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Paper: The MLIR Transform Dialect. Your compiler is more powerful than you think

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  Paper: The MLIR Transform Dialect. Your compiler is more powerful than you think John R Levine <johnl@taugh.com> - 2024-09-09 20:43 -0400

#3595 — Paper: The MLIR Transform Dialect. Your compiler is more powerful than you think

The authors adapt the MLIR framework to provide finer grained
control over the sequence of optimization steps a compiler uses.

  To take full advantage of a specific hardware target, performance
  engineers need to gain control on compilers in order to leverage their
  domain knowledge about the program and hardware. Yet, modern compilers
  are poorly controlled, usually by configuring a sequence of coarse-grained
  monolithic black-box passes, or by means of predefined compiler
  annotations/pragmas. These can be effective, but often do not let users
  precisely optimize their varying compute loads. As a consequence,
  performance engineers have to resort to implementing custom passes for a
  specific optimization heuristic, requiring compiler engineering expert
  knowledge.

  In this paper, we present a technique that provides fine-grained control
  of general-purpose compilers by introducing the Transform dialect, a
  controllable IR-based transformation system implemented in MLIR. The
  Transform dialect empowers performance engineers to optimize their
  various compute loads by composing and reusing existing - but currently hidden -
  compiler features without the need to implement new passes or even
  rebuilding the compiler.

  We demonstrate in five case studies that the Transform dialect enables
  precise, safe composition of compiler transformations and allows for
  straightforward integration with state-of-the-art search methods.

https://arxiv.org/abs/2409.03864

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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