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//===- QuantOps.cpp - Quantization Type and Ops Implementation --*- C++ -*-===//
//
// Copyright 2019 The MLIR Authors.
//
// 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.
// =============================================================================
#include "mlir/Dialect/QuantOps/QuantOps.h"
#include "TypeDetail.h"
#include "mlir/Dialect/QuantOps/QuantTypes.h"
#include "mlir/IR/MLIRContext.h"
#include "mlir/IR/Matchers.h"
#include "mlir/IR/PatternMatch.h"
#include "mlir/IR/StandardTypes.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/MathExtras.h"
using namespace mlir;
using namespace mlir::quant;
using namespace mlir::quant::detail;
#define GET_OP_CLASSES
#include "mlir/Dialect/QuantOps/QuantOps.cpp.inc"
namespace {
/// Matches x -> [scast -> scast] -> y, replacing the second scast with the
/// value of x if the casts invert each other.
class RemoveRedundantStorageCastsRewrite
: public OpRewritePattern<StorageCastOp> {
public:
using OpRewritePattern<StorageCastOp>::OpRewritePattern;
PatternMatchResult matchAndRewrite(StorageCastOp op,
PatternRewriter &rewriter) const override {
if (!matchPattern(op.arg(), m_Op<StorageCastOp>()))
return matchFailure();
auto srcScastOp = cast<StorageCastOp>(op.arg()->getDefiningOp());
if (srcScastOp.arg()->getType() != op.getType())
return matchFailure();
rewriter.replaceOp(op, srcScastOp.arg());
return matchSuccess();
}
};
} // end anonymous namespace
void StorageCastOp::getCanonicalizationPatterns(
OwningRewritePatternList &patterns, MLIRContext *context) {
patterns.insert<RemoveRedundantStorageCastsRewrite>(context);
}
QuantizationDialect::QuantizationDialect(MLIRContext *context)
: Dialect(/*name=*/"quant", context) {
addTypes<AnyQuantizedType, UniformQuantizedType,
UniformQuantizedPerAxisType>();
addOperations<
#define GET_OP_LIST
#include "mlir/Dialect/QuantOps/QuantOps.cpp.inc"
>();
}
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