我正在尝试调用一个ThreadSafeModule
时需要Module*
的LLVM API。我查找ThreadSafeModule
,它具有以下构造函数:
ThreadSafeModule(ThreadSafeModule &&Other) = default;
/// Construct a ThreadSafeModule from a unique_ptr<Module> and a
/// unique_ptr<LLVMContext>. This creates a new ThreadSafeContext from the
/// given context.
ThreadSafeModule(std::unique_ptr<Module> M, std::unique_ptr<LLVMContext> Ctx)
: M(std::move(M)), TSCtx(std::move(Ctx)) {}
/// Construct a ThreadSafeModule from a unique_ptr<Module> and an
/// existing ThreadSafeContext.
ThreadSafeModule(std::unique_ptr<Module> M, ThreadSafeContext TSCtx)
: M(std::move(M)), TSCtx(std::move(TSCtx)) {}
第二个或第三个似乎合适,所以我尝试了几种变体:
ThreadSafeContext tsc;
ThreadSafeModule tsm(*module, tsc);
ThreadSafeModule tsm(module, tsc);
ThreadSafeModule tsm(std::move(*module), tsc);
ThreadSafeModule tsm(std::move(module), tsc);
auto tsm = new ThreadSafeModule(*module, tsc);
auto tsm = new ThreadSafeModule(module, tsc);
和上面的内容用LLVMContext*
而不是ThreadSafeContext
,在所有情况下,我都会得到基本相同的错误消息:
jit.cpp(21): error C2664: 'llvm::orc::ThreadSafeModule::ThreadSafeModule(const llvm::orc::ThreadSafeModule &)': cannot convert argument 1 from 'llvm::Module *' to 'std::unique_ptr<llvm::Module,std::default_delete<_Ty>>'
with
[
_Ty=llvm::Module
]
jit.cpp(21): note: Constructor for class 'std::unique_ptr<llvm::Module,std::default_delete<_Ty>>' is declared 'explicit'
with
[
_Ty=llvm::Module
]
错误消息的第一部分似乎是由于某种原因试图调用复制构造函数,但这似乎与下一部分矛盾。
你知道这是怎么回事,正确的咒语是什么?
编辑:
此行可以使用:
std::unique_ptr<Module> up(module);
但是这仍然失败:
ThreadSafeModule tsm(up, tsc);
,错误消息略有不同:
jit.cpp(23): error C2280: 'std::unique_ptr<llvm::Module,std::default_delete<_Ty>>::unique_ptr(const std::unique_ptr<_Ty,std::default_delete<_Ty>> &)': attempting to reference a deleted function
with
[
_Ty=llvm::Module
]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\memory(2337): note: see declaration of 'std::unique_ptr<llvm::Module,std::default_delete<_Ty>>::unique_ptr'
with
[
_Ty=llvm::Module
]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\memory(2337): note: 'std::unique_ptr<llvm::Module,std::default_delete<_Ty>>::unique_ptr(const std::unique_ptr<_Ty,std::default_delete<_Ty>> &)': function was explicitly deleted
with
[
_Ty=llvm::Module
] (compiling source file jit.cpp)
答案 0 :(得分:1)
感谢#llvm上的抢劫:答案是unique_ptr
必须单独构造然后再移动:
std::unique_ptr<Module> up(module);
ThreadSafeModule tsm(std::move(up), tsc);