__lsx_vdiv_du
LSX intrinsic · group: Integer Computation
Synopsis
__m128i __lsx_vdiv_du (__m128i a, __m128i b)
#include <lsxintrin.h>
Instruction: vdiv.du vr, vr, vr
CPU Flags: LSX
Description
Divide each unsigned 64-bit element in a by the corresponding element in b.
Operation
for (int i = 0; i < 2; i++) {
dst.dword[i] = (b.dword[i] == 0) ? 0 : ((u64)a.dword[i] / (u64)b.dword[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 8, 18.5 | 0.11(1/9) |
| 3A6000 | LA664 | 8 | 0.25(1/4) |
| 3C6000 | LA664 | 8, 18.5 | 0.33(1/3) |
| 2K1000LA | LA264 | 9 | 0.08(1/12) |
| 2K3000 | LA364E | 9 | 0.08(1/12) |