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src/share/vm/c1/c1_Compiler.cpp@f02a8bbe6ed4 (annotated)

src/share/vm/c1/c1_Compiler.cpp

Tue, 29 Dec 2009 19:08:54 +0100

author

roland

date

Tue, 29 Dec 2009 19:08:54 +0100

changeset 2174

f02a8bbe6ed4

parent 1939

b812ff5abc73

child 2314

f95d63e2154a

permissions

-rw-r--r--

6986046: C1 valuestack cleanup
Summary: fixes an historical oddity in C1 with inlining where all of the expression stacks are kept in the topmost ValueStack instead of being in their respective ValueStacks.
Reviewed-by: never
Contributed-by: Christian Wimmer <cwimmer@uci.edu>

duke@435	1	/*
trims@1907	2	* Copyright (c) 1999, 2007, 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
duke@435	25	#include "incls/_precompiled.incl"
duke@435	26	#include "incls/_c1_Compiler.cpp.incl"
duke@435	27
duke@435	28	volatile int Compiler::_runtimes = uninitialized;
duke@435	29
duke@435	30	Compiler::Compiler() {
duke@435	31	}
duke@435	32
duke@435	33
duke@435	34	Compiler::~Compiler() {
duke@435	35	Unimplemented();
duke@435	36	}
duke@435	37
duke@435	38
iveresov@1939	39	void Compiler::initialize_all() {
iveresov@1939	40	BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
iveresov@1939	41	Arena* arena = new Arena();
iveresov@1939	42	Runtime1::initialize(buffer_blob);
iveresov@1939	43	FrameMap::initialize();
iveresov@1939	44	// initialize data structures
iveresov@1939	45	ValueType::initialize(arena);
iveresov@1939	46	// Instruction::initialize();
iveresov@1939	47	// BlockBegin::initialize();
iveresov@1939	48	GraphBuilder::initialize();
iveresov@1939	49	// note: to use more than one instance of LinearScan at a time this function call has to
iveresov@1939	50	// be moved somewhere outside of this constructor:
iveresov@1939	51	Interval::initialize(arena);
iveresov@1939	52	}
iveresov@1939	53
iveresov@1939	54
duke@435	55	void Compiler::initialize() {
duke@435	56	if (_runtimes != initialized) {
iveresov@1939	57	initialize_runtimes( initialize_all, &_runtimes);
duke@435	58	}
duke@435	59	mark_initialized();
duke@435	60	}
duke@435	61
duke@435	62
iveresov@1939	63	BufferBlob* Compiler::build_buffer_blob() {
iveresov@1939	64	// setup CodeBuffer. Preallocate a BufferBlob of size
iveresov@1939	65	// NMethodSizeLimit plus some extra space for constants.
iveresov@1939	66	int code_buffer_size = Compilation::desired_max_code_buffer_size() +
iveresov@1939	67	Compilation::desired_max_constant_size();
iveresov@1939	68	BufferBlob* blob = BufferBlob::create("Compiler1 temporary CodeBuffer",
iveresov@1939	69	code_buffer_size);
iveresov@1939	70	guarantee(blob != NULL, "must create initial code buffer");
iveresov@1939	71	return blob;
iveresov@1939	72	}
iveresov@1939	73
iveresov@1939	74
duke@435	75	void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
iveresov@1939	76	// Allocate buffer blob once at startup since allocation for each
iveresov@1939	77	// compilation seems to be too expensive (at least on Intel win32).
iveresov@1939	78	BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
iveresov@1939	79	if (buffer_blob == NULL) {
iveresov@1939	80	buffer_blob = build_buffer_blob();
iveresov@1939	81	CompilerThread::current()->set_buffer_blob(buffer_blob);
iveresov@1939	82	}
duke@435	83
duke@435	84	if (!is_initialized()) {
duke@435	85	initialize();
duke@435	86	}
duke@435	87	// invoke compilation
duke@435	88	{
duke@435	89	// We are nested here because we need for the destructor
duke@435	90	// of Compilation to occur before we release the any
duke@435	91	// competing compiler thread
duke@435	92	ResourceMark rm;
iveresov@1939	93	Compilation c(this, env, method, entry_bci, buffer_blob);
duke@435	94	}
duke@435	95	}
duke@435	96
duke@435	97
duke@435	98	void Compiler::print_timers() {
duke@435	99	Compilation::print_timers();
duke@435	100	}