OpenBLAS/kernel/riscv64/gemm_tcopy_8_rvv.c

/***************************************************************************
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#include "common.h"

#if !defined(DOUBLE)
#define VSETVL(n)               __riscv_vsetvl_e32m1(n)
#define FLOAT_V_T               vfloat32m1_t
#define VLEV_FLOAT              __riscv_vle32_v_f32m1
#define VLSEV_FLOAT             __riscv_vlse32_v_f32m1
#define VSEV_FLOAT              __riscv_vse32_v_f32m1
#define VLSSEG2_FLOAT           __riscv_vlsseg2e32_v_f32m1
#define VSSEG2_FLOAT            __riscv_vsseg2e32_v_f32m1
#define VLSSEG4_FLOAT           __riscv_vlsseg4e32_v_f32m1
#define VSSEG4_FLOAT            __riscv_vsseg4e32_v_f32m1
#define VLSSEG8_FLOAT           __riscv_vlsseg8e32_v_f32m1
#define VSSEG8_FLOAT            __riscv_vsseg8e32_v_f32m1
#else
#define VSETVL(n)               __riscv_vsetvl_e64m1(n)
#define FLOAT_V_T               vfloat64m1_t
#define VLEV_FLOAT              __riscv_vle64_v_f64m1
#define VLSEV_FLOAT             __riscv_vlse64_v_f64m1
#define VSEV_FLOAT              __riscv_vse64_v_f64m1
#define VLSSEG2_FLOAT           __riscv_vlsseg2e64_v_f64m1
#define VSSEG2_FLOAT            __riscv_vsseg2e64_v_f64m1
#define VLSSEG4_FLOAT           __riscv_vlsseg4e64_v_f64m1
#define VSSEG4_FLOAT            __riscv_vsseg4e64_v_f64m1
#define VLSSEG8_FLOAT           __riscv_vlsseg8e64_v_f64m1
#define VSSEG8_FLOAT            __riscv_vsseg8e64_v_f64m1
#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, v1, v2, v3, v4, v5, v6, v7;

    // 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 >> 3); j > 0; j--) {

        aoffset1  = aoffset;
        aoffset += 8 * lda;

        boffset1  = boffset;
        boffset  += 64;

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

            VLSSEG8_FLOAT(&v0, &v1, &v2, &v3, &v4, &v5, &v6, &v7, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG8_FLOAT(boffset1, v0, v1, v2, v3, v4, v5, v6, v7, vl);

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

        if (n & 4) {
            size_t vl = 8;

            VLSSEG4_FLOAT(&v0, &v1, &v2, &v3, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG4_FLOAT(boffset2, v0, v1, v2, v3, vl);

            aoffset1 += 4;
            boffset2 += 32;
        }

        if (n & 2) {
            size_t vl = 8;

            VLSSEG2_FLOAT(&v0, &v1, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG2_FLOAT(boffset3, v0, v1, vl);

            aoffset1 += 2;
            boffset3 += 16;
        }

        if (n & 1) {
            size_t vl = 8;

            v0 = VLSEV_FLOAT(aoffset1, lda * sizeof(FLOAT), vl);
            VSEV_FLOAT(boffset4, v0, vl);

            aoffset1 += 1;
            boffset4 += 8;
        }

    }

    if (m & 4) {

        aoffset1  = aoffset;
        aoffset += 4 * lda;

        boffset1  = boffset;
        boffset  += 32;

        for(i = (n >> 3); i > 0; i--) {
            size_t vl = 4;

            VLSSEG8_FLOAT(&v0, &v1, &v2, &v3, &v4, &v5, &v6, &v7, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG8_FLOAT(boffset1, v0, v1, v2, v3, v4, v5, v6, v7, vl);

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

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

            VLSSEG4_FLOAT(&v0, &v1, &v2, &v3, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG4_FLOAT(boffset2, v0, v1, v2, v3, vl);

            aoffset1 += 4;
            boffset2 += 16;
        }

        if (n & 2) {
            size_t vl = 4;

            VLSSEG2_FLOAT(&v0, &v1, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG2_FLOAT(boffset3, v0, v1, vl);

            aoffset1 += 2;
            boffset3 += 8;
	}

        if (n & 1) {
            size_t vl = 4;

            v0 = VLSEV_FLOAT(aoffset1, lda * sizeof(FLOAT), vl);
            VSEV_FLOAT(boffset4, v0, vl);

            aoffset1 += 1;
            boffset4 += 4;
        }
    }

    if (m & 2) {
        aoffset1  = aoffset;
        aoffset += 2 * lda;

        boffset1  = boffset;
        boffset  += 16;

        for(i = (n >> 3); i > 0; i--) {
            size_t vl = 2;

            VLSSEG8_FLOAT(&v0, &v1, &v2, &v3, &v4, &v5, &v6, &v7, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG8_FLOAT(boffset1, v0, v1, v2, v3, v4, v5, v6, v7, vl);

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

        if (n & 4) {
            size_t vl = 2;

            VLSSEG4_FLOAT(&v0, &v1, &v2, &v3, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG4_FLOAT(boffset2, v0, v1, v2, v3, vl);

            aoffset1 += 4;
            boffset2 += 8;
        }

        if (n & 2) {
            size_t vl = 2;

            VLSSEG2_FLOAT(&v0, &v1, aoffset1, lda * sizeof(FLOAT), vl);
            VSSEG2_FLOAT(boffset3, v0, v1, vl);

            aoffset1 += 2;
            boffset3 += 4;
	}
  
        if (n & 1) {
           size_t vl = 2;

            v0 = VLSEV_FLOAT(aoffset1, lda * sizeof(FLOAT), vl);
            VSEV_FLOAT(boffset4, v0, vl);

            aoffset1 += 1;
            boffset4 += 2;
        }
    }

    if (m & 1) {
        aoffset1  = aoffset;
        boffset1  = boffset;

        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;

            v0 = VLEV_FLOAT(aoffset1, vl);
            VSEV_FLOAT(boffset2, v0, vl);

            aoffset1 += 4;
            //boffset2 += 4;
        }

        if (n & 2) {
            size_t vl = 2;

            v0 = VLEV_FLOAT(aoffset1, vl);
            VSEV_FLOAT(boffset3, v0, vl);

            aoffset1 += 2;
           // boffset3 += 2;
        }

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

    return 0;
}