swar64-8x8b-pragma.c
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/* -----------------------------------------------------------------------------
* Copyright (C) 2018-2020 daiteq s.r.o. http://www.daiteq.com
*
* This program is distributed WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE.
*
* -----------------------------------------------------------------------------
* Filename : swar-4x8b-pragma.c
* Authors : Roman Bartosinski
* Description : simple test of clang/LLVM compiler with SWAR extension
* Release :
* Version :
* Date :
* -----------------------------------------------------------------------------
*/
////A: --has-swar
//C: -daiteq-swar-enable
//#include <stdio.h>
#include <stdint.h>
typedef uint64_t su8x8b __attribute__((subword(8,8)));
#define LEN 3
su8x8b data_a[LEN] = {{1,2,3,4,5,6,7,8},{11,12,13,14,15,16,17,18},{21,22,23,24,25,26,27,28}};
su8x8b data_b[LEN] = {{10,20,30,40,50,60,70,80},{110,120,130,140,150,160,170,180},{210,215,220,225,230,235,240,245}};
su8x8b data_z[2*LEN] = {{0},{0},{0},{0},{0},{0}};
void do_8x8b_add(void)
{
data_z[0] = data_a[0] + data_b[0];
data_z[1] = data_a[1] + data_b[1];
data_z[2] = data_a[2] + data_b[2];
#pragma swar saturate
data_z[3] = data_a[0] + data_b[0];
data_z[4] = data_a[1] + data_b[1];
data_z[5] = data_a[2] + data_b[2];
}
int main(void)
{
volatile uint64_t a;
//__builtin_swarctrl(0);
a = __builtin_swaraccum(0);
a = __builtin_swaraccum(1);
a = __builtin_swaraccum(2);
a = __builtin_swaraccum(3);
do_8x8b_add();
a = __builtin_swaraccum(0);
a = __builtin_swaraccum(1);
a = __builtin_swaraccum(2);
a = __builtin_swaraccum(3);
return 0;
}