            psrc3 += 2;
            psrc4 += 2;

            *(pdst + 0) = ctemp01;
            *(pdst + 1) = ctemp02;
            *(pdst + 2) = ctemp03;
            *(pdst + 3) = ctemp04;
            *(pdst + 4) = ctemp05;
            *(pdst + 5) = ctemp06;
            *(pdst + 6) = ctemp07;
            *(pdst + 7) = ctemp08;
            pdst += 8;
        }
    }

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

        for (i = (m >> 2); i--;)
        {
            LD_SP2_INC(psrc1, 4, src0, src1);
            LD_SP2_INC(psrc2, 4, src2, src3);

            ILVRL_D2_SP(src2, src0, dst0, dst4);

            ST_SP2_INC(dst0, dst4, pdst, 4);

            ILVRL_D2_SP(src3, src1, dst0, dst4);

            ST_SP2_INC(dst0, dst4, pdst, 4);
        }

        if (m & 2)
        {
            src0 = LD_SP(psrc1);
            src2 = LD_SP(psrc2);
            psrc1 += 4;
            psrc2 += 4;

            ILVRL_D2_SP(src2, src0, dst0, dst4);

            ST_SP2_INC(dst0, dst4, pdst, 4);
        }

        if (m & 1)
        {
            ctemp01 = *(psrc1 + 0);
            ctemp02 = *(psrc1 + 1);
            ctemp03 = *(psrc2 + 0);
            ctemp04 = *(psrc2 + 1);
            psrc1 += 2;
            psrc2 += 2;

            *(pdst + 0) = ctemp01;
            *(pdst + 1) = ctemp02;
            *(pdst + 2) = ctemp03;
            *(pdst + 3) = ctemp04;
            pdst += 4;
        }
    }

    if (n & 1)
    {
        psrc1 = psrc0;

        for (i = (m >> 2); i--;)
        {
            LD_SP2_INC(psrc1, 4, src0, src1);
            ST_SP2_INC(src0, src1, pdst, 4);
        }

        if (m & 2)
        {
            src0 = LD_SP(psrc1);
            psrc1 += 4;

            ST_SP(src0, pdst);
            pdst += 4;
        }

        if (m & 1)
        {
            ctemp01 = *(psrc1 + 0);
            ctemp02 = *(psrc1 + 1);
            psrc1 += 2;

            *(pdst + 0) = ctemp01;
            *(pdst + 1) = ctemp02;
            pdst += 2;
        }
    }

    return 0;
}