gcc或g++编译：SSE2不用给flag##include <immintrin.h> 给flag -march=native

指令速查中文部分（从这里猜测用什么关键词去下面的官方文档中搜）https://packagewjx.github.io/2018/11/12/sse-note/官方（这个超级好，搜索迅速，给了描述、实现指令、头文件、对应指令集标准等）https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html

__m128i__m128i | Microsoft Learn The __m128i data type, for use with the Streaming SIMD Extensions 2 (SSE2) instructions intrinsics, is defined in <emmintrin.h>. eg: /usr/local/gcc-9.3.0/lib...