Tue, 09 Mar 2010 20:16:19 +0100
6919934: JSR 292 needs to support x86 C1
Summary: This implements JSR 292 support for C1 x86.
Reviewed-by: never, jrose, kvn
duke@435 | 1 | /* |
xdono@1279 | 2 | * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_c2compiler.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | |
duke@435 | 29 | volatile int C2Compiler::_runtimes = uninitialized; |
duke@435 | 30 | |
duke@435 | 31 | // register information defined by ADLC |
duke@435 | 32 | extern const char register_save_policy[]; |
duke@435 | 33 | extern const int register_save_type[]; |
duke@435 | 34 | |
duke@435 | 35 | const char* C2Compiler::retry_no_subsuming_loads() { |
duke@435 | 36 | return "retry without subsuming loads"; |
duke@435 | 37 | } |
kvn@473 | 38 | const char* C2Compiler::retry_no_escape_analysis() { |
kvn@473 | 39 | return "retry without escape analysis"; |
kvn@473 | 40 | } |
duke@435 | 41 | void C2Compiler::initialize_runtime() { |
duke@435 | 42 | |
duke@435 | 43 | // Check assumptions used while running ADLC |
duke@435 | 44 | Compile::adlc_verification(); |
duke@435 | 45 | assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts"); |
duke@435 | 46 | |
duke@435 | 47 | for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) { |
duke@435 | 48 | OptoReg::vm2opto[i] = OptoReg::Bad; |
duke@435 | 49 | } |
duke@435 | 50 | |
duke@435 | 51 | for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) { |
duke@435 | 52 | VMReg r = OptoReg::as_VMReg(i); |
duke@435 | 53 | if (r->is_valid()) { |
duke@435 | 54 | OptoReg::vm2opto[r->value()] = i; |
duke@435 | 55 | } |
duke@435 | 56 | } |
duke@435 | 57 | |
duke@435 | 58 | // Check that runtime and architecture description agree on callee-saved-floats |
duke@435 | 59 | bool callee_saved_floats = false; |
duke@435 | 60 | for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) { |
duke@435 | 61 | // Is there a callee-saved float or double? |
duke@435 | 62 | if( register_save_policy[i] == 'E' /* callee-saved */ && |
duke@435 | 63 | (register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) { |
duke@435 | 64 | callee_saved_floats = true; |
duke@435 | 65 | } |
duke@435 | 66 | } |
duke@435 | 67 | |
duke@435 | 68 | DEBUG_ONLY( Node::init_NodeProperty(); ) |
duke@435 | 69 | |
duke@435 | 70 | Compile::pd_compiler2_init(); |
duke@435 | 71 | |
duke@435 | 72 | CompilerThread* thread = CompilerThread::current(); |
duke@435 | 73 | |
duke@435 | 74 | HandleMark handle_mark(thread); |
duke@435 | 75 | |
duke@435 | 76 | OptoRuntime::generate(thread->env()); |
duke@435 | 77 | |
duke@435 | 78 | } |
duke@435 | 79 | |
duke@435 | 80 | |
duke@435 | 81 | void C2Compiler::initialize() { |
duke@435 | 82 | |
duke@435 | 83 | // This method can only be called once per C2Compiler object |
duke@435 | 84 | // The first compiler thread that gets here will initialize the |
duke@435 | 85 | // small amount of global state (and runtime stubs) that c2 needs. |
duke@435 | 86 | |
duke@435 | 87 | // There is a race possible once at startup and then we're fine |
duke@435 | 88 | |
duke@435 | 89 | // Note that this is being called from a compiler thread not the |
duke@435 | 90 | // main startup thread. |
duke@435 | 91 | |
duke@435 | 92 | if (_runtimes != initialized) { |
duke@435 | 93 | initialize_runtimes( initialize_runtime, &_runtimes); |
duke@435 | 94 | } |
duke@435 | 95 | |
duke@435 | 96 | // Mark this compiler object as ready to roll |
duke@435 | 97 | mark_initialized(); |
duke@435 | 98 | } |
duke@435 | 99 | |
duke@435 | 100 | void C2Compiler::compile_method(ciEnv* env, |
duke@435 | 101 | ciMethod* target, |
duke@435 | 102 | int entry_bci) { |
duke@435 | 103 | if (!is_initialized()) { |
duke@435 | 104 | initialize(); |
duke@435 | 105 | } |
duke@435 | 106 | bool subsume_loads = true; |
kvn@1253 | 107 | bool do_escape_analysis = DoEscapeAnalysis && |
kvn@1253 | 108 | !(env->jvmti_can_hotswap_or_post_breakpoint() || |
kvn@1253 | 109 | env->jvmti_can_examine_or_deopt_anywhere()); |
duke@435 | 110 | while (!env->failing()) { |
duke@435 | 111 | // Attempt to compile while subsuming loads into machine instructions. |
kvn@473 | 112 | Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis); |
duke@435 | 113 | |
duke@435 | 114 | // Check result and retry if appropriate. |
duke@435 | 115 | if (C.failure_reason() != NULL) { |
kvn@473 | 116 | if (C.failure_reason_is(retry_no_subsuming_loads())) { |
duke@435 | 117 | assert(subsume_loads, "must make progress"); |
duke@435 | 118 | subsume_loads = false; |
duke@435 | 119 | continue; // retry |
duke@435 | 120 | } |
kvn@473 | 121 | if (C.failure_reason_is(retry_no_escape_analysis())) { |
kvn@473 | 122 | assert(do_escape_analysis, "must make progress"); |
kvn@473 | 123 | do_escape_analysis = false; |
kvn@473 | 124 | continue; // retry |
kvn@473 | 125 | } |
duke@435 | 126 | // Pass any other failure reason up to the ciEnv. |
duke@435 | 127 | // Note that serious, irreversible failures are already logged |
duke@435 | 128 | // on the ciEnv via env->record_method_not_compilable(). |
duke@435 | 129 | env->record_failure(C.failure_reason()); |
duke@435 | 130 | } |
duke@435 | 131 | |
duke@435 | 132 | // No retry; just break the loop. |
duke@435 | 133 | break; |
duke@435 | 134 | } |
duke@435 | 135 | } |
duke@435 | 136 | |
duke@435 | 137 | |
duke@435 | 138 | void C2Compiler::print_timers() { |
duke@435 | 139 | // do nothing |
duke@435 | 140 | } |