72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
//===- LoopAnnotationImporter.h ---------------------------------*- C++ -*-===//
|
|
//
|
|
// 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 the translation between LLVMIR loop metadata and the
|
|
// corresponding MLIR representation.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
|
|
#define MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
|
|
|
|
#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
|
|
#include "mlir/Target/LLVMIR/ModuleImport.h"
|
|
|
|
namespace mlir {
|
|
namespace LLVM {
|
|
namespace detail {
|
|
|
|
/// A helper class that converts llvm.loop metadata nodes into corresponding
|
|
/// LoopAnnotationAttrs and llvm.access.group nodes into AccessGroupAttrs.
|
|
class LoopAnnotationImporter {
|
|
public:
|
|
LoopAnnotationImporter(ModuleImport &moduleImport, OpBuilder &builder)
|
|
: moduleImport(moduleImport), builder(builder) {}
|
|
LoopAnnotationAttr translateLoopAnnotation(const llvm::MDNode *node,
|
|
Location loc);
|
|
|
|
/// Converts all LLVM access groups starting from node to MLIR access group
|
|
/// attributes. It stores a mapping from every nested access group node to the
|
|
/// translated attribute. Returns success if all conversions succeed and
|
|
/// failure otherwise.
|
|
LogicalResult translateAccessGroup(const llvm::MDNode *node, Location loc);
|
|
|
|
/// Returns the access group attribute that map to the access group nodes
|
|
/// starting from the access group metadata node. Returns failure, if any of
|
|
/// the attributes cannot be found.
|
|
FailureOr<SmallVector<AccessGroupAttr>>
|
|
lookupAccessGroupAttrs(const llvm::MDNode *node) const;
|
|
|
|
/// The ModuleImport owning this instance.
|
|
ModuleImport &moduleImport;
|
|
|
|
private:
|
|
/// Returns the LLVM metadata corresponding to a llvm loop metadata attribute.
|
|
LoopAnnotationAttr lookupLoopMetadata(const llvm::MDNode *node) const {
|
|
return loopMetadataMapping.lookup(node);
|
|
}
|
|
|
|
void mapLoopMetadata(const llvm::MDNode *metadata, LoopAnnotationAttr attr) {
|
|
auto result = loopMetadataMapping.try_emplace(metadata, attr);
|
|
(void)result;
|
|
assert(result.second &&
|
|
"attempting to map loop options that was already mapped");
|
|
}
|
|
|
|
OpBuilder &builder;
|
|
DenseMap<const llvm::MDNode *, LoopAnnotationAttr> loopMetadataMapping;
|
|
/// Mapping between original LLVM access group metadata nodes and the imported
|
|
/// MLIR access group attributes.
|
|
DenseMap<const llvm::MDNode *, AccessGroupAttr> accessGroupMapping;
|
|
};
|
|
|
|
} // namespace detail
|
|
} // namespace LLVM
|
|
} // namespace mlir
|
|
|
|
#endif // MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
|