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2026-07-13 13:33:03 +08:00

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531 B
ArmAsm

//
// MNNGRAYToC4Fast.S
// MNN
//
// Created by MNN on 2024/08/28.
// Copyright © 2018, Alibaba Group Holding Limited
//
#ifdef __arm__
#ifndef __aarch64__
#include "MNNAsmGlobal.h"
.text
.align 5
asm_function MNNGRAYToC4Fast
// void MNNGRAYToC4Fast(const unsigned char* source, unsigned char* dest, size_t count);
// Auto Load: r0: source, r1: dest, r2: count
push {lr}
vmov.i8 d3, #255
L1:
vld1.8 {d0}, [r0]!
vmov d1, d0
vmov d2, d0
vst4.u8 {d0, d1, d2, d3}, [r1]!
subs r2, r2, #1
bne L1
End:
pop {pc}
#endif
#endif