They are not dialect conversions

Oct 13, 2025 by wbrum.org 99 views

[Metal Direct] Move AttachMetalLayout & OptimizeTensorLayout passes to TTIR Transforms

In the Metal Direct project, the AttachMetalLayout and OptimizeTensorLayout passes are currently located under lib/Conversion/TTIRToTTMetal. However, these passes do not belong to the conversion process between TTIR and TT Metal dialects. Instead, they are self-contained transformations within the TTIR dialect. This article discusses the proposal to move these passes to lib/Dialect/TTIR/Transforms for better organization and consistency within the repository.

The primary reason for moving the AttachMetalLayout and OptimizeTensorLayout passes is that they do not fit the conversion process between TTIR and TT Metal dialects. These passes are not responsible for converting TTIR to TT Metal or vice versa; rather, they are designed to perform specific transformations within the TTIR dialect.

They are not dialect conversions

The AttachMetalLayout and OptimizeTensorLayout passes are not dialect conversions because they do not change the underlying dialect of the code. Instead, they modify the code within the TTIR dialect to optimize it for Metal execution. This is a crucial distinction, as dialect conversions are typically responsible for changing the dialect of the code, whereas these passes are focused on optimizing the code within a specific dialect.

They are self-contained transformations

The AttachMetalLayout and OptimizeTensorLayout passes are self-contained transformations because they can be applied independently of the conversion process between TTIR and TT Metal dialects. These passes can be used to optimize TTIR code without requiring the conversion to TT Metal, making them a valuable addition to the TTIR dialect.

Moving the AttachMetalLayout and OptimizeTensorLayout passes to lib/Dialect/TTIR/Transforms offers several benefits:

Improved organization

By moving these passes to the TTIR dialect, the code becomes more organized and easier to navigate. The passes are now located with other transformations within the TTIR dialect, making it simpler to find and understand the code.

Consistency

The move ensures consistency within the repository by placing similar transformations together. This consistency is essential for maintaining a well-structured and easy-to-understand codebase.

No functional change

The move does not introduce any functional changes to the code. The AttachMetalLayout and OptimizeTensorLayout passes will continue to perform the same transformations, but they will now be located in a more suitable place within the repository.

To implement the move, the following steps can be taken:

Create a new directory: Create a new directory lib/Dialect/TTIR/Transforms to hold the AttachMetalLayout and OptimizeTensorLayout passes.
Move the passes: Move the AttachMetalLayout and OptimizeTensorLayout passes from lib/Conversion/TTIRToTTMetal to the new directory lib/Dialect/TTIR/Transforms.
Update the code: Update the code to reference the new location of the passes.

In conclusion, moving the AttachMetalLayout and OptimizeTensorLayout passes to lib/Dialect/TTIR/Transforms is a logical step towards improving the organization and consistency of the Metal Direct project. This move does not introduce any functional changes to the code but ensures that the passes are located in a more suitable place within the repository. By following the steps outlined above, the move can be implemented with minimal disruption to the existing codebase.
[Metal Direct] Move AttachMetalLayout & OptimizeTensorLayout passes to TTIR Transforms: Q&A

In our previous article, we discussed the proposal to move the AttachMetalLayout and OptimizeTensorLayout passes from lib/Conversion/TTIRToTTMetal to lib/Dialect/TTIR/Transforms. This move aims to improve the organization and consistency of the Metal Direct project. In this Q&A article, we will address some of the frequently asked questions related to this proposal.

A: The AttachMetalLayout and OptimizeTensorLayout passes are being moved because they do not belong to the conversion process between TTIR and TT Metal dialects. Instead, they are self-contained transformations within the TTIR dialect. By moving them to lib/Dialect/TTIR/Transforms, we can improve the organization and consistency of the code.

A: A dialect conversion is responsible for changing the underlying dialect of the code, whereas a transformation is a self-contained operation that can be applied to the code within a specific dialect. The AttachMetalLayout and OptimizeTensorLayout passes are transformations because they modify the code within the TTIR dialect without changing its underlying dialect.

A: No, the move will not affect the functionality of the code. The AttachMetalLayout and OptimizeTensorLayout passes will continue to perform the same transformations, but they will now be located in a more suitable place within the repository.

A: The move will improve the organization of the code by placing similar transformations together. The AttachMetalLayout and OptimizeTensorLayout passes will now be located with other transformations within the TTIR dialect, making it simpler to find and understand the code.

A: Consistency in the codebase is essential for maintaining a well-structured and easy-to-understand codebase. By placing similar transformations together, we can ensure that the code is consistent and easier to navigate.

A: To implement the move, you can follow these steps:

Create a new directory: Create a new directory lib/Dialect/TTIR/Transforms to hold the AttachMetalLayout and OptimizeTensorLayout passes.
Move the passes: Move the AttachMetalLayout and OptimizeTensorLayout passes from lib/Conversion/TTIRToTTMetal to the new directory lib/Dialect/TTIR/Transforms.
Update the code: Update the code to reference the new location of the passes.

In conclusion, the move of the AttachMetalLayout and OptimizeTensorLayout passes to lib/Dialect/TTIR/Transforms is a logical step towards improving the organization and consistency of the Metal Direct project. By addressing the frequently asked questions related to this proposal, we can ensure that the move is implemented smoothly and with minimal disruption to the existing codebase.