speed speed-profile

speed和speed-profile是Android N编译模式中的两种选项。speed是一种编译模式，旨在最大化运行时性能，而speed-profile则是一种部分编译模式，根据profile记录的热点函数来编译，也是为了最大化运行时性能。在Android N中，通过设置LOCAL_DEX_PREOPT_FLAGS参数来选择编译模式。如果没有指定编译过滤器，则默认使用speed模式，如果有配置LOCAL_DEX_PREOPT_GENERATE_PROFILE参数为true，则使用speed-profile模式，否则使用quicken模式。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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