__lasx_xvdiv_w
LASX intrinsic · group: Integer Computation
Synopsis
__m256i __lasx_xvdiv_w (__m256i a, __m256i b)
#include <lasxintrin.h>
Instruction: xvdiv.w xr, xr, xr
CPU Flags: LASX
Description
Divide each signed 32-bit element in a by the corresponding element in b.
Operation
for (int i = 0; i < 8; i++) {
dst.word[i] = (b.word[i] == 0) ? 0 : ((s32)a.word[i] / (s32)b.word[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 11, 17.5 | 0.09(1/11.5) |
| 3A6000 | LA664 | 11 | 0.18(1/5.5) |
| 3C6000 | LA664 | 23.5, 30 | 0.13(1/7.5) |