__lasx_xvdiv_b
LASX intrinsic · group: Integer Computation
Synopsis
__m256i __lasx_xvdiv_b (__m256i a, __m256i b)
#include <lasxintrin.h>
Instruction: xvdiv.b xr, xr, xr
CPU Flags: LASX
Description
Divide each signed 8-bit element in a by the corresponding element in b.
Operation
for (int i = 0; i < 32; i++) {
dst.byte[i] = (b.byte[i] == 0) ? 0 : ((s8)a.byte[i] / (s8)b.byte[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 32, 36 | 0.05(1/20.5) |
| 3A6000 | LA664 | 29, 32 | 0.06(1/15.5) |
| 3C6000 | LA664 | 55, 57 | 0.04(1/27.5) |