hg: jdk/submit: 8237086: assert(is_MachReturn()) running CTW with fix for JDK-8231291

[rwestrel at redhat.com]

Changeset: b259698025cf
Author:    roland
Date:      2020-01-14 14:58 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/b259698025cf

8237086: assert(is_MachReturn()) running CTW with fix for JDK-8231291
Reviewed-by: kvn, vlivanov

! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/graphKit.cpp