[LLVMdev] InstCount

[John Criswell]

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.

> --Patrick
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