Re-organize project structure to separate PyTorch dependencies from core project. (#2542)

This is a first step towards the structure we discussed here:
https://gist.github.com/stellaraccident/931b068aaf7fa56f34069426740ebf20

There are two primary goals:

1. Separate the core project (C++ dialects and conversions) from the
hard PyTorch dependencies. We move all such things into projects/pt1 as
a starting point since they are presently entangled with PT1-era APIs.
Additional work can be done to disentangle components from that
(specifically LTC is identified as likely ultimately living in a
`projects/ltc`).
2. Create space for native PyTorch2 Dynamo-based infra to be upstreamed
without needing to co-exist with the original TorchScript path.

Very little changes in this path with respect to build layering or
options. These can be updated in a followup without commingling
directory structure changes.

This also takes steps toward a couple of other layering enhancements:

* Removes the llvm-external-projects/torch-mlir-dialects sub-project,
collapsing it into the main tree.
* Audits and fixes up the core C++ build to account for issues found
while moving things. This is just an opportunistic pass through but
roughly ~halves the number of build actions for the project from the
high 4000's to the low 2000's.

It deviates from the discussed plan by having a `projects/` tree instead
of `compat/`. As I was thinking about it, this will better accommodate
the follow-on code movement.

Once things are roughly in place and the CI passing, followups will
focus on more in-situ fixes and cleanups.

.github/workflows/buildAndTest.yml

@@ -125,9 +125,8 @@ jobs:
           -DCMAKE_OSX_ARCHITECTURES=arm64 \
           -DLLVM_ENABLE_ASSERTIONS=ON \
           -DLLVM_ENABLE_PROJECTS=mlir \
-          -DLLVM_EXTERNAL_PROJECTS="torch-mlir;torch-mlir-dialects" \
+          -DLLVM_EXTERNAL_PROJECTS="torch-mlir" \
           -DLLVM_EXTERNAL_TORCH_MLIR_SOURCE_DIR="$GITHUB_WORKSPACE" \
-          -DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR="${GITHUB_WORKSPACE}/externals/llvm-external-projects/torch-mlir-dialects" \
           -DLLVM_TARGETS_TO_BUILD=AArch64 \
           -DLLVM_USE_HOST_TOOLS=ON \
           -DLLVM_ENABLE_ZSTD=OFF \

.gitignore

@@ -26,7 +26,7 @@ __pycache__
 bazel-*
 
 # Autogenerated files
-/python/torch_mlir/csrc/base_lazy_backend/generated
+/projects/pt1/python/torch_mlir/csrc/base_lazy_backend/generated
 
 #Docker builds
 build_oot/

CMakeLists.txt

@@ -1,3 +1,7 @@
+#-------------------------------------------------------------------------------
+# Project setup and globals
+#-------------------------------------------------------------------------------
+
 cmake_minimum_required(VERSION 3.12)
 
 if(POLICY CMP0068)
@@ -17,30 +21,30 @@ if(POLICY CMP0116)
   cmake_policy(SET CMP0116 OLD)
 endif()
 
-#-------------------------------------------------------------------------------
-# Project setup and globals
-#-------------------------------------------------------------------------------
-
 project(torch-mlir LANGUAGES CXX C)
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_CXX_STANDARD 17)
 
-macro(torch_mlir_add_llvm_external_project name identifier location)
-  message(STATUS "Adding LLVM external project ${name} (${identifier}) -> ${location}")
-  if(NOT EXISTS "${location}/CMakeLists.txt")
-    message(FATAL_ERROR "External project location ${location} is not valid")
-  endif()
-  list(APPEND LLVM_EXTERNAL_PROJECTS ${name})
-  list(REMOVE_DUPLICATES LLVM_EXTERNAL_PROJECTS)
-  set(LLVM_EXTERNAL_${identifier}_SOURCE_DIR ${location} CACHE STRING "" FORCE)
-  set(LLVM_EXTERNAL_PROJECTS ${LLVM_EXTERNAL_PROJECTS} CACHE STRING "" FORCE)
-endmacro()
+#-------------------------------------------------------------------------------
+# Project options
+#-------------------------------------------------------------------------------
+
+option(TORCH_MLIR_ENABLE_REFBACKEND "Enable reference backend" ON)
+if(TORCH_MLIR_ENABLE_REFBACKEND)
+  add_definitions(-DTORCH_MLIR_ENABLE_REFBACKEND)
+endif()
 
 option(TORCH_MLIR_ENABLE_STABLEHLO "Add stablehlo dialect" ON)
 if(TORCH_MLIR_ENABLE_STABLEHLO)
   add_definitions(-DTORCH_MLIR_ENABLE_STABLEHLO)
 endif()
 
