Wed, 23 Oct 2013 12:40:23 +0200
8024070: C2 needs some form of type speculation
Summary: record unused type profile information with type system, propagate and use it.
Reviewed-by: kvn, twisti
duke@435 | 1 | /* |
stefank@2314 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "ci/ciExceptionHandler.hpp" |
stefank@2314 | 27 | #include "ci/ciUtilities.hpp" |
duke@435 | 28 | |
duke@435 | 29 | // ciExceptionHandler |
duke@435 | 30 | // |
duke@435 | 31 | // This class represents an exception handler for a method. |
duke@435 | 32 | |
duke@435 | 33 | // ------------------------------------------------------------------ |
duke@435 | 34 | // ciExceptionHandler::catch_klass |
duke@435 | 35 | // |
duke@435 | 36 | // Get the exception klass that this handler catches. |
duke@435 | 37 | ciInstanceKlass* ciExceptionHandler::catch_klass() { |
twisti@1573 | 38 | VM_ENTRY_MARK; |
duke@435 | 39 | assert(!is_catch_all(), "bad index"); |
duke@435 | 40 | if (_catch_klass == NULL) { |
duke@435 | 41 | bool will_link; |
twisti@1573 | 42 | assert(_loading_klass->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool"); |
twisti@1573 | 43 | constantPoolHandle cpool(_loading_klass->get_instanceKlass()->constants()); |
twisti@1573 | 44 | ciKlass* k = CURRENT_ENV->get_klass_by_index(cpool, |
duke@435 | 45 | _catch_klass_index, |
twisti@1573 | 46 | will_link, |
twisti@1573 | 47 | _loading_klass); |
duke@435 | 48 | if (!will_link && k->is_loaded()) { |
duke@435 | 49 | GUARDED_VM_ENTRY( |
duke@435 | 50 | k = CURRENT_ENV->get_unloaded_klass(_loading_klass, k->name()); |
duke@435 | 51 | ) |
duke@435 | 52 | } |
duke@435 | 53 | _catch_klass = k->as_instance_klass(); |
duke@435 | 54 | } |
duke@435 | 55 | return _catch_klass; |
duke@435 | 56 | } |
duke@435 | 57 | |
duke@435 | 58 | // ------------------------------------------------------------------ |
duke@435 | 59 | // ciExceptionHandler::print() |
duke@435 | 60 | void ciExceptionHandler::print() { |
duke@435 | 61 | tty->print("<ciExceptionHandler start=%d limit=%d" |
duke@435 | 62 | " handler_bci=%d ex_klass_index=%d", |
duke@435 | 63 | start(), limit(), handler_bci(), catch_klass_index()); |
duke@435 | 64 | if (_catch_klass != NULL) { |
duke@435 | 65 | tty->print(" ex_klass="); |
duke@435 | 66 | _catch_klass->print(); |
duke@435 | 67 | } |
duke@435 | 68 | tty->print(">"); |
duke@435 | 69 | } |