如何在LLVM中将genericValue转换为Value? [英] How to convert a genericValue to Value in LLVM?

问题描述

我正在翻译中.我在内存中有一个变量的地址，并且设法通过LoadValueFromMemory函数从中获取了真实值并将其放入genericValue中.现在，我需要创建一个StoreInst，并希望将此值放入Value对象中，以便在StoreInst中使用它.有什么主意吗?

I'm working in interpreter. I have the address of a variable in memory and I managed to get the real value form it and put it in a genericValue using LoadValueFromMemory function. Now I need to create a StoreInst and want to put this value got in a Value object to use it in the StoreInst. Any idea?

推荐答案

要回答标题中的问题，GenericValue只是一个与类型无关的容器，具有某些值.要从中创建LLVM Value，您需要创建 Constant 并使用该值初始化常量.

To answer the question in the title, GenericValue is just a type-agnostic container for some value. To create an LLVM Value from it, you need to create a Constant of the appropriate type, and use that value to initialize the constant.

我假设您是指从一个模块中获取值，然后在另一个不相关的模块中使用它，否则我不清楚为什么您要为此通过GenericValue:

I'm assuming you are referring to getting a value from one module and using it in another unrelated module, otherwise it's not clear to me why you pass through a GenericValue for this:

• 如果该值来自解释器端，则无需将其存储在GenericValue中，只需从该值创建一个Constant.
• 如果该值来自同一模块中的LLVM IR端，那么您也无需将该Value加载到GenericValue中，则可以在创建该文件时直接将Value用作参数. store指令.

• If the value came from the interpreter side, you don't need to store it in a GenericValue, you can just create a Constant from that value.
• If the value came from the LLVM IR side in the same module, you also don't need to load that Value into a GenericValue, you can just use that Value directly as the argument when creating the store instruction.

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