4dd5f79f07
This enables partial bufferization that includes function signatures. To test this, this change also makes the func-bufferize partial and adds a dedicated finalizing-bufferize pass. Differential Revision: https://reviews.llvm.org/D92032
111 lines
4.2 KiB
C++
111 lines
4.2 KiB
C++
//===- FuncConversions.cpp - Standard Function conversions ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/StandardOps/Transforms/FuncConversions.h"
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#include "mlir/Dialect/StandardOps/IR/Ops.h"
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#include "mlir/Transforms/DialectConversion.h"
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using namespace mlir;
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namespace {
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/// Converts the operand and result types of the Standard's CallOp, used
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/// together with the FuncOpSignatureConversion.
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struct CallOpSignatureConversion : public OpConversionPattern<CallOp> {
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using OpConversionPattern<CallOp>::OpConversionPattern;
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/// Hook for derived classes to implement combined matching and rewriting.
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LogicalResult
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matchAndRewrite(CallOp callOp, ArrayRef<Value> operands,
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ConversionPatternRewriter &rewriter) const override {
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// Convert the original function results.
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SmallVector<Type, 1> convertedResults;
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if (failed(typeConverter->convertTypes(callOp.getResultTypes(),
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convertedResults)))
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return failure();
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// Substitute with the new result types from the corresponding FuncType
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// conversion.
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rewriter.replaceOpWithNewOp<CallOp>(callOp, callOp.callee(),
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convertedResults, operands);
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return success();
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}
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};
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} // end anonymous namespace
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void mlir::populateCallOpTypeConversionPattern(
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OwningRewritePatternList &patterns, MLIRContext *ctx,
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TypeConverter &converter) {
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patterns.insert<CallOpSignatureConversion>(converter, ctx);
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}
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namespace {
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/// Only needed to support partial conversion of functions where this pattern
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/// ensures that the branch operation arguments matches up with the succesor
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/// block arguments.
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class BranchOpInterfaceTypeConversion : public ConversionPattern {
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public:
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BranchOpInterfaceTypeConversion(TypeConverter &typeConverter,
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MLIRContext *ctx)
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: ConversionPattern(/*benefit=*/1, typeConverter, MatchAnyOpTypeTag()) {}
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LogicalResult
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matchAndRewrite(Operation *op, ArrayRef<Value> operands,
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ConversionPatternRewriter &rewriter) const final {
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auto branchOp = dyn_cast<BranchOpInterface>(op);
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if (!branchOp)
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return failure();
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// For a branch operation, only some operands go to the target blocks, so
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// only rewrite those.
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SmallVector<Value, 4> newOperands(op->operand_begin(), op->operand_end());
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for (int succIdx = 0, succEnd = op->getBlock()->getNumSuccessors();
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succIdx < succEnd; ++succIdx) {
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auto successorOperands = branchOp.getSuccessorOperands(succIdx);
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if (!successorOperands)
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continue;
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for (int idx = successorOperands->getBeginOperandIndex(),
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eidx = idx + successorOperands->size();
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idx < eidx; ++idx) {
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newOperands[idx] = operands[idx];
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}
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}
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rewriter.updateRootInPlace(
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op, [newOperands, op]() { op->setOperands(newOperands); });
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return success();
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}
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};
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} // end anonymous namespace
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namespace {
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/// Only needed to support partial conversion of functions where this pattern
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/// ensures that the branch operation arguments matches up with the succesor
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/// block arguments.
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class ReturnOpTypeConversion : public OpConversionPattern<ReturnOp> {
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public:
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using OpConversionPattern<ReturnOp>::OpConversionPattern;
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LogicalResult
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matchAndRewrite(ReturnOp op, ArrayRef<Value> operands,
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ConversionPatternRewriter &rewriter) const final {
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// For a return, all operands go to the results of the parent, so
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// rewrite them all.
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Operation *operation = op.getOperation();
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rewriter.updateRootInPlace(
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op, [operands, operation]() { operation->setOperands(operands); });
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return success();
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}
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};
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} // end anonymous namespace
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void mlir::populateBranchOpInterfaceAndReturnOpTypeConversionPattern(
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OwningRewritePatternList &patterns, MLIRContext *ctx,
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TypeConverter &typeConverter) {
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patterns.insert<BranchOpInterfaceTypeConversion, ReturnOpTypeConversion>(
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typeConverter, ctx);
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}
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