llvm dev - Dec 2012 - [LLVMdev] how to get and modify a local variable's value through executionEngine?

hello guys,
recently, i successfully get and modify global variable by execution engine.
the functions i used are listed here:
 int m=1;
 EE->updateGlobalMapping(p->M->getGlobalVariable("x",true),&m);
 EE->recompileAndRelinkFunction(EntryFn);
x is the global variable in the module.
but how to modify the local variable in the module?



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Dong Chen <jameschennerd at gmail.com> writes:
> hello guys,
> recently, i successfully get and modify global variable by execution
engine.
> the functions i used are listed here:
>  int m=1;
> 
EE->updateGlobalMapping(p->M->getGlobalVariable("x",true),&m);
>  EE->recompileAndRelinkFunction(EntryFn);
> x is the global variable in the module.
> but how to modify the local variable in the module?
A local variable does not exists until the function that defines it is
executed, so pretending to get and modify it as you do for the global
makes no sense.

hello Óscar Fuentes,
thanks for your reply, if i use the API provided by parser.h and the program
*.ll i parsed contains local variable, i can get a module have local
variable without defines it first.
i think that module is a structure like AST(i am not sure whether i was
right), this must be a traversal method. am i right or do i misunderstand
something?



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