| /* |
| * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "opto/c2compiler.hpp" |
| #include "opto/runtime.hpp" |
| #if defined AD_MD_HPP |
| # include AD_MD_HPP |
| #elif defined TARGET_ARCH_MODEL_x86_32 |
| # include "adfiles/ad_x86_32.hpp" |
| #elif defined TARGET_ARCH_MODEL_x86_64 |
| # include "adfiles/ad_x86_64.hpp" |
| #elif defined TARGET_ARCH_MODEL_sparc |
| # include "adfiles/ad_sparc.hpp" |
| #elif defined TARGET_ARCH_MODEL_zero |
| # include "adfiles/ad_zero.hpp" |
| #elif defined TARGET_ARCH_MODEL_ppc_64 |
| # include "adfiles/ad_ppc_64.hpp" |
| #endif |
| |
| // register information defined by ADLC |
| extern const char register_save_policy[]; |
| extern const int register_save_type[]; |
| |
| const char* C2Compiler::retry_no_subsuming_loads() { |
| return "retry without subsuming loads"; |
| } |
| const char* C2Compiler::retry_no_escape_analysis() { |
| return "retry without escape analysis"; |
| } |
| const char* C2Compiler::retry_class_loading_during_parsing() { |
| return "retry class loading during parsing"; |
| } |
| bool C2Compiler::init_c2_runtime() { |
| |
| // Check assumptions used while running ADLC |
| Compile::adlc_verification(); |
| assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts"); |
| |
| for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) { |
| OptoReg::vm2opto[i] = OptoReg::Bad; |
| } |
| |
| for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) { |
| VMReg r = OptoReg::as_VMReg(i); |
| if (r->is_valid()) { |
| OptoReg::vm2opto[r->value()] = i; |
| } |
| } |
| |
| // Check that runtime and architecture description agree on callee-saved-floats |
| bool callee_saved_floats = false; |
| for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) { |
| // Is there a callee-saved float or double? |
| if( register_save_policy[i] == 'E' /* callee-saved */ && |
| (register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) { |
| callee_saved_floats = true; |
| } |
| } |
| |
| DEBUG_ONLY( Node::init_NodeProperty(); ) |
| |
| Compile::pd_compiler2_init(); |
| |
| CompilerThread* thread = CompilerThread::current(); |
| |
| HandleMark handle_mark(thread); |
| return OptoRuntime::generate(thread->env()); |
| } |
| |
| |
| void C2Compiler::initialize() { |
| // The first compiler thread that gets here will initialize the |
| // small amount of global state (and runtime stubs) that C2 needs. |
| |
| // There is a race possible once at startup and then we're fine |
| |
| // Note that this is being called from a compiler thread not the |
| // main startup thread. |
| if (should_perform_init()) { |
| bool successful = C2Compiler::init_c2_runtime(); |
| int new_state = (successful) ? initialized : failed; |
| set_state(new_state); |
| } |
| } |
| |
| void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci) { |
| assert(is_initialized(), "Compiler thread must be initialized"); |
| |
| bool subsume_loads = SubsumeLoads; |
| bool do_escape_analysis = DoEscapeAnalysis && !env->jvmti_can_access_local_variables(); |
| bool eliminate_boxing = EliminateAutoBox; |
| while (!env->failing()) { |
| // Attempt to compile while subsuming loads into machine instructions. |
| Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing); |
| |
| |
| // Check result and retry if appropriate. |
| if (C.failure_reason() != NULL) { |
| if (C.failure_reason_is(retry_class_loading_during_parsing())) { |
| env->record_failure(C.failure_reason()); |
| continue; // retry |
| } |
| if (C.failure_reason_is(retry_no_subsuming_loads())) { |
| assert(subsume_loads, "must make progress"); |
| subsume_loads = false; |
| continue; // retry |
| } |
| if (C.failure_reason_is(retry_no_escape_analysis())) { |
| assert(do_escape_analysis, "must make progress"); |
| do_escape_analysis = false; |
| continue; // retry |
| } |
| if (C.has_boxed_value()) { |
| // Recompile without boxing elimination regardless failure reason. |
| assert(eliminate_boxing, "must make progress"); |
| eliminate_boxing = false; |
| continue; // retry |
| } |
| // Pass any other failure reason up to the ciEnv. |
| // Note that serious, irreversible failures are already logged |
| // on the ciEnv via env->record_method_not_compilable(). |
| env->record_failure(C.failure_reason()); |
| } |
| if (StressRecompilation) { |
| if (subsume_loads) { |
| subsume_loads = false; |
| continue; // retry |
| } |
| if (do_escape_analysis) { |
| do_escape_analysis = false; |
| continue; // retry |
| } |
| } |
| |
| // No retry; just break the loop. |
| break; |
| } |
| } |
| |
| |
| void C2Compiler::print_timers() { |
| // do nothing |
| } |