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src/share/vm/opto/c2compiler.cpp@469216acdb28 (annotated)

src/share/vm/opto/c2compiler.cpp

Thu, 10 Oct 2013 15:44:12 +0200

author

anoll

date

Thu, 10 Oct 2013 15:44:12 +0200

changeset 5919

469216acdb28

parent 5110

6f3fd5150b67

child 6198

55fb97c4c58d

child 6472

2b8e28fdf503

permissions

-rw-r--r--

8023014: CodeSweeperSweepNoFlushTest.java fails with HS crash
Summary: Ensure ensure correct initialization of compiler runtime
Reviewed-by: kvn, twisti

duke@435	1	/*
trims@2708	2	* Copyright (c) 1999, 2011, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "opto/c2compiler.hpp"
stefank@2314	27	#include "opto/runtime.hpp"
stefank@2314	28	#ifdef TARGET_ARCH_MODEL_x86_32
stefank@2314	29	# include "adfiles/ad_x86_32.hpp"
stefank@2314	30	#endif
stefank@2314	31	#ifdef TARGET_ARCH_MODEL_x86_64
stefank@2314	32	# include "adfiles/ad_x86_64.hpp"
stefank@2314	33	#endif
stefank@2314	34	#ifdef TARGET_ARCH_MODEL_sparc
stefank@2314	35	# include "adfiles/ad_sparc.hpp"
stefank@2314	36	#endif
stefank@2314	37	#ifdef TARGET_ARCH_MODEL_zero
stefank@2314	38	# include "adfiles/ad_zero.hpp"
stefank@2314	39	#endif
bobv@2508	40	#ifdef TARGET_ARCH_MODEL_arm
bobv@2508	41	# include "adfiles/ad_arm.hpp"
bobv@2508	42	#endif
bobv@2508	43	#ifdef TARGET_ARCH_MODEL_ppc
bobv@2508	44	# include "adfiles/ad_ppc.hpp"
bobv@2508	45	#endif
duke@435	46
duke@435	47	// register information defined by ADLC
duke@435	48	extern const char register_save_policy[];
duke@435	49	extern const int register_save_type[];
duke@435	50
duke@435	51	const char* C2Compiler::retry_no_subsuming_loads() {
duke@435	52	return "retry without subsuming loads";
duke@435	53	}
kvn@473	54	const char* C2Compiler::retry_no_escape_analysis() {
kvn@473	55	return "retry without escape analysis";
kvn@473	56	}
anoll@5919	57	bool C2Compiler::init_c2_runtime() {
duke@435	58
duke@435	59	// Check assumptions used while running ADLC
duke@435	60	Compile::adlc_verification();
duke@435	61	assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
duke@435	62
duke@435	63	for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
duke@435	64	OptoReg::vm2opto[i] = OptoReg::Bad;
duke@435	65	}
duke@435	66
duke@435	67	for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
duke@435	68	VMReg r = OptoReg::as_VMReg(i);
duke@435	69	if (r->is_valid()) {
duke@435	70	OptoReg::vm2opto[r->value()] = i;
duke@435	71	}
duke@435	72	}
duke@435	73
duke@435	74	// Check that runtime and architecture description agree on callee-saved-floats
duke@435	75	bool callee_saved_floats = false;
duke@435	76	for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) {
duke@435	77	// Is there a callee-saved float or double?
duke@435	78	if( register_save_policy[i] == 'E' /* callee-saved */ &&
duke@435	79	(register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) {
duke@435	80	callee_saved_floats = true;
duke@435	81	}
duke@435	82	}
duke@435	83
duke@435	84	DEBUG_ONLY( Node::init_NodeProperty(); )
duke@435	85
duke@435	86	Compile::pd_compiler2_init();
duke@435	87
duke@435	88	CompilerThread* thread = CompilerThread::current();
duke@435	89
anoll@5919	90	HandleMark handle_mark(thread);
anoll@5919	91	return OptoRuntime::generate(thread->env());
duke@435	92	}
duke@435	93
duke@435	94
duke@435	95	void C2Compiler::initialize() {
duke@435	96	// The first compiler thread that gets here will initialize the
anoll@5919	97	// small amount of global state (and runtime stubs) that C2 needs.
duke@435	98
duke@435	99	// There is a race possible once at startup and then we're fine
duke@435	100
duke@435	101	// Note that this is being called from a compiler thread not the
duke@435	102	// main startup thread.
anoll@5919	103	if (should_perform_init()) {
anoll@5919	104	bool successful = C2Compiler::init_c2_runtime();
anoll@5919	105	int new_state = (successful) ? initialized : failed;
anoll@5919	106	set_state(new_state);
duke@435	107	}
duke@435	108	}
duke@435	109
anoll@5919	110	void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
anoll@5919	111	assert(is_initialized(), "Compiler thread must be initialized");
anoll@5919	112
kvn@2040	113	bool subsume_loads = SubsumeLoads;
anoll@5919	114	bool do_escape_analysis = DoEscapeAnalysis && !env->jvmti_can_access_local_variables();
kvn@5110	115	bool eliminate_boxing = EliminateAutoBox;
duke@435	116	while (!env->failing()) {
duke@435	117	// Attempt to compile while subsuming loads into machine instructions.
kvn@5110	118	Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing);
duke@435	119
kvn@2040	120
duke@435	121	// Check result and retry if appropriate.
duke@435	122	if (C.failure_reason() != NULL) {
kvn@473	123	if (C.failure_reason_is(retry_no_subsuming_loads())) {
duke@435	124	assert(subsume_loads, "must make progress");
duke@435	125	subsume_loads = false;
duke@435	126	continue; // retry
duke@435	127	}
kvn@473	128	if (C.failure_reason_is(retry_no_escape_analysis())) {
kvn@473	129	assert(do_escape_analysis, "must make progress");
kvn@473	130	do_escape_analysis = false;
kvn@473	131	continue; // retry
kvn@473	132	}
kvn@5110	133	if (C.has_boxed_value()) {
kvn@5110	134	// Recompile without boxing elimination regardless failure reason.
kvn@5110	135	assert(eliminate_boxing, "must make progress");
kvn@5110	136	eliminate_boxing = false;
kvn@5110	137	continue; // retry
kvn@5110	138	}
duke@435	139	// Pass any other failure reason up to the ciEnv.
duke@435	140	// Note that serious, irreversible failures are already logged
duke@435	141	// on the ciEnv via env->record_method_not_compilable().
duke@435	142	env->record_failure(C.failure_reason());
duke@435	143	}
kvn@2040	144	if (StressRecompilation) {
kvn@2040	145	if (subsume_loads) {
kvn@2040	146	subsume_loads = false;
kvn@2040	147	continue; // retry
kvn@2040	148	}
kvn@2040	149	if (do_escape_analysis) {
kvn@2040	150	do_escape_analysis = false;
kvn@2040	151	continue; // retry
kvn@2040	152	}
kvn@2040	153	}
duke@435	154
duke@435	155	// No retry; just break the loop.
duke@435	156	break;
duke@435	157	}
duke@435	158	}
duke@435	159
duke@435	160
duke@435	161	void C2Compiler::print_timers() {
duke@435	162	// do nothing
duke@435	163	}