OpenBLAS/kernel/zarch/dcopy.c

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 *****************************************************************************/

#include "common.h"


#if defined(Z13mvc)

static void  dcopy_kernel_32(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],5  \n\t"
            ".align 16 \n\t"
            "1: \n\t"
            "mvc   0(256,%[ptr_y]),0(%[ptr_x]) \n\t"
            "la    %[ptr_x],256(%[ptr_x])       \n\t"
            "la    %[ptr_y],256(%[ptr_y])       \n\t"
            "brctg %[n_tmp],1b"
            : [mem_y] "=m" (*(double (*)[n])y), [n_tmp] "+&r"(n)
            : [mem_x] "m" (*(const double (*)[n])x),
              [ptr_x] "a"(x), [ptr_y] "a"(y)
            : "cc" 
            );
    return;

}
#else

static void  dcopy_kernel_32(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],5      \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    %%v24, 64(%%r1,%[ptr_x])  \n\t"
            "vst   %%v24, 64(%%r1,%[ptr_y])  \n\t"
            "vl    %%v25, 80(%%r1,%[ptr_x])  \n\t"
            "vst   %%v25, 80(%%r1,%[ptr_y])  \n\t"
            "vl    %%v26, 96(%%r1,%[ptr_x])  \n\t"
            "vst   %%v26, 96(%%r1,%[ptr_y])  \n\t"
            "vl    %%v27, 112(%%r1,%[ptr_x]) \n\t"
            "vst   %%v27, 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    %%v24, 192(%%r1,%[ptr_x]) \n\t"
            "vst   %%v24, 192(%%r1,%[ptr_y]) \n\t"
            "vl    %%v25, 208(%%r1,%[ptr_x]) \n\t"
            "vst   %%v25, 208(%%r1,%[ptr_y]) \n\t"
            "vl    %%v26, 224(%%r1,%[ptr_x]) \n\t"
            "vst   %%v26, 224(%%r1,%[ptr_y]) \n\t"
            "vl    %%v27, 240(%%r1,%[ptr_x]) \n\t"
            "vst   %%v27, 240(%%r1,%[ptr_y]) \n\t"
            "la    %%r1,256(%%r1)      \n\t"
            "brctg %[n_tmp],1b"
            : [mem_y] "=m" (*(double (*)[n])y), [n_tmp] "+&r"(n)
            : [mem_x] "m" (*(const double (*)[n])x), [ptr_x] "a"(x), [ptr_y] "a"(y)
            : "cc",  "r1", "v24","v25","v26","v27"
            );
    return;

}
#endif

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 & -32;
        if (n1 > 0) {
            dcopy_kernel_32(n1, x, y);
            i = n1;
        }

        while (i < n) {
            y[i] = x[i];
            i++;

        }


    } else {

        BLASLONG n1 = n & -4;

        while (i < n1) {

            y[iy] = x[ix];
            y[iy + inc_y] = x[ix + inc_x];
            y[iy + 2 * inc_y] = x[ix + 2 * inc_x];
            y[iy + 3 * inc_y] = x[ix + 3 * inc_x];

            ix += inc_x * 4;
            iy += inc_y * 4;
            i += 4;

        }

        while (i < n) {

            y[iy] = x[ix];
            ix += inc_x;
            iy += inc_y;
            i++;

        }

    }
    return 0;


}