llvm dev - Mar 2016 - Determine at runtime the value of operands

Hi,

I am a newbie to llvm. I work on a project that instruments an application
to extract some statistics, such as memory or instruction patterns.

I have a question about how can I determine at runtime the value stored in
the operands of an expression.

For the following C code and LLVM IR, how can I determine the value of the
argc variabile at runtime?

if (argc == 1) {

} else {

}

  %cmp.i = icmp eq i32 %argc, 1
  br i1 %cmp.i, label %f.exit, label %if.else.i

Thank you,
Evelina
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