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qemu/tests/tcg/hexagon/scatter_gather.c
Taylor Simpson c367938540 Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather 
Replace __builtin_* with inline assembly
    The __builtin's are subject to change with different compiler
    releases, so might break
Mark arrays as aligned when accessed as HVX vectors
Clean up comments

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-10-tsimpson@quicinc.com>
2023-03-06 20:47:12 -08:00

1041 lines
32 KiB
C
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/*
* Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* This example tests the HVX scatter/gather instructions
*
* See section 5.13 of the V68 HVX Programmer's Reference
*
* There are 3 main classes operations
* _16 16-bit elements and 16-bit offsets
* _32 32-bit elements and 32-bit offsets
* _16_32 16-bit elements and 32-bit offsets
*
* There are also masked and accumulate versions
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
typedef long HVX_Vector __attribute__((__vector_size__(128)))
__attribute__((aligned(128)));
typedef long HVX_VectorPair __attribute__((__vector_size__(256)))
__attribute__((aligned(128)));
typedef long HVX_VectorPred __attribute__((__vector_size__(128)))
__attribute__((aligned(128)));
int err;
/* define the number of rows/cols in a square matrix */
#define MATRIX_SIZE 64
/* define the size of the scatter buffer */
#define SCATTER_BUFFER_SIZE (MATRIX_SIZE * MATRIX_SIZE)
/* fake vtcm - put buffers together and force alignment */
static struct {
unsigned short vscatter16[SCATTER_BUFFER_SIZE];
unsigned short vgather16[MATRIX_SIZE];
unsigned int vscatter32[SCATTER_BUFFER_SIZE];
unsigned int vgather32[MATRIX_SIZE];
unsigned short vscatter16_32[SCATTER_BUFFER_SIZE];
unsigned short vgather16_32[MATRIX_SIZE];
} vtcm __attribute__((aligned(0x10000)));
/* declare the arrays of reference values */
unsigned short vscatter16_ref[SCATTER_BUFFER_SIZE];
unsigned short vgather16_ref[MATRIX_SIZE];
unsigned int vscatter32_ref[SCATTER_BUFFER_SIZE];
unsigned int vgather32_ref[MATRIX_SIZE];
unsigned short vscatter16_32_ref[SCATTER_BUFFER_SIZE];
unsigned short vgather16_32_ref[MATRIX_SIZE];
/* declare the arrays of offsets */
unsigned short half_offsets[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned int word_offsets[MATRIX_SIZE] __attribute__((aligned(128)));
/* declare the arrays of values */
unsigned short half_values[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned short half_values_acc[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned short half_values_masked[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned int word_values[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned int word_values_acc[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned int word_values_masked[MATRIX_SIZE] __attribute__((aligned(128)));
/* declare the arrays of predicates */
unsigned short half_predicates[MATRIX_SIZE] __attribute__((aligned(128)));
unsigned int word_predicates[MATRIX_SIZE] __attribute__((aligned(128)));
/* make this big enough for all the operations */
const size_t region_len = sizeof(vtcm);
/* optionally add sync instructions */
#define SYNC_VECTOR 1
static void sync_scatter(void *addr)
{
#if SYNC_VECTOR
/*
* Do the scatter release followed by a dummy load to complete the
* synchronization. Normally the dummy load would be deferred as
* long as possible to minimize stalls.
*/
asm volatile("vmem(%0 + #0):scatter_release\n" : : "r"(addr));
/* use volatile to force the load */
volatile HVX_Vector vDummy = *(HVX_Vector *)addr; vDummy = vDummy;
#endif
}
static void sync_gather(void *addr)
{
#if SYNC_VECTOR
/* use volatile to force the load */
volatile HVX_Vector vDummy = *(HVX_Vector *)addr; vDummy = vDummy;
#endif
}
/* optionally print the results */
#define PRINT_DATA 0
#define FILL_CHAR '.'
