fix simple loop jump guarded conversion

src/Convert/Jump.hs

@@ -117,9 +117,10 @@ convertStmts stmts = do
     return stmts'
 
 
-pattern SimpleLoopInits :: Type -> Identifier -> Expr
+pattern SimpleLoopInits :: String -> Type -> Identifier -> Expr
     -> Either [Decl] [(LHS, Expr)]
-pattern SimpleLoopInits typ var expr = Left [Variable Local typ var [] expr]
+pattern SimpleLoopInits msg typ var expr =
+    Left [CommentDecl msg, Variable Local typ var [] expr]
 
 pattern SimpleLoopGuard :: BinOp -> Identifier -> Expr -> Expr
 pattern SimpleLoopGuard cmp var bound = BinOp cmp (Ident var) bound
@@ -177,7 +178,7 @@ convertStmt (Case unique kw expr cases) = do
     return $ Case unique kw expr cases'
 
 convertStmt (For
-    (inits @ (SimpleLoopInits _ var1 _))
+    (inits @ (SimpleLoopInits _ _ var1 _))
     (comp @ (SimpleLoopGuard _ var2 _))
     (incr @ (SimpleLoopIncrs var3 _ _))
     stmt) =

test/basic/simple_loop_jump.sv

@@ -0,0 +1,15 @@
+module top;
+    function automatic integer f;
+        input integer inp;
+        f = 1;
+        for (integer idx = 0; idx < inp; idx = idx + 1) begin
+            if (f == 32)
+                break;
+            f = f * 2;
+        end
+    endfunction
+    integer i;
+    initial
+        for (i = 0; i < 10; i = i + 1)
+            $display("f(%0d) = %0d", i, f(i));
+endmodule

test/basic/simple_loop_jump.v

@@ -0,0 +1,13 @@
+module top;
+    function automatic integer f;
+        input integer inp;
+        if (inp > 5)
+            f = 32;
+        else
+            f = 2 ** inp;
+    endfunction
+    integer i;
+    initial
+        for (i = 0; i < 10; i = i + 1)
+            $display("f(%0d) = %0d", i, f(i));
+endmodule