[vectorIntrinsics] RFR: 8264469: Add Insert float nodes implementation for Arm SVE

[Xiaohong Gong]

On Wed, 31 Mar 2021 02:50:03 GMT, Wang Huang <whuang at openjdk.org> wrote:

> Add Insert float nodes implementation for Arm SVE, like insertD & insertF

src/hotspot/cpu/aarch64/aarch64_sve_ad.m4 line 1923:

> 1921: VECTOR_INSERT(B, iRegIorL2I, B, Register)
> 1922: VECTOR_INSERT(S, iRegIorL2I, H, Register)
> 1923: VECTOR_INSERT(I, iRegIorL2I, S, Register)

I'm sorry that I didn't look at the implementation PR for integer type. Is it better to merge the rules for "B/H/S" as a single one?

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PR: https://git.openjdk.java.net/panama-vector/pull/56