/* fill vtcm scratch with ee */
void prefill_vtcm_scratch(void)
{
memset(&vtcm, FILL_CHAR, sizeof(vtcm));
}
/* create byte offsets to be a diagonal of the matrix with 16 bit elements */
void create_offsets_values_preds_16(void)
{
unsigned short half_element = 0;
unsigned short half_element_masked = 0;
char letter = 'A';
char letter_masked = '@';
for (int i = 0; i < MATRIX_SIZE; i++) {
half_offsets[i] = i * (2 * MATRIX_SIZE + 2);
half_element = 0;
half_element_masked = 0;
for (int j = 0; j < 2; j++) {
half_element |= letter << j * 8;
half_element_masked |= letter_masked << j * 8;
}
half_values[i] = half_element;
half_values_acc[i] = ((i % 10) << 8) + (i % 10);
half_values_masked[i] = half_element_masked;
letter++;
/* reset to 'A' */
if (letter == 'M') {
letter = 'A';
}
half_predicates[i] = (i % 3 == 0 || i % 5 == 0) ? ~0 : 0;
}
}
/* create byte offsets to be a diagonal of the matrix with 32 bit elements */
void create_offsets_values_preds_32(void)
{
unsigned int word_element = 0;
unsigned int word_element_masked = 0;
char letter = 'A';
char letter_masked = '&';
for (int i = 0; i < MATRIX_SIZE; i++) {
word_offsets[i] = i * (4 * MATRIX_SIZE + 4);
word_element = 0;
word_element_masked = 0;
for (int j = 0; j < 4; j++) {
word_element |= letter << j * 8;
word_element_masked |= letter_masked << j * 8;
}
word_values[i] = word_element;
word_values_acc[i] = ((i % 10) << 8) + (i % 10);
word_values_masked[i] = word_element_masked;
letter++;
/* reset to 'A' */
if (letter == 'M') {
letter = 'A';
}
word_predicates[i] = (i % 4 == 0 || i % 7 == 0) ? ~0 : 0;
}
}
/*
* create byte offsets to be a diagonal of the matrix with 16 bit elements
* and 32 bit offsets
*/
void create_offsets_values_preds_16_32(void)
{
unsigned short half_element = 0;
unsigned short half_element_masked = 0;
char letter = 'D';
char letter_masked = '$';
for (int i = 0; i < MATRIX_SIZE; i++) {
word_offsets[i] = i * (2 * MATRIX_SIZE + 2);
half_element = 0;
half_element_masked = 0;
for (int j = 0; j < 2; j++) {
half_element |= letter << j * 8;
half_element_masked |= letter_masked << j * 8;
}
half_values[i] = half_element;
half_values_acc[i] = ((i % 10) << 8) + (i % 10);
half_values_masked[i] = half_element_masked;
letter++;
/* reset to 'A' */
if (letter == 'P') {
letter = 'D';
}
half_predicates[i] = (i % 2 == 0 || i % 13 == 0) ? ~0 : 0;
}
}
/* scatter the 16 bit elements using HVX */
void vector_scatter_16(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.h).h = v1\n\t"
: : "r"(vtcm.vscatter16), "r"(region_len),
"r"(half_offsets), "r"(half_values)
: "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
/* scatter-accumulate the 16 bit elements using HVX */
void vector_scatter_16_acc(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.h).h += v1\n\t"
: : "r"(vtcm.vscatter16), "r"(region_len),
"r"(half_offsets), "r"(half_values_acc)
: "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
/* masked scatter the 16 bit elements using HVX */
void vector_scatter_16_masked(void)
{
asm ("r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v1 = vmem(%4 + #0)\n\t"
"if (q0) vscatter(%1, m0, v0.h).h = v1\n\t"
: : "r"(half_predicates), "r"(vtcm.vscatter16), "r"(region_len),
"r"(half_offsets), "r"(half_values_masked)
: "r1", "q0", "m0", "q0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
/* scatter the 32 bit elements using HVX */
void vector_scatter_32(void)
{
HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
HVX_Vector *valueslo = (HVX_Vector *)word_values;
HVX_Vector *valueshi = (HVX_Vector *)&word_values[MATRIX_SIZE / 2];
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.w).w = v1\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetslo), "r"(valueslo)
: "m0", "v0", "v1", "memory");
