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trunk
toolchain/check/cpp/thunk.h
39 строк
2 KB
Geoff Romer
Import C++ ref parameters as ref parameters (#6360)
13 ноя 2025, 20:04
Не верифицирован
13 ноя 2025, 20:04
0873777
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM // Exceptions. See /LICENSE for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #ifndef CARBON_TOOLCHAIN_CHECK_CPP_THUNK_H_ #define CARBON_TOOLCHAIN_CHECK_CPP_THUNK_H_ #include "toolchain/check/context.h" #include "toolchain/sem_ir/ids.h" namespace Carbon::Check { // Returns whether the given C++ imported function requires a C++ thunk to be // used to call it. A C++ thunk is required for functions whose ABI uses any // type except void, pointer and reference types, and signed 32-bit and 64-bit // integers. auto IsCppThunkRequired(Context& context, const SemIR::Function& function) -> bool; // Given a function signature and a callee function, builds a C++ thunk with // simple ABI (pointers, i32 and i64 types) that calls the specified callee. // Assumes `IsCppThunkRequired()` return true for `callee_function`. Returns // `nullptr` on failure. auto BuildCppThunk(Context& context, const SemIR::Function& callee_function) -> clang::FunctionDecl*; // Builds a call to a thunk function that forwards a call argument list built // for `callee_function_id` to a call to `thunk_callee_id`, for use when // building a call from a C++ thunk to its target. This is like `PerformCall`, // except that it takes a list of call arguments for `callee_function_id`, not a // syntactic argument list. auto PerformCppThunkCall(Context& context, SemIR::LocId loc_id, SemIR::FunctionId callee_function_id, llvm::ArrayRef<SemIR::InstId> callee_arg_ids, SemIR::InstId thunk_callee_id) -> SemIR::InstId; } // namespace Carbon::Check #endif // CARBON_TOOLCHAIN_CHECK_CPP_THUNK_H_