mirror of https://github.com/llvm/torch-mlir
97 lines
4.3 KiB
C++
97 lines
4.3 KiB
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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "npcomp/Dialect/TorchConversion/Transforms/Passes.h"
|
|
#include "mlir/Dialect/Linalg/Passes.h"
|
|
#include "mlir/Dialect/MemRef/Transforms/Passes.h"
|
|
#include "mlir/Dialect/StandardOps/Transforms/Passes.h"
|
|
#include "mlir/Pass/PassManager.h"
|
|
#include "mlir/Transforms/Passes.h"
|
|
#include "npcomp/Backend/Common/Passes.h"
|
|
#include "npcomp/Conversion/TorchToIREE/TorchToIREE.h"
|
|
#include "npcomp/Conversion/TorchToLinalg/TorchToLinalg.h"
|
|
#include "npcomp/Conversion/TorchToSCF/TorchToSCF.h"
|
|
#include "npcomp/Conversion/TorchToStd/TorchToStd.h"
|
|
#include "npcomp/Dialect/Torch/Transforms/Passes.h"
|
|
|
|
using namespace mlir;
|
|
using namespace mlir::NPCOMP;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Pass registration
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace {
|
|
#define GEN_PASS_REGISTRATION
|
|
#include "npcomp/Dialect/TorchConversion/Transforms/Passes.h.inc"
|
|
} // end namespace
|
|
|
|
void mlir::NPCOMP::registerTorchConversionPasses() {
|
|
::registerPasses();
|
|
mlir::PassPipelineRegistration<Torch::TorchLoweringPipelineOptions>(
|
|
"torchscript-to-npcomp-backend-pipeline",
|
|
"Pipeline lowering torch object graph to npcomp backend format.",
|
|
mlir::NPCOMP::TorchConversion::createTorchScriptToNpcompBackendPipeline);
|
|
}
|
|
|
|
void mlir::NPCOMP::TorchConversion::createTorchScriptToNpcompBackendPipeline(
|
|
OpPassManager &pm, const Torch::TorchLoweringPipelineOptions &options) {
|
|
|
|
// Conversion to the npcomp backend contract starts from the Torch backend
|
|
// contract.
|
|
Torch::createTorchScriptToTorchBackendPipeline(pm, options);
|
|
|
|
// Annotate the ABI of the original Torch functions before we lower them and
|
|
// lose information.
|
|
pm.addPass(TorchConversion::createAnnotateABIPass());
|
|
|
|
// Check some invariants to catch errors in a clear way.
|
|
pm.addPass(
|
|
TorchConversion::createVerifyInvariantsBeforeBackendLoweringPass());
|
|
|
|
// Lower to linalg + guards which is the input to codegen backends.
|
|
// We do this first as it tends to involve pattern-matching against constants,
|
|
// (e.g. dimensions which must be constant in a ranked programming model)
|
|
// and those constants get somewhat obscured by TorchToStd.
|
|
pm.addNestedPass<FuncOp>(createConvertTorchToLinalgPass());
|
|
pm.addNestedPass<FuncOp>(createConvertTorchToStdPass());
|
|
pm.addNestedPass<FuncOp>(createConvertTorchToSCFPass());
|
|
// Lists and other concepts that don't exist in upstream go through the IREE
|
|
// dialect, which we treat as an reasonably well designed interim placeholder
|
|
// for the set of ops that we think makes sense in the npcomp backend
|
|
// contract. We expect to co-evolve this dialect with npcomp needs, as a lot
|
|
// of what we are doing here in npcomp is breaking new ground w.r.t.
|
|
// expressiveness and program generality for tensor compilers.
|
|
//
|
|
// We lower lists last because the lowered form is much harder to reason about
|
|
// than the original form.
|
|
pm.addNestedPass<FuncOp>(createConvertTorchToIREEPass());
|
|
pm.addNestedPass<FuncOp>(createStdExpandOpsPass());
|
|
|
|
if (options.optimize) {
|
|
// Clean up any non-canonical code introduced above..
|
|
pm.addNestedPass<FuncOp>(createCanonicalizerPass());
|
|
// Resolve `dim` ops on tensors (which currently live in the `memref`
|
|
// dialect for some reason -- we don't have memrefs at this level).
|
|
pm.addNestedPass<FuncOp>(memref::createResolveShapedTypeResultDimsPass());
|
|
// The resolution of `dim` ops tends to create identical ops. CSE them.
|
|
pm.addNestedPass<FuncOp>(createCSEPass());
|
|
}
|
|
|
|
// Finish the type conversion from `torch` types to the types of the npcomp
|
|
// backend contract.
|
|
pm.addPass(TorchConversion::createFuncBackendTypeConversionPass());
|
|
pm.addNestedPass<FuncOp>(
|
|
TorchConversion::createFinalizingBackendTypeConversionPass());
|
|
|
|
// Verify that we have lowered to the form that npcomp backends expect.
|
|
// This fails compilation (signalPassFailure) if the IR is not in the
|
|
// correct form.
|
|
pm.addPass(CommonBackend::createVerifyBackendContractPass());
|
|
}
|