OpenBLAS/kernel/riscv64/zgemm_tcopy_4_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 FLOAT_VX2_T             vfloat32m1x2_t
#define FLOAT_VX4_T             vfloat32m1x4_t
#define FLOAT_VX8_T             vfloat32m1x8_t
#define VLEV_FLOAT              __riscv_vle32_v_f32m1
#define VSEV_FLOAT              __riscv_vse32_v_f32m1
#define VLSSEG2_FLOAT           __riscv_vlsseg2e32_v_f32m1x2
#define VLSSEG4_FLOAT           __riscv_vlsseg4e32_v_f32m1x4
#define VLSSEG8_FLOAT           __riscv_vlsseg8e32_v_f32m1x8
#define VSSEG2_FLOAT            __riscv_vsseg2e32_v_f32m1x2
#define VSSEG4_FLOAT            __riscv_vsseg4e32_v_f32m1x4
#define VSSEG8_FLOAT            __riscv_vsseg8e32_v_f32m1x8
#else
#define VSETVL(n)               __riscv_vsetvl_e64m1(n)
#define FLOAT_V_T               vfloat64m1_t
#define FLOAT_VX2_T             vfloat64m1x2_t
#define FLOAT_VX4_T             vfloat64m1x4_t
#define FLOAT_VX8_T             vfloat64m1x8_t
#define VLEV_FLOAT              __riscv_vle64_v_f64m1
#define VSEV_FLOAT              __riscv_vse64_v_f64m1
#define VLSSEG2_FLOAT           __riscv_vlsseg2e64_v_f64m1x2
#define VLSSEG4_FLOAT           __riscv_vlsseg4e64_v_f64m1x4
#define VLSSEG8_FLOAT           __riscv_vlsseg8e64_v_f64m1x8
#define VSSEG2_FLOAT            __riscv_vsseg2e64_v_f64m1x2
#define VSSEG4_FLOAT            __riscv_vsseg4e64_v_f64m1x4
#define VSSEG8_FLOAT            __riscv_vsseg8e64_v_f64m1x8
#endif

int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, FLOAT *b){

    BLASLONG i, j;

    IFLOAT *aoffset;
    IFLOAT *aoffset1;

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

    FLOAT_V_T v0;
    FLOAT_VX2_T vx2;
    FLOAT_VX4_T vx4;
    FLOAT_VX8_T vx8;

    size_t vl;

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

    aoffset   = a;
    boffset   = b;
    boffset2  = b + 2 * m  * (n & ~3);
    boffset3  = b + 2 * m  * (n & ~1);

    for(j = (m >> 2); j > 0; j--) {

        aoffset1  = aoffset;
        aoffset += 8 * lda;

        boffset1  = boffset;
        boffset  += 32;

        for(i = (n >> 2); i > 0; i--) {
            vl = 4;

            vx8 = VLSSEG8_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG8_FLOAT(boffset1, vx8, vl);

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

        if (n & 2) {
            vl = 4;

            vx4 = VLSSEG4_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG4_FLOAT(boffset2, vx4, vl);

            aoffset1 += 4;
            boffset2 += 16;
        }

        if (n & 1) {
            vl = 4;

            vx2 = VLSSEG2_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG2_FLOAT(boffset3, vx2, vl);

            aoffset1 += 2;
            boffset3 += 8;
        }
    }

    if (m & 2) {
        aoffset1  = aoffset;
        aoffset += 4 * lda;

        boffset1  = boffset;
        boffset  += 16;

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

            vx8 = VLSSEG8_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG8_FLOAT(boffset1, vx8, vl);

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

        if (n & 2) {
            vl = 2;

            vx4 = VLSSEG4_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG4_FLOAT(boffset2, vx4, vl);

            aoffset1 += 4;
            boffset2 += 8;
        }

        if (n & 1) {
            vl = 2;

            vx2 = VLSSEG2_FLOAT(aoffset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG2_FLOAT(boffset3, vx2, vl);

            //aoffset1 += 2;
            boffset3 += 4;
        }
    }

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

        for(i = (n >> 2); i > 0; i--) {
            vl = 8;

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

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

        if (n & 2) {
            vl = 4;

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

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

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

    return 0;
}