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comparison src/cpu/x86/vm/interp_masm_x86_64.cpp @ 12882:ce0cc25bc5e2

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8026054: New type profiling points: type of return values at calls Summary: x86 interpreter and c1 type profiling for return values at calls Reviewed-by: kvn, twisti
author roland
date Sat, 12 Oct 2013 12:12:59 +0200
parents d13d7aba8c12
children 5ccbab1c69f3
comparison
equal deleted inserted replaced
12881:ed2c74787eb5 12882:ce0cc25bc5e2
1118 void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual) { 1118 void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual) {
1119 if (!ProfileInterpreter) { 1119 if (!ProfileInterpreter) {
1120 return; 1120 return;
1121 } 1121 }
1122 1122
1123 if (MethodData::profile_arguments()) { 1123 if (MethodData::profile_arguments() || MethodData::profile_return()) {
1124 Label profile_continue; 1124 Label profile_continue;
1125 1125
1126 test_method_data_pointer(mdp, profile_continue); 1126 test_method_data_pointer(mdp, profile_continue);
1127 1127
1128 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size()); 1128 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size());
1129 1129
1130 cmpb(Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start), is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag); 1130 cmpb(Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start), is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag);
1131 jcc(Assembler::notEqual, profile_continue); 1131 jcc(Assembler::notEqual, profile_continue);
1132 1132
1133 Label done; 1133 if (MethodData::profile_arguments()) {
1134 int off_to_args = in_bytes(TypeStackSlotEntries::args_data_offset()); 1134 Label done;
1135 addptr(mdp, off_to_args); 1135 int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset());
1136 1136 addptr(mdp, off_to_args);
1137 for (int i = 0; i < TypeProfileArgsLimit; i++) { 1137
1138 if (i > 0) { 1138 for (int i = 0; i < TypeProfileArgsLimit; i++) {
1139 movq(tmp, Address(mdp, in_bytes(TypeStackSlotEntries::cell_count_offset())-off_to_args)); 1139 if (i > 0 || MethodData::profile_return()) {
1140 subl(tmp, i*TypeStackSlotEntries::per_arg_count()); 1140 // If return value type is profiled we may have no argument to profile
1141 cmpl(tmp, TypeStackSlotEntries::per_arg_count()); 1141 movq(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args));
1142 jcc(Assembler::less, done); 1142 subl(tmp, i*TypeStackSlotEntries::per_arg_count());
1143 cmpl(tmp, TypeStackSlotEntries::per_arg_count());
1144 jcc(Assembler::less, done);
1145 }
1146 movptr(tmp, Address(callee, Method::const_offset()));
1147 load_unsigned_short(tmp, Address(tmp, ConstMethod::size_of_parameters_offset()));
1148 subq(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args));
1149 subl(tmp, 1);
1150 Address arg_addr = argument_address(tmp);
1151 movptr(tmp, arg_addr);
1152
1153 Address mdo_arg_addr(mdp, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args);
1154 profile_obj_type(tmp, mdo_arg_addr);
1155
1156 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size());
1157 addptr(mdp, to_add);
1158 off_to_args += to_add;
1143 } 1159 }
1144 movptr(tmp, Address(callee, Method::const_offset())); 1160
1145 load_unsigned_short(tmp, Address(tmp, ConstMethod::size_of_parameters_offset())); 1161 if (MethodData::profile_return()) {
1146 subq(tmp, Address(mdp, in_bytes(TypeStackSlotEntries::stack_slot_offset(i))-off_to_args)); 1162 movq(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args));
1147 subl(tmp, 1); 1163 subl(tmp, TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count());
1148 Address arg_addr = argument_address(tmp); 1164 }
1149 movptr(tmp, arg_addr); 1165
1150 1166 bind(done);
1151 Address mdo_arg_addr(mdp, in_bytes(TypeStackSlotEntries::type_offset(i))-off_to_args); 1167
1152 profile_obj_type(tmp, mdo_arg_addr); 1168 if (MethodData::profile_return()) {
1153 1169 // We're right after the type profile for the last
1154 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size()); 1170 // argument. tmp is the number of cell left in the
1155 addptr(mdp, to_add); 1171 // CallTypeData/VirtualCallTypeData to reach its end. Non null
1156 off_to_args += to_add; 1172 // if there's a return to profile.
1173 assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type");
1174 shll(tmp, exact_log2(DataLayout::cell_size));
1175 addptr(mdp, tmp);
1176 }
1177 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp);
1178 } else {
1179 assert(MethodData::profile_return(), "either profile call args or call ret");
1180 update_mdp_by_constant(mdp, in_bytes(ReturnTypeEntry::size()));
1157 } 1181 }
1158 1182
1159 bind(done); 1183 // mdp points right after the end of the
1160 1184 // CallTypeData/VirtualCallTypeData, right after the cells for the
1161 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp); 1185 // return value type if there's one
1186
1187 bind(profile_continue);
1188 }
1189 }
1190
1191 void InterpreterMacroAssembler::profile_return_type(Register mdp, Register ret, Register tmp) {
1192 assert_different_registers(mdp, ret, tmp, r13);
1193 if (ProfileInterpreter && MethodData::profile_return()) {
1194 Label profile_continue, done;
1195
1196 test_method_data_pointer(mdp, profile_continue);
1197
1198 if (MethodData::profile_return_jsr292_only()) {
1199 // If we don't profile all invoke bytecodes we must make sure
1200 // it's a bytecode we indeed profile. We can't go back to the
1201 // begining of the ProfileData we intend to update to check its
1202 // type because we're right after it and we don't known its
1203 // length
1204 Label do_profile;
1205 cmpb(Address(r13, 0), Bytecodes::_invokedynamic);
1206 jcc(Assembler::equal, do_profile);
1207 cmpb(Address(r13, 0), Bytecodes::_invokehandle);
1208 jcc(Assembler::equal, do_profile);
1209 get_method(tmp);
1210 cmpb(Address(tmp, Method::intrinsic_id_offset_in_bytes()), vmIntrinsics::_compiledLambdaForm);
1211 jcc(Assembler::notEqual, profile_continue);
1212
1213 bind(do_profile);
1214 }
1215
1216 Address mdo_ret_addr(mdp, -in_bytes(ReturnTypeEntry::size()));
1217 mov(tmp, ret);
1218 profile_obj_type(tmp, mdo_ret_addr);
1162 1219
1163 bind(profile_continue); 1220 bind(profile_continue);
1164 } 1221 }
1165 } 1222 }
1166 1223