76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
//===- QuantOps.cpp - Quantization Type and Ops Implementation --*- C++ -*-===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =============================================================================
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#include "mlir/Dialect/QuantOps/QuantOps.h"
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#include "TypeDetail.h"
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#include "mlir/Dialect/QuantOps/QuantTypes.h"
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#include "mlir/IR/MLIRContext.h"
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#include "mlir/IR/Matchers.h"
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#include "mlir/IR/PatternMatch.h"
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#include "mlir/IR/StandardTypes.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/MathExtras.h"
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using namespace mlir;
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using namespace mlir::quant;
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using namespace mlir::quant::detail;
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#define GET_OP_CLASSES
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#include "mlir/Dialect/QuantOps/QuantOps.cpp.inc"
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namespace {
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/// Matches x -> [scast -> scast] -> y, replacing the second scast with the
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/// value of x if the casts invert each other.
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class RemoveRedundantStorageCastsRewrite
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: public OpRewritePattern<StorageCastOp> {
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public:
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using OpRewritePattern<StorageCastOp>::OpRewritePattern;
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PatternMatchResult matchAndRewrite(StorageCastOp op,
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PatternRewriter &rewriter) const override {
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if (!matchPattern(op.arg(), m_Op<StorageCastOp>()))
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return matchFailure();
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auto srcScastOp = cast<StorageCastOp>(op.arg()->getDefiningOp());
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if (srcScastOp.arg()->getType() != op.getType())
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return matchFailure();
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rewriter.replaceOp(op, srcScastOp.arg());
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return matchSuccess();
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}
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};
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} // end anonymous namespace
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void StorageCastOp::getCanonicalizationPatterns(
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OwningRewritePatternList &patterns, MLIRContext *context) {
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patterns.push_back(
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llvm::make_unique<RemoveRedundantStorageCastsRewrite>(context));
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}
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QuantizationDialect::QuantizationDialect(MLIRContext *context)
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: Dialect(/*name=*/"quant", context) {
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addTypes<AnyQuantizedType, UniformQuantizedType,
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UniformQuantizedPerAxisType>();
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addOperations<
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#define GET_OP_LIST
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#include "mlir/Dialect/QuantOps/QuantOps.cpp.inc"
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>();
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}
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