hg: jdk/jdk13: 8229219: C2 compilation fails with assert: Bad graph detected in build_loop_late

[tobias.hartmann at oracle.com]

Changeset: 8f3fcb9251d1
Author:    thartmann
Date:      2019-08-08 07:05 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk13/rev/8f3fcb9251d1

8229219: C2 compilation fails with assert: Bad graph detected in build_loop_late
Summary: Backed out JDK-8173196.
Reviewed-by: shade, rbackman

! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.cpp
! src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp
! src/hotspot/share/opto/graphKit.cpp
! src/hotspot/share/opto/graphKit.hpp