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8255720: Optimize bci_to_dp/-data by enabling iteration over raw DataLayouts

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Reviewed-by: kvn, thartmann
This commit is contained in:
Claes Redestad 2020-11-02 13:25:11 +00:00
parent 4b775e64bd
commit 120aec7054
4 changed files with 98 additions and 28 deletions
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64
src/hotspot/share/oops/methodData.cpp
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@ -1099,6 +1099,40 @@ ProfileData* MethodData::data_at(int data_index) const {
return data_layout->data_in();
}
int DataLayout::cell_count() {
switch (tag()) {
case DataLayout::no_tag:
default:
ShouldNotReachHere();
return 0;
case DataLayout::bit_data_tag:
return BitData::static_cell_count();
case DataLayout::counter_data_tag:
return CounterData::static_cell_count();
case DataLayout::jump_data_tag:
return JumpData::static_cell_count();
case DataLayout::receiver_type_data_tag:
return ReceiverTypeData::static_cell_count();
case DataLayout::virtual_call_data_tag:
return VirtualCallData::static_cell_count();
case DataLayout::ret_data_tag:
return RetData::static_cell_count();
case DataLayout::branch_data_tag:
return BranchData::static_cell_count();
case DataLayout::multi_branch_data_tag:
return ((new MultiBranchData(this))->cell_count());
case DataLayout::arg_info_data_tag:
return ((new ArgInfoData(this))->cell_count());
case DataLayout::call_type_data_tag:
return ((new CallTypeData(this))->cell_count());
case DataLayout::virtual_call_type_data_tag:
return ((new VirtualCallTypeData(this))->cell_count());
case DataLayout::parameters_type_data_tag:
return ((new ParametersTypeData(this))->cell_count());
case DataLayout::speculative_trap_data_tag:
return SpeculativeTrapData::static_cell_count();
}
}
ProfileData* DataLayout::data_in() {
switch (tag()) {
case DataLayout::no_tag:
@ -1142,6 +1176,16 @@ ProfileData* MethodData::next_data(ProfileData* current) const {
return next;
}
DataLayout* MethodData::next_data_layout(DataLayout* current) const {
int current_index = dp_to_di((address)current);
int next_index = current_index + current->size_in_bytes();
if (out_of_bounds(next_index)) {
return NULL;
}
DataLayout* next = data_layout_at(next_index);
return next;
}
// Give each of the data entries a chance to perform specific
// data initialization.
void MethodData::post_initialize(BytecodeStream* stream) {
@ -1314,13 +1358,13 @@ bool MethodData::is_mature() const {
// Translate a bci to its corresponding data index (di).
address MethodData::bci_to_dp(int bci) {
ResourceMark rm;
ProfileData* data = data_before(bci);
ProfileData* prev = NULL;
for ( ; is_valid(data); data = next_data(data)) {
DataLayout* data = data_layout_before(bci);
DataLayout* prev = NULL;
for ( ; is_valid(data); data = next_data_layout(data)) {
if (data->bci() >= bci) {
if (data->bci() == bci) set_hint_di(dp_to_di(data->dp()));
else if (prev != NULL) set_hint_di(dp_to_di(prev->dp()));
return data->dp();
if (data->bci() == bci) set_hint_di(dp_to_di((address)data));
else if (prev != NULL) set_hint_di(dp_to_di((address)prev));
return (address)data;
}
prev = data;
}
@ -1329,11 +1373,11 @@ address MethodData::bci_to_dp(int bci) {
// Translate a bci to its corresponding data, or NULL.
ProfileData* MethodData::bci_to_data(int bci) {
ProfileData* data = data_before(bci);
for ( ; is_valid(data); data = next_data(data)) {
DataLayout* data = data_layout_before(bci);
for ( ; is_valid(data); data = next_data_layout(data)) {
if (data->bci() == bci) {
set_hint_di(dp_to_di(data->dp()));
return data;
set_hint_di(dp_to_di((address)data));
return data->data_in();
} else if (data->bci() > bci) {
break;
}