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Date: 2018.9.7
1、参考:
https://community.arm.com/processors/f/discussions/3330/how-aarch32-bit-applications-will-be-supported-on-aarch64
https://community.arm.com/processors/f/discussions/7521/what-is-the-equivalent-instruction-for-qsub-in-armv8
https://community.arm.com/iot/embedded/f/discussions/124/how-to-implement-saturation-instructions-in-armv8-architecture?ReplySortBy=Votes&ReplySortOrder=Descending
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