[all-commits] [llvm/llvm-project] 586603: [mlir] Add `MLIR_USE_FALLBACK_TYPE_IDS` macro supp...

[Stef Lindall via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5866032834ae6afc548c8240ec7df2a8564ecd95
      https://github.com/llvm/llvm-project/commit/5866032834ae6afc548c8240ec7df2a8564ecd95
  Author: Stef Lindall <bethebunny at gmail.com>
  Date:   2025-02-14 (Fri, 14 Feb 2025)

  Changed paths:
    M mlir/include/mlir/Support/TypeID.h
    M mlir/lib/Support/TypeID.cpp

  Log Message:
  -----------
  [mlir] Add `MLIR_USE_FALLBACK_TYPE_IDS` macro support for `TypeID` (#126999)

Adds a macro definition `MLIR_USE_FALLBACK_TYPE_IDS`. When this is
defined, the `MLIR_{DECLARE,DEFINE}_EXPLICIT_TYPE_ID` functions
explicitly fall back to string comparison.

This is useful for complex shared library setups
where it may be difficult to agree on a source of truth for specific
type ID resolution. As long as there is a single resolution for
`registerImplicitTypeID`, all type IDs can be reference a shared
registration. This way types which are logically shared across multiple
DSOs can have the same type ID, even if their definitions are
duplicated.



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