hg: jdk8u/jdk8u-dev/hotspot: 8222670: pathological case of JIT recompilation and code cache bloat

[gnu.andrew at redhat.com]

Changeset: 61d955db2a5b
Author:    xliu
Date:      2019-06-05 03:07 +0100
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/61d955db2a5b

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

! src/share/vm/compiler/compileBroker.cpp
! src/share/vm/compiler/compileBroker.hpp
! src/share/vm/oops/instanceKlass.cpp
! src/share/vm/prims/whitebox.cpp
! src/share/vm/runtime/advancedThresholdPolicy.cpp
+ test/compiler/tiered/Level2RecompilationTest.java
! test/compiler/whitebox/CompilerWhiteBoxTest.java
! test/testlibrary/whitebox/sun/hotspot/WhiteBox.java