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# What's Changed ## New Type Solver - Many more fixes to crashes, assertions, and hangs - Annotated locals now countermand the inferred types of locals, meaning that for a type `type MyType = number | string`, `local foo : MyType = 5` behaves the same as `local foo = 5 :: MyType`, where before, foo would be assigned the type of the value on the rhs. - Type Normalization now respects resource limits. - Subtyping between classes and cyclic tables now supported ## Native Code Generation - Work on the Native Code Generation(NCG) allocator continues --- # Internal Contributors Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: James McNellis <jmcnellis@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> --------- Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: David Cope <dcope@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
57 lines
2 KiB
C++
57 lines
2 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include <memory>
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#include <stdint.h>
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namespace Luau
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{
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namespace CodeGen
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{
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// The NativeProtoExecData is constant metadata associated with a NativeProto.
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// We generally refer to the NativeProtoExecData via a pointer to the instruction
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// offsets array because this makes the logic in the entry gate simpler.
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class NativeModule;
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struct NativeProtoExecDataHeader
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{
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// The NativeModule that owns this NativeProto. This is initialized
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// when the NativeProto is bound to the NativeModule via assignToModule().
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NativeModule* nativeModule = nullptr;
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// We store the native code offset until the code is allocated in executable
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// pages, after which point we store the actual address.
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const uint8_t* entryOffsetOrAddress = nullptr;
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// The bytecode id of the proto
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uint32_t bytecodeId = 0;
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// The number of bytecode instructions in the proto. This is the number of
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// elements in the instruction offsets array following this header.
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uint32_t bytecodeInstructionCount = 0;
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// The size of the native code for this NativeProto, in bytes.
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size_t nativeCodeSize = 0;
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};
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// Make sure that the instruction offsets array following the header will be
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// correctly aligned:
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static_assert(sizeof(NativeProtoExecDataHeader) % sizeof(uint32_t) == 0);
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struct NativeProtoExecDataDeleter
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{
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void operator()(const uint32_t* instructionOffsets) const noexcept;
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};
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using NativeProtoExecDataPtr = std::unique_ptr<uint32_t[], NativeProtoExecDataDeleter>;
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[[nodiscard]] NativeProtoExecDataPtr createNativeProtoExecData(uint32_t bytecodeInstructionCount);
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void destroyNativeProtoExecData(const uint32_t* instructionOffsets) noexcept;
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[[nodiscard]] NativeProtoExecDataHeader& getNativeProtoExecDataHeader(uint32_t* instructionOffsets) noexcept;
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[[nodiscard]] const NativeProtoExecDataHeader& getNativeProtoExecDataHeader(const uint32_t* instructionOffsets) noexcept;
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} // namespace CodeGen
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} // namespace Luau
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