llvm dev - Nov 2012 - [LLVMdev] how to use lllvm interpreter api ?

Hi everyone,


I build the interpreter with the following codes

       * llvm::Module* mod = new
llvm::Module("",llvm::getGlobalContext());
        EngineBuilder builder(mod);
        builder.setEngineKind(EngineKind::Interpreter);
        builder.setOptLevel(CodeGenOpt::Default);
	EE = builder.create();*


then I make 2 functions, their ir look like : 

@1 = private unnamed_addr constant [11 x i8] c"1234567hi\0A\00"

*define void @setValue(i32* %v) {
  store i32 3, i32* %v, align 4
  ret void
}

define i32 @getValue() {
  %1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]*
@1, i32 0, i32 0))
  ret i32 3
}*


Assumed the first function is named f1, the second is f2

I call the function with codes

        *vector<GenericValue> arg;
        GenericValue rv;
	rv = EE->runFunction(f2,arg);
	cout<<rv.IntVal.toString(10,1)&lt;&lt;endl;&lt;/b>

the result look like what I want
it prints 1234567hi, then cout print 3

Here's what I am confused, how to pass the argument to function f1.

Currently, I do


* int p = 5;
GenericValue gg((void*)(&p));
    arg.push_back(gg);

    EE->runFunction(f1,arg);
 cout<<p&lt;&lt;endl;&lt;/b>

the output is 0

Does anyone know how to pass the argument ?


Chia Lun




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