[all-commits] [llvm/llvm-project] b217a7: [unittests/CodeGen] Remove unique_ptr from the res...

[weiguozhi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b217a78720f10ed739c39a2d74a54ef492a4cd29
      https://github.com/llvm/llvm-project/commit/b217a78720f10ed739c39a2d74a54ef492a4cd29
  Author: Guozhi Wei <carrot at google.com>
  Date:   2022-08-16 (Tue, 16 Aug 2022)

  Changed paths:
    M llvm/unittests/CodeGen/MFCommon.inc
    M llvm/unittests/CodeGen/MachineOperandTest.cpp

  Log Message:
  -----------
  [unittests/CodeGen] Remove unique_ptr from the result of createTargetMachine

The object contained in unique_ptr will be automatically deleted at the end of
the current scope. In createMachineFunction,

  auto TM = createTargetMachine();

creates a TM contained in unique_ptr, a reference of the TM is stored in a
MachineFunction object, but at the end of the function, the TM is deleted, so
later access to the TM(and contained STI, TRI ...) through MachineFunction
object is invalid.

So we should not use unique_ptr<BogusTargetMachine> in functions
createMachineFunction and createTargetMachine.

Differential Revision: https://reviews.llvm.org/D131790