[all-commits] [llvm/llvm-project] ddd95b: [RemoveDIs] Handle DPValues in hoistCommonCodeFrom...

[Orlando Cazalet-Hyams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ddd95b15d102331ecb7ce94dcf3a7280e0a133fa
      https://github.com/llvm/llvm-project/commit/ddd95b15d102331ecb7ce94dcf3a7280e0a133fa
  Author: Orlando Cazalet-Hyams <orlando.hyams at sony.com>
  Date:   2024-02-05 (Mon, 05 Feb 2024)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp
    M llvm/test/Transforms/SimplifyCFG/X86/pr39187-g.ll
    M llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue-inlined.ll
    M llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll

  Log Message:
  -----------
  [RemoveDIs] Handle DPValues in hoistCommonCodeFromSuccessors (#79476)

Hoist DPValues attached to each instruction being considered for hoisting if
they are identical in lock-step. This includes the final instructions which
are considered but not hoisted, because the corresponding dbg.values would
appear before those instruction and thus hoisted if identical.

Identical debug records hoisted:
llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll

Non-identical debug records not hoisted:
llvm/test/Transforms/SimplifyCFG/X86/pr39187-g.ll

Debug records attached to first not-hoisted instructions are hoisted:
llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue-inlined.ll