[PATCH] D101817: [MC][X86] Automatic alignment for Macro-Op Fusion

[Amir Ayupov via Phabricator via llvm-commits]

Amir added a comment.

@skan:
The big picture is that NeverAlign fragment insertion is controlled by a client (BOLT), while BoundaryAlign insertion is done automatically. This automatic macro-fusion alignment might be useful as a standalone performance optimization.
This diff leverages the infrastructure to detect eligible macro-fusion pairs and insert BoundaryAlign fragment. I've added logic on top of it to perform macro-fusion alignment when that is requested by an option.


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  https://reviews.llvm.org/D101817/new/

https://reviews.llvm.org/D101817