[all-commits] [llvm/llvm-project] dfc5a9: [Instruction] Add dropLocation and updateLocationA...

[Vedant Kumar via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: dfc5a9eb57aaaac972764bf731503419284bd3dc
      https://github.com/llvm/llvm-project/commit/dfc5a9eb57aaaac972764bf731503419284bd3dc
  Author: Vedant Kumar <vsk at apple.com>
  Date:   2020-09-24 (Thu, 24 Sep 2020)

  Changed paths:
    M llvm/include/llvm/IR/Instruction.h
    M llvm/lib/IR/DebugInfo.cpp
    M llvm/lib/Transforms/Scalar/GVN.cpp
    M llvm/lib/Transforms/Scalar/LICM.cpp
    M llvm/test/DebugInfo/Generic/licm-hoist-debug-loc.ll
    M llvm/test/Transforms/GVN/PRE/phi-translate.ll
    M llvm/test/Transforms/LICM/hoisting-preheader-debugloc.ll
    M llvm/unittests/IR/InstructionsTest.cpp

  Log Message:
  -----------
  [Instruction] Add dropLocation and updateLocationAfterHoist helpers

Introduce a helper which can be used to update the debug location of an
Instruction after the instruction is hoisted. This can be used to safely
drop a source location as recommended by the docs.

For more context, see the discussion in https://reviews.llvm.org/D60913.

Differential Revision: https://reviews.llvm.org/D85670