hg: jdk/submit: 8220501: Improve c1_ValueStack locks handling

[claes.redestad at oracle.com]

Changeset: 9c6508806663
Author:    redestad
Date:      2019-03-12 15:29 +0100
URL:       http://hg.openjdk.java.net/jdk/submit/rev/9c6508806663

8220501: Improve c1_ValueStack locks handling
Reviewed-by: thartmann, neliasso

! src/hotspot/share/c1/c1_ValueStack.cpp
! src/hotspot/share/c1/c1_ValueStack.hpp