Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/ci/ciArray.hpp@b2ee5dc63353 (annotated)
src/share/vm/ci/ciArray.hpp
Wed, 23 Oct 2013 12:40:23 +0200
- author
- roland
- date
- Wed, 23 Oct 2013 12:40:23 +0200
- changeset 5991
- b2ee5dc63353
- parent 5658
- edb5ab0f3fe5
- child 6198
- 55fb97c4c58d
- permissions
- -rw-r--r--
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 | #ifndef SHARE_VM_CI_CIARRAY_HPP |
| stefank@2314 | 26 | #define SHARE_VM_CI_CIARRAY_HPP |
| stefank@2314 | 27 | |
| vlivanov@5658 | 28 | #include "ci/ciArrayKlass.hpp" |
| vlivanov@5658 | 29 | #include "ci/ciConstant.hpp" |
| stefank@2314 | 30 | #include "ci/ciObject.hpp" |
| stefank@2314 | 31 | #include "oops/arrayOop.hpp" |
| stefank@2314 | 32 | #include "oops/objArrayOop.hpp" |
| stefank@2314 | 33 | #include "oops/typeArrayOop.hpp" |
| stefank@2314 | 34 | |
| duke@435 | 35 | // ciArray |
| duke@435 | 36 | // |
| duke@435 | 37 | // This class represents an arrayOop in the HotSpot virtual |
| duke@435 | 38 | // machine. |
| duke@435 | 39 | class ciArray : public ciObject { |
| duke@435 | 40 | private: |
| duke@435 | 41 | int _length; |
| duke@435 | 42 | |
| duke@435 | 43 | protected: |
| duke@435 | 44 | ciArray( arrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {} |
| duke@435 | 45 | ciArray( objArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {} |
| duke@435 | 46 | ciArray(typeArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {} |
| duke@435 | 47 | |
| duke@435 | 48 | ciArray(ciKlass* klass, int len) : ciObject(klass), _length(len) {} |
| duke@435 | 49 | |
| vlivanov@5658 | 50 | arrayOop get_arrayOop() const { return (arrayOop)get_oop(); } |
| duke@435 | 51 | |
| duke@435 | 52 | const char* type_string() { return "ciArray"; } |
| duke@435 | 53 | |
| duke@435 | 54 | void print_impl(outputStream* st); |
| duke@435 | 55 | |
| vlivanov@5658 | 56 | ciConstant element_value_impl(BasicType elembt, arrayOop ary, int index); |
| vlivanov@5658 | 57 | |
| duke@435 | 58 | public: |
| duke@435 | 59 | int length() { return _length; } |
| duke@435 | 60 | |
| vlivanov@5658 | 61 | // Convenience routines. |
| vlivanov@5658 | 62 | ciArrayKlass* array_type() { return klass()->as_array_klass(); } |
| vlivanov@5658 | 63 | ciType* element_type() { return array_type()->element_type(); } |
| vlivanov@5658 | 64 | BasicType element_basic_type() { return element_type()->basic_type(); } |
| vlivanov@5658 | 65 | |
| vlivanov@5658 | 66 | // Current value of an element. |
| vlivanov@5658 | 67 | // Returns T_ILLEGAL if there is no element at the given index. |
| vlivanov@5658 | 68 | ciConstant element_value(int index); |
| vlivanov@5658 | 69 | |
| vlivanov@5658 | 70 | // Current value of an element at the specified offset. |
| vlivanov@5658 | 71 | // Returns T_ILLEGAL if there is no element at the given offset. |
| vlivanov@5658 | 72 | ciConstant element_value_by_offset(intptr_t element_offset); |
| vlivanov@5658 | 73 | |
| duke@435 | 74 | // What kind of ciObject is this? |
| duke@435 | 75 | bool is_array() { return true; } |
| duke@435 | 76 | bool is_java_object() { return true; } |
| duke@435 | 77 | }; |
| stefank@2314 | 78 | |
| stefank@2314 | 79 | #endif // SHARE_VM_CI_CIARRAY_HPP |
