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src/cpu/zero/vm/register_zero.hpp@c09ee209b65c (annotated)

src/cpu/zero/vm/register_zero.hpp

Fri, 12 Feb 2010 10:34:11 -0800

author

kvn

date

Fri, 12 Feb 2010 10:34:11 -0800

changeset 1691

c09ee209b65c

parent 1445

354d3184f6b2

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6926048: Improve Zero performance
Summary: Make Zero figure out result types in a similar way to C++ interpreter implementation.
Reviewed-by: kvn
Contributed-by: gbenson@redhat.com

never@1445	1	/*
never@1445	2	* Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved.
never@1445	3	* Copyright 2007 Red Hat, Inc.
never@1445	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445	5	*
never@1445	6	* This code is free software; you can redistribute it and/or modify it
never@1445	7	* under the terms of the GNU General Public License version 2 only, as
never@1445	8	* published by the Free Software Foundation.
never@1445	9	*
never@1445	10	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1445	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445	13	* version 2 for more details (a copy is included in the LICENSE file that
never@1445	14	* accompanied this code).
never@1445	15	*
never@1445	16	* You should have received a copy of the GNU General Public License version
never@1445	17	* 2 along with this work; if not, write to the Free Software Foundation,
never@1445	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445	19	*
never@1445	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
never@1445	21	* CA 95054 USA or visit www.sun.com if you need additional information or
never@1445	22	* have any questions.
never@1445	23	*
never@1445	24	*/
never@1445	25
never@1445	26	class VMRegImpl;
never@1445	27	typedef VMRegImpl* VMReg;
never@1445	28
never@1445	29	// Use Register as shortcut
never@1445	30	class RegisterImpl;
never@1445	31	typedef RegisterImpl* Register;
never@1445	32
never@1445	33	inline Register as_Register(int encoding) {
never@1445	34	return (Register)(intptr_t) encoding;
never@1445	35	}
never@1445	36
never@1445	37	// The implementation of integer registers for the zero architecture
never@1445	38	class RegisterImpl : public AbstractRegisterImpl {
never@1445	39	public:
never@1445	40	enum {
never@1445	41	number_of_registers = 0
never@1445	42	};
never@1445	43
never@1445	44	// construction
never@1445	45	inline friend Register as_Register(int encoding);
never@1445	46	VMReg as_VMReg();
never@1445	47
never@1445	48	// derived registers, offsets, and addresses
never@1445	49	Register successor() const {
never@1445	50	return as_Register(encoding() + 1);
never@1445	51	}
never@1445	52
never@1445	53	// accessors
never@1445	54	int encoding() const {
never@1445	55	assert(is_valid(), "invalid register");
never@1445	56	return (intptr_t)this;
never@1445	57	}
never@1445	58	bool is_valid() const {
never@1445	59	return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;
never@1445	60	}
never@1445	61	const char* name() const;
never@1445	62	};
never@1445	63
never@1445	64	// Use FloatRegister as shortcut
never@1445	65	class FloatRegisterImpl;
never@1445	66	typedef FloatRegisterImpl* FloatRegister;
never@1445	67
never@1445	68	inline FloatRegister as_FloatRegister(int encoding) {
never@1445	69	return (FloatRegister)(intptr_t) encoding;
never@1445	70	}
never@1445	71
never@1445	72	// The implementation of floating point registers for the zero architecture
never@1445	73	class FloatRegisterImpl : public AbstractRegisterImpl {
never@1445	74	public:
never@1445	75	enum {
never@1445	76	number_of_registers = 0
never@1445	77	};
never@1445	78
never@1445	79	// construction
never@1445	80	inline friend FloatRegister as_FloatRegister(int encoding);
never@1445	81	VMReg as_VMReg();
never@1445	82
never@1445	83	// derived registers, offsets, and addresses
never@1445	84	FloatRegister successor() const {
never@1445	85	return as_FloatRegister(encoding() + 1);
never@1445	86	}
never@1445	87
never@1445	88	// accessors
never@1445	89	int encoding() const {
never@1445	90	assert(is_valid(), "invalid register");
never@1445	91	return (intptr_t)this;
never@1445	92	}
never@1445	93	bool is_valid() const {
never@1445	94	return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;
never@1445	95	}
never@1445	96	const char* name() const;
never@1445	97	};
never@1445	98
never@1445	99	class ConcreteRegisterImpl : public AbstractRegisterImpl {
never@1445	100	public:
never@1445	101	enum {
never@1445	102	number_of_registers = RegisterImpl::number_of_registers +
never@1445	103	FloatRegisterImpl::number_of_registers
never@1445	104	};
never@1445	105
never@1445	106	static const int max_gpr;
never@1445	107	static const int max_fpr;
never@1445	108	};
never@1445	109
never@1445	110	CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1));