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45fdf951b64aa9145996727ecda901f00a2eda3c
OpenBLAS/kernel/zarch/zrot.c
Marius Hillenbrand 87e5bbd887 s390x: avoid variable-length arrays in struct for asm operands 
... since it is not required and clang does not support that gcc
extension. Instead, use a variable-length array directly for these
operands.

Note that, while the actual inline assembly code does not directly use
these memory operands, they serve to inform the compiler that it cannot
reorder reads or writes to/from the input and output data across the
inline asm statements.

Signed-off-by: Marius Hillenbrand <mhillen@linux.ibm.com>
2020-09-02 13:49:31 +02:00

237 lines
8.4 KiB
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/***************************************************************************
Copyright (c) 2013-2019, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#include "common.h"
static void zrot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *c, FLOAT *s) {
__asm__("vlrepg %%v0,%[c]\n\t"
"vlrepg %%v1,%[s]\n\t"
"srlg %[n],%[n],4\n\t"
"xgr %%r1,%%r1\n\t"
"0:\n\t"
"pfd 2, 1024(%%r1,%[x])\n\t"
"pfd 2, 1024(%%r1,%[y])\n\t"
"vl %%v24, 0(%%r1,%[x])\n\t"
"vl %%v25, 16(%%r1,%[x])\n\t"
"vl %%v26, 32(%%r1,%[x])\n\t"
"vl %%v27, 48(%%r1,%[x])\n\t"
"vl %%v16, 0(%%r1,%[y])\n\t"
"vl %%v17, 16(%%r1,%[y])\n\t"
"vl %%v18, 32(%%r1,%[y])\n\t"
"vl %%v19, 48(%%r1,%[y])\n\t"
"vfmdb %%v28,%%v24,%%v0\n\t"
"vfmdb %%v29,%%v25,%%v0\n\t"
"vfmdb %%v20,%%v24,%%v1\n\t" /* yn=x*s */
"vfmdb %%v21,%%v25,%%v1\n\t" /* yn=x*s */
"vfmdb %%v30,%%v26,%%v0\n\t"
"vfmdb %%v22,%%v26,%%v1\n\t" /* yn=x*s */
"vfmdb %%v31,%%v27,%%v0\n\t"
"vfmdb %%v23,%%v27,%%v1\n\t" /* yn=x*s */
/* 2nd parts */
"vfmadb %%v28,%%v16,%%v1,%%v28\n\t"
"vfmsdb %%v20,%%v16,%%v0,%%v20\n\t" /* yn=y*c-yn */
"vfmadb %%v29,%%v17,%%v1,%%v29\n\t"
"vfmsdb %%v21,%%v17,%%v0,%%v21\n\t" /* yn=y*c-yn */
"vfmadb %%v30,%%v18,%%v1,%%v30\n\t"
"vfmsdb %%v22,%%v18,%%v0,%%v22\n\t" /* yn=y*c-yn */
"vfmadb %%v31,%%v19,%%v1,%%v31\n\t"
"vfmsdb %%v23,%%v19,%%v0,%%v23\n\t" /* yn=y*c-yn */
"vst %%v28, 0(%%r1,%[x])\n\t"
"vst %%v29, 16(%%r1,%[x])\n\t"
"vst %%v30, 32(%%r1,%[x])\n\t"
"vst %%v31, 48(%%r1,%[x])\n\t"
"vst %%v20, 0(%%r1,%[y])\n\t"
"vst %%v21, 16(%%r1,%[y])\n\t"
"vst %%v22, 32(%%r1,%[y])\n\t"
"vst %%v23, 48(%%r1,%[y])\n\t"
"vl %%v24, 64(%%r1,%[x])\n\t"