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.w).w = v1\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetshi), "r"(valueshi)
: "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter32);
}
/* scatter-accumulate the 32 bit elements using HVX */
void vector_scatter_32_acc(void)
{
HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
HVX_Vector *valueslo = (HVX_Vector *)word_values_acc;
HVX_Vector *valueshi = (HVX_Vector *)&word_values_acc[MATRIX_SIZE / 2];
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.w).w += v1\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetslo), "r"(valueslo)
: "m0", "v0", "v1", "memory");
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%3 + #0)\n\t"
"vscatter(%0, m0, v0.w).w += v1\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetshi), "r"(valueshi)
: "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter32);
}
/* masked scatter the 32 bit elements using HVX */
void vector_scatter_32_masked(void)
{
HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
HVX_Vector *valueslo = (HVX_Vector *)word_values_masked;
HVX_Vector *valueshi = (HVX_Vector *)&word_values_masked[MATRIX_SIZE / 2];
HVX_Vector *predslo = (HVX_Vector *)word_predicates;
HVX_Vector *predshi = (HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
asm ("r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v1 = vmem(%4 + #0)\n\t"
"if (q0) vscatter(%1, m0, v0.w).w = v1\n\t"
: : "r"(predslo), "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetslo), "r"(valueslo)
: "r1", "q0", "m0", "q0", "v0", "v1", "memory");
asm ("r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v1 = vmem(%4 + #0)\n\t"
"if (q0) vscatter(%1, m0, v0.w).w = v1\n\t"
: : "r"(predshi), "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetshi), "r"(valueshi)
: "r1", "q0", "m0", "q0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter32);
}
/* scatter the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%2 + #1)\n\t"
"v2 = vmem(%3 + #0)\n\t"
"v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
"vscatter(%0, m0, v1:0.w).h = v2\n\t"
: : "r"(vtcm.vscatter16_32), "r"(region_len),
"r"(word_offsets), "r"(half_values)
: "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
/* scatter-accumulate the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32_acc(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%2 + #1)\n\t"
"v2 = vmem(%3 + #0)\n\t" \
"v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
"vscatter(%0, m0, v1:0.w).h += v2\n\t"
: : "r"(vtcm.vscatter16_32), "r"(region_len),
"r"(word_offsets), "r"(half_values_acc)
: "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
/* masked scatter the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32_masked(void)
{
asm ("r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"v0.h = vshuff(v0.h)\n\t" /* shuffle the predicates */
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v1 = vmem(%3 + #1)\n\t"
"v2 = vmem(%4 + #0)\n\t" \
"v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
"if (q0) vscatter(%1, m0, v1:0.w).h = v2\n\t"
: : "r"(half_predicates), "r"(vtcm.vscatter16_32), "r"(region_len),
"r"(word_offsets), "r"(half_values_masked)
: "r1", "q0", "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
/* gather the elements from the scatter16 buffer using HVX */
void vector_gather_16(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"{ vtmp.h = vgather(%0, m0, v0.h).h\n\t"
" vmem(%3 + #0) = vtmp.new }\n\t"
: : "r"(vtcm.vscatter16), "r"(region_len),
"r"(half_offsets), "r"(vtcm.vgather16)
: "m0", "v0", "memory");
sync_gather(vtcm.vgather16);
}
static unsigned short gather_16_masked_init(void)
{
char letter = '?';
return letter | (letter << 8);
}
/* masked gather the elements from the scatter16 buffer using HVX */
void vector_gather_16_masked(void)
{
unsigned short init = gather_16_masked_init();
