OpenBLAS/kernel/riscv64/symv_U_vector.c

/***************************************************************************
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#include "common.h"
#if !defined(DOUBLE)
#define VSETVL(n) vsetvl_e32m4(n)
#define VSETVL_MAX vsetvlmax_e32m1()
#define FLOAT_V_T vfloat32m4_t
#define FLOAT_V_T_M1 vfloat32m1_t
#define VLEV_FLOAT vle_v_f32m4
#define VLSEV_FLOAT vlse_v_f32m4
#define VSEV_FLOAT vse_v_f32m4
#define VSSEV_FLOAT vsse_v_f32m4
#define VFREDSUM_FLOAT vfredsum_vs_f32m4_f32m1
#define VFMACCVV_FLOAT vfmacc_vv_f32m4
#define VFMACCVF_FLOAT vfmacc_vf_f32m4
#define VFMVVF_FLOAT vfmv_v_f_f32m4
#define VFMVVF_FLOAT_M1 vfmv_v_f_f32m1
#define VFDOTVV_FLOAT vfdot_vv_f32m4
#define VFMULVV_FLOAT vfmul_vv_f32m4
#else
#define VSETVL(n) vsetvl_e64m4(n)
#define VSETVL_MAX vsetvlmax_e64m1()
#define FLOAT_V_T vfloat64m4_t
#define FLOAT_V_T_M1 vfloat64m1_t
#define VLEV_FLOAT vle_v_f64m4
#define VLSEV_FLOAT vlse_v_f64m4
#define VSEV_FLOAT vse_v_f64m4
#define VSSEV_FLOAT vsse_v_f64m4
#define VFREDSUM_FLOAT vfredsum_vs_f64m4_f64m1
#define VFMACCVV_FLOAT vfmacc_vv_f64m4
#define VFMACCVF_FLOAT vfmacc_vf_f64m4
#define VFMVVF_FLOAT vfmv_v_f_f64m4
#define VFMVVF_FLOAT_M1 vfmv_v_f_f64m1
#define VFDOTVV_FLOAT vfdot_vv_f64m4
#define VFMULVV_FLOAT vfmul_vv_f64m4
#endif

int CNAME(BLASLONG m, BLASLONG offset, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
{
        BLASLONG i, j, k;
        BLASLONG ix,iy;
        BLASLONG jx,jy;
        FLOAT temp1;
        FLOAT temp2;
        FLOAT *a_ptr = a;
        unsigned int gvl = 0;
        FLOAT_V_T_M1 v_res, v_z0;
        gvl = VSETVL_MAX;
        v_res = VFMVVF_FLOAT_M1(0, gvl);
        v_z0 = VFMVVF_FLOAT_M1(0, gvl);

        FLOAT_V_T va, vx, vy, vr;
        BLASLONG stride_x, stride_y, inc_xv, inc_yv;

        BLASLONG m1 = m - offset;
        if(inc_x == 1 && inc_y == 1){
                a_ptr += m1 * lda;
                for (j=m1; j<m; j++)
                {
                        temp1 = alpha * x[j];
                        temp2 = 0.0;
                        if(j > 0){
                                i = 0;
                                gvl = VSETVL(j);
                                vr = VFMVVF_FLOAT(0, gvl);
                                for(k = 0; k < j / gvl; k++){
                                        vy = VLEV_FLOAT(&y[i], gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSEV_FLOAT(&y[i], vy, gvl);

                                        vx = VLEV_FLOAT(&x[i], gvl);
                                        vr = VFMACCVV_FLOAT(vr, vx, va, gvl);

                                        i += gvl;
                                }
                                v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                temp2 = v_res[0];
                                if(i < j){
                                        gvl = VSETVL(j-i);
                                        vy = VLEV_FLOAT(&y[i], gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSEV_FLOAT(&y[i], vy, gvl);

                                        vx = VLEV_FLOAT(&x[i], gvl);
                                        vr = VFMULVV_FLOAT(vx, va, gvl);
                                        v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                        temp2 += v_res[0];
                                }
                        }
                        y[j] += temp1 * a_ptr[j] + alpha * temp2;
                        a_ptr += lda;
                }
        }else if(inc_x == 1){
                jy = m1 * inc_y;
                a_ptr += m1 * lda;
                stride_y = inc_y * sizeof(FLOAT);
                for (j=m1; j<m; j++)
                {
                        temp1 = alpha * x[j];
                        temp2 = 0.0;
                        if(j > 0){
                                iy = 0;
                                i = 0;
                                gvl = VSETVL(j);
                                inc_yv = inc_y * gvl;
                                vr = VFMVVF_FLOAT(0, gvl);
                                for(k = 0; k < j / gvl; k++){
                                        vy = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSSEV_FLOAT(&y[iy], stride_y, vy, gvl);

