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src/share/vm/opto/phase.cpp@c1c199dde5c9 (annotated)

src/share/vm/opto/phase.cpp

Wed, 03 Jun 2015 14:22:57 +0200

author

roland

date

Wed, 03 Jun 2015 14:22:57 +0200

changeset 7859

c1c199dde5c9

parent 7564

9df0d8f65fea

child 7994

04ff2f6cd0eb

child 8193

70649f10b88c

permissions

-rw-r--r--

8077504: Unsafe load can loose control dependency and cause crash
Summary: Node::depends_only_on_test() should return false for Unsafe loads
Reviewed-by: kvn, adinn

duke@435	1	/*
mikael@6198	2	* Copyright (c) 1997, 2013, 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 "code/nmethod.hpp"
stefank@2314	27	#include "compiler/compileBroker.hpp"
stefank@2314	28	#include "opto/compile.hpp"
goetz@6478	29	#include "opto/matcher.hpp"
stefank@2314	30	#include "opto/node.hpp"
stefank@2314	31	#include "opto/phase.hpp"
duke@435	32
duke@435	33	#ifndef PRODUCT
duke@435	34	int Phase::_total_bytes_compiled = 0;
duke@435	35
duke@435	36	elapsedTimer Phase::_t_totalCompilation;
duke@435	37	elapsedTimer Phase::_t_methodCompilation;
duke@435	38	elapsedTimer Phase::_t_stubCompilation;
duke@435	39	#endif
duke@435	40
duke@435	41	// The next timers used for LogCompilation
duke@435	42	elapsedTimer Phase::_t_parser;
duke@435	43	elapsedTimer Phase::_t_optimizer;
kvn@3651	44	elapsedTimer Phase::_t_escapeAnalysis;
kvn@3651	45	elapsedTimer Phase::_t_connectionGraph;
duke@435	46	elapsedTimer Phase::_t_idealLoop;
duke@435	47	elapsedTimer Phase::_t_ccp;
duke@435	48	elapsedTimer Phase::_t_matcher;
duke@435	49	elapsedTimer Phase::_t_registerAllocation;
duke@435	50	elapsedTimer Phase::_t_output;
duke@435	51
duke@435	52	#ifndef PRODUCT
duke@435	53	elapsedTimer Phase::_t_graphReshaping;
duke@435	54	elapsedTimer Phase::_t_scheduler;
rasbold@853	55	elapsedTimer Phase::_t_blockOrdering;
kvn@3651	56	elapsedTimer Phase::_t_macroEliminate;
duke@435	57	elapsedTimer Phase::_t_macroExpand;
duke@435	58	elapsedTimer Phase::_t_peephole;
goetz@6478	59	elapsedTimer Phase::_t_postalloc_expand;
duke@435	60	elapsedTimer Phase::_t_codeGeneration;
duke@435	61	elapsedTimer Phase::_t_registerMethod;
duke@435	62	elapsedTimer Phase::_t_temporaryTimer1;
duke@435	63	elapsedTimer Phase::_t_temporaryTimer2;
never@1356	64	elapsedTimer Phase::_t_idealLoopVerify;
duke@435	65
duke@435	66	// Subtimers for _t_optimizer
duke@435	67	elapsedTimer Phase::_t_iterGVN;
duke@435	68	elapsedTimer Phase::_t_iterGVN2;
kvn@5110	69	elapsedTimer Phase::_t_incrInline;
duke@435	70
duke@435	71	// Subtimers for _t_registerAllocation
duke@435	72	elapsedTimer Phase::_t_ctorChaitin;
duke@435	73	elapsedTimer Phase::_t_buildIFGphysical;
duke@435	74	elapsedTimer Phase::_t_computeLive;
duke@435	75	elapsedTimer Phase::_t_regAllocSplit;
duke@435	76	elapsedTimer Phase::_t_postAllocCopyRemoval;
iveresov@7564	77	elapsedTimer Phase::_t_mergeMultidefs;
duke@435	78	elapsedTimer Phase::_t_fixupSpills;
duke@435	79
duke@435	80	// Subtimers for _t_output
duke@435	81	elapsedTimer Phase::_t_instrSched;
duke@435	82	elapsedTimer Phase::_t_buildOopMaps;
duke@435	83	#endif
duke@435	84
duke@435	85	//------------------------------Phase------------------------------------------
duke@435	86	Phase::Phase( PhaseNumber pnum ) : _pnum(pnum), C( pnum == Compiler ? NULL : Compile::current()) {
twisti@1040	87	// Poll for requests from shutdown mechanism to quiesce compiler (4448539, 4448544).
duke@435	88	// This is an effective place to poll, since the compiler is full of phases.
