Some useful comments

hercules_ir/src/ir.rs

@@ -115,7 +115,10 @@ pub enum Constant {
  */
 #[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub enum DynamicConstant {
+    // The usize here is a constant value.
     Constant(usize),
+    // The usize here is an index (which dynamic constant parameter of a
+    // function is this).
     Parameter(usize),
 }
 

hercules_samples/matmul/src/main.rs

@@ -2,6 +2,10 @@ extern crate async_std;
 extern crate clap;
 extern crate hercules_rt;
 
+// To compile currently, run from the Hercules project root directory:
+// cargo run --bin hercules_driver hercules_samples/matmul/matmul.hir "Codegen(\"matmul.hbin\")"
+// Then, you can execute this example with:
+// cargo run --bin hercules_matmul
 hercules_rt::use_hbin!("matmul.hbin");
 
 fn main() {