+option(TORCH_MLIR_OUT_OF_TREE_BUILD "Specifies an out of tree build" OFF)
+
+# PT1 options.
+option(TORCH_MLIR_ENABLE_PROJECT_PT1 "Enables the PyTorch1 project under projects/pt1" OFF)
+# TODO: Rename/scope these. They use historic names for now to ease migration
+# burden.
 option(TORCH_MLIR_ENABLE_JIT_IR_IMPORTER "Enables JIT IR Importer" ON)
 option(TORCH_MLIR_ENABLE_LTC "Enables LTC backend" OFF)
 option(TORCH_MLIR_ENABLE_ONLY_MLIR_PYTHON_BINDINGS "Build Torch dialect MLIR Python bindings but neither JIT IR Importer nor LTC backend" OFF)
@@ -48,21 +52,17 @@ if(TORCH_MLIR_ENABLE_ONLY_MLIR_PYTHON_BINDINGS)
   set(TORCH_MLIR_ENABLE_JIT_IR_IMPORTER OFF)
   set(TORCH_MLIR_ENABLE_LTC OFF)
 endif()
-
-if(TORCH_MLIR_ENABLE_LTC)
-    set(ENV{TORCH_MLIR_ENABLE_LTC} 1)
-    message(STATUS "LTC Backend build is enabled")
-else()
-    set(ENV{TORCH_MLIR_ENABLE_LTC} 0)
-    message(STATUS "LTC Backend build is disabled")
+# Force enable the PT1 project if either the JIT_IR_IMPORTER or LTC is enabled.
+if(NOT TORCH_MLIR_ENABLE_PROJECT_PT1)
+  if(TORCH_MLIR_ENABLE_JIT_IR_IMPORTER OR TORCH_MLIR_ENABLE_LTC)
+    message(STATUS "Enabling projects/pt1 because features requiring it are enabled")
+    set(TORCH_MLIR_ENABLE_PROJECT_PT1 ON)
+  endif()
 endif()
 
-torch_mlir_add_llvm_external_project(
-  torch-mlir-dialects
-  TORCH_MLIR_DIALECTS
-  ${CMAKE_CURRENT_SOURCE_DIR}/externals/llvm-external-projects/torch-mlir-dialects)
-
-option(TORCH_MLIR_OUT_OF_TREE_BUILD "Specifies an out of tree build" OFF)
+#-------------------------------------------------------------------------------
+# Configure out-of-tree vs in-tree build
+#-------------------------------------------------------------------------------
 
 if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR TORCH_MLIR_OUT_OF_TREE_BUILD)
   message(STATUS "Torch-MLIR out-of-tree build.")
@@ -99,11 +99,10 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR TORCH_MLIR_OUT_OF_TREE_
 
   # Don't try to compile the python extensions at the moment. We need
   # to import lots of dependencies from AddMLIRPython to make this work.
-  set(MLIR_ENABLE_BINDINGS_PYTHON 1)
+  set(MLIR_ENABLE_BINDINGS_PYTHON ON)
 
-  set(TORCH-MLIR_BUILT_STANDALONE 1)
+  set(TORCH-MLIR_BUILT_STANDALONE ON)
   set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}")
-  add_subdirectory(externals/llvm-external-projects/torch-mlir-dialects)
 else()
   message(STATUS "Torch-MLIR in-tree build.")
   # In-tree build with LLVM_EXTERNAL_PROJECTS=torch-mlir
@@ -169,11 +168,7 @@ add_subdirectory(lib)
 add_subdirectory(tools)
 
 add_custom_target(check-torch-mlir-all)
-add_dependencies(check-torch-mlir-all
-  check-torch-mlir
-  check-torch-mlir-dialects
-  check-torch-mlir-capi
-  )
+add_dependencies(check-torch-mlir-all check-torch-mlir)
 
 if(MLIR_ENABLE_BINDINGS_PYTHON)
   # If parent projects want to configure where to place the python packages,
@@ -181,12 +176,6 @@ if(MLIR_ENABLE_BINDINGS_PYTHON)
   if(NOT TORCH_MLIR_PYTHON_PACKAGES_DIR)
     set(TORCH_MLIR_PYTHON_PACKAGES_DIR "${CMAKE_CURRENT_BINARY_DIR}/python_packages")
   endif()
-  add_dependencies(check-torch-mlir-all
-  check-torch-mlir-python
-  )
-  add_subdirectory(python)
-else()
-  add_custom_target(TorchMLIRPythonModules)
 endif()
 
