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Add a header for table-gen generated pass for MHLO and use it in SinkConstantsToControlFlowPass 

A non globally registered pass should define `getName()` in order to generate correct crash reproducers.
This is something we get "for free" when using the TableGen generated base class.
We should also migrate the other passes to the same mechanism and remove the static
global registration.

PiperOrigin-RevId: 332976907
This commit is contained in:
Mehdi Amini 2020-09-21 18:01:00 -07:00 committed by TensorFlow MLIR Team
parent 0bb017098a
commit 7abd557a61
3 changed files with 34 additions and 2 deletions
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30
include/mlir-hlo/Dialect/mhlo/transforms/PassDetail.h Normal file
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@ -0,0 +1,30 @@
/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#ifndef TENSORFLOW_COMPILER_MLIR_HLO_INCLUDE_MLIR_HLO_DIALECT_MHLO_TRANSFORMS_PASSDETAIL_H_
#define TENSORFLOW_COMPILER_MLIR_HLO_INCLUDE_MLIR_HLO_DIALECT_MHLO_TRANSFORMS_PASSDETAIL_H_
#include "mlir/Pass/Pass.h"
namespace mlir {
namespace mhlo {
#define GEN_PASS_CLASSES
#include "mlir-hlo/Dialect/mhlo/transforms/mhlo_passes.h.inc"
} // end namespace mhlo
} // end namespace mlir
#endif // TENSORFLOW_COMPILER_MLIR_HLO_INCLUDE_MLIR_HLO_DIALECT_MHLO_TRANSFORMS_PASSDETAIL_H_

2
include/mlir-hlo/Dialect/mhlo/transforms/mhlo_passes.td
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@ -88,7 +88,7 @@ def OptimizeMhloPass : Pass<"mhlo-test-optimize", "FuncOp"> {
}
def SinkConstantsToControlFlowPass : Pass<"mhlo-sink-constants-to-control-flow", "FuncOp"> {
def SinkConstantsToControlFlowPass : FunctionPass<"mhlo-sink-constants-to-control-flow"> {
let summary = "Sink constants implicitly captured in control flow regions. This "
"is necessary to export to XLA.";
let constructor = "createSinkConstantsToControlFlowPass()";

4
lib/Dialect/mhlo/transforms/sink_constants_to_control_flow.cc
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@ -16,6 +16,7 @@ limitations under the License.
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Casting.h"
#include "mlir-hlo/Dialect/mhlo/IR/hlo_ops.h"
#include "mlir-hlo/Dialect/mhlo/transforms/PassDetail.h"
#include "mlir/Dialect/StandardOps/IR/Ops.h"
#include "mlir/IR/Operation.h"
#include "mlir/Pass/Pass.h"
@ -39,7 +40,8 @@ namespace {
// those within internally. Note that doing so is the only option in case of
// values defined outside that are BlockArguments of any of the parent region.
class SinkConstantsToControlFlowPass
: public mlir::PassWrapper<SinkConstantsToControlFlowPass, FunctionPass> {
: public SinkConstantsToControlFlowPassBase<
SinkConstantsToControlFlowPass> {
void runOnFunction() override {
getFunction().walk([](Operation* op) {
if (auto while_op = llvm::dyn_cast<WhileOp>(op)) {