[LLVMdev] printing constants

[Chris Lattner]

On Fri, 3 Mar 2006, anubham suresh wrote:
> Given code like:
>>
>>    X = add int Y, 1
>>    Z = mul int X, 17
>
> while I iterate over the  operands of the first
> instruction i want to print the variable x ,as well as
> the constant 1 and while i iterate over the second
> instruction i want to print variable x and constant
> 17.
> what should I do?

Use op_begin()/op_end():
http://llvm.cs.uiuc.edu/docs/ProgrammersManual.html#iterate_chains

-Chris

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>>    1. RE: printing constants (Chris Lattner)
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> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Thu, 2 Mar 2006 11:53:23 -0600 (CST)
>> From: Chris Lattner <sabre at nondot.org>
>> Subject: [LLVMdev] RE: printing constants
>> To: LLVM Developers Mailing List
>> <llvmdev at cs.uiuc.edu>
>> Message-ID:
>> <Pine.LNX.4.61.0603021150460.513 at nondot.org>
>> Content-Type: TEXT/PLAIN; charset=US-ASCII;
>> format=flowed
>>
>> On Thu, 2 Mar 2006, anubham suresh wrote:
>>> here I have a question regarding printing of the
>>> constants( like  2 .63 etc.,) present in the
>>> instruction while iterating over the instructions
>>> within a basic block .
>>> I am able to print the vaiables but not the
>>> constants.
>>> Can you please tell me how to get the constants
>>> printed out while iterating over the instructions
>>> because the constants do not have names as the
>>> variables do( like temp12,temp131 etc.,).
>>
>> I'm not really sure what you want to do.  If you're
>> trying to print out
>> all of the literal constants in instructions in a
>> function, you can use
>> the llvm/Analysis/ConstantsScanner.h interface to do
>> this.  Something like
>> this:
>>
>>    Function *F = ...
>>    for (constant_iterator I = constant_begin(F), E =
>> constant_end(F);
>>         I != E; ++I)
>>      std::cerr << *I;
>>
>> Given code like:
>>
>>    X = add int Y, 1
>>    Z = mul int X, 17
>>
>> It will print out 1 and 17.
>>
>> Is this what you mean?
>>
>> -Chris
>>
>> --
>> http://nondot.org/sabre/
>> http://llvm.org/
>>
>>
>>
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>
>
> Anubham Suresh
> Measurement and Instrumentation
> Electrical Department
> IIT Roorkee
> Current location:Darmstadt, Germany
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-Chris

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