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qemu-e2k/tests/tcg/hexagon/scatter_gather.c
Taylor Simpson 62e93b084c Hexagon HVX (tests/tcg/hexagon) scatter_gather test 
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
2021-11-03 16:01:38 -05:00

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/*
* Copyright(c) 2019-2021 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)));
#define VSCATTER_16(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermh_128B((int)BASE, RGN, OFF, VALS)
#define VSCATTER_16_MASKED(MASK, BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermhq_128B(MASK, (int)BASE, RGN, OFF, VALS)
#define VSCATTER_32(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermw_128B((int)BASE, RGN, OFF, VALS)
#define VSCATTER_32_MASKED(MASK, BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermwq_128B(MASK, (int)BASE, RGN, OFF, VALS)
#define VSCATTER_16_32(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermhw_128B((int)BASE, RGN, OFF, VALS)
#define VSCATTER_16_32_MASKED(MASK, BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermhwq_128B(MASK, (int)BASE, RGN, OFF, VALS)
#define VSCATTER_16_ACC(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermh_add_128B((int)BASE, RGN, OFF, VALS)
#define VSCATTER_32_ACC(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermw_add_128B((int)BASE, RGN, OFF, VALS)
#define VSCATTER_16_32_ACC(BASE, RGN, OFF, VALS) \
__builtin_HEXAGON_V6_vscattermhw_add_128B((int)BASE, RGN, OFF, VALS)
#define VGATHER_16(DSTADDR, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermh_128B(DSTADDR, (int)BASE, RGN, OFF)
#define VGATHER_16_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermhq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
#define VGATHER_32(DSTADDR, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermw_128B(DSTADDR, (int)BASE, RGN, OFF)
#define VGATHER_32_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermwq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
#define VGATHER_16_32(DSTADDR, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermhw_128B(DSTADDR, (int)BASE, RGN, OFF)
#define VGATHER_16_32_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
__builtin_HEXAGON_V6_vgathermhwq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
#define VSHUFF_H(V) \
__builtin_HEXAGON_V6_vshuffh_128B(V)
#define VSPLAT_H(X) \
__builtin_HEXAGON_V6_lvsplath_128B(X)
#define VAND_VAL(PRED, VAL) \
__builtin_HEXAGON_V6_vandvrt_128B(PRED, VAL)
#define VDEAL_H(V) \
__builtin_HEXAGON_V6_vdealh_128B(V)
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];
unsigned int word_offsets[MATRIX_SIZE];
/* declare the arrays of values */
unsigned short half_values[MATRIX_SIZE];
unsigned short half_values_acc[MATRIX_SIZE];
unsigned short half_values_masked[MATRIX_SIZE];
unsigned int word_values[MATRIX_SIZE];
unsigned int word_values_acc[MATRIX_SIZE];
unsigned int word_values_masked[MATRIX_SIZE];
/* declare the arrays of predicates */
unsigned short half_predicates[MATRIX_SIZE];
unsigned int word_predicates[MATRIX_SIZE];
/* make this big enough for all the intrinsics */
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 intrinsics */
void vector_scatter_16(void)
{
/* copy the offsets and values to vectors */
HVX_Vector offsets = *(HVX_Vector *)half_offsets;
HVX_Vector values = *(HVX_Vector *)half_values;
VSCATTER_16(&vtcm.vscatter16, region_len, offsets, values);
sync_scatter(vtcm.vscatter16);
}
/* scatter-accumulate the 16 bit elements using intrinsics */
void vector_scatter_16_acc(void)
{
/* copy the offsets and values to vectors */
HVX_Vector offsets = *(HVX_Vector *)half_offsets;
HVX_Vector values = *(HVX_Vector *)half_values_acc;
VSCATTER_16_ACC(&vtcm.vscatter16, region_len, offsets, values);
sync_scatter(vtcm.vscatter16);
}