 add_subdirectory(test)
@@ -237,3 +226,11 @@ if (TORCH_MLIR_ENABLE_STABLEHLO)
     EXCLUDE_FROM_ALL)
   include_directories(${CMAKE_CURRENT_SOURCE_DIR}/externals/stablehlo)
 endif()
+
+#-------------------------------------------------------------------------------
+# Sub-projects
+#-------------------------------------------------------------------------------
+
+if(TORCH_MLIR_ENABLE_PROJECT_PT1)
+  add_subdirectory(projects/pt1)
+endif()

build_tools/autogen_ltc_backend.py

@@ -29,7 +29,7 @@ if not TORCH_INCLUDE_DIR.is_dir():
     TORCH_INCLUDE_DIR = TORCH_DIR
 TORCHGEN_DIR = Path(torchgen.__path__[0]).resolve()
 TORCH_MLIR_DIR = Path(__file__).resolve().parent.parent
-
+TORCH_MLIR_PT1_DIR = TORCH_MLIR_DIR / "projects" / "pt1"
 
 def reindent(text, prefix=""):
     return indent(dedent(text), prefix)
@@ -114,12 +114,12 @@ class GenTorchMlirLTC:
         self.binary_dir = Path(binary_dir)
         assert self.binary_dir.is_dir(), f"Binary directory not found: {self.binary_dir}"
         self.source_yaml = self.binary_dir.joinpath("generated_native_functions.yaml")
-        self.backend_path = TORCH_MLIR_DIR.joinpath(
+        self.backend_path = TORCH_MLIR_PT1_DIR.joinpath(
             "python", "torch_mlir", "csrc", "base_lazy_backend"
         )
-        assert self.backend_path.is_dir()
+        assert self.backend_path.is_dir(), f"Backend path not found: {self.backend_path}"
         self.generated_path = self.binary_dir.joinpath(
-            "python", "torch_mlir", "csrc", "base_lazy_backend", "generated"
+            "projects", "pt1", "python", "torch_mlir", "csrc", "base_lazy_backend", "generated"
         )
         self.generated_path.mkdir(parents=True, exist_ok=True)
 

build_tools/build_standalone.sh

@@ -19,9 +19,8 @@ cmake -GNinja -B"$build_dir" "$llvm_project_dir/llvm" \
   -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
   -DLLVM_ENABLE_PROJECTS=mlir \
-  -DLLVM_EXTERNAL_PROJECTS="torch-mlir;torch-mlir-dialects" \
+  -DLLVM_EXTERNAL_PROJECTS="torch-mlir" \
   -DLLVM_EXTERNAL_TORCH_MLIR_SOURCE_DIR="$project_dir" \
-  -DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR="${project_dir}"/externals/llvm-external-projects/torch-mlir-dialects \
   -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
   -DLLVM_ENABLE_ASSERTIONS=ON \
   -DLLVM_TARGETS_TO_BUILD=host

build_tools/python_deploy/build_linux_packages.sh

@@ -234,9 +234,8 @@ function build_in_tree() {
       -DCMAKE_C_COMPILER_LAUNCHER=ccache \
       -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
       -DLLVM_ENABLE_PROJECTS=mlir \
-      -DLLVM_EXTERNAL_PROJECTS="torch-mlir;torch-mlir-dialects" \
+      -DLLVM_EXTERNAL_PROJECTS="torch-mlir" \
       -DLLVM_EXTERNAL_TORCH_MLIR_SOURCE_DIR="/main_checkout/torch-mlir" \
-      -DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR="/main_checkout/torch-mlir/externals/llvm-external-projects/torch-mlir-dialects" \
       -DLLVM_TARGETS_TO_BUILD=host \
       -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
       -DTORCH_MLIR_ENABLE_LTC=${enable_ltc} \
@@ -246,7 +245,7 @@ function build_in_tree() {
       -DTM_PYTORCH_INSTALL_WITHOUT_REBUILD=${TM_PYTORCH_INSTALL_WITHOUT_REBUILD} \
       -DPython3_EXECUTABLE="$(which python3)" \
       /main_checkout/torch-mlir/externals/llvm-project/llvm
-  cmake --build /main_checkout/torch-mlir/build
+  cmake --build /main_checkout/torch-mlir/build --target tools/torch-mlir/all
   ccache -s
 }
 
