OpenBLAS/kernel/riscv64/gemv_t_vector.c

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#include "common.h"
#if !defined(DOUBLE)
#define RVV_EFLOAT RVV_E32
#define RVV_M RVV_M4
#define FLOAT_V_T float32xm4_t
#define VLEV_FLOAT vlev_float32xm4
#define VLSEV_FLOAT vlsev_float32xm4
#define VFREDSUM_FLOAT vfredsumvs_float32xm4
#define VFMACCVV_FLOAT vfmaccvv_float32xm4
#define VFMVVF_FLOAT vfmvvf_float32xm4
#define VFDOTVV_FLOAT vfdotvv_float32xm4
#define VFMULVV_FLOAT vfmulvv_float32xm4
#else
#define RVV_EFLOAT RVV_E64
#define RVV_M RVV_M4
#define FLOAT_V_T float64xm4_t
#define VLEV_FLOAT vlev_float64xm4
#define VLSEV_FLOAT vlsev_float64xm4
#define VFREDSUM_FLOAT vfredsumvs_float64xm4
#define VFMACCVV_FLOAT vfmaccvv_float64xm4
#define VFMVVF_FLOAT vfmvvf_float64xm4
#define VFDOTVV_FLOAT vfdotvv_float64xm4
#define VFMULVV_FLOAT vfmulvv_float64xm4
#endif

int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
{
	BLASLONG i = 0, j = 0, k = 0;
	BLASLONG ix = 0, iy = 0;
	FLOAT *a_ptr = a;
        FLOAT temp;

        FLOAT_V_T va, vr, vx;
        unsigned int gvl = 0;
        if(inc_x == 1){
                for(i = 0; i < n; i++){
                        gvl = vsetvli(m, RVV_EFLOAT, RVV_M);
                        j = 0;
                        vr = VFMVVF_FLOAT(0, gvl);
                        for(k = 0; k < m/gvl; k++){
                                va = VLEV_FLOAT(&a_ptr[j], gvl);
                                vx = VLEV_FLOAT(&x[j], gvl);
                                vr = VFMACCVV_FLOAT(vr, va, vx, gvl);
                                j += gvl;
                        }
                        va = VFMVVF_FLOAT(0, gvl);
                        va = VFREDSUM_FLOAT(vr, va, gvl);
                        temp = va[0];
                        if(j < m){
                                gvl = vsetvli(m-j, RVV_EFLOAT, RVV_M);
                                va = VLEV_FLOAT(&a_ptr[j], gvl);
                                vx = VLEV_FLOAT(&x[j], gvl);
                                vr = VFMULVV_FLOAT(va, vx, gvl);

                                va = VFMVVF_FLOAT(0, gvl);
                                va = VFREDSUM_FLOAT(vr, va, gvl);
                                temp += va[0];
                        }
                        y[iy] += alpha * temp;
                        iy += inc_y;
                        a_ptr += lda;
                }
        }else{
                gvl = vsetvli(m, RVV_EFLOAT, RVV_M);
                BLASLONG stride_x = inc_x * sizeof(FLOAT);
                BLASLONG inc_xv = inc_x * gvl;
                for(i = 0; i < n; i++){
                        gvl = vsetvli(m, RVV_EFLOAT, RVV_M);
                        j = 0;
                        ix = 0;
                        vr = VFMVVF_FLOAT(0, gvl);
                        for(k = 0; k < m/gvl; k++){
                                va = VLEV_FLOAT(&a_ptr[j], gvl);
                                vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                vr = VFMACCVV_FLOAT(vr, va, vx, gvl);
                                j += gvl;
                                ix += inc_xv;
                        }
                        va = VFMVVF_FLOAT(0, gvl);
                        va = VFREDSUM_FLOAT(vr, va, gvl);
                        temp = va[0];
                        if(j < m){
                                gvl = vsetvli(m-j, RVV_EFLOAT, RVV_M);
                                va = VLEV_FLOAT(&a_ptr[j], gvl);
                                vx = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                vr = VFMULVV_FLOAT(va, vx, gvl);

                                va = VFMVVF_FLOAT(0, gvl);
                                va = VFREDSUM_FLOAT(vr, va, gvl);
                                temp += va[0];
                        }
                        y[iy] += alpha * temp;
                        iy += inc_y;
                        a_ptr += lda;
                }
        }
	return(0);
}