Don't return an undefined Stmt() from IfThenElse visitor (#7816)

Fixes #7815
halide · Sep 1, 2023 · ddfb1dc · ddfb1dc
1 parent 24d846c
commit ddfb1dc
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/Simplify_Stmts.cpp b/src/Simplify_Stmts.cpp
@@ -63,7 +63,11 @@ Stmt Simplify::visit(const IfThenElse *op) {
     if (else_unreachable) {
         return then_case;
     } else if (then_unreachable) {
-        return else_case;
+        if (else_case.defined()) {
+            return else_case;
+        } else {
+            return Evaluate::make(0);
+        }
     }
 
     if (is_no_op(else_case)) {