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/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "opto/opaquenode.hpp"
#include "opto/phaseX.hpp"
//=============================================================================
// Do not allow value-numbering
uint Opaque1Node::hash() const { return NO_HASH; }
bool Opaque1Node::cmp( const Node &n ) const {
return (&n == this); // Always fail except on self
}
//------------------------------Identity---------------------------------------
// Do NOT remove the opaque node until no more loop opts can happen.
Node* Opaque1Node::Identity(PhaseGVN* phase) {
if (phase->C->post_loop_opts_phase()) {
return in(1);
} else {
phase->C->record_for_post_loop_opts_igvn(this);
}
return this;
}
// Do NOT remove the opaque node until no more loop opts can happen.
Node* Opaque3Node::Identity(PhaseGVN* phase) {
if (phase->C->post_loop_opts_phase()) {
return in(1);
} else {
phase->C->record_for_post_loop_opts_igvn(this);
}
return this;
}
// Do not allow value-numbering
uint Opaque3Node::hash() const { return NO_HASH; }
bool Opaque3Node::cmp(const Node &n) const {
return (&n == this); // Always fail except on self
}
const Type* Opaque4Node::Value(PhaseGVN* phase) const {
return phase->type(in(1));
}
//=============================================================================
uint ProfileBooleanNode::hash() const { return NO_HASH; }
bool ProfileBooleanNode::cmp( const Node &n ) const {
return (&n == this);
}
Node *ProfileBooleanNode::Ideal(PhaseGVN *phase, bool can_reshape) {
if (can_reshape && _delay_removal) {
_delay_removal = false;
return this;
} else {
return NULL;
}
}
Node* ProfileBooleanNode::Identity(PhaseGVN* phase) {
if (_delay_removal) {
return this;
} else {
assert(_consumed, "profile should be consumed before elimination");
return in(1);
}
}
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