8035828: Turn on @Stable support in VM

Reviewed-by: jrose, twisti

8035828: Turn on @Stable support in VM
Reviewed-by: jrose, twisti
24f894db · vlivanov · 93b4b14b · 24f894db · 24f894db · 24f894db
11 changed file
--- a/src/share/vm/opto/c2_globals.hpp
+++ b/src/share/vm/opto/c2_globals.hpp
@@ -458,7 +458,7 @@
  product(bool, EliminateAutoBox, false,                                    \
          "Control optimizations for autobox elimination")                  \
                                                                            \
-  experimental(bool, UseImplicitStableValues, false,                        \
+  diagnostic(bool, UseImplicitStableValues, true,                           \
          "Mark well-known stable fields as such (e.g. String.value)")      \
                                                                            \
  product(intx, AutoBoxCacheMax, 128,                                       \

--- a/src/share/vm/runtime/globals.hpp
+++ b/src/share/vm/runtime/globals.hpp
@@ -3798,8 +3798,8 @@ class CommandLineFlags {
  experimental(bool, TrustFinalNonStaticFields, false,                      \
          "trust final non-static declarations for constant folding")       \
                                                                            \
-  experimental(bool, FoldStableValues, false,                               \
+  diagnostic(bool, FoldStableValues, true,                                  \
-          "Private flag to control optimizations for stable variables")     \
+          "Optimize loads from stable fields (marked w/ @Stable)")          \
                                                                            \
  develop(bool, TraceInvokeDynamic, false,                                  \
          "trace internal invoke dynamic operations")                       \

--- a/test/compiler/stable/TestStableBoolean.java
+++ b/test/compiler/stable/TestStableBoolean.java
--- a/test/compiler/stable/TestStableByte.java
+++ b/test/compiler/stable/TestStableByte.java
--- a/test/compiler/stable/TestStableChar.java
+++ b/test/compiler/stable/TestStableChar.java
--- a/test/compiler/stable/TestStableDouble.java
+++ b/test/compiler/stable/TestStableDouble.java
--- a/test/compiler/stable/TestStableFloat.java
+++ b/test/compiler/stable/TestStableFloat.java
--- a/test/compiler/stable/TestStableInt.java
+++ b/test/compiler/stable/TestStableInt.java
--- a/test/compiler/stable/TestStableLong.java
+++ b/test/compiler/stable/TestStableLong.java
--- a/test/compiler/stable/TestStableObject.java
+++ b/test/compiler/stable/TestStableObject.java
--- a/test/compiler/stable/TestStableShort.java
+++ b/test/compiler/stable/TestStableShort.java