[all-commits] [llvm/llvm-project] f892cc: [BranchFolding] Fix missing predecessors of landin...

[HaohaiWen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f892cc36fda6d25d4f7cbf68e95b17ba0af040b8
      https://github.com/llvm/llvm-project/commit/f892cc36fda6d25d4f7cbf68e95b17ba0af040b8
  Author: HaohaiWen <haohai.wen at intel.com>
  Date:   2024-01-11 (Thu, 11 Jan 2024)

  Changed paths:
    M llvm/lib/CodeGen/BranchFolding.cpp
    M llvm/test/CodeGen/X86/branchfolding-landingpad-cfg.mir
    A llvm/test/CodeGen/X86/windows-seh-EHa-PreserveCFG.ll

  Log Message:
  -----------
  [BranchFolding] Fix missing predecessors of landing-pad (#77608)

When removing an empty machine basic block, all of its successors should
be inherited by its fall through MBB. This keeps CFG as only have one
entry which is required by LiveDebugValues.

Reland #77441 as LiveDebugValues test.