__lasx_xvslt_bu
LASX intrinsic · group: Integer Comparison
Synopsis
__m256i __lasx_xvslt_bu (__m256i a, __m256i b)
#include <lasxintrin.h>
Instruction: xvslt.bu xr, xr, xr
CPU Flags: LASX
Description
Compare the unsigned 8-bit elements in a and b, store all-ones to dst if corresponding element in a is less than b, zero otherwise.
Operation
for (int i = 0; i < 32; i++) {
dst.byte[i] = ((u8)a.byte[i] < (u8)b.byte[i]) ? 0xFF : 0;
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 1 | 2 |
| 3A6000 | LA664 | 1 | 4 |
| 3C6000 | LA664 | 1 | 4 |