github_mirrors/vectorscan
3
0
Fork 1
mirror of https://github.com/VectorCamp/vectorscan.git synced 2025-11-19 18:44:24 +03:00
Code Issues Packages Projects Releases Wiki Activity

simd_utils: setbit/clearbit by loading 1-bit mask

Browse Source
This commit is contained in:
Justin Viiret
2016-05-13 09:39:26 +10:00
committed by Matthew Barr
parent 790683b641
commit 49bb3b5c82
2 changed files with 50 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/util/simd_utils.c
View File

@@ -26,6 +26,10 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
/** \file
* \brief Lookup tables to support SIMD operations.
*/
#include "simd_utils.h"
const char vbs_mask_data[] ALIGN_CL_DIRECTIVE = {
@@ -38,3 +42,19 @@ const char vbs_mask_data[] ALIGN_CL_DIRECTIVE = {
0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0,
0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0,
};
#define ZEROES_8 0, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_31 ZEROES_8, ZEROES_8, ZEROES_8, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_32 ZEROES_8, ZEROES_8, ZEROES_8, ZEROES_8
/** \brief LUT for the mask1bit functions. */
const u8 simd_onebit_masks[] ALIGN_CL_DIRECTIVE = {
ZEROES_31, 0x01, ZEROES_32,
ZEROES_31, 0x02, ZEROES_32,
ZEROES_31, 0x04, ZEROES_32,
ZEROES_31, 0x08, ZEROES_32,
ZEROES_31, 0x10, ZEROES_32,
ZEROES_31, 0x20, ZEROES_32,
ZEROES_31, 0x40, ZEROES_32,
ZEROES_31, 0x80, ZEROES_32,
};