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src/cpu/sparc/vm/vm_version_sparc.hpp@ac637b7220d1 (annotated)

src/cpu/sparc/vm/vm_version_sparc.hpp

Tue, 30 Nov 2010 23:23:40 -0800

author

iveresov

date

Tue, 30 Nov 2010 23:23:40 -0800

changeset 2344

ac637b7220d1

parent 2314

f95d63e2154a

child 2350

2f644f85485d

permissions

-rw-r--r--

6985015: C1 needs to support compressed oops
Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.
Reviewed-by: twisti, kvn, never, phh

duke@435	1	/*
kvn@2269	2	* Copyright (c) 1997, 2010, 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,
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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 CPU_SPARC_VM_VM_VERSION_SPARC_HPP
stefank@2314	26	#define CPU_SPARC_VM_VM_VERSION_SPARC_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/globals_extension.hpp"
stefank@2314	29	#include "runtime/vm_version.hpp"
stefank@2314	30
duke@435	31	class VM_Version: public Abstract_VM_Version {
duke@435	32	protected:
duke@435	33	enum Feature_Flag {
twisti@1076	34	v8_instructions = 0,
twisti@1076	35	hardware_mul32 = 1,
twisti@1076	36	hardware_div32 = 2,
twisti@1076	37	hardware_fsmuld = 3,
twisti@1078	38	hardware_popc = 4,
twisti@1078	39	v9_instructions = 5,
twisti@1078	40	vis1_instructions = 6,
twisti@1078	41	vis2_instructions = 7,
kvn@2269	42	sun4v_instructions = 8,
kvn@2269	43	blk_init_instructions = 9,
kvn@2269	44	fmaf_instructions = 10
duke@435	45	};
duke@435	46
duke@435	47	enum Feature_Flag_Set {
twisti@1076	48	unknown_m = 0,
twisti@1076	49	all_features_m = -1,
duke@435	50
twisti@1076	51	v8_instructions_m = 1 << v8_instructions,
twisti@1076	52	hardware_mul32_m = 1 << hardware_mul32,
twisti@1076	53	hardware_div32_m = 1 << hardware_div32,
twisti@1076	54	hardware_fsmuld_m = 1 << hardware_fsmuld,
twisti@1078	55	hardware_popc_m = 1 << hardware_popc,
twisti@1076	56	v9_instructions_m = 1 << v9_instructions,
twisti@1076	57	vis1_instructions_m = 1 << vis1_instructions,
twisti@1076	58	vis2_instructions_m = 1 << vis2_instructions,
twisti@1076	59	sun4v_m = 1 << sun4v_instructions,
kvn@2269	60	blk_init_instructions_m = 1 << blk_init_instructions,
kvn@2269	61	fmaf_instructions_m = 1 << fmaf_instructions,
duke@435	62
twisti@1076	63	generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
twisti@1076	64	generic_v9_m = generic_v8_m | v9_instructions_m,
twisti@1076	65	ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m,
duke@435	66
duke@435	67	// Temporary until we have something more accurate
twisti@1076	68	niagara1_unique_m = sun4v_m,
twisti@1076	69	niagara1_m = generic_v9_m | niagara1_unique_m
duke@435	70	};
duke@435	71
duke@435	72	static int _features;
duke@435	73	static const char* _features_str;
duke@435	74
duke@435	75	static void print_features();
duke@435	76	static int determine_features();
duke@435	77	static int platform_features(int features);
duke@435	78
twisti@1076	79	static bool is_niagara1(int features) { return (features & sun4v_m) != 0; }
kvn@2269	80	static bool is_sparc64(int features) { return (features & fmaf_instructions_m) != 0; }
duke@435	81
jmasa@445	82	static int maximum_niagara1_processor_count() { return 32; }
jmasa@445	83	// Returns true if the platform is in the niagara line and
jmasa@445	84	// newer than the niagara1.
jmasa@445	85	static bool is_niagara1_plus();
jmasa@445	86
duke@435	87	public:
duke@435	88	// Initialization
duke@435	89	static void initialize();
duke@435	90
duke@435	91	// Instruction support
duke@435	92	static bool has_v8() { return (_features & v8_instructions_m) != 0; }
duke@435	93	static bool has_v9() { return (_features & v9_instructions_m) != 0; }
twisti@1076	94	static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; }
twisti@1076	95	static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; }
duke@435	96	static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
twisti@1078	97	static bool has_hardware_popc() { return (_features & hardware_popc_m) != 0; }
duke@435	98	static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
duke@435	99	static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
kvn@2269	100	static bool has_blk_init() { return (_features & blk_init_instructions_m) != 0; }
duke@435	101
duke@435	102	static bool supports_compare_and_exchange()
duke@435	103	{ return has_v9(); }
duke@435	104
duke@435	105	static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; }
duke@435	106	static bool is_sun4v() { return (_features & sun4v_m) != 0; }
duke@435	107	static bool is_niagara1() { return is_niagara1(_features); }
kvn@2269	108	static bool is_sparc64() { return is_sparc64(_features); }
duke@435	109
duke@435	110	static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); }
kvn@2269	111	static bool has_fast_idiv() { return is_niagara1_plus() || is_sparc64(); }
duke@435	112
duke@435	113	static const char* cpu_features() { return _features_str; }
duke@435	114
duke@435	115	static intx L1_data_cache_line_size() {
duke@435	116	return 64; // default prefetch block size on sparc
duke@435	117	}
duke@435	118
duke@435	119	// Prefetch
duke@435	120	static intx prefetch_copy_interval_in_bytes() {
duke@435	121	intx interval = PrefetchCopyIntervalInBytes;
duke@435	122	return interval >= 0 ? interval : (has_v9() ? 512 : 0);
duke@435	123	}
duke@435	124	static intx prefetch_scan_interval_in_bytes() {
duke@435	125	intx interval = PrefetchScanIntervalInBytes;
duke@435	126	return interval >= 0 ? interval : (has_v9() ? 512 : 0);
duke@435	127	}
duke@435	128	static intx prefetch_fields_ahead() {
duke@435	129	intx count = PrefetchFieldsAhead;
duke@435	130	return count >= 0 ? count : (is_ultra3() ? 1 : 0);
duke@435	131	}
duke@435	132
duke@435	133	static intx allocate_prefetch_distance() {
duke@435	134	// This method should be called before allocate_prefetch_style().
duke@435	135	intx count = AllocatePrefetchDistance;
duke@435	136	if (count < 0) { // default is not defined ?
duke@435	137	count = 512;
duke@435	138	}
duke@435	139	return count;
duke@435	140	}
duke@435	141	static intx allocate_prefetch_style() {
duke@435	142	assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
duke@435	143	// Return 0 if AllocatePrefetchDistance was not defined.
duke@435	144	return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0;
duke@435	145	}
duke@435	146
duke@435	147	// Legacy
duke@435	148	static bool v8_instructions_work() { return has_v8() && !has_v9(); }
duke@435	149	static bool v9_instructions_work() { return has_v9(); }
duke@435	150
duke@435	151	// Assembler testing
duke@435	152	static void allow_all();
duke@435	153	static void revert();
duke@435	154
duke@435	155	// Override the Abstract_VM_Version implementation.
duke@435	156	static uint page_size_count() { return is_sun4v() ? 4 : 2; }
jmasa@445	157
jmasa@445	158	// Calculates the number of parallel threads
jmasa@445	159	static unsigned int calc_parallel_worker_threads();
duke@435	160	};
stefank@2314	161
stefank@2314	162	#endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP