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src/cpu/sparc/vm/c1_LinearScan_sparc.hpp@2338d41fbd81 (annotated)

src/cpu/sparc/vm/c1_LinearScan_sparc.hpp

Fri, 30 Apr 2010 08:37:24 -0700

author

twisti

date

Fri, 30 Apr 2010 08:37:24 -0700

changeset 1861

2338d41fbd81

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6943304: remove tagged stack interpreter
Reviewed-by: coleenp, never, gbenson

duke@435	1	/*
duke@435	2	* Copyright 2005-2006 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	inline bool LinearScan::is_processed_reg_num(int reg_num) {
duke@435	26	return reg_num < 26 || reg_num > 31;
duke@435	27	}
duke@435	28
duke@435	29	inline int LinearScan::num_physical_regs(BasicType type) {
duke@435	30	// Sparc requires two cpu registers for long
duke@435	31	// and two cpu registers for double
duke@435	32	#ifdef _LP64
duke@435	33	if (type == T_DOUBLE) {
duke@435	34	#else
duke@435	35	if (type == T_DOUBLE || type == T_LONG) {
duke@435	36	#endif
duke@435	37	return 2;
duke@435	38	}
duke@435	39	return 1;
duke@435	40	}
duke@435	41
duke@435	42
duke@435	43	inline bool LinearScan::requires_adjacent_regs(BasicType type) {
duke@435	44	#ifdef _LP64
duke@435	45	return type == T_DOUBLE;
duke@435	46	#else
duke@435	47	return type == T_DOUBLE || type == T_LONG;
duke@435	48	#endif
duke@435	49	}
duke@435	50
duke@435	51	inline bool LinearScan::is_caller_save(int assigned_reg) {
duke@435	52	return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg;
duke@435	53	}
duke@435	54
duke@435	55
duke@435	56	inline void LinearScan::pd_add_temps(LIR_Op* op) {
duke@435	57	// No special case behaviours yet
duke@435	58	}
duke@435	59
duke@435	60
duke@435	61	inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
duke@435	62	if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) {
duke@435	63	assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
duke@435	64	_first_reg = pd_first_callee_saved_reg;
duke@435	65	_last_reg = pd_last_callee_saved_reg;
duke@435	66	return true;
duke@435	67	} else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT) {
duke@435	68	_first_reg = pd_first_cpu_reg;
duke@435	69	_last_reg = pd_last_allocatable_cpu_reg;
duke@435	70	return true;
duke@435	71	}
duke@435	72	return false;
duke@435	73	}