llvm dev - Mar 2006 - [LLVMdev] could you give me some advice ?

hi
I have one llvm program like this :
...
; define ConstantArray
"E1$str" = internal constant [3 x sbyte] c"E1\00"

; use getPtrPtrFromArrayPtr to define SByte* from ConstantArray 
"E1$entry" = internal constant sbyte* getelementptr ([3 x sbyte]*
"E1$str", uint 0, uint 0)
...

when i want to get std::string object from this declaration in another program

	Module* m = loadModule("XXX.bc");
	Constant* c =  findValue(m,"E1$entry");
	GlobalVariable* gv = cast<GlobalVariable>(c->getOperand(0));
	ConstantArray* ca = cast<ConstantArray>(gv->getOperand(0));
 	std::string str = ca->getAsString();

now str = "E1"
these code looks a little ugly , could you tell me better solution ?
In another word , I want to know the reverse operation of
ConstantExpr::getPtrPtrFromArrayPtr .

thanks

On Sat, 25 Mar 2006, lizhuo wrote:
> ; define ConstantArray
> "E1$str" = internal constant [3 x sbyte] c"E1\00"
>
> ; use getPtrPtrFromArrayPtr to define SByte* from ConstantArray
> "E1$entry" = internal constant sbyte* getelementptr ([3 x sbyte]*
"E1$str", uint 0, uint 0)
> ...
>
> when i want to get std::string object from this declaration in another
program
>
> 	Module* m = loadModule("XXX.bc");
> 	Constant* c =  findValue(m,"E1$entry");
> 	GlobalVariable* gv = cast<GlobalVariable>(c->getOperand(0));
> 	ConstantArray* ca = cast<ConstantArray>(gv->getOperand(0));
> 	std::string str = ca->getAsString();
>
> now str = "E1"
> these code looks a little ugly , could you tell me better solution ?
> In another word , I want to know the reverse operation of
ConstantExpr::getPtrPtrFromArrayPtr .
I'm not sure I understand.  You have a pointer to "E1$entry" and
you want
the string it points to?  I assume this is what your findValue 
function does?

-Chris

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