@@ -288,7 +287,7 @@ function test_in_tree() {
   cmake --build /main_checkout/torch-mlir/build --target check-torch-mlir-all
 
   cd /main_checkout/torch-mlir/
-  export PYTHONPATH="/main_checkout/torch-mlir/build/tools/torch-mlir/python_packages/torch_mlir"
+  export PYTHONPATH="/main_checkout/torch-mlir/build/tools/torch-mlir/python_packages/torch_mlir:/main_checkout/torch-mlir/projects/pt1"
 
   case $torch_version in
     nightly)

build_tools/python_deploy/build_windows_ci.sh

@@ -11,9 +11,8 @@ cmake -GNinja -Bbuild \
   -DLLVM_TARGETS_TO_BUILD=host \
   -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
   -DPython3_FIND_VIRTUALENV=ONLY \
-  -DLLVM_EXTERNAL_PROJECTS="torch-mlir;torch-mlir-dialects" \
+  -DLLVM_EXTERNAL_PROJECTS="torch-mlir" \
   -DLLVM_EXTERNAL_TORCH_MLIR_SOURCE_DIR="$PWD" \
-  -DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR="$PWD/externals/llvm-external-projects/torch-mlir-dialects" \
   -DPython3_EXECUTABLE="$(which python)" \
   $GITHUB_WORKSPACE/externals/llvm-project/llvm
 

docs/development.md

@@ -35,9 +35,8 @@ cmake -GNinja -Bbuild \
   -DCMAKE_BUILD_TYPE=Release \
   -DPython3_FIND_VIRTUALENV=ONLY \
   -DLLVM_ENABLE_PROJECTS=mlir \
-  -DLLVM_EXTERNAL_PROJECTS="torch-mlir;torch-mlir-dialects" \
+  -DLLVM_EXTERNAL_PROJECTS="torch-mlir" \
   -DLLVM_EXTERNAL_TORCH_MLIR_SOURCE_DIR="$PWD" \
-  -DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR="$PWD"/externals/llvm-external-projects/torch-mlir-dialects \
   -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
   -DLLVM_TARGETS_TO_BUILD=host \
   externals/llvm-project/llvm
@@ -360,6 +359,7 @@ Torch-MLIR has two types of tests:
 Alternatively, you can run the tests via Python directly:
 
 ```shell
+cd projects/pt1
 python -m e2e_testing.main -f 'AtenEmbeddingBag'
 ```
 
@@ -374,7 +374,7 @@ ninja check-torch-mlir-all
 This can be broken down into
 
 ```
-ninja check-torch-mlir check-torch-mlir-dialects check-torch-mlir-python
+ninja check-torch-mlir check-torch-mlir-python
 ```
 
 To run more fine-grained tests, you can do, for `check-torch-mlir`:

externals/llvm-external-projects/torch-mlir-dialects/CMakeLists.txt

@@ -1,64 +0,0 @@
-if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-  # The cmake configuration to build torch-mlir-dialects as
-  # an out-of-tree project has not been implemented. It can
-  # be built as part of LLVM or as a subdirectory of torch-mlir.
-  message(FATAL_ERROR
-    "This project is intended to be built as part of LLVM via "
-    "-DLLVM_EXTERNAL_PROJECTS=torch-mlir-dialects "
-    "-DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR}")
-endif()
-
-option(MLIR_ENABLE_BINDINGS_PYTHON "Enables MLIR Python Bindings" OFF)
-
-set(TORCH_MLIR_DIALECTS_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
-set(TORCH_MLIR_DIALECTS_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
-message(STATUS "Building torch-mlir-dialects project at ${TORCH_MLIR_DIALECTS_SOURCE_DIR} (into ${TORCH_MLIR_DIALECTS_BINARY_DIR})")
-
-if(MLIR_FOUND)
-  message(STATUS "LLVM and MLIR packages have already been configured.")
-else()
-  message(STATUS "torch-mlir-dialect is being built in-tree")
-  # An in-tree build, LLVM hasn't been installed yet.
-  # We compute these properties manually, they're otherwise
-  # contributed by find_package(MLIR...)
-  set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/../mlir)
-  set(MLIR_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/../mlir/include)
-  set(MLIR_GENERATED_INCLUDE_DIR ${LLVM_BINARY_DIR}/tools/mlir/include)
-  set(MLIR_INCLUDE_DIRS ${MLIR_INCLUDE_DIR} ${MLIR_GENERATED_INCLUDE_DIR})
-  set(LLVM_INCLUDE_DIRS ${LLVM_MAIN_INCLUDE_DIR})
-
-  # Configure CMake and tablegen.
-  list(APPEND CMAKE_MODULE_PATH ${MLIR_MAIN_SRC_DIR}/cmake/modules)
-  list(APPEND CMAKE_MODULE_PATH ${LLVM_MAIN_SRC_DIR}/cmake)
-
-  include(TableGen)
-  include(AddLLVM)
-  include(AddMLIR)
-endif()
-
-function(torch_mlir_dialects_target_includes target)
-  set(_dirs
-    $<BUILD_INTERFACE:${MLIR_INCLUDE_DIRS}>
-    $<BUILD_INTERFACE:${TORCH_MLIR_DIALECTS_SOURCE_DIR}/include>
-    $<BUILD_INTERFACE:${TORCH_MLIR_DIALECTS_BINARY_DIR}/include>
-  )
-  # In LLVM parlance, the actual target may just be an interface and may not
-  # be responsible for actually compiling anything. The corresponding obj.
-  # target, when present, is just used for compilation and does not
-  # contribute to the interface properties.
-  # TODO: Normalize this upstream.
-  target_include_directories(${target} PUBLIC "${_dirs}") 
-  if(TARGET obj.${target})
-    target_include_directories(obj.${target} PRIVATE "${_dirs}")
-  endif()
-endfunction()
-
-# TODO: Needed for tablegen. Remove.
-include_directories(SYSTEM ${MLIR_INCLUDE_DIRS})
-include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
-include_directories(SYSTEM ${TORCH_MLIR_DIALECTS_SOURCE_DIR}/include)
-
-add_subdirectory(include)
-add_subdirectory(lib)
-add_subdirectory(tools)
-add_subdirectory(test)

