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src/share/vm/opto/c2compiler.cpp@a61af66fc99e (annotated)

src/share/vm/opto/c2compiler.cpp

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 473

b789bcaf2dd9

permissions

-rw-r--r--

Initial load

duke@435	1	/*
duke@435	2	* Copyright 1999-2007 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	}
duke@435	38	void C2Compiler::initialize_runtime() {
duke@435	39
duke@435	40	// Check assumptions used while running ADLC
duke@435	41	Compile::adlc_verification();
duke@435	42	assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
duke@435	43
duke@435	44	for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
duke@435	45	OptoReg::vm2opto[i] = OptoReg::Bad;
duke@435	46	}
duke@435	47
duke@435	48	for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
duke@435	49	VMReg r = OptoReg::as_VMReg(i);
duke@435	50	if (r->is_valid()) {
duke@435	51	OptoReg::vm2opto[r->value()] = i;
duke@435	52	}
duke@435	53	}
duke@435	54
duke@435	55	// Check that runtime and architecture description agree on callee-saved-floats
duke@435	56	bool callee_saved_floats = false;
duke@435	57	for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) {
duke@435	58	// Is there a callee-saved float or double?
duke@435	59	if( register_save_policy[i] == 'E' /* callee-saved */ &&
duke@435	60	(register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) {
duke@435	61	callee_saved_floats = true;
duke@435	62	}
duke@435	63	}
duke@435	64
duke@435	65	DEBUG_ONLY( Node::init_NodeProperty(); )
duke@435	66
duke@435	67	Compile::pd_compiler2_init();
duke@435	68
duke@435	69	CompilerThread* thread = CompilerThread::current();
duke@435	70
duke@435	71	HandleMark handle_mark(thread);
duke@435	72
duke@435	73	OptoRuntime::generate(thread->env());
duke@435	74
duke@435	75	}
duke@435	76
duke@435	77
duke@435	78	void C2Compiler::initialize() {
duke@435	79
duke@435	80	// This method can only be called once per C2Compiler object
duke@435	81	// The first compiler thread that gets here will initialize the
duke@435	82	// small amount of global state (and runtime stubs) that c2 needs.
duke@435	83
duke@435	84	// There is a race possible once at startup and then we're fine
duke@435	85
duke@435	86	// Note that this is being called from a compiler thread not the
duke@435	87	// main startup thread.
duke@435	88
duke@435	89	if (_runtimes != initialized) {
duke@435	90	initialize_runtimes( initialize_runtime, &_runtimes);
duke@435	91	}
duke@435	92
duke@435	93	// Mark this compiler object as ready to roll
duke@435	94	mark_initialized();
duke@435	95	}
duke@435	96
duke@435	97	void C2Compiler::compile_method(ciEnv* env,
duke@435	98	ciMethod* target,
duke@435	99	int entry_bci) {
duke@435	100	if (!is_initialized()) {
duke@435	101	initialize();
duke@435	102	}
duke@435	103	bool subsume_loads = true;
duke@435	104	while (!env->failing()) {
duke@435	105	// Attempt to compile while subsuming loads into machine instructions.
duke@435	106	Compile C(env, this, target, entry_bci, subsume_loads);
duke@435	107
duke@435	108	// Check result and retry if appropriate.
duke@435	109	if (C.failure_reason() != NULL) {
duke@435	110	if (C.failure_reason_is(retry_no_subsuming_loads())) {
duke@435	111	assert(subsume_loads, "must make progress");
duke@435	112	subsume_loads = false;
duke@435	113	continue; // retry
duke@435	114	}
duke@435	115	// Pass any other failure reason up to the ciEnv.
duke@435	116	// Note that serious, irreversible failures are already logged
duke@435	117	// on the ciEnv via env->record_method_not_compilable().
duke@435	118	env->record_failure(C.failure_reason());
duke@435	119	}
duke@435	120
duke@435	121	// No retry; just break the loop.
duke@435	122	break;
duke@435	123	}
duke@435	124	}
duke@435	125
duke@435	126
duke@435	127	void C2Compiler::print_timers() {
duke@435	128	// do nothing
duke@435	129	}