RFR: 8275167: x86 intrinsic for unsignedMultiplyHigh [v2]

Wed Oct 20 22:18:09 UTC 2021

On Tue, 19 Oct 2021 20:34:55 GMT, Vamsi Parasa <duke at openjdk.java.net> wrote:

>> Optimize the new Math.unsignedMultiplyHigh using the x86 mul instruction. This change show 1.87X improvement on a micro benchmark.
>
> Vamsi Parasa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   refactoring to remove code duplication by using a common routine for UMulHiLNode and MulHiLNode

Tests passed. You can integrate changes.

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PR: https://git.openjdk.java.net/jdk/pull/5933