feat(cudf): Add NotFunction, IsNullFunction, IsNotNullFunction

[mattgara]

• Implements IS NULL, IS NOT NULL and NOT functions

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[github-actions]

Build Impact Analysis

Full build recommended. Files outside the dependency graph changed:

• velox/experimental/cudf/expression/ExpressionEvaluator.cpp
• velox/experimental/cudf/tests/CMakeLists.txt
• velox/experimental/cudf/tests/LogicalFunctionsTest.cpp

These directories are not fully covered by the dependency graph. A full build is the safest option.

cmake --build _build/release

---

Slow path • Graph generated from PR branch

[devavret]

Small overlap with #16503 but I think @pramodsatya had a different purpose with that, trying to use registry in sidecar.

[devavret]

Instead of making a NotFunction, you can make a UnaryFunction and during registration, provide a factory like so:

Suggested change

	registerCudfFunction(
	"not",
	[](const std::string&, const std::shared_ptr<velox::exec::Expr>& expr) {
	return std::make_shared<NotFunction>(expr);
	},
	registerCudfFunction(
	"not",
	[](const std::string&, const std::shared_ptr<velox::exec::Expr>& expr) {
	return std::make_shared<UnaryFunction>(expr, cudf::unary_operator::NOT);
	},

[pramodsatya]

Small overlap with #16503 but I think @pramodsatya had a different purpose with that, trying to use registry in sidecar.

Noted @devavret, closing #16503 in favor of this PR (17314 subsumes 16503 as you pointed out).
I would still like to get #16504 in for Presto-cuDF functions integration with sidecar, could you please help review this PR?