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/*
* Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
* Copyright 2008, 2009 Red Hat, Inc.
* 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.
*
*/
class SharkTopLevelBlock;
class DeferredZeroCheck;
class SharkFunction : public SharkTargetInvariants {
friend class SharkStackWithNormalFrame;
public:
static llvm::Function* build(ciEnv* env,
SharkBuilder* builder,
ciTypeFlow* flow,
const char* name) {
SharkFunction function(env, builder, flow, name);
return function.function();
}
private:
SharkFunction(ciEnv* env,
SharkBuilder* builder,
ciTypeFlow* flow,
const char* name)
: SharkTargetInvariants(env, builder, flow) { initialize(name); }
private:
void initialize(const char* name);
private:
llvm::Function* _function;
SharkTopLevelBlock** _blocks;
GrowableArray<DeferredZeroCheck*> _deferred_zero_checks;
SharkStack* _stack;
public:
llvm::Function* function() const {
return _function;
}
int block_count() const {
return flow()->block_count();
}
SharkTopLevelBlock* block(int i) const {
assert(i < block_count(), "should be");
return _blocks[i];
}
GrowableArray<DeferredZeroCheck*>* deferred_zero_checks() {
return &_deferred_zero_checks;
}
SharkStack* stack() const {
return _stack;
}
// On-stack replacement
private:
bool is_osr() const {
return flow()->is_osr_flow();
}
const llvm::FunctionType* entry_point_type() const {
if (is_osr())
return SharkType::osr_entry_point_type();
else
return SharkType::entry_point_type();
}
// Block management
private:
llvm::BasicBlock* _block_insertion_point;
void set_block_insertion_point(llvm::BasicBlock* block_insertion_point) {
_block_insertion_point = block_insertion_point;
}
llvm::BasicBlock* block_insertion_point() const {
return _block_insertion_point;
}
public:
llvm::BasicBlock* CreateBlock(const char* name = "") const {
return llvm::BasicBlock::Create(
SharkContext::current(), name, function(), block_insertion_point());
}
// Deferred zero checks
public:
void add_deferred_zero_check(SharkTopLevelBlock* block,
SharkValue* value);
private:
void do_deferred_zero_checks();
};
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