__lsx_vssub_bu
LSX intrinsic · group: Integer Computation
Synopsis
__m128i __lsx_vssub_bu (__m128i a, __m128i b)
#include <lsxintrin.h>
Instruction: vssub.bu vr, vr, vr
CPU Flags: LSX
Description
Saturating subtract corresponding unsigned 8-bit elements in b from elements in a, store the result to dst.
Operation
for (int i = 0; i < 16; i++) {
dst.byte[i] = (u8)ssub((u8)a.byte[i], (u8)b.byte[i]);
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 1 | 2 |
| 3A6000 | LA664 | 1 | 4 |
| 3C6000 | LA664 | 1 | 4 |
| 2K1000LA | LA264 | 1 | 1 |
| 2K3000 | LA364E | 1 | 1 |