OpenBLAS/kernel/riscv64/zgemv_t_rvv.c

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

#if !defined(DOUBLE)
#define VSETVL(n)               __riscv_vsetvl_e32m4(n)
#define VSETVL_MAX_M1           __riscv_vsetvlmax_e32m1()
#define FLOAT_V_T               vfloat32m4_t
#define FLOAT_V_T_M1            vfloat32m1_t
#define FLOAT_VX2_T             vfloat32m4x2_t
#define VGET_VX2                __riscv_vget_v_f32m4x2_f32m4
#define VLSEG_FLOAT             __riscv_vlseg2e32_v_f32m4x2
#define VLSSEG_FLOAT            __riscv_vlsseg2e32_v_f32m4x2
#define VFREDSUM_FLOAT_TU       __riscv_vfredusum_vs_f32m4_f32m1_tu
#define VFMACCVV_FLOAT_TU       __riscv_vfmacc_vv_f32m4_tu
#define VFNMSACVV_FLOAT_TU      __riscv_vfnmsac_vv_f32m4_tu
#define VFMVVF_FLOAT            __riscv_vfmv_v_f_f32m4
#define VFMVVF_FLOAT_M1         __riscv_vfmv_v_f_f32m1
#define VFMULVV_FLOAT           __riscv_vfmul_vv_f32m4
#define VFMVFS_FLOAT_M1         __riscv_vfmv_f_s_f32m1_f32
#else
#define VSETVL(n)               __riscv_vsetvl_e64m4(n)
#define VSETVL_MAX_M1           __riscv_vsetvlmax_e64m1()
#define FLOAT_V_T               vfloat64m4_t
#define FLOAT_V_T_M1            vfloat64m1_t
#define FLOAT_VX2_T             vfloat64m4x2_t
#define VGET_VX2                __riscv_vget_v_f64m4x2_f64m4
#define VLSEG_FLOAT             __riscv_vlseg2e64_v_f64m4x2
#define VLSSEG_FLOAT            __riscv_vlsseg2e64_v_f64m4x2
#define VFREDSUM_FLOAT_TU       __riscv_vfredusum_vs_f64m4_f64m1_tu
#define VFMACCVV_FLOAT_TU       __riscv_vfmacc_vv_f64m4_tu
#define VFNMSACVV_FLOAT_TU      __riscv_vfnmsac_vv_f64m4_tu
#define VFMVVF_FLOAT            __riscv_vfmv_v_f_f64m4
#define VFMVVF_FLOAT_M1         __riscv_vfmv_v_f_f64m1
#define VFMULVV_FLOAT           __riscv_vfmul_vv_f64m4
#define VFMVFS_FLOAT_M1         __riscv_vfmv_f_s_f64m1_f64
#endif

int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha_r, FLOAT alpha_i, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
{
    BLASLONG i = 0, j = 0;
    BLASLONG ix = 0, iy = 0;
    FLOAT *a_ptr = a;
    FLOAT temp_r, temp_i;

    FLOAT_V_T va0, va1, vx0, vx1, vr, vi; 
    FLOAT_V_T_M1 v_res, v_z0;
    FLOAT_VX2_T vxx2, vax2;

    BLASLONG stride_x = inc_x * sizeof(FLOAT) * 2;
    //BLASLONG stride_a = sizeof(FLOAT) * 2;
    BLASLONG inc_y2 = inc_y * 2;
    BLASLONG lda2 = lda * 2;

    size_t vlmax = VSETVL_MAX_M1;
    v_res = VFMVVF_FLOAT_M1(0, vlmax);
    v_z0 = VFMVVF_FLOAT_M1(0, vlmax);
    vlmax = VSETVL(m);

    if (inc_x == 1)
    {
        for(i = 0; i < n; i++) {    
            j = 0;
            ix = 0;
            vr = VFMVVF_FLOAT(0, vlmax);
            vi = VFMVVF_FLOAT(0, vlmax);
            for(size_t vl, k = m; k > 0; k -= vl) {
                vl = VSETVL(k);

                vax2 = VLSEG_FLOAT(&a_ptr[j], vl);
                vxx2 = VLSEG_FLOAT(&x[ix], vl);

                va0 = VGET_VX2(vax2, 0);
                va1 = VGET_VX2(vax2, 1);
                vx0 = VGET_VX2(vxx2, 0);
                vx1 = VGET_VX2(vxx2, 1);