externals/llvm-external-projects/torch-mlir-dialects/README.md

@@ -1,11 +0,0 @@
-# Torch-MLIR Dialects Project
-
-Sources for torch-mlir's public dialects (containing ops/types/attributes that
-are unique to Torch-MLIR at the moment)
-
-This project is intended to be used via LLVM's external projects setup:
-
-* `-DLLVM_EXTERNAL_PROJECTS=torch-mlir-dialects`
-* `-DLLVM_EXTERNAL_TORCH_MLIR_DIALECTS_SOURCE_DIR={this_directory}`
-
-It depends on the `mlir` project.

externals/llvm-external-projects/torch-mlir-dialects/include/CMakeLists.txt

@@ -1 +0,0 @@
-add_subdirectory(torch-mlir-dialects)

externals/llvm-external-projects/torch-mlir-dialects/lib/CMakeLists.txt

@@ -1 +0,0 @@
-add_subdirectory(Dialect)

externals/llvm-external-projects/torch-mlir-dialects/lib/Dialect/CMakeLists.txt

@@ -1 +0,0 @@
-add_subdirectory(TMTensor)

externals/llvm-external-projects/torch-mlir-dialects/test/CMakeLists.txt

@@ -1,21 +0,0 @@
-# lit needs to find the tools, and the location differs for in-tree and out-of-tree builds.
-get_target_property(TORCH_MLIR_DIALECTS_TOOLS_DIR torch-mlir-dialects-opt RUNTIME_OUTPUT_DIRECTORY)
-configure_lit_site_cfg(
-        ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in
-        ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg.py
-        MAIN_CONFIG
-        ${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py
-)
-
-set(TORCH_MLIR_DIALECTS_TEST_DEPENDS
-        FileCheck count not
-        torch-mlir-dialects-opt
-        )
-
-add_lit_testsuite(check-torch-mlir-dialects "Running the torch-mlir-dialects regression tests"
-        ${CMAKE_CURRENT_BINARY_DIR}
-        DEPENDS ${TORCH_MLIR_DIALECTS_TEST_DEPENDS}
-        )
-set_target_properties(check-torch-mlir-dialects PROPERTIES FOLDER "Tests")
-
-add_lit_testsuites(TORCH_MLIR_DIALECTS ${CMAKE_CURRENT_SOURCE_DIR} DEPENDS ${TORCH_MLIR_DIALECTS_TEST_DEPENDS})