duke@435	89	// In particular, every inlining site uses a recursively created Parse phase.
duke@435	90	CompileBroker::maybe_block();
duke@435	91	}
duke@435	92
duke@435	93	#ifndef PRODUCT
duke@435	94	static const double minimum_reported_time = 0.0001; // seconds
duke@435	95	static const double expected_method_compile_coverage = 0.97; // %
duke@435	96	static const double minimum_meaningful_method_compile = 2.00; // seconds
duke@435	97
duke@435	98	void Phase::print_timers() {
duke@435	99	tty->print_cr ("Accumulated compiler times:");
duke@435	100	tty->print_cr ("---------------------------");
duke@435	101	tty->print_cr (" Total compilation: %3.3f sec.", Phase::_t_totalCompilation.seconds());
never@1356	102	tty->print (" method compilation : %3.3f sec", Phase::_t_methodCompilation.seconds());
duke@435	103	tty->print ("/%d bytes",_total_bytes_compiled);
duke@435	104	tty->print_cr (" (%3.0f bytes per sec) ", Phase::_total_bytes_compiled / Phase::_t_methodCompilation.seconds());
never@1356	105	tty->print_cr (" stub compilation : %3.3f sec.", Phase::_t_stubCompilation.seconds());
duke@435	106	tty->print_cr (" Phases:");
never@1356	107	tty->print_cr (" parse : %3.3f sec", Phase::_t_parser.seconds());
never@1356	108	tty->print_cr (" optimizer : %3.3f sec", Phase::_t_optimizer.seconds());
duke@435	109	if( Verbose || WizardMode ) {
kvn@2556	110	if (DoEscapeAnalysis) {
kvn@2556	111	// EA is part of Optimizer.
kvn@2556	112	tty->print_cr (" escape analysis: %3.3f sec", Phase::_t_escapeAnalysis.seconds());
kvn@3651	113	tty->print_cr (" connection graph: %3.3f sec", Phase::_t_connectionGraph.seconds());
kvn@3651	114	tty->print_cr (" macroEliminate : %3.3f sec", Phase::_t_macroEliminate.seconds());
kvn@2556	115	}
never@1356	116	tty->print_cr (" iterGVN : %3.3f sec", Phase::_t_iterGVN.seconds());
kvn@5110	117	tty->print_cr (" incrInline : %3.3f sec", Phase::_t_incrInline.seconds());
never@1356	118	tty->print_cr (" idealLoop : %3.3f sec", Phase::_t_idealLoop.seconds());
never@1356	119	tty->print_cr (" idealLoopVerify: %3.3f sec", Phase::_t_idealLoopVerify.seconds());
never@1356	120	tty->print_cr (" ccp : %3.3f sec", Phase::_t_ccp.seconds());
never@1356	121	tty->print_cr (" iterGVN2 : %3.3f sec", Phase::_t_iterGVN2.seconds());
kvn@2556	122	tty->print_cr (" macroExpand : %3.3f sec", Phase::_t_macroExpand.seconds());
never@1356	123	tty->print_cr (" graphReshape : %3.3f sec", Phase::_t_graphReshaping.seconds());
kvn@3651	124	double optimizer_subtotal = Phase::_t_iterGVN.seconds() + Phase::_t_iterGVN2.seconds() +
kvn@3651	125	Phase::_t_escapeAnalysis.seconds() + Phase::_t_macroEliminate.seconds() +
duke@435	126	Phase::_t_idealLoop.seconds() + Phase::_t_ccp.seconds() +
kvn@3651	127	Phase::_t_macroExpand.seconds() + Phase::_t_graphReshaping.seconds();
duke@435	128	double percent_of_optimizer = ((optimizer_subtotal == 0.0) ? 0.0 : (optimizer_subtotal / Phase::_t_optimizer.seconds() * 100.0));
never@1356	129	tty->print_cr (" subtotal : %3.3f sec, %3.2f %%", optimizer_subtotal, percent_of_optimizer);
duke@435	130	}
never@1356	131	tty->print_cr (" matcher : %3.3f sec", Phase::_t_matcher.seconds());
never@1356	132	tty->print_cr (" scheduler : %3.3f sec", Phase::_t_scheduler.seconds());
never@1356	133	tty->print_cr (" regalloc : %3.3f sec", Phase::_t_registerAllocation.seconds());
duke@435	134	if( Verbose || WizardMode ) {
never@1356	135	tty->print_cr (" ctorChaitin : %3.3f sec", Phase::_t_ctorChaitin.seconds());
never@1356	136	tty->print_cr (" buildIFG : %3.3f sec", Phase::_t_buildIFGphysical.seconds());
