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//===- MemRefToEmitC.cpp - MemRef to EmitC conversion ---------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements a pass to convert memref ops into emitc ops.
//
//===----------------------------------------------------------------------===//
#include "mlir/Conversion/MemRefToEmitC/MemRefToEmitCPass.h"
#include "mlir/Conversion/MemRefToEmitC/MemRefToEmitC.h"
#include "mlir/Dialect/EmitC/IR/EmitC.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/IR/Attributes.h"
#include "mlir/Pass/Pass.h"
#include "mlir/Transforms/DialectConversion.h"
namespace mlir {
#define GEN_PASS_DEF_CONVERTMEMREFTOEMITC
#include "mlir/Conversion/Passes.h.inc"
} // namespace mlir
using namespace mlir;
namespace {
struct ConvertMemRefToEmitCPass
: public impl::ConvertMemRefToEmitCBase<ConvertMemRefToEmitCPass> {
using Base::Base;
void runOnOperation() override {
TypeConverter converter;
ConvertMemRefToEmitCOptions options;
options.lowerToCpp = this->lowerToCpp;
// Fallback for other types.
converter.addConversion([](Type type) -> std::optional<Type> {
if (!emitc::isSupportedEmitCType(type))
return {};
return type;
});
populateMemRefToEmitCTypeConversion(converter);
RewritePatternSet patterns(&getContext());
populateMemRefToEmitCConversionPatterns(patterns, converter);
ConversionTarget target(getContext());
target.addIllegalDialect<memref::MemRefDialect>();
target.addLegalDialect<emitc::EmitCDialect>();
if (failed(applyPartialConversion(getOperation(), target,
std::move(patterns))))
return signalPassFailure();
mlir::ModuleOp module = getOperation();
module.walk([&](mlir::emitc::CallOpaqueOp callOp) {
if (callOp.getCallee() != alignedAllocFunctionName &&
callOp.getCallee() != mallocFunctionName) {
return mlir::WalkResult::advance();
}
for (auto &op : *module.getBody()) {
emitc::IncludeOp includeOp = llvm::dyn_cast<mlir::emitc::IncludeOp>(op);
if (!includeOp) {
continue;
}
if (includeOp.getIsStandardInclude() &&
((options.lowerToCpp &&
includeOp.getInclude() == cppStandardLibraryHeader) ||
(!options.lowerToCpp &&
includeOp.getInclude() == cStandardLibraryHeader))) {
return mlir::WalkResult::interrupt();
}
}
mlir::OpBuilder builder(module.getBody(), module.getBody()->begin());
StringAttr includeAttr =
builder.getStringAttr(options.lowerToCpp ? cppStandardLibraryHeader
: cStandardLibraryHeader);
builder.create<mlir::emitc::IncludeOp>(
module.getLoc(), includeAttr,
/*is_standard_include=*/builder.getUnitAttr());
return mlir::WalkResult::interrupt();
});
}
};
} // namespace
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