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 // Items on the stack and in local variables are tracked using
27 // SharkValue objects.
28 //
29 // All SharkValues are one of two core types, SharkNormalValue
30 // and SharkAddressValue, but no code outside this file should
31 // ever refer to those directly. The split is because of the
32 // way JSRs are handled: the typeflow pass expands them into
33 // multiple copies, so the return addresses pushed by jsr and
34 // popped by ret only exist at compile time. Having separate
35 // classes for these allows us to check that our jsr handling
36 // is correct, via assertions.
37 //
38 // There is one more type, SharkPHIValue, which is a subclass
39 // of SharkNormalValue with a couple of extra methods. Use of
40 // SharkPHIValue outside of this file is acceptable, so long
41 // as it is obtained via SharkValue::as_phi().
42
43 class SharkBuilder;
44 class SharkPHIValue;
45
313 const char* name);
314 };
315
316 // SharkValue methods that can't be declared above
317
318 inline SharkValue* SharkValue::create_generic(ciType* type,
319 llvm::Value* value,
320 bool zero_checked) {
321 return new SharkNormalValue(type, value, zero_checked);
322 }
323
324 inline SharkValue* SharkValue::create_phi(ciType* type,
325 llvm::PHINode* phi,
326 const SharkPHIValue* parent) {
327 return new SharkPHIValue(type, phi, parent);
328 }
329
330 inline SharkValue* SharkValue::address_constant(int bci) {
331 return new SharkAddressValue(bci);
332 }
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1 /*
2 * Copyright (c) 1999, 2010, 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 #ifndef SHARE_VM_SHARK_SHARKVALUE_HPP
27 #define SHARE_VM_SHARK_SHARKVALUE_HPP
28
29 #include "ci/ciType.hpp"
30 #include "memory/allocation.hpp"
31 #include "shark/llvmHeaders.hpp"
32 #include "shark/llvmValue.hpp"
33 #include "shark/sharkType.hpp"
34
35 // Items on the stack and in local variables are tracked using
36 // SharkValue objects.
37 //
38 // All SharkValues are one of two core types, SharkNormalValue
39 // and SharkAddressValue, but no code outside this file should
40 // ever refer to those directly. The split is because of the
41 // way JSRs are handled: the typeflow pass expands them into
42 // multiple copies, so the return addresses pushed by jsr and
43 // popped by ret only exist at compile time. Having separate
44 // classes for these allows us to check that our jsr handling
45 // is correct, via assertions.
46 //
47 // There is one more type, SharkPHIValue, which is a subclass
48 // of SharkNormalValue with a couple of extra methods. Use of
49 // SharkPHIValue outside of this file is acceptable, so long
50 // as it is obtained via SharkValue::as_phi().
51
52 class SharkBuilder;
53 class SharkPHIValue;
54
322 const char* name);
323 };
324
325 // SharkValue methods that can't be declared above
326
327 inline SharkValue* SharkValue::create_generic(ciType* type,
328 llvm::Value* value,
329 bool zero_checked) {
330 return new SharkNormalValue(type, value, zero_checked);
331 }
332
333 inline SharkValue* SharkValue::create_phi(ciType* type,
334 llvm::PHINode* phi,
335 const SharkPHIValue* parent) {
336 return new SharkPHIValue(type, phi, parent);
337 }
338
339 inline SharkValue* SharkValue::address_constant(int bci) {
340 return new SharkAddressValue(bci);
341 }
342
343 #endif // SHARE_VM_SHARK_SHARKVALUE_HPP
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