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8237767: Field layout computation overhaul

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Reviewed-by: dholmes, coleenp, lfoltan, shade
This commit is contained in:
Frederic Parain 2020-02-10 09:49:12 -05:00
parent 304d764a72
commit 9886cb401c
19 changed files with 1528 additions and 231 deletions
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20
src/hotspot/share/runtime/deoptimization.cpp
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@ -1156,18 +1156,18 @@ int compare(ReassignedField* left, ReassignedField* right) {
// Restore fields of an eliminated instance object using the same field order
// returned by HotSpotResolvedObjectTypeImpl.getInstanceFields(true)
static int reassign_fields_by_klass(InstanceKlass* klass, frame* fr, RegisterMap* reg_map, ObjectValue* sv, int svIndex, oop obj, bool skip_internal) {
if (klass->superklass() != NULL) {
svIndex = reassign_fields_by_klass(klass->superklass(), fr, reg_map, sv, svIndex, obj, skip_internal);
}
GrowableArray<ReassignedField>* fields = new GrowableArray<ReassignedField>();
for (AllFieldStream fs(klass); !fs.done(); fs.next()) {
if (!fs.access_flags().is_static() && (!skip_internal || !fs.access_flags().is_internal())) {
ReassignedField field;
field._offset = fs.offset();
field._type = Signature::basic_type(fs.signature());
fields->append(field);
InstanceKlass* ik = klass;
while (ik != NULL) {
for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
if (!fs.access_flags().is_static() && (!skip_internal || !fs.access_flags().is_internal())) {
ReassignedField field;
field._offset = fs.offset();
field._type = Signature::basic_type(fs.signature());
fields->append(field);
}
}
ik = ik->superklass();
}
fields->sort(compare);
for (int i = 0; i < fields->length(); i++) {