--- a/hotspot/src/share/vm/ci/ciField.cpp Mon Sep 09 19:53:28 2013 +0200
+++ b/hotspot/src/share/vm/ci/ciField.cpp Tue Sep 10 14:51:48 2013 -0700
@@ -189,12 +189,14 @@
_holder = CURRENT_ENV->get_instance_klass(fd->field_holder());
// Check to see if the field is constant.
- if (_holder->is_initialized() && this->is_final()) {
+ bool is_final = this->is_final();
+ bool is_stable = FoldStableValues && this->is_stable();
+ if (_holder->is_initialized() && (is_final || is_stable)) {
if (!this->is_static()) {
// A field can be constant if it's a final static field or if
// it's a final non-static field of a trusted class (classes in
// java.lang.invoke and sun.invoke packages and subpackages).
- if (trust_final_non_static_fields(_holder)) {
+ if (is_stable || trust_final_non_static_fields(_holder)) {
_is_constant = true;
return;
}
@@ -227,7 +229,6 @@
Handle mirror = k->java_mirror();
- _is_constant = true;
switch(type()->basic_type()) {
case T_BYTE:
_constant_value = ciConstant(type()->basic_type(), mirror->byte_field(_offset));
@@ -273,6 +274,12 @@
}
}
}
+ if (is_stable && _constant_value.is_null_or_zero()) {
+ // It is not a constant after all; treat it as uninitialized.
+ _is_constant = false;
+ } else {
+ _is_constant = true;
+ }
} else {
_is_constant = false;
}
@@ -373,8 +380,11 @@
tty->print(" signature=");
_signature->print_symbol();
tty->print(" offset=%d type=", _offset);
- if (_type != NULL) _type->print_name();
- else tty->print("(reference)");
+ if (_type != NULL)
+ _type->print_name();
+ else
+ tty->print("(reference)");
+ tty->print(" flags=%04x", flags().as_int());
tty->print(" is_constant=%s", bool_to_str(_is_constant));
if (_is_constant && is_static()) {
tty->print(" constant_value=");