"vl %%v25, 80(%%r1,%[x])\n\t"
"vl %%v26, 96(%%r1,%[x])\n\t"
"vl %%v27, 112(%%r1,%[x])\n\t"
"vl %%v16, 64(%%r1,%[y])\n\t"
"vl %%v17, 80(%%r1,%[y])\n\t"
"vl %%v18, 96(%%r1,%[y])\n\t"
"vl %%v19, 112(%%r1,%[y])\n\t"
"vfmdb %%v28,%%v24,%%v0\n\t"
"vfmdb %%v29,%%v25,%%v0\n\t"
"vfmdb %%v20,%%v24,%%v1\n\t" /* yn=x*s */
"vfmdb %%v21,%%v25,%%v1\n\t" /* yn=x*s */
"vfmdb %%v30,%%v26,%%v0\n\t"
"vfmdb %%v22,%%v26,%%v1\n\t" /* yn=x*s */
"vfmdb %%v31,%%v27,%%v0\n\t"
"vfmdb %%v23,%%v27,%%v1\n\t" /* yn=x*s */
/* 2nd parts */
"vfmadb %%v28,%%v16,%%v1,%%v28\n\t"
"vfmsdb %%v20,%%v16,%%v0,%%v20\n\t" /* yn=y*c-yn */
"vfmadb %%v29,%%v17,%%v1,%%v29\n\t"
"vfmsdb %%v21,%%v17,%%v0,%%v21\n\t" /* yn=y*c-yn */
"vfmadb %%v30,%%v18,%%v1,%%v30\n\t"
"vfmsdb %%v22,%%v18,%%v0,%%v22\n\t" /* yn=y*c-yn */
"vfmadb %%v31,%%v19,%%v1,%%v31\n\t"
"vfmsdb %%v23,%%v19,%%v0,%%v23\n\t" /* yn=y*c-yn */
"vst %%v28, 64(%%r1,%[x])\n\t"
"vst %%v29, 80(%%r1,%[x])\n\t"
"vst %%v30, 96(%%r1,%[x])\n\t"
"vst %%v31, 112(%%r1,%[x])\n\t"
"vst %%v20, 64(%%r1,%[y])\n\t"
"vst %%v21, 80(%%r1,%[y])\n\t"
"vst %%v22, 96(%%r1,%[y])\n\t"
"vst %%v23, 112(%%r1,%[y])\n\t"
"vl %%v24, 128(%%r1,%[x])\n\t"
"vl %%v25, 144(%%r1,%[x])\n\t"
"vl %%v26, 160(%%r1,%[x])\n\t"
"vl %%v27, 176(%%r1,%[x])\n\t"
"vl %%v16, 128(%%r1,%[y])\n\t"
"vl %%v17, 144(%%r1,%[y])\n\t"
"vl %%v18, 160(%%r1,%[y])\n\t"
"vl %%v19, 176(%%r1,%[y])\n\t"
"vfmdb %%v28,%%v24,%%v0\n\t"
"vfmdb %%v29,%%v25,%%v0\n\t"
"vfmdb %%v20,%%v24,%%v1\n\t" /* yn=x*s */
"vfmdb %%v21,%%v25,%%v1\n\t" /* yn=x*s */
"vfmdb %%v30,%%v26,%%v0\n\t"
"vfmdb %%v22,%%v26,%%v1\n\t" /* yn=x*s */
"vfmdb %%v31,%%v27,%%v0\n\t"
"vfmdb %%v23,%%v27,%%v1\n\t" /* yn=x*s */
/* 2nd parts */
"vfmadb %%v28,%%v16,%%v1,%%v28\n\t"
"vfmsdb %%v20,%%v16,%%v0,%%v20\n\t" /* yn=y*c-yn */
"vfmadb %%v29,%%v17,%%v1,%%v29\n\t"
"vfmsdb %%v21,%%v17,%%v0,%%v21\n\t" /* yn=y*c-yn */
"vfmadb %%v30,%%v18,%%v1,%%v30\n\t"
"vfmsdb %%v22,%%v18,%%v0,%%v22\n\t" /* yn=y*c-yn */
"vfmadb %%v31,%%v19,%%v1,%%v31\n\t"
"vfmsdb %%v23,%%v19,%%v0,%%v23\n\t" /* yn=y*c-yn */
"vst %%v28, 128(%%r1,%[x])\n\t"
"vst %%v29, 144(%%r1,%[x])\n\t"
"vst %%v30, 160(%%r1,%[x])\n\t"
"vst %%v31, 176(%%r1,%[x])\n\t"
"vst %%v20, 128(%%r1,%[y])\n\t"
"vst %%v21, 144(%%r1,%[y])\n\t"
"vst %%v22, 160(%%r1,%[y])\n\t"
"vst %%v23, 176(%%r1,%[y])\n\t"
"vl %%v24, 192(%%r1,%[x])\n\t"
"vl %%v25, 208(%%r1,%[x])\n\t"
