mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
//===--- NativeConventionSchema.h - R-Value Schema for SwiftCC --*- C++ -*-===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See https://swift.org/LICENSE.txt for license information
|
|
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// A schema that describes the explosion of values for passing according to the
|
|
// native calling convention.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef SWIFT_IRGEN_NATIVECONVENTIONSCHEMA_H
|
|
#define SWIFT_IRGEN_NATIVECONVENTIONSCHEMA_H
|
|
|
|
#include "clang/CodeGen/SwiftCallingConv.h"
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "IRGen.h"
|
|
#include "IRGenFunction.h"
|
|
|
|
namespace swift {
|
|
namespace irgen {
|
|
|
|
using SwiftAggLowering = clang::CodeGen::swiftcall::SwiftAggLowering;
|
|
|
|
class NativeConventionSchema {
|
|
SwiftAggLowering Lowering;
|
|
bool RequiresIndirect;
|
|
|
|
public:
|
|
using EnumerationCallback = SwiftAggLowering::EnumerationCallback;
|
|
|
|
NativeConventionSchema(IRGenModule &IGM, const TypeInfo *TI, bool isResult);
|
|
|
|
NativeConventionSchema() = delete;
|
|
NativeConventionSchema(const NativeConventionSchema &) = delete;
|
|
NativeConventionSchema &operator=(const NativeConventionSchema&) = delete;
|
|
|
|
bool requiresIndirect() const { return RequiresIndirect; }
|
|
bool shouldReturnTypedErrorIndirectly() const {
|
|
return requiresIndirect() || Lowering.shouldReturnTypedErrorIndirectly();
|
|
}
|
|
bool empty() const { return Lowering.empty(); }
|
|
|
|
llvm::Type *getExpandedType(IRGenModule &IGM) const;
|
|
|
|
/// The number of components in the schema.
|
|
unsigned size() const;
|
|
|
|
void enumerateComponents(EnumerationCallback callback) const {
|
|
Lowering.enumerateComponents(callback);
|
|
}
|
|
|
|
/// Map from a non-native explosion to an explosion that follows the native
|
|
/// calling convention's schema.
|
|
Explosion mapIntoNative(IRGenModule &IGM, IRGenFunction &IGF,
|
|
Explosion &fromNonNative, SILType type,
|
|
bool isOutlined, bool mayPeepholeLoad = false) const;
|
|
|
|
/// Map form a native explosion that follows the native calling convention's
|
|
/// schema to a non-native explosion whose schema is described by
|
|
/// type.getSchema().
|
|
Explosion mapFromNative(IRGenModule &IGM, IRGenFunction &IGF,
|
|
Explosion &native, SILType type) const;
|
|
|
|
/// Return a pair of structs that can be used to load/store the components of
|
|
/// the native schema from/to the memory representation as defined by the
|
|
/// value's loadable type info.
|
|
/// The second layout is only necessary if there are overlapping components in
|
|
/// the legal type sequence. It contains the non-integer components of
|
|
/// overlapped components of the legal type sequence.
|
|
///
|
|
/// \p ExpandedTyIndices is a map from the non-array type elements of the
|
|
/// returned struct types (viewed concatenated) to the index in the expanded
|
|
/// type.
|
|
std::pair<llvm::StructType *, llvm::StructType *>
|
|
getCoercionTypes(IRGenModule &IGM,
|
|
SmallVectorImpl<unsigned> &expandedTyIndicesMap) const;
|
|
};
|
|
|
|
|
|
} // end namespace irgen
|
|
} // end namespace swift
|
|
|
|
#endif
|