hg: valhalla/valhalla: 8230023: [lworld] CompiledMethod::preserve_callee_argument_oops needs to keep signature symbol alive

[tobias.hartmann at oracle.com]

Changeset: 74a9bf9bbd76
Author:    thartmann
Date:      2019-08-22 12:59 +0200
URL:       https://hg.openjdk.java.net/valhalla/valhalla/rev/74a9bf9bbd76

8230023: [lworld] CompiledMethod::preserve_callee_argument_oops needs to keep signature symbol alive

! src/hotspot/share/code/compiledMethod.cpp