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[mlir][tosa] Update RFFT2D description to align with TOSA v1.0 spec #129789

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Merged
GeorgeARM merged 1 commit into from
Mar 5, 2025
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[mlir][tosa] Update RFFT2D description to align with TOSA v1.0 spec #129789

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6 changes: 4 additions & 2 deletions mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
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Expand Up @@ -372,8 +372,10 @@ def Tosa_RFFT2dOp : Tosa_InferShapedTypeOp<"rfft2d", [
the input tensor consists of real values producing complex valued output. The
complex output values will be split into the output_real and output_imag
tensor arguments. RFFT2D takes advantage of Hermitian symmetry to only
calculate the first half of the final output axis. Imaginary values with
locations (0,0), (0,W/2), (H/2,0) and (H/2,W/2) are zero.
calculate the first half of the final output axis. Implementations may choose
to skip calculation of the imaginary values at (0,0), (0,W/2), (H/2,0), and
(H/2, W/2). If the calculation is skipped, the result at that location must be
zero.

Example:

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