#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
                vr = VFMACCVV_FLOAT_TU(vr, va0, vx0, vl);
                vr = VFNMSACVV_FLOAT_TU(vr, va1, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va0, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va1, vx0, vl);
#else
                vr = VFMACCVV_FLOAT_TU(vr, va0, vx0, vl);
                vr = VFMACCVV_FLOAT_TU(vr, va1, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va0, vx1, vl);
                vi = VFNMSACVV_FLOAT_TU(vi, va1, vx0, vl);
#endif
                j += vl * 2;
                ix += vl * inc_x * 2;
            }
            
            v_res = VFREDSUM_FLOAT_TU(v_res, vr, v_z0, vlmax);
            temp_r = VFMVFS_FLOAT_M1(v_res);
            v_res = VFREDSUM_FLOAT_TU(v_res, vi, v_z0, vlmax);
            temp_i = VFMVFS_FLOAT_M1(v_res);

#if !defined(XCONJ)
            y[iy]   += alpha_r * temp_r - alpha_i * temp_i;
            y[iy+1] += alpha_r * temp_i + alpha_i * temp_r;
#else
            y[iy]   += alpha_r * temp_r + alpha_i * temp_i;
            y[iy+1] -= alpha_r * temp_i - alpha_i * temp_r;
#endif
            iy += inc_y2;
            a_ptr += lda2;
        }
    }
    else
    {
        for(i = 0; i < n; i++) {    
            j = 0;
            ix = 0;
            vr = VFMVVF_FLOAT(0, vlmax);
            vi = VFMVVF_FLOAT(0, vlmax);
            for(size_t vl, k = m; k > 0; k -= vl) {
                vl = VSETVL(k);
    
                vax2 = VLSEG_FLOAT(&a_ptr[j], vl);
                vxx2 = VLSSEG_FLOAT(&x[ix], stride_x, vl);

                va0 = VGET_VX2(vax2, 0);
                va1 = VGET_VX2(vax2, 1);
                vx0 = VGET_VX2(vxx2, 0);
                vx1 = VGET_VX2(vxx2, 1);
    
#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
                vr = VFMACCVV_FLOAT_TU(vr, va0, vx0, vl);
                vr = VFNMSACVV_FLOAT_TU(vr, va1, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va0, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va1, vx0, vl);
#else
                vr = VFMACCVV_FLOAT_TU(vr, va0, vx0, vl);
                vr = VFMACCVV_FLOAT_TU(vr, va1, vx1, vl);
                vi = VFMACCVV_FLOAT_TU(vi, va0, vx1, vl);
                vi = VFNMSACVV_FLOAT_TU(vi, va1, vx0, vl);
#endif
                j += vl * 2;
                ix += vl * inc_x * 2;
            }
            
            v_res = VFREDSUM_FLOAT_TU(v_res, vr, v_z0, vlmax);
            temp_r = VFMVFS_FLOAT_M1(v_res);
            v_res = VFREDSUM_FLOAT_TU(v_res, vi, v_z0, vlmax);
            temp_i = VFMVFS_FLOAT_M1(v_res);
    
#if !defined(XCONJ)
            y[iy]   += alpha_r * temp_r - alpha_i * temp_i;
            y[iy+1] += alpha_r * temp_i + alpha_i * temp_r;
#else
            y[iy]   += alpha_r * temp_r + alpha_i * temp_i;
            y[iy+1] -= alpha_r * temp_i - alpha_i * temp_r;
#endif
            iy += inc_y2;
            a_ptr += lda2;
        }

    }


    return(0);
}