llvm dev - Apr 2011 - [LLVMdev] inserting a fucntion call at the end of basic bloc

2011/4/25 Duncan Sands <baldrick at free.fr>
> Hi Nabila,
>
> > i would like insert a fucntion call at the end of each basic bloc
>
> you can't, because only terminators are allowed at the end of a basic
> block.
> However you can try to insert the call before the terminator.
>
Yes, i mean before the termininator,
My problem is how to call a method
suppose this fucntion
void A(int x)
{
  x=x+1;

}

should i define this function and declare it at the beginig of the module
and create for it a basic bloc?
and then how to call it before each basic bloc terminitor

...
>
> > i tried to see an example with the demo, i saw that it instead of
calling
> the
> > function, it repeats all the instruction that are existing in the
> function
> > Any help?
>
> Turn off optimization in the demo (optimization level "None").
>
> Ciao, Duncan.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20110425/88e8b589/attachment.html>

Hi Nabila,
> My problem is how to call a method
> suppose this fucntion
> void A(int x)
> {
>    x=x+1;
>
> }
>
> should i define this function and declare it at the beginig of the module
and
> create for it a basic bloc?
you can just declare the function (i.e. no need to give it a body), and call it.
You can then link with an object file that defines it.  This is simpler than
injecting the function into each module (though that is easy to do too).
> and then how to call it before each basic bloc terminitor
Use an IRBuilder.  Pass the basic block terminator to SetInsertPoint.  Use one
of the CreateCall IRBuilder methods to insert a call instruction.

Ciao, Duncan.
>
>     ...
>
>      > i tried to see an example with the demo, i saw that it instead of
calling the
>      > function, it repeats all the instruction that are existing in the
function
>      > Any help?
>
>     Turn off optimization in the demo (optimization level
"None").
>
>     Ciao, Duncan.
>     _______________________________________________
>     LLVM Developers mailing list
>     LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu>
http://llvm.cs.uiuc.edu
>     http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>

I have defined the fucntion in another object file and linked it to the
in fact the fucntion is :
void consume(int ,  int * );


 std::vector<Value*> int32_16_params;
int32_16_params.push_back(inValue);//inValue is ConstantInt* inValue
int32_16_params.push_back(gvar_int32_y);
CallInst* int32_16 = CallInst::Create(func_consume, int32_16_params.begin(),
int32_16_params.end(), "", ii);

compilation without errors
Now when i tried this pass an error says:
Wrong type for attribute noalias
tail call void @consume(i32 noalias 3, i32* @y) nounwind
Wrong type for attribute noalias
  tail call void @consume(i32 noalias 3, i32* @y) nounwind
Broken module found, compilation aborted!
0  libLLVM-2.8.so.1 0x019bc628
Stack dump:
0. Program arguments: opt -load
/home/inspiron/PhdWork/llvm-2.8/Release/lib/Example.so -Example2
1. Running pass 'Function Pass Manager' on module
'<stdin>'.
2. Running pass 'Module Verifier' on function '@main'
Aborted
Any help?

2011/4/25 Duncan Sands <baldrick at free.fr>
> Hi Nabila,
>
>
>  My problem is how to call a method
>> suppose this fucntion
>> void A(int x)
>> {
>>   x=x+1;
>>
>> }
>>
>> should i define this function and declare it at the beginig of the
module
>> and
>> create for it a basic bloc?
>>
>
> you can just declare the function (i.e. no need to give it a body), and
> call it.
> You can then link with an object file that defines it.  This is simpler
> than
> injecting the function into each module (though that is easy to do too).
>
>
>  and then how to call it before each basic bloc terminitor
>>
>
> Use an IRBuilder.  Pass the basic block terminator to SetInsertPoint.  Use
> one
> of the CreateCall IRBuilder methods to insert a call instruction.
>
> Ciao, Duncan.
>
>
>>    ...
>>
>>     > i tried to see an example with the demo, i saw that it instead
of
>> calling the
>>     > function, it repeats all the instruction that are existing in
the
>> function
>>     > Any help?
>>
>>    Turn off optimization in the demo (optimization level
"None").
>>
>>    Ciao, Duncan.
>>    _______________________________________________
>>    LLVM Developers mailing list
>>    LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu>
>> http://llvm.cs.uiuc.edu
>>
>>    http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20110426/b5fa3a0c/attachment.html>