externals/llvm-external-projects/torch-mlir-dialects/test/lit.site.cfg.py.in

@@ -1,27 +0,0 @@
-# -*- Python -*-
-# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-# See https://llvm.org/LICENSE.txt for license information.
-# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-# Also available under a BSD-style license. See LICENSE.
-
-@LIT_SITE_CFG_IN_HEADER@
-
-import sys
-
-config.torch_mlir_dialects_obj_root = "@TORCH_MLIR_DIALECTS_BINARY_DIR@"
-config.torch_mlir_dialects_tools_dir = "@TORCH_MLIR_DIALECTS_TOOLS_DIR@"
-config.llvm_src_root = "@LLVM_SOURCE_DIR@"
-config.llvm_obj_root = "@LLVM_BINARY_DIR@"
-config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
-config.llvm_lib_dir = "@LLVM_LIBS_DIR@"
-config.llvm_shlib_dir = "@SHLIBDIR@"
-config.llvm_shlib_ext = "@SHLIBEXT@"
-config.llvm_exe_ext = "@EXEEXT@"
-config.lit_tools_dir = "@LLVM_LIT_TOOLS_DIR@"
-config.python_executable = sys.executable
-
-import lit.llvm
-lit.llvm.initialize(lit_config, config)
-
-# Let the main config do the real work.
-lit_config.load_config(config, "@TORCH_MLIR_DIALECTS_SOURCE_DIR@/test/lit.cfg.py")

externals/llvm-external-projects/torch-mlir-dialects/tools/CMakeLists.txt

@@ -1 +0,0 @@
-add_subdirectory(torch-mlir-dialects-opt)

externals/llvm-external-projects/torch-mlir-dialects/tools/torch-mlir-dialects-opt/CMakeLists.txt

@@ -1,22 +0,0 @@
-set(LIBS
-  MLIRArithDialect
-  MLIRDialect
-  MLIRLinalgDialect
-  MLIRMemRefDialect
-  MLIROptLib
-  MLIRSCFDialect
-  MLIRSCFTransforms
-  MLIRFuncDialect
-  MLIRTensorDialect
-  MLIRTransforms
-  TorchMLIRTMTensorDialect
-  TorchMLIRTMTensorPasses
-)
-
-add_llvm_tool(torch-mlir-dialects-opt
-  torch-mlir-dialects-opt.cpp
-
-  DEPENDS
-  ${LIBS}
-)
-target_link_libraries(torch-mlir-dialects-opt PRIVATE ${LIBS})

externals/llvm-external-projects/torch-mlir-dialects/tools/torch-mlir-dialects-opt/torch-mlir-dialects-opt.cpp

@@ -1,48 +0,0 @@
-//===------------------------------------------------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-// Also available under a BSD-style license. See LICENSE.
-//
-//===----------------------------------------------------------------------===//
-
-#include "mlir/Dialect/Arith/IR/Arith.h"
-#include "mlir/Dialect/Func/IR/FuncOps.h"
-#include "mlir/Dialect/Linalg/IR/Linalg.h"
-#include "mlir/Dialect/MemRef/IR/MemRef.h"
-#include "mlir/Dialect/SCF/IR/SCF.h"
-#include "mlir/Dialect/SCF/Transforms/Passes.h"
-#include "mlir/Dialect/Tensor/IR/Tensor.h"
-#include "mlir/IR/AsmState.h"
-#include "mlir/IR/Dialect.h"
-#include "mlir/Tools/mlir-opt/MlirOptMain.h"
-#include "mlir/Transforms/Passes.h"
-#include "torch-mlir-dialects/Dialect/TMTensor/IR/ScalarLoopOpInterface.h"
-#include "torch-mlir-dialects/Dialect/TMTensor/IR/TMTensorDialect.h"
-#include "torch-mlir-dialects/Dialect/TMTensor/Transforms/Passes.h"
-
-using namespace mlir;
-
-int main(int argc, char **argv) {
-  registerAsmPrinterCLOptions();
-  registerMLIRContextCLOptions();
-
-  registerTransformsPasses();
-  registerSCFPasses();
-
-  // Local dialects.
-  mlir::torch::TMTensor::registerPasses();
-
-  DialectRegistry registry;
-  registry.insert<
-      // Local dialects
-      mlir::torch::TMTensor::TMTensorDialect,
-      // Upstream dialects
-      mlir::arith::ArithDialect, mlir::linalg::LinalgDialect,
-      mlir::func::FuncDialect, mlir::memref::MemRefDialect,
-      mlir::scf::SCFDialect, mlir::tensor::TensorDialect>();
-
-  return mlir::asMainReturnCode(mlir::MlirOptMain(
-      argc, argv, "MLIR modular optimizer driver\n", registry));
-}

include/CMakeLists.txt

@@ -1 +1,2 @@
 add_subdirectory(torch-mlir)
+add_subdirectory(torch-mlir-dialects)

include/torch-mlir/InitAll.h

@@ -15,7 +15,13 @@
 namespace mlir {
 namespace torch {
 
+// Registers all dialects that this project produces and any dependencies.
 void registerAllDialects(mlir::DialectRegistry &registry);
+
+// Registers dialects that may be needed to parse torch-mlir inputs and
+// test cases.
+void registerOptionalInputDialects(mlir::DialectRegistry &registry);
+
 void registerAllPasses();
 