asm ("v0.h = vsplat(%5)\n\t"
"vmem(%4 + #0) = v0\n\t" /* initialize the write area */
"r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"{ if (q0) vtmp.h = vgather(%1, m0, v0.h).h\n\t"
" vmem(%4 + #0) = vtmp.new }\n\t"
: : "r"(half_predicates), "r"(vtcm.vscatter16), "r"(region_len),
"r"(half_offsets), "r"(vtcm.vgather16), "r"(init)
: "r1", "q0", "m0", "v0", "memory");
sync_gather(vtcm.vgather16);
}
/* gather the elements from the scatter32 buffer using HVX */
void vector_gather_32(void)
{
HVX_Vector *vgatherlo = (HVX_Vector *)vtcm.vgather32;
HVX_Vector *vgatherhi = (HVX_Vector *)&vtcm.vgather32[MATRIX_SIZE / 2];
HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"{ vtmp.w = vgather(%0, m0, v0.w).w\n\t"
" vmem(%3 + #0) = vtmp.new }\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetslo), "r"(vgatherlo)
: "m0", "v0", "memory");
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"{ vtmp.w = vgather(%0, m0, v0.w).w\n\t"
" vmem(%3 + #0) = vtmp.new }\n\t"
: : "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetshi), "r"(vgatherhi)
: "m0", "v0", "memory");
sync_gather(vgatherlo);
sync_gather(vgatherhi);
}
static unsigned int gather_32_masked_init(void)
{
char letter = '?';
return letter | (letter << 8) | (letter << 16) | (letter << 24);
}
/* masked gather the elements from the scatter32 buffer using HVX */
void vector_gather_32_masked(void)
{
unsigned int init = gather_32_masked_init();
HVX_Vector *vgatherlo = (HVX_Vector *)vtcm.vgather32;
HVX_Vector *vgatherhi = (HVX_Vector *)&vtcm.vgather32[MATRIX_SIZE / 2];
HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
HVX_Vector *predslo = (HVX_Vector *)word_predicates;
HVX_Vector *predshi = (HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
asm ("v0.h = vsplat(%5)\n\t"
"vmem(%4 + #0) = v0\n\t" /* initialize the write area */
"r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"{ if (q0) vtmp.w = vgather(%1, m0, v0.w).w\n\t"
" vmem(%4 + #0) = vtmp.new }\n\t"
: : "r"(predslo), "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetslo), "r"(vgatherlo), "r"(init)
: "r1", "q0", "m0", "v0", "memory");
asm ("v0.h = vsplat(%5)\n\t"
"vmem(%4 + #0) = v0\n\t" /* initialize the write area */
"r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"{ if (q0) vtmp.w = vgather(%1, m0, v0.w).w\n\t"
" vmem(%4 + #0) = vtmp.new }\n\t"
: : "r"(predshi), "r"(vtcm.vscatter32), "r"(region_len),
"r"(offsetshi), "r"(vgatherhi), "r"(init)
: "r1", "q0", "m0", "v0", "memory");
sync_gather(vgatherlo);
sync_gather(vgatherhi);
}
/* gather the elements from the scatter16_32 buffer using HVX */
void vector_gather_16_32(void)
{
asm ("m0 = %1\n\t"
"v0 = vmem(%2 + #0)\n\t"
"v1 = vmem(%2 + #1)\n\t"
"{ vtmp.h = vgather(%0, m0, v1:0.w).h\n\t"
" vmem(%3 + #0) = vtmp.new }\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v0.h = vdeal(v0.h)\n\t" /* deal the elements to get the order back */
"vmem(%3 + #0) = v0\n\t"
: : "r"(vtcm.vscatter16_32), "r"(region_len),
"r"(word_offsets), "r"(vtcm.vgather16_32)
: "m0", "v0", "v1", "memory");
sync_gather(vtcm.vgather16_32);
}
/* masked gather the elements from the scatter16_32 buffer using HVX */
void vector_gather_16_32_masked(void)
{
unsigned short init = gather_16_masked_init();
asm ("v0.h = vsplat(%5)\n\t"
"vmem(%4 + #0) = v0\n\t" /* initialize the write area */
"r1 = #-1\n\t"
"v0 = vmem(%0 + #0)\n\t"
"v0.h = vshuff(v0.h)\n\t" /* shuffle the predicates */
"q0 = vand(v0, r1)\n\t"
"m0 = %2\n\t"
"v0 = vmem(%3 + #0)\n\t"
"v1 = vmem(%3 + #1)\n\t"
"{ if (q0) vtmp.h = vgather(%1, m0, v1:0.w).h\n\t"
" vmem(%4 + #0) = vtmp.new }\n\t"
"v0 = vmem(%4 + #0)\n\t"
"v0.h = vdeal(v0.h)\n\t" /* deal the elements to get the order back */
"vmem(%4 + #0) = v0\n\t"
: : "r"(half_predicates), "r"(vtcm.vscatter16_32), "r"(region_len),
"r"(word_offsets), "r"(vtcm.vgather16_32), "r"(init)
