Merge branch 'fix_no_entries' into 'main'

Explicitly panic when there are no entry functions

See merge request !71

hercules_opt/src/pass.rs

@@ -700,6 +700,8 @@ impl PassManager {
 
                     self.fix_deleted_functions(&new_idx);
                     self.clear_analyses();
+
+                    assert!(self.module.functions.len() > 0, "PANIC: There are no entry functions in the Hercules module being compiled, and they all got deleted by DeleteUncalled. Please mark at least one function as an entry!");
                 }
                 Pass::Verify => {
                     let (

juno_samples/cava.jn

@@ -205,6 +205,7 @@ fn tone_map<row : usize, col:usize>
   return result;
 }
 
+#[entry]
 fn cava<r, c : usize>(input : u8[CHAN, r, c], TsTw : f32[CHAN, CHAN],
                       ctrl_pts : f32[CTRL_PTS, CHAN],
                       weights : f32[CTRL_PTS, CHAN],