"vl %%v26, 224(%%r1,%[x])\n\t"
"vl %%v27, 240(%%r1,%[x])\n\t"
"vl %%v16, 192(%%r1,%[y])\n\t"
"vl %%v17, 208(%%r1,%[y])\n\t"
"vl %%v18, 224(%%r1,%[y])\n\t"
"vl %%v19, 240(%%r1,%[y])\n\t"
"vfmdb %%v28,%%v24,%%v0\n\t"
"vfmdb %%v29,%%v25,%%v0\n\t"
"vfmdb %%v20,%%v24,%%v1\n\t" /* yn=x*s */
"vfmdb %%v21,%%v25,%%v1\n\t" /* yn=x*s */
"vfmdb %%v30,%%v26,%%v0\n\t"
"vfmdb %%v22,%%v26,%%v1\n\t" /* yn=x*s */
"vfmdb %%v31,%%v27,%%v0\n\t"
"vfmdb %%v23,%%v27,%%v1\n\t" /* yn=x*s */
/* 2nd parts */
"vfmadb %%v28,%%v16,%%v1,%%v28\n\t"
"vfmsdb %%v20,%%v16,%%v0,%%v20\n\t" /* yn=y*c-yn */
"vfmadb %%v29,%%v17,%%v1,%%v29\n\t"
"vfmsdb %%v21,%%v17,%%v0,%%v21\n\t" /* yn=y*c-yn */
"vfmadb %%v30,%%v18,%%v1,%%v30\n\t"
"vfmsdb %%v22,%%v18,%%v0,%%v22\n\t" /* yn=y*c-yn */
"vfmadb %%v31,%%v19,%%v1,%%v31\n\t"
"vfmsdb %%v23,%%v19,%%v0,%%v23\n\t" /* yn=y*c-yn */
"vst %%v28, 192(%%r1,%[x])\n\t"
"vst %%v29, 208(%%r1,%[x])\n\t"
"vst %%v30, 224(%%r1,%[x])\n\t"
"vst %%v31, 240(%%r1,%[x])\n\t"
"vst %%v20, 192(%%r1,%[y])\n\t"
"vst %%v21, 208(%%r1,%[y])\n\t"
"vst %%v22, 224(%%r1,%[y])\n\t"
"vst %%v23, 240(%%r1,%[y])\n\t"
"agfi %%r1,256\n\t"
"brctg %[n],0b"
: "+m"(*(FLOAT (*)[n * 2]) x),
"+m"(*(FLOAT (*)[n * 2]) y),[n] "+&r"(n)
: [x] "a"(x),[y] "a"(y),[c] "Q"(*c),[s] "Q"(*s)
: "cc", "r1", "v0", "v1", "v16", "v17", "v18", "v19", "v20", "v21",
"v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30",
"v31");
}
int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y,
FLOAT c, FLOAT s) {
BLASLONG i = 0;
BLASLONG ix = 0, iy = 0;
FLOAT temp[2];
BLASLONG inc_x2;
BLASLONG inc_y2;
if (n <= 0)
return (0);
if ((inc_x == 1) && (inc_y == 1)) {
BLASLONG n1 = n & -16;
if (n1 > 0) {
FLOAT cosa, sina;
cosa = c;
sina = s;
zrot_kernel_16(n1, x, y, &cosa, &sina);
i = n1;
ix = 2 * n1;
}
while (i < n) {
temp[0] = c * x[ix] + s * y[ix];
temp[1] = c * x[ix + 1] + s * y[ix + 1];
y[ix] = c * y[ix] - s * x[ix];
y[ix + 1] = c * y[ix + 1] - s * x[ix + 1];
x[ix] = temp[0];
x[ix + 1] = temp[1];
ix += 2;
i++;
}
} else {
inc_x2 = 2 * inc_x;
inc_y2 = 2 * inc_y;
while (i < n) {
temp[0] = c * x[ix] + s * y[iy];
temp[1] = c * x[ix + 1] + s * y[iy + 1];
y[iy] = c * y[iy] - s * x[ix];
y[iy + 1] = c * y[iy + 1] - s * x[ix + 1];
x[ix] = temp[0];
x[ix + 1] = temp[1];
ix += inc_x2;
iy += inc_y2;
i++;
}
}
return (0);
}
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