duke@435: /*
xdono@631:  * Copyright 1999-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: #include "incls/_precompiled.incl"
duke@435: #include "incls/_c2compiler.cpp.incl"
duke@435: 
duke@435: 
duke@435: volatile int C2Compiler::_runtimes = uninitialized;
duke@435: 
duke@435: // register information defined by ADLC
duke@435: extern const char register_save_policy[];
duke@435: extern const int  register_save_type[];
duke@435: 
duke@435: const char* C2Compiler::retry_no_subsuming_loads() {
duke@435:   return "retry without subsuming loads";
duke@435: }
kvn@473: const char* C2Compiler::retry_no_escape_analysis() {
kvn@473:   return "retry without escape analysis";
kvn@473: }
duke@435: void C2Compiler::initialize_runtime() {
duke@435: 
duke@435:   // Check assumptions used while running ADLC
duke@435:   Compile::adlc_verification();
duke@435:   assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
duke@435: 
duke@435:   for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
duke@435:       OptoReg::vm2opto[i] = OptoReg::Bad;
duke@435:   }
duke@435: 
duke@435:   for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
duke@435:     VMReg r = OptoReg::as_VMReg(i);
duke@435:     if (r->is_valid()) {
duke@435:       OptoReg::vm2opto[r->value()] = i;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   // Check that runtime and architecture description agree on callee-saved-floats
duke@435:   bool callee_saved_floats = false;
duke@435:   for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) {
duke@435:     // Is there a callee-saved float or double?
duke@435:     if( register_save_policy[i] == 'E' /* callee-saved */ &&
duke@435:        (register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) {
duke@435:       callee_saved_floats = true;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   DEBUG_ONLY( Node::init_NodeProperty(); )
duke@435: 
duke@435:   Compile::pd_compiler2_init();
duke@435: 
duke@435:   CompilerThread* thread = CompilerThread::current();
duke@435: 
duke@435:   HandleMark  handle_mark(thread);
duke@435: 
duke@435:   OptoRuntime::generate(thread->env());
duke@435: 
duke@435: }
duke@435: 
duke@435: 
duke@435: void C2Compiler::initialize() {
duke@435: 
duke@435:   // This method can only be called once per C2Compiler object
duke@435:   // The first compiler thread that gets here will initialize the
duke@435:   // small amount of global state (and runtime stubs) that c2 needs.
duke@435: 
duke@435:   // There is a race possible once at startup and then we're fine
duke@435: 
duke@435:   // Note that this is being called from a compiler thread not the
duke@435:   // main startup thread.
duke@435: 
duke@435:   if (_runtimes != initialized) {
duke@435:     initialize_runtimes( initialize_runtime, &_runtimes);
duke@435:   }
duke@435: 
duke@435:   // Mark this compiler object as ready to roll
duke@435:   mark_initialized();
duke@435: }
duke@435: 
duke@435: void C2Compiler::compile_method(ciEnv* env,
duke@435:                                 ciMethod* target,
duke@435:                                 int entry_bci) {
duke@435:   if (!is_initialized()) {
duke@435:     initialize();
duke@435:   }
duke@435:   bool subsume_loads = true;
kvn@473:   bool do_escape_analysis = DoEscapeAnalysis;
duke@435:   while (!env->failing()) {
duke@435:     // Attempt to compile while subsuming loads into machine instructions.
kvn@473:     Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis);
duke@435: 
duke@435:     // Check result and retry if appropriate.
duke@435:     if (C.failure_reason() != NULL) {
kvn@473:       if (C.failure_reason_is(retry_no_subsuming_loads())) {
duke@435:         assert(subsume_loads, "must make progress");
duke@435:         subsume_loads = false;
duke@435:         continue;  // retry
duke@435:       }
kvn@473:       if (C.failure_reason_is(retry_no_escape_analysis())) {
kvn@473:         assert(do_escape_analysis, "must make progress");
kvn@473:         do_escape_analysis = false;
kvn@473:         continue;  // retry
kvn@473:       }
duke@435:       // Pass any other failure reason up to the ciEnv.
duke@435:       // Note that serious, irreversible failures are already logged
duke@435:       // on the ciEnv via env->record_method_not_compilable().
duke@435:       env->record_failure(C.failure_reason());
duke@435:     }
duke@435: 
duke@435:     // No retry; just break the loop.
duke@435:     break;
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void C2Compiler::print_timers() {
duke@435:   // do nothing
duke@435: }