/* scatter the 16 bit elements using intrinsics */
void vector_scatter_16_masked(void)
{
/* copy the offsets and values to vectors */
HVX_Vector offsets = *(HVX_Vector *)half_offsets;
HVX_Vector values = *(HVX_Vector *)half_values_masked;
HVX_Vector pred_reg = *(HVX_Vector *)half_predicates;
HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
VSCATTER_16_MASKED(preds, &vtcm.vscatter16, region_len, offsets, values);
sync_scatter(vtcm.vscatter16);
}
/* scatter the 32 bit elements using intrinsics */
void vector_scatter_32(void)
{
/* copy the offsets and values to vectors */
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];
VSCATTER_32(&vtcm.vscatter32, region_len, offsetslo, valueslo);
VSCATTER_32(&vtcm.vscatter32, region_len, offsetshi, valueshi);
sync_scatter(vtcm.vscatter32);
}
/* scatter-acc the 32 bit elements using intrinsics */
void vector_scatter_32_acc(void)
{
/* copy the offsets and values to vectors */
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];
VSCATTER_32_ACC(&vtcm.vscatter32, region_len, offsetslo, valueslo);
VSCATTER_32_ACC(&vtcm.vscatter32, region_len, offsetshi, valueshi);
sync_scatter(vtcm.vscatter32);
}
/* scatter the 32 bit elements using intrinsics */
void vector_scatter_32_masked(void)
{
/* copy the offsets and values to vectors */
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 pred_reglo = *(HVX_Vector *)word_predicates;
HVX_Vector pred_reghi = *(HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
HVX_VectorPred predslo = VAND_VAL(pred_reglo, ~0);
HVX_VectorPred predshi = VAND_VAL(pred_reghi, ~0);
VSCATTER_32_MASKED(predslo, &vtcm.vscatter32, region_len, offsetslo,
valueslo);
VSCATTER_32_MASKED(predshi, &vtcm.vscatter32, region_len, offsetshi,
valueshi);
sync_scatter(vtcm.vscatter16);
}
/* scatter the 16 bit elements with 32 bit offsets using intrinsics */
void vector_scatter_16_32(void)
{
HVX_VectorPair offsets;
HVX_Vector values;
/* get the word offsets in a vector pair */
offsets = *(HVX_VectorPair *)word_offsets;
/* these values need to be shuffled for the scatter */
values = *(HVX_Vector *)half_values;
values = VSHUFF_H(values);
VSCATTER_16_32(&vtcm.vscatter16_32, region_len, offsets, values);
sync_scatter(vtcm.vscatter16_32);
}
/* scatter-acc the 16 bit elements with 32 bit offsets using intrinsics */
void vector_scatter_16_32_acc(void)
{
HVX_VectorPair offsets;
HVX_Vector values;
/* get the word offsets in a vector pair */
offsets = *(HVX_VectorPair *)word_offsets;
/* these values need to be shuffled for the scatter */
values = *(HVX_Vector *)half_values_acc;
values = VSHUFF_H(values);
VSCATTER_16_32_ACC(&vtcm.vscatter16_32, region_len, offsets, values);
sync_scatter(vtcm.vscatter16_32);
}
/* masked scatter the 16 bit elements with 32 bit offsets using intrinsics */
void vector_scatter_16_32_masked(void)
{
HVX_VectorPair offsets;
HVX_Vector values;
HVX_Vector pred_reg;
/* get the word offsets in a vector pair */
offsets = *(HVX_VectorPair *)word_offsets;
/* these values need to be shuffled for the scatter */
values = *(HVX_Vector *)half_values_masked;
values = VSHUFF_H(values);
pred_reg = *(HVX_Vector *)half_predicates;
pred_reg = VSHUFF_H(pred_reg);
HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
VSCATTER_16_32_MASKED(preds, &vtcm.vscatter16_32, region_len, offsets,
values);
sync_scatter(vtcm.vscatter16_32);
}
/* gather the elements from the scatter16 buffer */
void vector_gather_16(void)
{
HVX_Vector *vgather = (HVX_Vector *)&vtcm.vgather16;
HVX_Vector offsets = *(HVX_Vector *)half_offsets;
VGATHER_16(vgather, &vtcm.vscatter16, region_len, offsets);
sync_gather(vgather);
}
static unsigned short gather_16_masked_init(void)
{
char letter = '?';
return letter | (letter << 8);
}
void vector_gather_16_masked(void)
{
HVX_Vector *vgather = (HVX_Vector *)&vtcm.vgather16;
