[PATCH] D136999: [AArch64] Lower READCYCLECOUNTER using MRS CNTVCT_EL0

[Salvatore Dipietro via Phabricator via llvm-commits]

salvatoredipietro added a comment.

For context, MySQL had also to overwrite this function and it is using the CNTVCT_EL0 register for over 3 years now


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  https://reviews.llvm.org/D136999/new/

https://reviews.llvm.org/D136999