Mercurial > hg > graal-jvmci-8
comparison src/share/vm/opto/c2compiler.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | b789bcaf2dd9 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1999-2007 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 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_c2compiler.cpp.incl" | |
27 | |
28 | |
29 volatile int C2Compiler::_runtimes = uninitialized; | |
30 | |
31 // register information defined by ADLC | |
32 extern const char register_save_policy[]; | |
33 extern const int register_save_type[]; | |
34 | |
35 const char* C2Compiler::retry_no_subsuming_loads() { | |
36 return "retry without subsuming loads"; | |
37 } | |
38 void C2Compiler::initialize_runtime() { | |
39 | |
40 // Check assumptions used while running ADLC | |
41 Compile::adlc_verification(); | |
42 assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts"); | |
43 | |
44 for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) { | |
45 OptoReg::vm2opto[i] = OptoReg::Bad; | |
46 } | |
47 | |
48 for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) { | |
49 VMReg r = OptoReg::as_VMReg(i); | |
50 if (r->is_valid()) { | |
51 OptoReg::vm2opto[r->value()] = i; | |
52 } | |
53 } | |
54 | |
55 // Check that runtime and architecture description agree on callee-saved-floats | |
56 bool callee_saved_floats = false; | |
57 for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) { | |
58 // Is there a callee-saved float or double? | |
59 if( register_save_policy[i] == 'E' /* callee-saved */ && | |
60 (register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) { | |
61 callee_saved_floats = true; | |
62 } | |
63 } | |
64 | |
65 DEBUG_ONLY( Node::init_NodeProperty(); ) | |
66 | |
67 Compile::pd_compiler2_init(); | |
68 | |
69 CompilerThread* thread = CompilerThread::current(); | |
70 | |
71 HandleMark handle_mark(thread); | |
72 | |
73 OptoRuntime::generate(thread->env()); | |
74 | |
75 } | |
76 | |
77 | |
78 void C2Compiler::initialize() { | |
79 | |
80 // This method can only be called once per C2Compiler object | |
81 // The first compiler thread that gets here will initialize the | |
82 // small amount of global state (and runtime stubs) that c2 needs. | |
83 | |
84 // There is a race possible once at startup and then we're fine | |
85 | |
86 // Note that this is being called from a compiler thread not the | |
87 // main startup thread. | |
88 | |
89 if (_runtimes != initialized) { | |
90 initialize_runtimes( initialize_runtime, &_runtimes); | |
91 } | |
92 | |
93 // Mark this compiler object as ready to roll | |
94 mark_initialized(); | |
95 } | |
96 | |
97 void C2Compiler::compile_method(ciEnv* env, | |
98 ciMethod* target, | |
99 int entry_bci) { | |
100 if (!is_initialized()) { | |
101 initialize(); | |
102 } | |
103 bool subsume_loads = true; | |
104 while (!env->failing()) { | |
105 // Attempt to compile while subsuming loads into machine instructions. | |
106 Compile C(env, this, target, entry_bci, subsume_loads); | |
107 | |
108 // Check result and retry if appropriate. | |
109 if (C.failure_reason() != NULL) { | |
110 if (C.failure_reason_is(retry_no_subsuming_loads())) { | |
111 assert(subsume_loads, "must make progress"); | |
112 subsume_loads = false; | |
113 continue; // retry | |
114 } | |
115 // Pass any other failure reason up to the ciEnv. | |
116 // Note that serious, irreversible failures are already logged | |
117 // on the ciEnv via env->record_method_not_compilable(). | |
118 env->record_failure(C.failure_reason()); | |
119 } | |
120 | |
121 // No retry; just break the loop. | |
122 break; | |
123 } | |
124 } | |
125 | |
126 | |
127 void C2Compiler::print_timers() { | |
128 // do nothing | |
129 } |