treat retc as non-escaping

We may well treat all rets as
non-escaping since stack slots
are destroyed upon funcion
return.

1 files changed, 2 insertions, 1 deletions

diff --git a/alias.c b/alias.c
index 6f082bc..50e659a 100644
--- a/alias.c
+++ b/alias.c
@@ -192,6 +192,7 @@ fillalias(Fn *fn)
 				}
 			}
 		}
-		esc(b->jmp.arg, fn);
+		if (b->jmp.type != Jretc)
+			esc(b->jmp.arg, fn);
 	}
 }