Add lowering for unary wave ops

[martin-luecke]

This introduces a generic unary op lowering pattern for Wave ops operating on a float-like operand and wires it into the lowering pass.

• Lowers wave.exp2 to math.exp2, supporting scalar, vector, and tensor float-like types.
• Adds a test to verify the wave.exp2 lowering.

[Copilot]

Pull Request Overview

This PR adds support for lowering the Wave dialect's exp2 operation to MLIR's math.exp2 operation. The implementation follows the existing pattern established for binary operations, introducing a generic unary operation lowering pattern.

Key changes:

• Adds a generic UnaryOpLoweringPattern template for lowering Wave unary operations
• Implements lowering of wave.exp2 to math.exp2 for float-like types
• Adds test coverage for the exp2 lowering

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
water/lib/Dialect/Wave/Transforms/LoweringPatterns.cpp	Implements UnaryOpLoweringPattern template and populateWaveUnaryOpLoweringPatterns function
water/lib/Dialect/Wave/Transforms/LowerWaveToMLIR.cpp	Registers Math dialect, marks wave::Exp2Op as illegal, and calls unary op lowering patterns
water/include/water/Dialect/Wave/Transforms/LoweringPatterns.h	Declares populateWaveUnaryOpLoweringPatterns function
water/include/water/Dialect/Wave/Transforms/Passes.td	Adds Math dialect as a dependent dialect
water/lib/Dialect/Wave/Transforms/CMakeLists.txt	Adds MLIRMathDialect to the link dependencies
water/test/Dialect/Wave/lower-wave-to-mlir.mlir	Adds test case for exp2 lowering

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[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated no new comments.

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