Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/c2compiler.cpp
src/share/vm/opto/c2compiler.cpp
- changeset 435
- a61af66fc99e
- child 473
- b789bcaf2dd9
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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 } |
