Proposal for supporting Float4.of for CPU host code and GPU device code

[jjfumero]

This PR adds support for creating float4 objects within the device code:

Float4 f = Float4.of(x, y, z ,w)

In addition, it provides a CPU implementation for this type a new method to operate in lanewise. This operation is CPU only at the moment:

Float4 vA ... 
Float4 vB ... 
Float4 vC = vA.linewise(vB, Float::sum);

---

Progress

• Change must not contain extraneous whitespace

Reviewing

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[bridgekeeper]

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[openjdk]

@jjfumero This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

Proposal for supporting Float4.of for CPU host code and GPU device code

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[mlbridge]

Webrevs

• 07: Full - Incremental (dfb349ce)
• 06: Full - Incremental (aec780a9)
• 05: Full - Incremental (251f1a52)
• 04: Full - Incremental (3c45324c)
• 03: Full - Incremental (fd9c6d3c)
• 02: Full - Incremental (e9864a77)
• 01: Full - Incremental (2f954e0b)
• 00: Full (31e0db21)

[jjfumero]

PR ready and passing for both OpenCL and CUDA.

[jjfumero]

/integrate

[openjdk]

Going to push as commit 420c933.

[openjdk]

@jjfumero Pushed as commit 420c933.

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