Provide proper function index and name in the FrameInfo (#824)

* fix function index

* Add function name to JITFunctionTag

* Add ModuleSyncString.

crates/jit/src/compiler.rs

@@ -166,9 +166,16 @@ impl Compiler {
             let body_len = compilation.get(i).body.len();
             self.jit_function_ranges
                 .push((ptr as usize, ptr as usize + body_len));
+            let func_index = module.func_index(i);
+            let func_name = module
+                .func_names
+                .get(func_index)
+                .cloned()
+                .unwrap_or_else(Default::default);
             let tag = jit_function_registry::JITFunctionTag {
                 module_id: module.name.clone(),
-                func_index: i.index(),
+                func_index: func_index.index(),
+                func_name,
             };
             jit_function_registry::register(ptr as usize, ptr as usize + body_len, tag);
         }