[all-commits] [llvm/llvm-project] bb1f22: [mlir][tosa] Fix negate lowering to skip no-op cas...

[Vitalii Shutov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bb1f220d534b0f6d80bea36662f5188ff11c2e54
      https://github.com/llvm/llvm-project/commit/bb1f220d534b0f6d80bea36662f5188ff11c2e54
  Author: Vitalii Shutov <vitalii.shutov at arm.com>
  Date:   2026-01-05 (Mon, 05 Jan 2026)

  Changed paths:
    M mlir/lib/Conversion/TosaToLinalg/TosaToLinalg.cpp
    M mlir/test/Conversion/TosaToLinalg/tosa-to-linalg.mlir

  Log Message:
  -----------
  [mlir][tosa] Fix negate lowering to skip no-op casts (#173299)

Fix TOSA negate lowering to avoid emitting same-width
`ExtSIOp`/`TruncIOp`, which the arith verifier now rejects. Behavior is
unchanged. We only skip no-op casts when operand and intermediate widths
already match. Adds a regression test ensuring the lowering for integer
negates doesn't produce verifier-invalid casts.



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