Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/ci/bcEscapeAnalyzer.cpp
src/share/vm/ci/bcEscapeAnalyzer.cpp
- changeset 9736
- 940791dabea2
- parent 7626
- 364f6c28effb
- child 9756
- 2be326848943
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| 9735:bd6ec847115e | 9736:940791dabea2 |
|---|---|
| 1168 worklist.push(succ); | 1168 worklist.push(succ); |
| 1169 } | 1169 } |
| 1170 } | 1170 } |
| 1171 } | 1171 } |
| 1172 | 1172 |
| 1173 bool BCEscapeAnalyzer::do_analysis() { | 1173 void BCEscapeAnalyzer::do_analysis() { |
| 1174 Arena* arena = CURRENT_ENV->arena(); | 1174 Arena* arena = CURRENT_ENV->arena(); |
| 1175 // identify basic blocks | 1175 // identify basic blocks |
| 1176 _methodBlocks = _method->get_method_blocks(); | 1176 _methodBlocks = _method->get_method_blocks(); |
| 1177 | 1177 |
| 1178 iterate_blocks(arena); | 1178 iterate_blocks(arena); |
| 1179 // TEMPORARY | |
| 1180 return true; | |
| 1181 } | 1179 } |
| 1182 | 1180 |
| 1183 vmIntrinsics::ID BCEscapeAnalyzer::known_intrinsic() { | 1181 vmIntrinsics::ID BCEscapeAnalyzer::known_intrinsic() { |
| 1184 vmIntrinsics::ID iid = method()->intrinsic_id(); | 1182 vmIntrinsics::ID iid = method()->intrinsic_id(); |
| 1185 | |
| 1186 if (iid == vmIntrinsics::_getClass || | 1183 if (iid == vmIntrinsics::_getClass || |
| 1187 iid == vmIntrinsics::_fillInStackTrace || | 1184 iid == vmIntrinsics::_fillInStackTrace || |
| 1188 iid == vmIntrinsics::_hashCode) | 1185 iid == vmIntrinsics::_hashCode) { |
| 1189 return iid; | 1186 return iid; |
| 1190 else | 1187 } else { |
| 1191 return vmIntrinsics::_none; | 1188 return vmIntrinsics::_none; |
| 1192 } | 1189 } |
| 1193 | 1190 } |
| 1194 bool BCEscapeAnalyzer::compute_escape_for_intrinsic(vmIntrinsics::ID iid) { | 1191 |
| 1192 void BCEscapeAnalyzer::compute_escape_for_intrinsic(vmIntrinsics::ID iid) { | |
| 1195 ArgumentMap arg; | 1193 ArgumentMap arg; |
| 1196 arg.clear(); | 1194 arg.clear(); |
| 1197 switch (iid) { | 1195 switch (iid) { |
| 1198 case vmIntrinsics::_getClass: | 1196 case vmIntrinsics::_getClass: |
| 1199 _return_local = false; | 1197 _return_local = false; |
| 1200 break; | 1198 _return_allocated = false; |
| 1201 case vmIntrinsics::_fillInStackTrace: | 1199 break; |
| 1202 arg.set(0); // 'this' | 1200 case vmIntrinsics::_fillInStackTrace: |
| 1203 set_returned(arg); | 1201 arg.set(0); // 'this' |
| 1204 break; | 1202 set_returned(arg); |
| 1205 case vmIntrinsics::_hashCode: | 1203 break; |
| 1206 // initialized state is correct | 1204 case vmIntrinsics::_hashCode: |
| 1207 break; | 1205 // initialized state is correct |
| 1206 break; | |
| 1208 default: | 1207 default: |
| 1209 assert(false, "unexpected intrinsic"); | 1208 assert(false, "unexpected intrinsic"); |
| 1210 } | 1209 } |
| 1211 return true; | |
| 1212 } | 1210 } |
| 1213 | 1211 |
| 1214 void BCEscapeAnalyzer::initialize() { | 1212 void BCEscapeAnalyzer::initialize() { |
| 1215 int i; | 1213 int i; |
| 1216 | 1214 |
| 1277 assert(!methodData()->has_escape_info(), "do not overwrite escape info"); | 1275 assert(!methodData()->has_escape_info(), "do not overwrite escape info"); |
| 1278 | 1276 |
| 1279 vmIntrinsics::ID iid = known_intrinsic(); | 1277 vmIntrinsics::ID iid = known_intrinsic(); |
| 1280 | 1278 |
| 1281 // check if method can be analyzed | 1279 // check if method can be analyzed |
| 1282 if (iid == vmIntrinsics::_none && (method()->is_abstract() || method()->is_native() || !method()->holder()->is_initialized() | 1280 if (iid == vmIntrinsics::_none && (method()->is_abstract() || method()->is_native() || !method()->holder()->is_initialized() |
| 1283 || _level > MaxBCEAEstimateLevel | 1281 || _level > MaxBCEAEstimateLevel |
| 1284 || method()->code_size() > MaxBCEAEstimateSize)) { | 1282 || method()->code_size() > MaxBCEAEstimateSize)) { |
| 1285 if (BCEATraceLevel >= 1) { | 1283 if (BCEATraceLevel >= 1) { |
| 1286 tty->print("Skipping method because: "); | 1284 tty->print("Skipping method because: "); |
| 1287 if (method()->is_abstract()) | 1285 if (method()->is_abstract()) |
| 1310 tty->print(" intrinsic"); | 1308 tty->print(" intrinsic"); |
| 1311 method()->print_short_name(); | 1309 method()->print_short_name(); |
| 1312 tty->print_cr(" (%d bytes)", method()->code_size()); | 1310 tty->print_cr(" (%d bytes)", method()->code_size()); |
| 1313 } | 1311 } |
| 1314 | 1312 |
| 1315 bool success; | |
| 1316 | |
| 1317 initialize(); | 1313 initialize(); |
| 1318 | 1314 |
| 1319 // Do not scan method if it has no object parameters and | 1315 // Do not scan method if it has no object parameters and |
| 1320 // does not returns an object (_return_allocated is set in initialize()). | 1316 // does not returns an object (_return_allocated is set in initialize()). |
| 1321 if (_arg_local.Size() == 0 && !_return_allocated) { | 1317 if (_arg_local.Size() == 0 && !_return_allocated) { |
| 1327 methodData()->set_eflag(MethodData::estimated); | 1323 methodData()->set_eflag(MethodData::estimated); |
| 1328 return; | 1324 return; |
| 1329 } | 1325 } |
| 1330 | 1326 |
| 1331 if (iid != vmIntrinsics::_none) | 1327 if (iid != vmIntrinsics::_none) |
| 1332 success = compute_escape_for_intrinsic(iid); | 1328 compute_escape_for_intrinsic(iid); |
| 1333 else { | 1329 else { |
| 1334 success = do_analysis(); | 1330 do_analysis(); |
| 1335 } | 1331 } |
| 1336 | 1332 |
| 1337 // don't store interprocedural escape information if it introduces | 1333 // don't store interprocedural escape information if it introduces |
| 1338 // dependencies or if method data is empty | 1334 // dependencies or if method data is empty |
| 1339 // | 1335 // |
