[all-commits] [llvm/llvm-project] 88c1f9: [CodeGen] Fix incorrect rematerialization rollback...

[Lucas Ramirez via All-commits]

  Branch: refs/heads/users/lucas-rami/rematerializer-fix-rollback-order
  Home:   https://github.com/llvm/llvm-project
  Commit: 88c1f9d6772ee3087fdbb323fe7e5422cddacbbf
      https://github.com/llvm/llvm-project/commit/88c1f9d6772ee3087fdbb323fe7e5422cddacbbf
  Author: Lucas Ramirez <lucas.rami at proton.me>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M llvm/include/llvm/CodeGen/Rematerializer.h
    M llvm/lib/CodeGen/Rematerializer.cpp
    M llvm/unittests/CodeGen/RematerializerTest.cpp

  Log Message:
  -----------
  [CodeGen] Fix incorrect rematerialization rollback order

This fixes an issue in the rematerializer's rollbacker wherein adjacent
MIs that were deleted through rematerializations would
sometimes---depending on the exact order in which they were
deleted---not be re-created in their original
pre-rematerialization order. While this does not impact correctness
(i.e., use-def relations are always honored), this goes against the
rollbacker's intent to re-create the MIR exactly as it was
pre-rematerializations (up to slot index changes).


  Commit: 34e390b9dc42a9c9b51c68df6e7e46cad413cb87
      https://github.com/llvm/llvm-project/commit/34e390b9dc42a9c9b51c68df6e7e46cad413cb87
  Author: Lucas Ramirez <lucas.rami at proton.me>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M llvm/include/llvm/CodeGen/Rematerializer.h
    M llvm/lib/CodeGen/Rematerializer.cpp
    M llvm/unittests/CodeGen/RematerializerTest.cpp

  Log Message:
  -----------
  Change rollback method to reduce tracking need


  Commit: 217d8da2d8433f80e5efda14c30d5eff9a457248
      https://github.com/llvm/llvm-project/commit/217d8da2d8433f80e5efda14c30d5eff9a457248
  Author: Lucas Ramirez <lucas.rami at proton.me>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M llvm/include/llvm/CodeGen/Rematerializer.h
    M llvm/lib/CodeGen/Rematerializer.cpp
    M llvm/unittests/CodeGen/RematerializerTest.cpp

  Log Message:
  -----------
  Use a union instead of void* + static_cast for InsertBeforePos


Compare: https://github.com/llvm/llvm-project/compare/d6b5e8f71674...217d8da2d843

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