HVX_Vector offsets = *(HVX_Vector *)half_offsets;
HVX_Vector pred_reg = *(HVX_Vector *)half_predicates;
HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
*vgather = VSPLAT_H(gather_16_masked_init());
VGATHER_16_MASKED(vgather, preds, &vtcm.vscatter16, region_len, offsets);
sync_gather(vgather);
}
/* gather the elements from the scatter32 buffer */
void vector_gather_32(void)
{
HVX_Vector *vgatherlo = (HVX_Vector *)&vtcm.vgather32;
HVX_Vector *vgatherhi =
(HVX_Vector *)((int)&vtcm.vgather32 + (MATRIX_SIZE * 2));
HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
VGATHER_32(vgatherlo, &vtcm.vscatter32, region_len, offsetslo);
VGATHER_32(vgatherhi, &vtcm.vscatter32, region_len, offsetshi);
sync_gather(vgatherhi);
}
static unsigned int gather_32_masked_init(void)
{
char letter = '?';
return letter | (letter << 8) | (letter << 16) | (letter << 24);
}
void vector_gather_32_masked(void)
{
HVX_Vector *vgatherlo = (HVX_Vector *)&vtcm.vgather32;
HVX_Vector *vgatherhi =
(HVX_Vector *)((int)&vtcm.vgather32 + (MATRIX_SIZE * 2));
HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
HVX_Vector pred_reglo = *(HVX_Vector *)word_predicates;
HVX_VectorPred predslo = VAND_VAL(pred_reglo, ~0);
HVX_Vector pred_reghi = *(HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
HVX_VectorPred predshi = VAND_VAL(pred_reghi, ~0);
*vgatherlo = VSPLAT_H(gather_32_masked_init());
*vgatherhi = VSPLAT_H(gather_32_masked_init());
VGATHER_32_MASKED(vgatherlo, predslo, &vtcm.vscatter32, region_len,
offsetslo);
VGATHER_32_MASKED(vgatherhi, predshi, &vtcm.vscatter32, region_len,
offsetshi);
sync_gather(vgatherlo);
sync_gather(vgatherhi);
}
/* gather the elements from the scatter16_32 buffer */
void vector_gather_16_32(void)
{
HVX_Vector *vgather;
HVX_VectorPair offsets;
HVX_Vector values;
/* get the vtcm address to gather from */
vgather = (HVX_Vector *)&vtcm.vgather16_32;
/* get the word offsets in a vector pair */
offsets = *(HVX_VectorPair *)word_offsets;
VGATHER_16_32(vgather, &vtcm.vscatter16_32, region_len, offsets);
/* deal the elements to get the order back */
values = *(HVX_Vector *)vgather;
values = VDEAL_H(values);
/* write it back to vtcm address */
*(HVX_Vector *)vgather = values;
}
void vector_gather_16_32_masked(void)
{
HVX_Vector *vgather;
HVX_VectorPair offsets;
HVX_Vector pred_reg;
HVX_VectorPred preds;
HVX_Vector values;
/* get the vtcm address to gather from */
vgather = (HVX_Vector *)&vtcm.vgather16_32;
/* get the word offsets in a vector pair */
offsets = *(HVX_VectorPair *)word_offsets;
pred_reg = *(HVX_Vector *)half_predicates;
pred_reg = VSHUFF_H(pred_reg);
preds = VAND_VAL(pred_reg, ~0);
*vgather = VSPLAT_H(gather_16_masked_init());
VGATHER_16_32_MASKED(vgather, preds, &vtcm.vscatter16_32, region_len,
offsets);
/* deal the elements to get the order back */
values = *(HVX_Vector *)vgather;
values = VDEAL_H(values);
/* write it back to vtcm address */
*(HVX_Vector *)vgather = values;
}
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];
}
}
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));
}
/* 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 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));
}
/* 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 32 bit elements 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 the 32 bit elements 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));
}
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));
}
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 scatter 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));
}
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 scatter 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));
}
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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