__lsx_vsubi_bu
LSX intrinsic · group: Integer Computation
Synopsis
__m128i __lsx_vsubi_bu (__m128i a, imm0_31 imm)
#include <lsxintrin.h>
Instruction: vsubi.bu vr, vr, imm
CPU Flags: LSX
Description
Subtract the zero-extended imm from each 8-bit element in a, save the result in dst.
Operation
for (int i = 0; i < 16; i++) {
dst.byte[i] = a.byte[i] - imm;
}
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 |