[all-commits] [llvm/llvm-project] 85185b: First pass on MLIR python context lifetime managem...

[Stella Laurenzo via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 85185b61b6371c29111611b8e3ac8d06403542c8
      https://github.com/llvm/llvm-project/commit/85185b61b6371c29111611b8e3ac8d06403542c8
  Author: Stella Laurenzo <stellaraccident at gmail.com>
  Date:   2020-09-18 (Fri, 18 Sep 2020)

  Changed paths:
    M mlir/include/mlir-c/IR.h
    M mlir/lib/Bindings/Python/IRModules.cpp
    M mlir/lib/Bindings/Python/IRModules.h
    M mlir/lib/CAPI/IR/IR.cpp
    A mlir/test/Bindings/Python/context_lifecycle.py

  Log Message:
  -----------
  First pass on MLIR python context lifetime management.

* Per thread https://llvm.discourse.group/t/revisiting-ownership-and-lifetime-in-the-python-bindings/1769
* Reworks contexts so it is always possible to get back to a py::object that holds the reference count for an arbitrary MlirContext.
* Retrofits some of the base classes to automatically take a reference to the context, elimintating keep_alives.
* More needs to be done, as discussed, when moving on to the operations/blocks/regions.

Differential Revision: https://reviews.llvm.org/D87886