__lsx_vinsgr2vr_b
LSX intrinsic · group: Misc
Synopsis
__m128i __lsx_vinsgr2vr_b (__m128i a, int b, imm0_15 imm)
#include <lsxintrin.h>
Instruction: vinsgr2vr.b vr, r, imm
CPU Flags: LSX
Description
Insert the low 8 bits of b into lane imm of a; the other lanes are unchanged.
Operation
for (int i = 0; i < 16; i++) {
dst.byte[i] = (i == imm) ? b : a.byte[i];
}
Tested on real machine.
Latency and Throughput
| CPU | µarch | Latency | Throughput (IPC) |
|---|---|---|---|
| 3C5000 | LA464 | 1 | 1 |
| 3A6000 | LA664 | 1 | 1 |
| 3C6000 | LA664 | 1 | 1 |
| 2K1000LA | LA264 | 1 | 1 |
| 2K3000 | LA364E | 1 | 1 |