 } // namespace torch

lib/CAPI/CMakeLists.txt

@@ -9,8 +9,6 @@ add_mlir_public_c_api_library(TorchMLIRCAPI
   ${PROJECT_SOURCE_DIR}/include/torch-mlir-c/
 
   ENABLE_AGGREGATION
-  LINK_COMPONENTS
-  Core
 
   LINK_LIBS PUBLIC
   MLIRIR

lib/CMakeLists.txt

@@ -1,14 +1,18 @@
 add_subdirectory(CAPI)
 add_subdirectory(Conversion)
 add_subdirectory(Dialect)
-add_subdirectory(RefBackend)
 
-get_property(extension_libs GLOBAL PROPERTY MLIR_EXTENSION_LIBS)
 set(LinkedLibs
+  MLIRComplexDialect
   MLIRFuncDialect
+  MLIRFuncInlinerExtension
   MLIRIR
+  MLIRMLProgramDialect
+  MLIRMemRefDialect
+  MLIRSCFDialect
+  MLIRTensorDialect
+  MLIRTosaDialect
   MLIRSupport
-  ${extension_libs}
 
   TorchMLIRTorchPasses
   TorchMLIRTorchConversionDialect
@@ -20,15 +24,16 @@ set(LinkedLibs
   TorchMLIRTMTensorDialect
 
   TorchMLIRConversionPasses
-  TorchMLIRRefBackend
 )
 
+if(TORCH_MLIR_ENABLE_REFBACKEND)
+  add_subdirectory(RefBackend)
+  list(APPEND LinkedLibs TorchMLIRRefBackend)
+endif()
+
 add_mlir_library(TorchMLIRInitAll
   InitAll.cpp
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   ${LinkedLibs}
 )

lib/Conversion/CMakeLists.txt

@@ -27,10 +27,6 @@ add_mlir_library(TorchMLIRConversionPasses
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   ${linked_libs}
-  #${torch_mlir_conversion_libs}
 )

lib/Conversion/TorchConversionToMLProgram/CMakeLists.txt

@@ -7,9 +7,6 @@ add_mlir_conversion_library(TorchMLIRTorchConversionToMLProgram
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRLinalgDialect

lib/Conversion/TorchToArith/CMakeLists.txt

@@ -7,9 +7,6 @@ add_mlir_conversion_library(TorchMLIRTorchToArith
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Conversion/TorchToLinalg/CMakeLists.txt

@@ -17,9 +17,6 @@ add_mlir_conversion_library(TorchMLIRTorchToLinalg
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Conversion/TorchToSCF/CMakeLists.txt

@@ -7,9 +7,6 @@ add_mlir_conversion_library(TorchMLIRTorchToSCF
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Conversion/TorchToStablehlo/CMakeLists.txt

@@ -14,9 +14,6 @@ add_mlir_conversion_library(TorchMLIRTorchToStablehlo
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Conversion/TorchToTMTensor/CMakeLists.txt

@@ -7,9 +7,6 @@ TorchToTMTensor.cpp
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Conversion/TorchToTosa/CMakeLists.txt

@@ -9,9 +9,6 @@ add_mlir_conversion_library(TorchMLIRTorchToTosa
   DEPENDS
   TorchMLIRConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Dialect/CMakeLists.txt

@@ -1,2 +1,3 @@
+add_subdirectory(TMTensor)
 add_subdirectory(Torch)
 add_subdirectory(TorchConversion)

lib/Dialect/TMTensor/IR/CMakeLists.txt

@@ -26,4 +26,4 @@ add_mlir_library(TorchMLIRTMTensorDialect
   MLIRViewLikeInterface
 )
 
-torch_mlir_dialects_target_includes(TorchMLIRTMTensorDialect)
+torch_mlir_target_includes(TorchMLIRTMTensorDialect)

lib/Dialect/TMTensor/Transforms/CMakeLists.txt

@@ -21,3 +21,5 @@ add_mlir_library(TorchMLIRTMTensorPasses
   MLIRTensorDialect
   MLIRTransforms
 )
+
+torch_mlir_target_includes(TorchMLIRTMTensorPasses)

lib/Dialect/Torch/IR/CMakeLists.txt

@@ -12,9 +12,6 @@ add_mlir_library(TorchMLIRTorchDialect
   MLIRTorchOpsIncGen
   MLIRTorchTypesIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRBytecodeOpInterface
   MLIRBytecodeReader

