OpenBLAS/kernel/zarch/zcopy.c

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#include "common.h"
 
static void  zcopy_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y) {

    __asm__ volatile(
            "pfd   1, 0(%[ptr_x]) \n\t"
            "pfd   2, 0(%[ptr_y]) \n\t"
            "srlg  %[n_tmp],%[n_tmp],4      \n\t"
            "xgr   %%r1,%%r1       \n\t"
            ".align 16 \n\t"
            "1:    \n\t"
            "pfd   1, 256(%%r1,%[ptr_x]) \n\t"
            "pfd   2, 256(%%r1,%[ptr_y]) \n\t"

            "vl    %%v24, 0(%%r1,%[ptr_x])   \n\t"
            "vst   %%v24, 0(%%r1,%[ptr_y])   \n\t"
            "vl    %%v25, 16(%%r1,%[ptr_x])  \n\t"
            "vst   %%v25, 16(%%r1,%[ptr_y])  \n\t"
            "vl    %%v26, 32(%%r1,%[ptr_x])  \n\t"
            "vst   %%v26, 32(%%r1,%[ptr_y])  \n\t"
            "vl    %%v27, 48(%%r1,%[ptr_x])  \n\t"
            "vst   %%v27, 48(%%r1,%[ptr_y])  \n\t"

            "vl    %%v28, 64(%%r1,%[ptr_x])  \n\t"
            "vst   %%v28, 64(%%r1,%[ptr_y])  \n\t"
            "vl    %%v29, 80(%%r1,%[ptr_x])  \n\t"
            "vst   %%v29, 80(%%r1,%[ptr_y])  \n\t"
            "vl    %%v30, 96(%%r1,%[ptr_x])  \n\t"
            "vst   %%v30, 96(%%r1,%[ptr_y])  \n\t"
            "vl    %%v31, 112(%%r1,%[ptr_x]) \n\t"
            "vst   %%v31, 112(%%r1,%[ptr_y]) \n\t"


            "vl    %%v24, 128(%%r1,%[ptr_x]) \n\t"
            "vst   %%v24, 128(%%r1,%[ptr_y]) \n\t"

            "vl    %%v25, 144(%%r1,%[ptr_x]) \n\t"
            "vst   %%v25, 144(%%r1,%[ptr_y]) \n\t"

            "vl    %%v26, 160(%%r1,%[ptr_x]) \n\t"
            "vst   %%v26, 160(%%r1,%[ptr_y]) \n\t"

            "vl    %%v27, 176(%%r1,%[ptr_x]) \n\t"
            "vst   %%v27, 176(%%r1,%[ptr_y]) \n\t"

            "vl    %%v28, 192(%%r1,%[ptr_x]) \n\t"
            "vst   %%v28, 192(%%r1,%[ptr_y]) \n\t"
            "vl    %%v29, 208(%%r1,%[ptr_x]) \n\t"
            "vst   %%v29, 208(%%r1,%[ptr_y]) \n\t"
            "vl    %%v30, 224(%%r1,%[ptr_x]) \n\t"
            "vst   %%v30, 224(%%r1,%[ptr_y]) \n\t"
            "vl    %%v31, 240(%%r1,%[ptr_x]) \n\t"
            "vst   %%v31, 240(%%r1,%[ptr_y]) \n\t"
            "la    %%r1,256(%%r1)      \n\t"
            "brctg %[n_tmp],1b"
            : [mem_y] "=m" (*(double (*)[2*n])y), [n_tmp] "+&r"(n)
            : [mem_x] "m" (*(const double (*)[2*n])x), [ptr_x] "a"(x), [ptr_y] "a"(y)
            : "cc",  "r1", "v24","v25","v26","v27","v28","v29","v30","v31" 
            );
    return; 

}


int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
{
    BLASLONG i=0;
    BLASLONG ix=0,iy=0;

    if ( n <= 0     )  return(0);

    if ( (inc_x == 1) && (inc_y == 1 ))
    {

        BLASLONG n1 = n & -16;
        if ( n1 > 0 )
        {
            zcopy_kernel_16(n1, x, y);
            i=n1;
            ix=n1*2;
            iy=n1*2;
        }

        while(i < n)
        {
            y[iy] = x[iy] ;
            y[iy+1] = x[ix+1] ;
            ix+=2;
            iy+=2;
            i++ ;

        }


    }
    else
    {

        BLASLONG inc_x2 = 2 * inc_x;
        BLASLONG inc_y2 = 2 * inc_y;

        while(i < n)
        {
            y[iy] = x[ix] ;
            y[iy+1] = x[ix+1] ;
            ix += inc_x2 ;
            iy += inc_y2 ;
            i++ ;

        }

    }
    return(0);
    

}