never@1356	137	tty->print_cr (" computeLive : %3.3f sec", Phase::_t_computeLive.seconds());
never@1356	138	tty->print_cr (" regAllocSplit : %3.3f sec", Phase::_t_regAllocSplit.seconds());
duke@435	139	tty->print_cr (" postAllocCopyRemoval: %3.3f sec", Phase::_t_postAllocCopyRemoval.seconds());
iveresov@7564	140	tty->print_cr (" mergeMultidefs: %3.3f sec", Phase::_t_mergeMultidefs.seconds());
never@1356	141	tty->print_cr (" fixupSpills : %3.3f sec", Phase::_t_fixupSpills.seconds());
duke@435	142	double regalloc_subtotal = Phase::_t_ctorChaitin.seconds() +
duke@435	143	Phase::_t_buildIFGphysical.seconds() + Phase::_t_computeLive.seconds() +
duke@435	144	Phase::_t_regAllocSplit.seconds() + Phase::_t_fixupSpills.seconds() +
iveresov@7564	145	Phase::_t_postAllocCopyRemoval.seconds() + Phase::_t_mergeMultidefs.seconds();
duke@435	146	double percent_of_regalloc = ((regalloc_subtotal == 0.0) ? 0.0 : (regalloc_subtotal / Phase::_t_registerAllocation.seconds() * 100.0));
never@1356	147	tty->print_cr (" subtotal : %3.3f sec, %3.2f %%", regalloc_subtotal, percent_of_regalloc);
duke@435	148	}
never@1356	149	tty->print_cr (" blockOrdering : %3.3f sec", Phase::_t_blockOrdering.seconds());
never@1356	150	tty->print_cr (" peephole : %3.3f sec", Phase::_t_peephole.seconds());
goetz@6478	151	if (Matcher::require_postalloc_expand) {
goetz@6478	152	tty->print_cr (" postalloc_expand: %3.3f sec", Phase::_t_postalloc_expand.seconds());
goetz@6478	153	}
never@1356	154	tty->print_cr (" codeGen : %3.3f sec", Phase::_t_codeGeneration.seconds());
never@1356	155	tty->print_cr (" install_code : %3.3f sec", Phase::_t_registerMethod.seconds());
never@1356	156	tty->print_cr (" -------------- : ----------");
duke@435	157	double phase_subtotal = Phase::_t_parser.seconds() +
duke@435	158	Phase::_t_optimizer.seconds() + Phase::_t_graphReshaping.seconds() +
duke@435	159	Phase::_t_matcher.seconds() + Phase::_t_scheduler.seconds() +
rasbold@853	160	Phase::_t_registerAllocation.seconds() + Phase::_t_blockOrdering.seconds() +
duke@435	161	Phase::_t_codeGeneration.seconds() + Phase::_t_registerMethod.seconds();
duke@435	162	double percent_of_method_compile = ((phase_subtotal == 0.0) ? 0.0 : phase_subtotal / Phase::_t_methodCompilation.seconds()) * 100.0;
duke@435	163	// counters inside Compile::CodeGen include time for adapters and stubs
duke@435	164	// so phase-total can be greater than 100%
never@1356	165	tty->print_cr (" total : %3.3f sec, %3.2f %%", phase_subtotal, percent_of_method_compile);
duke@435	166
duke@435	167	assert( percent_of_method_compile > expected_method_compile_coverage ||
duke@435	168	phase_subtotal < minimum_meaningful_method_compile,
duke@435	169	"Must account for method compilation");
duke@435	170
duke@435	171	if( Phase::_t_temporaryTimer1.seconds() > minimum_reported_time ) {
duke@435	172	tty->cr();
duke@435	173	tty->print_cr (" temporaryTimer1: %3.3f sec", Phase::_t_temporaryTimer1.seconds());
duke@435	174	}
duke@435	175	if( Phase::_t_temporaryTimer2.seconds() > minimum_reported_time ) {
duke@435	176	tty->cr();
duke@435	177	tty->print_cr (" temporaryTimer2: %3.3f sec", Phase::_t_temporaryTimer2.seconds());
duke@435	178	}
never@1356	179	tty->print_cr (" output : %3.3f sec", Phase::_t_output.seconds());
never@1356	180	tty->print_cr (" isched : %3.3f sec", Phase::_t_instrSched.seconds());
never@1356	181	tty->print_cr (" bldOopMaps : %3.3f sec", Phase::_t_buildOopMaps.seconds());
duke@435	182	}
duke@435	183	#endif