[all-commits] [llvm/llvm-project] 6f7e49: Add DebugSSAUpdater class to track debug value liv...

[Stephen Tozer via All-commits]

  Branch: refs/heads/users/SLTozer/debug-ssa-updater
  Home:   https://github.com/llvm/llvm-project
  Commit: 6f7e4985c8f11040f4df78417a09d3a4d79ced65
      https://github.com/llvm/llvm-project/commit/6f7e4985c8f11040f4df78417a09d3a4d79ced65
  Author: Stephen Tozer <stephen.tozer at sony.com>
  Date:   2025-04-02 (Wed, 02 Apr 2025)

  Changed paths:
    M llvm/include/llvm/IR/DebugInfoMetadata.h
    A llvm/include/llvm/Transforms/Utils/DebugSSAUpdater.h
    M llvm/lib/IR/DebugInfoMetadata.cpp
    M llvm/lib/Transforms/Utils/CMakeLists.txt
    A llvm/lib/Transforms/Utils/DebugSSAUpdater.cpp
    M llvm/unittests/Transforms/Utils/CMakeLists.txt
    A llvm/unittests/Transforms/Utils/DebugSSAUpdaterTest.cpp
    M llvm/utils/gn/secondary/llvm/lib/Transforms/Utils/BUILD.gn

  Log Message:
  -----------
  Add DebugSSAUpdater class to track debug value liveness

This patch adds a class that uses SSA construction, with debug values as
definitions, to determine whether and which debug values for a particular
variable are live at each point in an IR function. This will be used by the
IR reader of llvm-debuginfo-analyzer to compute variable ranges and
coverage, although it may be applicable to other debug info IR analyses.



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