lib/Dialect/Torch/Transforms/CMakeLists.txt

@@ -26,9 +26,6 @@ add_mlir_library(TorchMLIRTorchPasses
   DEPENDS
   TorchMLIRTorchPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRPass

lib/Dialect/TorchConversion/IR/CMakeLists.txt

@@ -9,9 +9,6 @@ add_mlir_dialect_library(TorchMLIRTorchConversionDialect
   MLIRTorchConversionOpsIncGen
   MLIRTorchTypesIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   MLIRIR
   MLIRSupport

lib/Dialect/TorchConversion/Transforms/CMakeLists.txt

@@ -39,9 +39,6 @@ add_mlir_library(TorchMLIRTorchConversionPasses
   DEPENDS
   TorchMLIRTorchConversionPassIncGen
 
-  LINK_COMPONENTS
-  Core
-
   LINK_LIBS PUBLIC
   ${LinkedLibs}
 )

lib/InitAll.cpp

@@ -9,8 +9,15 @@
 
 #include "torch-mlir/InitAll.h"
 
+#include "mlir/Dialect/Complex/IR/Complex.h"
 #include "mlir/Dialect/Func/Extensions/InlinerExtension.h"
 #include "mlir/Dialect/Func/IR/FuncOps.h"
+#include "mlir/Dialect/Linalg/IR/Linalg.h"
+#include "mlir/Dialect/MLProgram/IR/MLProgram.h"
+#include "mlir/Dialect/MemRef/IR/MemRef.h"
+#include "mlir/Dialect/SCF/IR/SCF.h"
+#include "mlir/Dialect/Tensor/IR/Tensor.h"
+#include "mlir/Dialect/Tosa/IR/TosaOps.h"
 #include "mlir/IR/Dialect.h"
 #include "torch-mlir-dialects/Dialect/TMTensor/IR/TMTensorDialect.h"
 #include "torch-mlir-dialects/Dialect/TMTensor/Transforms/Passes.h"
@@ -29,11 +36,22 @@ void mlir::torch::registerAllDialects(mlir::DialectRegistry &registry) {
   mlir::func::registerInlinerExtension(registry);
 }
 
+// TODO: Break this up when backends are separated.
+void mlir::torch::registerOptionalInputDialects(
+    mlir::DialectRegistry &registry) {
+  registry.insert<complex::ComplexDialect, linalg::LinalgDialect,
+                  memref::MemRefDialect, ml_program::MLProgramDialect,
+                  scf::SCFDialect, tensor::TensorDialect, tosa::TosaDialect>();
+}
+
 void mlir::torch::registerAllPasses() {
   mlir::torch::registerTorchPasses();
   mlir::torch::registerTorchConversionPasses();
 
   mlir::torch::registerConversionPasses();
-  mlir::torch::RefBackend::registerRefBackendPasses();
   mlir::torch::TMTensor::registerPasses();
+
+#ifdef TORCH_MLIR_ENABLE_REFBACKEND
+  mlir::torch::RefBackend::registerRefBackendPasses();
+#endif
 }

projects/pt1/CMakeLists.txt

@@ -0,0 +1,27 @@
+message(STATUS "Building PyTorch1 compatibility project")
+
+if(TORCH_MLIR_ENABLE_LTC)
+    set(ENV{TORCH_MLIR_ENABLE_LTC} 1)
+    message(STATUS "LTC Backend build is enabled")
+else()
+    set(ENV{TORCH_MLIR_ENABLE_LTC} 0)
+    message(STATUS "LTC Backend build is disabled")
+endif()
+
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/python/torch_mlir/cmake/modules")
+
+################################################################################
+# Setup python.
+################################################################################
+
+if(MLIR_ENABLE_BINDINGS_PYTHON)
+  add_dependencies(check-torch-mlir-all
+    check-torch-mlir-pt1
+  )
+  add_subdirectory(python)
+else()
+  add_custom_target(TorchMLIRPythonModules)
+endif()
+
+add_subdirectory(test)

projects/pt1/python/CMakeLists.txt

@@ -29,7 +29,7 @@ if (NOT TORCH_MLIR_USE_INSTALLED_PYTORCH)
   set(ENV{CMAKE_C_COMPILER_LAUNCHER} ${CMAKE_C_COMPILER_LAUNCHER})
   set(ENV{CMAKE_CXX_COMPILER_LAUNCHER} ${CMAKE_CXX_COMPILER_LAUNCHER})
   execute_process(
-          COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/../build_tools/build_libtorch.sh
+          COMMAND ${TORCH_MLIR_SOURCE_DIR}/build_tools/build_libtorch.sh
           RESULT_VARIABLE _result
   )
   if(_result)