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src/share/vm/ci/ciInstance.hpp@194b8e3a2fc4 (annotated)

src/share/vm/ci/ciInstance.hpp

Wed, 17 Sep 2008 12:59:52 -0700

author

never

date

Wed, 17 Sep 2008 12:59:52 -0700

changeset 802

194b8e3a2fc4

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6384206: Phis which are later unneeded are impairing our ability to inline based on static types
Reviewed-by: rasbold, jrose

duke@435	1	/*
duke@435	2	* Copyright 1999-2005 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// ciInstance
duke@435	26	//
duke@435	27	// This class represents an instanceOop in the HotSpot virtual
duke@435	28	// machine. This is an oop which corresponds to a non-array
duke@435	29	// instance of java.lang.Object.
duke@435	30	class ciInstance : public ciObject {
duke@435	31	CI_PACKAGE_ACCESS
duke@435	32
duke@435	33	protected:
duke@435	34	ciInstance(instanceHandle h_i) : ciObject(h_i) {
duke@435	35	assert(h_i()->is_instance(), "wrong type");
duke@435	36	}
duke@435	37
duke@435	38	ciInstance(ciKlass* klass) : ciObject(klass) {}
duke@435	39
duke@435	40	instanceOop get_instanceOop() { return (instanceOop)get_oop(); }
duke@435	41
duke@435	42	const char* type_string() { return "ciInstance"; }
duke@435	43
duke@435	44	void print_impl(outputStream* st);
duke@435	45
duke@435	46	public:
duke@435	47	// If this object is a java mirror, return the corresponding type.
duke@435	48	// Otherwise, return NULL.
duke@435	49	// (Remember that a java mirror is an instance of java.lang.Class.)
duke@435	50	ciType* java_mirror_type();
duke@435	51
duke@435	52	// What kind of ciObject is this?
duke@435	53	bool is_instance() { return true; }
duke@435	54	bool is_java_object() { return true; }
duke@435	55
duke@435	56	// Constant value of a field.
duke@435	57	ciConstant field_value(ciField* field);
duke@435	58
duke@435	59	// Constant value of a field at the specified offset.
duke@435	60	ciConstant field_value_by_offset(int field_offset);
duke@435	61	};