                                        vx = VLEV_FLOAT(&x[i], gvl);
                                        vr = VFMACCVV_FLOAT(vr, vx, va, gvl);

                                        i += gvl;
                                        iy += inc_yv;
                                }
                                v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                temp2 = v_res[0];
                                if(i < j){
                                        gvl = VSETVL(j-i);
                                        vy = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSSEV_FLOAT(&y[iy], stride_y, vy, gvl);

                                        vx = VLEV_FLOAT(&x[i], gvl);
                                        vr = VFMULVV_FLOAT(vx, va, gvl);
                                        v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                        temp2 += v_res[0];
                                }
                        }
                        y[jy] += temp1 * a_ptr[j] + alpha * temp2;
                        a_ptr += lda;
                        jy    += inc_y;
                }
        }else if(inc_y == 1){
                jx = m1 * inc_x;
                a_ptr += m1 * lda;
                stride_x = inc_x * sizeof(FLOAT);
                for (j=m1; j<m; j++)
                {
                        temp1 = alpha * x[jx];
                        temp2 = 0.0;
                        if(j > 0){
                                ix = 0;
                                i = 0;
                                gvl = VSETVL(j);
                                inc_xv = inc_x * gvl;
                                vr = VFMVVF_FLOAT(0, gvl);
                                for(k = 0; k < j / gvl; k++){
                                        vy = VLEV_FLOAT(&y[i], gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSEV_FLOAT(&y[i], vy, gvl);

                                        vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                        vr = VFMACCVV_FLOAT(vr, vx, va, gvl);

                                        i += gvl;
                                        ix += inc_xv;
                                }
                                v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                temp2 = v_res[0];
                                if(i < j){
                                        gvl = VSETVL(j-i);
                                        vy = VLEV_FLOAT(&y[i], gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSEV_FLOAT(&y[i], vy, gvl);

                                        vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                        vr = VFMULVV_FLOAT(vx, va, gvl);
                                        v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                        temp2 += v_res[0];
                                }
                        }
                        y[j] += temp1 * a_ptr[j] + alpha * temp2;
                        a_ptr += lda;
                        jx    += inc_x;
                }
        }else{
                jx = m1 * inc_x;
                jy = m1 * inc_y;
                a_ptr += m1 * lda;
                stride_x = inc_x * sizeof(FLOAT);
                stride_y = inc_y * sizeof(FLOAT);
                for (j=m1; j<m; j++)
                {
                        temp1 = alpha * x[jx];
                        temp2 = 0.0;
                        if(j > 0){
                                ix = 0;
                                iy = 0;
                                i = 0;
                                gvl = VSETVL(j);
                                inc_xv = inc_x * gvl;
                                inc_yv = inc_y * gvl;
                                vr = VFMVVF_FLOAT(0, gvl);
                                for(k = 0; k < j / gvl; k++){
                                        vy = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSSEV_FLOAT(&y[iy], stride_y, vy, gvl);

                                        vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                        vr = VFMACCVV_FLOAT(vr, vx, va, gvl);

                                        i += gvl;
                                        ix += inc_xv;
                                        iy += inc_yv;
                                }
                                v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                temp2 = v_res[0];
                                if(i < j){
                                        gvl = VSETVL(j-i);
                                        vy = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                        va = VLEV_FLOAT(&a_ptr[i], gvl);
                                        vy = VFMACCVF_FLOAT(vy, temp1, va, gvl);
                                        VSSEV_FLOAT(&y[iy], stride_y, vy, gvl);

                                        vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                        vr = VFMULVV_FLOAT(vx, va, gvl);
                                        v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
                                        temp2 += v_res[0];
                                }
                        }
                        y[jy] += temp1 * a_ptr[j] + alpha * temp2;
                        a_ptr += lda;
                        jx    += inc_x;
                        jy    += inc_y;
                }
        }
        return(0);
}