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src/cpu/sparc/vm/c1_LinearScan_sparc.hpp@f90c822e73f8 (annotated)

src/cpu/sparc/vm/c1_LinearScan_sparc.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP
aoqi@0	26	#define CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP
aoqi@0	27
aoqi@0	28	inline bool LinearScan::is_processed_reg_num(int reg_num) {
aoqi@0	29	return reg_num < 26 || reg_num > 31;
aoqi@0	30	}
aoqi@0	31
aoqi@0	32	inline int LinearScan::num_physical_regs(BasicType type) {
aoqi@0	33	// Sparc requires two cpu registers for long
aoqi@0	34	// and two cpu registers for double
aoqi@0	35	#ifdef _LP64
aoqi@0	36	if (type == T_DOUBLE) {
aoqi@0	37	#else
aoqi@0	38	if (type == T_DOUBLE || type == T_LONG) {
aoqi@0	39	#endif
aoqi@0	40	return 2;
aoqi@0	41	}
aoqi@0	42	return 1;
aoqi@0	43	}
aoqi@0	44
aoqi@0	45
aoqi@0	46	inline bool LinearScan::requires_adjacent_regs(BasicType type) {
aoqi@0	47	#ifdef _LP64
aoqi@0	48	return type == T_DOUBLE;
aoqi@0	49	#else
aoqi@0	50	return type == T_DOUBLE || type == T_LONG;
aoqi@0	51	#endif
aoqi@0	52	}
aoqi@0	53
aoqi@0	54	inline bool LinearScan::is_caller_save(int assigned_reg) {
aoqi@0	55	return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg;
aoqi@0	56	}
aoqi@0	57
aoqi@0	58
aoqi@0	59	inline void LinearScan::pd_add_temps(LIR_Op* op) {
aoqi@0	60	// No special case behaviours yet
aoqi@0	61	}
aoqi@0	62
aoqi@0	63
aoqi@0	64	inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
aoqi@0	65	if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) {
aoqi@0	66	assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
aoqi@0	67	_first_reg = pd_first_callee_saved_reg;
aoqi@0	68	_last_reg = pd_last_callee_saved_reg;
aoqi@0	69	return true;
aoqi@0	70	} else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT || cur->type() == T_ADDRESS || cur->type() == T_METADATA) {
aoqi@0	71	_first_reg = pd_first_cpu_reg;
aoqi@0	72	_last_reg = pd_last_allocatable_cpu_reg;
aoqi@0	73	return true;
aoqi@0	74	}
aoqi@0	75	return false;
aoqi@0	76	}
aoqi@0	77
aoqi@0	78	#endif // CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP