__lasx_xvslei_du
LASX intrinsic · group: Integer Comparison
Synopsis
__m256i __lasx_xvslei_du (__m256i a, imm0_31 imm)
#include <lasxintrin.h>
Instruction: xvslei.du xr, xr, imm
CPU Flags: LASX
Description
Compare the unsigned 64-bit elements in a and the zero-extended imm, store all-ones to dst if corresponding element in a is less than or equal to imm, zero otherwise.
Operation
for (int i = 0; i < 4; i++) {
dst.dword[i] = ((u64)a.dword[i] <= imm) ? 0xFFFFFFFFFFFFFFFF : 0;
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 2 | 2 |
| 3A6000 | LA664 | 2 | 4 |
| 3C6000 | LA664 | 2 | 4 |