[LLVMdev] InstCount

[Patrick Simmons]

John Criswell wrote:
> Patrick Simmons wrote:
>   
>> Hello,
>>
>> I'm trying to print the instruction count of a bytecode file using the 
>> 2.4 release of LLVM.  I found llvm-2.4/lib/Analysis/Instcount.cpp but 
>> I'm not sure what to do with it.  I also looked at llvm-bcanalyzer.  The 
>> documentation says this command is supposed to print the instruction 
>> count in the summary, but it doesn't seem to be doing so.
>>
>> Does anyone know what I should be doing?
>>   
>>     
> Looking at the LLVM 2.5 version, it prints out the count of the number
> of instructions as part of its statistics.
>
> To run it on a bitcode file, you should be able to do the following:
>
> opt -stats -analyze -instcount <bitcodefile>
>
> The -stats option tells opt to print statistics collected by each pass. 
> The -analyze option tells opt that it is only doing analysis and not any
> transformation.  The -instcount is the command line option to run the
> code in InstCount.cpp (notice the RegisterPass line in the source code;
> this assigns a command line option to the pass for use in opt).
>
> -- John T.
>
>   
It works; thanks!

--Patrick