[all-commits] [llvm/llvm-project] c9b7d2: [CFI/MergeFunctions] Modify MergeFunctions to prop...

[Oskar Wirga via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c9b7d21dc577b10dce2b8d67b86b279cfc374d40
      https://github.com/llvm/llvm-project/commit/c9b7d21dc577b10dce2b8d67b86b279cfc374d40
  Author: Oskar Wirga <10386631+oskarwirga at users.noreply.github.com>
  Date:   2023-10-18 (Wed, 18 Oct 2023)

  Changed paths:
    M llvm/lib/Transforms/IPO/MergeFunctions.cpp
    A llvm/test/Transforms/MergeFunc/cfi-thunk-merging.ll

  Log Message:
  -----------
  [CFI/MergeFunctions] Modify MergeFunctions to propagate type information (#68628)

When MergeFuncs creates a thunk, it does not modify the function in
place, but creates a new one altogether. If type metadata is not
properly forwarded to this new function, LowerTypeTests will be unable
to put this thunk into the dispatch table.

The fix here is to just forward the type metadata to the newly created
functions.