title: MSIL instructions that load constants
body: <p>I just read <a href="http://www.codeproject.com/Articles/32308/Using-Reflection-Emit-to-Precompile-Expressions-to" rel="nofollow">an article</a> and saw and only one  MSIL instruction that loads constants. That's  <code>ldc.r8</code>  and that's loads <code>double</code> constant. </p>
  
  <p>Now I'm curious about that. I did a google search but barely found something. Can you tell me, what kind of constant load instructions are there in .NET? Where do I read about them?</p>