__lsx_bnz_w
LSX intrinsic · group: Branch
Synopsis
int __lsx_bnz_w (__m128i a)
#include <lsxintrin.h>
Instruction: vsetallnez.w fcc, vr; bcnez
CPU Flags: LSX
Description
Expected to be used in branches: branch if all 32-bit elements in a are non-zero.
Operation
dst = 1;
for (int i = 0; i < 4; i++) {
if (a.word[i] == 0) {
dst = 0;
}
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | N/A | 2 |
| 3A6000 | LA664 | N/A | 2 |
| 3C6000 | LA664 | N/A | 2 |
| 2K1000LA | LA264 | N/A | 1 |
| 2K3000 | LA364E | N/A | 1 |