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src/share/vm/ci/ciSignature.hpp@b2ee5dc63353 (annotated)

src/share/vm/ci/ciSignature.hpp

Wed, 23 Oct 2013 12:40:23 +0200

author

roland

date

Wed, 23 Oct 2013 12:40:23 +0200

changeset 5991

b2ee5dc63353

parent 4313

beebba0acc11

child 6876

710a3c8b516e

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	/*
mikael@4153	2	* Copyright (c) 1999, 2012, 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_CISIGNATURE_HPP
stefank@2314	26	#define SHARE_VM_CI_CISIGNATURE_HPP
stefank@2314	27
stefank@2314	28	#include "ci/ciClassList.hpp"
stefank@2314	29	#include "ci/ciSymbol.hpp"
stefank@2314	30	#include "utilities/globalDefinitions.hpp"
stefank@2314	31	#include "utilities/growableArray.hpp"
stefank@2314	32
duke@435	33	// ciSignature
duke@435	34	//
duke@435	35	// This class represents the signature of a method.
duke@435	36	class ciSignature : public ResourceObj {
duke@435	37	private:
duke@435	38	ciSymbol* _symbol;
duke@435	39	ciKlass* _accessing_klass;
duke@435	40
duke@435	41	GrowableArray<ciType*>* _types;
twisti@3969	42	int _size; // number of stack slots required for arguments
twisti@3969	43	int _count; // number of parameter types in the signature
duke@435	44
duke@435	45	friend class ciMethod;
twisti@3969	46	friend class ciBytecodeStream;
twisti@3197	47	friend class ciObjectFactory;
duke@435	48
jrose@2982	49	ciSignature(ciKlass* accessing_klass, constantPoolHandle cpool, ciSymbol* signature);
twisti@4133	50	ciSignature(ciKlass* accessing_klass, ciSymbol* signature, ciMethodType* method_type);
duke@435	51
duke@435	52	void get_all_klasses();
duke@435	53
coleenp@2497	54	Symbol* get_symbol() const { return _symbol->get_symbol(); }
duke@435	55
duke@435	56	public:
duke@435	57	ciSymbol* as_symbol() const { return _symbol; }
twisti@3197	58	ciKlass* accessing_klass() const { return _accessing_klass; }
duke@435	59
twisti@4313	60	ciType* return_type() const;
twisti@4313	61	ciType* type_at(int index) const;
duke@435	62
duke@435	63	int size() const { return _size; }
duke@435	64	int count() const { return _count; }
duke@435	65
twisti@4313	66	int arg_size_for_bc(Bytecodes::Code bc) { return size() + (Bytecodes::has_receiver(bc) ? 1 : 0); }
twisti@4313	67
twisti@3197	68	bool equals(ciSignature* that);
twisti@3197	69
duke@435	70	void print_signature();
duke@435	71	void print();
duke@435	72	};
stefank@2314	73
stefank@2314	74	#endif // SHARE_VM_CI_CISIGNATURE_HPP