[all-commits] [llvm/llvm-project] b1b8f6: [mlir][Transforms] Add 1:N support to `replaceUses...

[Matthias Springer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1b8f67eab084f235e9f9b145e4b86b823cccc2b
      https://github.com/llvm/llvm-project/commit/b1b8f67eab084f235e9f9b145e4b86b823cccc2b
  Author: Matthias Springer <me at m-sp.org>
  Date:   2025-06-23 (Mon, 23 Jun 2025)

  Changed paths:
    M mlir/include/mlir/Transforms/DialectConversion.h
    M mlir/lib/Conversion/FuncToLLVM/FuncToLLVM.cpp
    M mlir/lib/Transforms/Utils/DialectConversion.cpp
    M mlir/test/Transforms/test-legalizer.mlir
    M mlir/test/lib/Dialect/Test/TestPatterns.cpp

  Log Message:
  -----------
  [mlir][Transforms] Add 1:N support to `replaceUsesOfBlockArgument` (#145171)

This commit adds 1:N support to
`ConversionPatternRewriter::replaceUsesOfBlockArgument`. This was one of
the few remaining dialect conversion APIs that does not support 1:N
conversions yet.

This commit also reuses `replaceUsesOfBlockArgument` in the
implementation of `applySignatureConversion`. This is in preparation of
the One-Shot Dialect Conversion refactoring. The goal is to bring the
`applySignatureConversion` implementation into a state where it works
both with and without rollbacks. To that end, `applySignatureConversion`
should not directly access the `mapping`.



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