hg: jdk-updates/jdk11u-dev: 8222670: pathological case of JIT recompilation and code cache bloat

[paul.hohensee at gmail.com]

Changeset: 6e78a5d094ff
Author:    xliu
Date:      2019-06-13 08:46 -0700
URL:       http://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/6e78a5d094ff

8222670: pathological case of JIT recompilation and code cache bloat
Summary: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: sgehwolf, thartmann

! src/hotspot/share/compiler/compileBroker.hpp
! src/hotspot/share/oops/instanceKlass.cpp
! src/hotspot/share/prims/whitebox.cpp
! src/hotspot/share/runtime/simpleThresholdPolicy.cpp
+ test/hotspot/jtreg/compiler/tiered/Level2RecompilationTest.java
! test/lib/sun/hotspot/WhiteBox.java