__lsx_vdiv_h
LSX intrinsic · group: Integer Computation
Synopsis
__m128i __lsx_vdiv_h (__m128i a, __m128i b)
#include <lsxintrin.h>
Instruction: vdiv.h vr, vr, vr
CPU Flags: LSX
Description
Divide each signed 16-bit element in a by the corresponding element in b.
Operation
for (int i = 0; i < 8; i++) {
dst.half[i] = (b.half[i] == 0) ? 0 : ((s16)a.half[i] / (s16)b.half[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 17, 21.5 | 0.09(1/11) |
| 3A6000 | LA664 | 17 | 0.12(1/8.5) |
| 3C6000 | LA664 | 17, 21.5 | 0.13(1/7.5) |
| 2K1000LA | LA264 | 18, 36 | 0.03(1/31) |
| 2K3000 | LA364E | 18, 27 | 0.03(1/31) |