OpenBLAS/kernel/riscv64/gemm_tcopy_8_rvv.c

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#include "common.h"

#if !defined(DOUBLE)
#define FLOAT_V_T               vfloat32m2_t
#define FLOAT_V_T_HALF          vfloat32m1_t
#define VLEV_FLOAT              __riscv_vle32_v_f32m2
#define VLEV_FLOAT_HALF         __riscv_vle32_v_f32m1
#define VSEV_FLOAT              __riscv_vse32_v_f32m2
#define VSEV_FLOAT_HALF         __riscv_vse32_v_f32m1
#else
#define FLOAT_V_T               vfloat64m4_t
#define FLOAT_V_T_HALF          vfloat64m2_t
#define VLEV_FLOAT              __riscv_vle64_v_f64m4
#define VLEV_FLOAT_HALF         __riscv_vle64_v_f64m2
#define VSEV_FLOAT              __riscv_vse64_v_f64m4
#define VSEV_FLOAT_HALF         __riscv_vse64_v_f64m2
#endif

int CNAME(BLASLONG m, BLASLONG n, IFLOAT *a, BLASLONG lda, IFLOAT *b)
{
    BLASLONG i, j;

    IFLOAT *aoffset;
    IFLOAT *aoffset1;

    IFLOAT *boffset, *boffset1, *boffset2, *boffset3, *boffset4;

    FLOAT_V_T v0;
    FLOAT_V_T_HALF v1;

    // fprintf(stderr, "gemm_tcopy_8 m=%ld n=%ld lda=%ld\n", m, n, lda);

    aoffset   = a;
    boffset   = b;
    boffset2  = b + m  * (n & ~7);
    boffset3  = b + m  * (n & ~3);
    boffset4  = b + m  * (n & ~1);

    for(j = m; j > 0; j--) {
        aoffset1  = aoffset;
        boffset1  = boffset;

        aoffset += lda;
        boffset  += 8;

        for(i = (n >> 3); i > 0; i--) {
            size_t vl = 8;

            v0 = VLEV_FLOAT(aoffset1, vl);
            VSEV_FLOAT(boffset1, v0, vl);

            aoffset1 += 8;
            boffset1 += 8 * m;
        }

        if (n & 4) {
            size_t vl = 4;

            v1 = VLEV_FLOAT_HALF(aoffset1, vl);
            VSEV_FLOAT_HALF(boffset2, v1, vl);

            aoffset1 += 4;
            boffset2 += 4;
        }

        if (n & 2) {
            *(boffset3) = *(aoffset1);
            *(boffset3 + 1) = *(aoffset1 + 1);

            aoffset1 += 2;
            boffset3 += 2;
        }

        if (n & 1) {
            *(boffset4) = *(aoffset1);
            aoffset1 ++;
            boffset4 ++;
        }
    }

    return 0;
}