: "r1", "q0", "m0", "v0", "v1", "memory");
sync_gather(vtcm.vgather16_32);
}
static void check_buffer(const char *name, void *c, void *r, size_t size)
{
char *check = (char *)c;
char *ref = (char *)r;
for (int i = 0; i < size; i++) {
if (check[i] != ref[i]) {
printf("ERROR %s [%d]: 0x%x (%c) != 0x%x (%c)\n", name, i,
check[i], check[i], ref[i], ref[i]);
err++;
}
}
}
/*
* These scalar functions are the C equivalents of the vector functions that
* use HVX
*/
/* scatter the 16 bit elements using C */
void scalar_scatter_16(unsigned short *vscatter16)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter16[half_offsets[i] / 2] = half_values[i];
}
}
void check_scatter_16()
{
memset(vscatter16_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16(vscatter16_ref);
check_buffer(__func__, vtcm.vscatter16, vscatter16_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* scatter the 16 bit elements using C */
void scalar_scatter_16_acc(unsigned short *vscatter16)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter16[half_offsets[i] / 2] += half_values_acc[i];
}
}
/* scatter-accumulate the 16 bit elements using C */
void check_scatter_16_acc()
{
memset(vscatter16_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16(vscatter16_ref);
scalar_scatter_16_acc(vscatter16_ref);
check_buffer(__func__, vtcm.vscatter16, vscatter16_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* masked scatter the 16 bit elements using C */
void scalar_scatter_16_masked(unsigned short *vscatter16)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
if (half_predicates[i]) {
vscatter16[half_offsets[i] / 2] = half_values_masked[i];
}
}
}
void check_scatter_16_masked()
{
memset(vscatter16_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16(vscatter16_ref);
scalar_scatter_16_acc(vscatter16_ref);
scalar_scatter_16_masked(vscatter16_ref);
check_buffer(__func__, vtcm.vscatter16, vscatter16_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* scatter the 32 bit elements using C */
void scalar_scatter_32(unsigned int *vscatter32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter32[word_offsets[i] / 4] = word_values[i];
}
}
void check_scatter_32()
{
memset(vscatter32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
scalar_scatter_32(vscatter32_ref);
check_buffer(__func__, vtcm.vscatter32, vscatter32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
/* scatter-accumulate the 32 bit elements using C */
void scalar_scatter_32_acc(unsigned int *vscatter32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter32[word_offsets[i] / 4] += word_values_acc[i];
}
}
void check_scatter_32_acc()
{
memset(vscatter32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
scalar_scatter_32(vscatter32_ref);
scalar_scatter_32_acc(vscatter32_ref);
check_buffer(__func__, vtcm.vscatter32, vscatter32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
/* masked scatter the 32 bit elements using C */
void scalar_scatter_32_masked(unsigned int *vscatter32)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
if (word_predicates[i]) {
vscatter32[word_offsets[i] / 4] = word_values_masked[i];
}
}
}
void check_scatter_32_masked()
{
memset(vscatter32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
scalar_scatter_32(vscatter32_ref);
scalar_scatter_32_acc(vscatter32_ref);
scalar_scatter_32_masked(vscatter32_ref);
check_buffer(__func__, vtcm.vscatter32, vscatter32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
/* scatter the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter16_32[word_offsets[i] / 2] = half_values[i];
}
}
void check_scatter_16_32()
{
memset(vscatter16_32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16_32(vscatter16_32_ref);
