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On Windows ARM64, how a struct value type is returned is sensitive to conditions including whether a user-defined constructor exists, etc. See https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#return-values That caused a calling convention mismatch between the non-USED_IN_CPP_SOURCE (Swift) side and the USE_IN_CPP_SOURCE (C++) side and a crash. Add this constructor so that the calling convention matches. This is a fix for the OnoneSimplification crash in https://github.com/swiftlang/swift/issues/74866#issuecomment-2319618579 and is a partial fix for https://github.com/swiftlang/swift/issues/74866#issuecomment-2319618579
85 lines
1.6 KiB
C++
85 lines
1.6 KiB
C++
#ifndef TEST_INTEROP_CXX_CLASS_METHOD_SRET_WIN_ARM64_H
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#define TEST_INTEROP_CXX_CLASS_METHOD_SRET_WIN_ARM64_H
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#include <stdint.h>
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namespace llvm {
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template<typename T>
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class ArrayRef {
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public:
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const T *Data = nullptr;
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size_t Length = 0;
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};
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} // namespace llvm
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namespace swift {
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class Type {
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};
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class SubstitutionMap {
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private:
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void *storage = nullptr;
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public:
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llvm::ArrayRef<Type> getReplacementTypes() const;
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};
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} // namespace swift
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class BridgedArrayRef {
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public:
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const void * Data;
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size_t Length;
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BridgedArrayRef() : Data(nullptr), Length(0) {}
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#ifdef USED_IN_CPP_SOURCE
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template <typename T>
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BridgedArrayRef(llvm::ArrayRef<T> arr)
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: Data(arr.Data), Length(arr.Length) {}
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template <typename T>
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llvm::ArrayRef<T> unbridged() const {
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return {static_cast<const T *>(Data), Length};
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}
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#endif
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};
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struct BridgedSubstitutionMap {
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uint64_t storage[1];
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#ifdef USED_IN_CPP_SOURCE
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BridgedSubstitutionMap(swift::SubstitutionMap map) {
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*reinterpret_cast<swift::SubstitutionMap *>(&storage) = map;
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}
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swift::SubstitutionMap unbridged() const {
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return *reinterpret_cast<const swift::SubstitutionMap *>(&storage);
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}
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#endif
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BridgedSubstitutionMap() {}
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};
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struct BridgedTypeArray {
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BridgedArrayRef typeArray;
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#ifdef AFTER_FIX
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BridgedTypeArray() : typeArray() {}
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#endif
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#ifdef USED_IN_CPP_SOURCE
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BridgedTypeArray(llvm::ArrayRef<swift::Type> types) : typeArray(types) {}
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llvm::ArrayRef<swift::Type> unbridged() const {
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return typeArray.unbridged<swift::Type>();
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}
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#endif
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static BridgedTypeArray fromReplacementTypes(BridgedSubstitutionMap substMap);
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};
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#endif // TEST_INTEROP_CXX_CLASS_METHOD_SRET_WIN_ARM64_H
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