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comparison src/share/vm/shark/sharkFunction.hpp @ 1692:d2ede61b7a12

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6976186: integrate Shark HotSpot changes Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure. Reviewed-by: kvn, twisti Contributed-by: Gary Benson <gbenson@redhat.com>
author twisti
date Wed, 11 Aug 2010 05:51:21 -0700
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children f95d63e2154a
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1691:4a665be40fd3 1692:d2ede61b7a12
1 /*
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2008, 2009 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 class SharkTopLevelBlock;
27 class DeferredZeroCheck;
28
29 class SharkFunction : public SharkTargetInvariants {
30 friend class SharkStackWithNormalFrame;
31
32 public:
33 static llvm::Function* build(ciEnv* env,
34 SharkBuilder* builder,
35 ciTypeFlow* flow,
36 const char* name) {
37 SharkFunction function(env, builder, flow, name);
38 return function.function();
39 }
40
41 private:
42 SharkFunction(ciEnv* env,
43 SharkBuilder* builder,
44 ciTypeFlow* flow,
45 const char* name)
46 : SharkTargetInvariants(env, builder, flow) { initialize(name); }
47
48 private:
49 void initialize(const char* name);
50
51 private:
52 llvm::Function* _function;
53 SharkTopLevelBlock** _blocks;
54 GrowableArray<DeferredZeroCheck*> _deferred_zero_checks;
55 SharkStack* _stack;
56
57 public:
58 llvm::Function* function() const {
59 return _function;
60 }
61 int block_count() const {
62 return flow()->block_count();
63 }
64 SharkTopLevelBlock* block(int i) const {
65 assert(i < block_count(), "should be");
66 return _blocks[i];
67 }
68 GrowableArray<DeferredZeroCheck*>* deferred_zero_checks() {
69 return &_deferred_zero_checks;
70 }
71 SharkStack* stack() const {
72 return _stack;
73 }
74
75 // On-stack replacement
76 private:
77 bool is_osr() const {
78 return flow()->is_osr_flow();
79 }
80 const llvm::FunctionType* entry_point_type() const {
81 if (is_osr())
82 return SharkType::osr_entry_point_type();
83 else
84 return SharkType::entry_point_type();
85 }
86
87 // Block management
88 private:
89 llvm::BasicBlock* _block_insertion_point;
90
91 void set_block_insertion_point(llvm::BasicBlock* block_insertion_point) {
92 _block_insertion_point = block_insertion_point;
93 }
94 llvm::BasicBlock* block_insertion_point() const {
95 return _block_insertion_point;
96 }
97
98 public:
99 llvm::BasicBlock* CreateBlock(const char* name = "") const {
100 return llvm::BasicBlock::Create(
101 SharkContext::current(), name, function(), block_insertion_point());
102 }
103
104 // Deferred zero checks
105 public:
106 void add_deferred_zero_check(SharkTopLevelBlock* block,
107 SharkValue* value);
108
109 private:
110 void do_deferred_zero_checks();
111 };