RFR: 8283232: x86: Improve vector broadcast operations [v8]

[Jatin Bhateja]

On Tue, 26 Jul 2022 05:53:31 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> Vector Load/store from memory happens from dedicated ports, can you elaborate why this change will benefit.

Above reference to section 3.5.5.2 also states that FP loads adds another cycle of latency,  but saving the cycles penalty due to bypass b/w FP and SIMD domains still holds good. So may be for load there is no pressing need and existing load vector handling can be kept as it is.

Overall savings from constant table size reductions are very impressive.  Thanks.

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PR: https://git.openjdk.org/jdk/pull/7832