check_buffer(__func__, vtcm.vscatter16_32, vscatter16_32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* scatter-accumulate the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32_acc(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vscatter16_32[word_offsets[i] / 2] += half_values_acc[i];
}
}
void check_scatter_16_32_acc()
{
memset(vscatter16_32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16_32(vscatter16_32_ref);
scalar_scatter_16_32_acc(vscatter16_32_ref);
check_buffer(__func__, vtcm.vscatter16_32, vscatter16_32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* masked scatter the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32_masked(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
if (half_predicates[i]) {
vscatter16_32[word_offsets[i] / 2] = half_values_masked[i];
}
}
}
void check_scatter_16_32_masked()
{
memset(vscatter16_32_ref, FILL_CHAR,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
scalar_scatter_16_32(vscatter16_32_ref);
scalar_scatter_16_32_acc(vscatter16_32_ref);
scalar_scatter_16_32_masked(vscatter16_32_ref);
check_buffer(__func__, vtcm.vscatter16_32, vscatter16_32_ref,
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
/* gather the elements from the scatter buffer using C */
void scalar_gather_16(unsigned short *vgather16)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vgather16[i] = vtcm.vscatter16[half_offsets[i] / 2];
}
}
void check_gather_16()
{
memset(vgather16_ref, 0, MATRIX_SIZE * sizeof(unsigned short));
scalar_gather_16(vgather16_ref);
check_buffer(__func__, vtcm.vgather16, vgather16_ref,
MATRIX_SIZE * sizeof(unsigned short));
}
/* masked gather the elements from the scatter buffer using C */
void scalar_gather_16_masked(unsigned short *vgather16)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
if (half_predicates[i]) {
vgather16[i] = vtcm.vscatter16[half_offsets[i] / 2];
}
}
}
void check_gather_16_masked()
{
memset(vgather16_ref, gather_16_masked_init(),
MATRIX_SIZE * sizeof(unsigned short));
scalar_gather_16_masked(vgather16_ref);
check_buffer(__func__, vtcm.vgather16, vgather16_ref,
MATRIX_SIZE * sizeof(unsigned short));
}
/* gather the elements from the scatter32 buffer using C */
void scalar_gather_32(unsigned int *vgather32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vgather32[i] = vtcm.vscatter32[word_offsets[i] / 4];
}
}
void check_gather_32(void)
{
memset(vgather32_ref, 0, MATRIX_SIZE * sizeof(unsigned int));
scalar_gather_32(vgather32_ref);
check_buffer(__func__, vtcm.vgather32, vgather32_ref,
MATRIX_SIZE * sizeof(unsigned int));
}
/* masked gather the elements from the scatter32 buffer using C */
void scalar_gather_32_masked(unsigned int *vgather32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
if (word_predicates[i]) {
vgather32[i] = vtcm.vscatter32[word_offsets[i] / 4];
}
}
}
void check_gather_32_masked(void)
{
memset(vgather32_ref, gather_32_masked_init(),
MATRIX_SIZE * sizeof(unsigned int));
scalar_gather_32_masked(vgather32_ref);
check_buffer(__func__, vtcm.vgather32,
vgather32_ref, MATRIX_SIZE * sizeof(unsigned int));
}
/* gather the elements from the scatter16_32 buffer using C */
void scalar_gather_16_32(unsigned short *vgather16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
vgather16_32[i] = vtcm.vscatter16_32[word_offsets[i] / 2];
}
}
void check_gather_16_32(void)
{
memset(vgather16_32_ref, 0, MATRIX_SIZE * sizeof(unsigned short));
scalar_gather_16_32(vgather16_32_ref);
check_buffer(__func__, vtcm.vgather16_32, vgather16_32_ref,
MATRIX_SIZE * sizeof(unsigned short));
}
/* masked gather the elements from the scatter16_32 buffer using C */
void scalar_gather_16_32_masked(unsigned short *vgather16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
if (half_predicates[i]) {
vgather16_32[i] = vtcm.vscatter16_32[word_offsets[i] / 2];
}
}
}
