archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 07:14:30 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8174962: Better interface invocations

Browse source 
Reviewed-by: jrose, coleenp, ahgross, acorn, iignatyev
This commit is contained in:
Vladimir Ivanov 2017-05-26 18:39:27 +03:00
parent 65fe47bdf2
commit fa8b858052
38 changed files with 596 additions and 340 deletions
Download patch file Download diff file Expand all files Collapse all files

31
src/hotspot/cpu/sparc/macroAssembler_sparc.cpp
View file

@ -2058,9 +2058,10 @@ void MacroAssembler::lookup_interface_method(Register recv_klass,
Register method_result,
Register scan_temp,
Register sethi_temp,
Label& L_no_such_interface) {
Label& L_no_such_interface,
bool return_method) {
assert_different_registers(recv_klass, intf_klass, method_result, scan_temp);
assert(itable_index.is_constant() || itable_index.as_register() == method_result,
assert(!return_method || itable_index.is_constant() || itable_index.as_register() == method_result,
"caller must use same register for non-constant itable index as for method");
Label L_no_such_interface_restore;
@ -2092,11 +2093,13 @@ void MacroAssembler::lookup_interface_method(Register recv_klass,
add(scan_temp, itb_offset, scan_temp);
add(recv_klass, scan_temp, scan_temp);
// Adjust recv_klass by scaled itable_index, so we can free itable_index.
RegisterOrConstant itable_offset = itable_index;
itable_offset = regcon_sll_ptr(itable_index, exact_log2(itableMethodEntry::size() * wordSize), itable_offset);
itable_offset = regcon_inc_ptr(itable_offset, itableMethodEntry::method_offset_in_bytes(), itable_offset);
add(recv_klass, ensure_simm13_or_reg(itable_offset, sethi_temp), recv_klass);
if (return_method) {
// Adjust recv_klass by scaled itable_index, so we can free itable_index.
RegisterOrConstant itable_offset = itable_index;
itable_offset = regcon_sll_ptr(itable_index, exact_log2(itableMethodEntry::size() * wordSize), itable_offset);
itable_offset = regcon_inc_ptr(itable_offset, itableMethodEntry::method_offset_in_bytes(), itable_offset);
add(recv_klass, ensure_simm13_or_reg(itable_offset, sethi_temp), recv_klass);
}
// for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) {
// if (scan->interface() == intf) {
@ -2131,12 +2134,14 @@ void MacroAssembler::lookup_interface_method(Register recv_klass,
bind(L_found_method);
// Got a hit.
int ito_offset = itableOffsetEntry::offset_offset_in_bytes();
// scan_temp[-scan_step] points to the vtable offset we need
ito_offset -= scan_step;
lduw(scan_temp, ito_offset, scan_temp);
ld_ptr(recv_klass, scan_temp, method_result);
if (return_method) {
// Got a hit.
int ito_offset = itableOffsetEntry::offset_offset_in_bytes();
// scan_temp[-scan_step] points to the vtable offset we need
ito_offset -= scan_step;
lduw(scan_temp, ito_offset, scan_temp);
ld_ptr(recv_klass, scan_temp, method_result);
}
if (did_save) {
Label L_done;