Mon, 23 Jun 2008 14:11:12 -0700
6708714: Optimize long LShift on 32-bits x86
Summary: For small (1-3 bits) left long shifts in 32-bits VM use sets of add+addc instructions instead of shld+shl on new AMD cpus.
Reviewed-by: never
Contributed-by: shrinivas.joshi@amd.com
1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_init.cpp.incl"
28 // Initialization done by VM thread in vm_init_globals()
29 void check_ThreadShadow();
30 void eventlog_init();
31 void mutex_init();
32 void chunkpool_init();
33 void perfMemory_init();
35 // Initialization done by Java thread in init_globals()
36 void management_init();
37 void vtune_init();
38 void bytecodes_init();
39 void classLoader_init();
40 void codeCache_init();
41 void VM_Version_init();
42 void JDK_Version_init();
43 void stubRoutines_init1();
44 jint universe_init(); // dependent on codeCache_init and stubRoutines_init
45 void interpreter_init(); // before any methods loaded
46 void invocationCounter_init(); // before any methods loaded
47 void marksweep_init();
48 void accessFlags_init();
49 void templateTable_init();
50 void InterfaceSupport_init();
51 void universe2_init(); // dependent on codeCache_init and stubRoutines_init
52 void referenceProcessor_init();
53 void jni_handles_init();
54 void vmStructs_init();
56 void vtableStubs_init();
57 void InlineCacheBuffer_init();
58 void compilerOracle_init();
59 void compilationPolicy_init();
62 // Initialization after compiler initialization
63 bool universe_post_init(); // must happen after compiler_init
64 void javaClasses_init(); // must happen after vtable initialization
65 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
67 // Do not disable thread-local-storage, as it is important for some
68 // JNI/JVM/JVMTI functions and signal handlers to work properly
69 // during VM shutdown
70 void perfMemory_exit();
71 void ostream_exit();
73 void vm_init_globals() {
74 check_ThreadShadow();
75 basic_types_init();
76 eventlog_init();
77 mutex_init();
78 chunkpool_init();
79 perfMemory_init();
80 }
83 jint init_globals() {
84 HandleMark hm;
85 management_init();
86 vtune_init();
87 bytecodes_init();
88 classLoader_init();
89 codeCache_init();
90 VM_Version_init();
91 JDK_Version_init();
92 stubRoutines_init1();
93 jint status = universe_init(); // dependent on codeCache_init and stubRoutines_init
94 if (status != JNI_OK)
95 return status;
97 interpreter_init(); // before any methods loaded
98 invocationCounter_init(); // before any methods loaded
99 marksweep_init();
100 accessFlags_init();
101 templateTable_init();
102 InterfaceSupport_init();
103 SharedRuntime::generate_stubs();
104 universe2_init(); // dependent on codeCache_init and stubRoutines_init
105 referenceProcessor_init();
106 jni_handles_init();
107 #ifndef VM_STRUCTS_KERNEL
108 vmStructs_init();
109 #endif // VM_STRUCTS_KERNEL
111 vtableStubs_init();
112 InlineCacheBuffer_init();
113 compilerOracle_init();
114 compilationPolicy_init();
115 VMRegImpl::set_regName();
117 if (!universe_post_init()) {
118 return JNI_ERR;
119 }
120 javaClasses_init(); // must happen after vtable initialization
121 stubRoutines_init2(); // note: StubRoutines need 2-phase init
123 // Although we'd like to, we can't easily do a heap verify
124 // here because the main thread isn't yet a JavaThread, so
125 // its TLAB may not be made parseable from the usual interfaces.
126 if (VerifyBeforeGC && !UseTLAB &&
127 Universe::heap()->total_collections() >= VerifyGCStartAt) {
128 Universe::heap()->prepare_for_verify();
129 Universe::verify(); // make sure we're starting with a clean slate
130 }
132 return JNI_OK;
133 }
136 void exit_globals() {
137 static bool destructorsCalled = false;
138 if (!destructorsCalled) {
139 destructorsCalled = true;
140 perfMemory_exit();
141 if (PrintSafepointStatistics) {
142 // Print the collected safepoint statistics.
143 SafepointSynchronize::print_stat_on_exit();
144 }
145 ostream_exit();
146 }
147 }
150 static bool _init_completed = false;
152 bool is_init_completed() {
153 return _init_completed;
154 }
157 void set_init_completed() {
158 _init_completed = true;
159 }