void check_gather_16_32_masked(void)
{
memset(vgather16_32_ref, gather_16_masked_init(),
MATRIX_SIZE * sizeof(unsigned short));
scalar_gather_16_32_masked(vgather16_32_ref);
check_buffer(__func__, vtcm.vgather16_32, vgather16_32_ref,
MATRIX_SIZE * sizeof(unsigned short));
}
/* print scatter16 buffer */
void print_scatter16_buffer(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 16 bit scatter buffer");
for (int i = 0; i < SCATTER_BUFFER_SIZE; i++) {
if ((i % MATRIX_SIZE) == 0) {
printf("\n");
}
for (int j = 0; j < 2; j++) {
printf("%c", (char)((vtcm.vscatter16[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
/* print the gather 16 buffer */
void print_gather_result_16(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 16 bit gather result\n");
for (int i = 0; i < MATRIX_SIZE; i++) {
for (int j = 0; j < 2; j++) {
printf("%c", (char)((vtcm.vgather16[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
/* print the scatter32 buffer */
void print_scatter32_buffer(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 32 bit scatter buffer");
for (int i = 0; i < SCATTER_BUFFER_SIZE; i++) {
if ((i % MATRIX_SIZE) == 0) {
printf("\n");
}
for (int j = 0; j < 4; j++) {
printf("%c", (char)((vtcm.vscatter32[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
/* print the gather 32 buffer */
void print_gather_result_32(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 32 bit gather result\n");
for (int i = 0; i < MATRIX_SIZE; i++) {
for (int j = 0; j < 4; j++) {
printf("%c", (char)((vtcm.vgather32[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
/* print the scatter16_32 buffer */
void print_scatter16_32_buffer(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 16_32 bit scatter buffer");
for (int i = 0; i < SCATTER_BUFFER_SIZE; i++) {
if ((i % MATRIX_SIZE) == 0) {
printf("\n");
}
for (int j = 0; j < 2; j++) {
printf("%c",
(unsigned char)((vtcm.vscatter16_32[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
/* print the gather 16_32 buffer */
void print_gather_result_16_32(void)
{
if (PRINT_DATA) {
printf("\n\nPrinting the 16_32 bit gather result\n");
for (int i = 0; i < MATRIX_SIZE; i++) {
for (int j = 0; j < 2; j++) {
printf("%c",
(unsigned char)((vtcm.vgather16_32[i] >> j * 8) & 0xff));
}
printf(" ");
}
printf("\n");
}
}
int main()
{
prefill_vtcm_scratch();
/* 16 bit elements with 16 bit offsets */
create_offsets_values_preds_16();
vector_scatter_16();
print_scatter16_buffer();
check_scatter_16();
vector_gather_16();
print_gather_result_16();
check_gather_16();
vector_gather_16_masked();
print_gather_result_16();
check_gather_16_masked();
vector_scatter_16_acc();
print_scatter16_buffer();
check_scatter_16_acc();
vector_scatter_16_masked();
print_scatter16_buffer();
check_scatter_16_masked();
/* 32 bit elements with 32 bit offsets */
create_offsets_values_preds_32();
vector_scatter_32();
print_scatter32_buffer();
check_scatter_32();
vector_gather_32();
print_gather_result_32();
check_gather_32();
vector_gather_32_masked();
print_gather_result_32();
check_gather_32_masked();
vector_scatter_32_acc();
print_scatter32_buffer();
check_scatter_32_acc();
vector_scatter_32_masked();
print_scatter32_buffer();
check_scatter_32_masked();
/* 16 bit elements with 32 bit offsets */
create_offsets_values_preds_16_32();
vector_scatter_16_32();
print_scatter16_32_buffer();
check_scatter_16_32();
vector_gather_16_32();
print_gather_result_16_32();
check_gather_16_32();
vector_gather_16_32_masked();
print_gather_result_16_32();
check_gather_16_32_masked();
vector_scatter_16_32_acc();
print_scatter16_32_buffer();
check_scatter_16_32_acc();
vector_scatter_16_32_masked();
print_scatter16_32_buffer();
check_scatter_16_32_masked();
puts(err ? "FAIL" : "PASS");
return err;
}
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