RFR 8249893: AARCH64: optimize the construction of the value from the bits of the other two

[Andrew Haley]

On 23/08/2020 19:20, Boris Ulasevich wrote:
> With the current change all the transformation logic is moved out of
> aarch64.ad file into the common C2 code.
> 
> http://bugs.openjdk.java.net/browse/JDK-8249893
> http://cr.openjdk.java.net/~bulasevich/8249893/webrev.01
> 
> The change in compiler.cpp was done to implicitly ask IGVN to run
> the idealization once again after the loop optimization phase.
> This extra step is necessary to make the BFI transform happen
> only after loop optimization.

This looks rather nice. How did you test it?

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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