Mercurial > hg > truffle

annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/SLWriteLocalVariableNode.java @ 13959:96bd95f62d92

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
SL: small cleanups
author Christian Wimmer <christian.wimmer@oracle.com>
date Sat, 15 Feb 2014 06:54:20 -0800
parents afd6fa5e8229
children abe7128ca473
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
1 /*
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
4 *
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
8 *
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
13 * accompanied this code).
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
14 *
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
18 *
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
21 * questions.
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
22 */
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13359
diff changeset
23 package com.oracle.truffle.sl.nodes.local;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
24
13359
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
25 import com.oracle.truffle.api.*;
10597
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
Christian Humer <christian.humer@gmail.com>
parents: 10593
diff changeset
26 import com.oracle.truffle.api.dsl.*;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
27 import com.oracle.truffle.api.frame.*;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13359
diff changeset
28 import com.oracle.truffle.sl.nodes.*;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
29
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
30 /**
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
31 * Node to write a local variable to a function's {@link VirtualFrame frame}. The Truffle frame API
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
32 * allows to store primitive values of all Java primitive types, and Object values.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
33 */
13959
96bd95f62d92 SL: small cleanups
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13882
diff changeset
34 @NodeChild("valueNode")
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
35 @NodeField(name = "slot", type = FrameSlot.class)
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
36 public abstract class SLWriteLocalVariableNode extends SLExpressionNode {
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
37
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
38 /**
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
39 * Returns the descriptor of the accessed local variable. The implementation of this method is
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
40 * created by the Truffle DSL based on the {@link NodeField} annotation on the class.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
41 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
42 protected abstract FrameSlot getSlot();
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
43
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
44 /**
13882
afd6fa5e8229 SL: Feedback from reviewers
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13836
diff changeset
45 * Specialized method to write a primitive {@code long} value. This is only possible if the
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
46 * local variable also has currently the type {@code long}, therefore a Truffle DSL
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
47 * {@link #isLongKind() custom guard} is specified.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
48 */
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13359
diff changeset
49 @Specialization(guards = "isLongKind")
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
50 protected long write(VirtualFrame frame, long value) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
51 frame.setLong(getSlot(), value);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
52 return value;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
53 }
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
54
13359
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
55 @Specialization(guards = "isBooleanKind")
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
56 protected boolean write(VirtualFrame frame, boolean value) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
57 frame.setBoolean(getSlot(), value);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
58 return value;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
59 }
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
60
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
61 /**
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
62 * Generic write method that works for all possible types.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
63 * <p>
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
64 * Why is this method annotated with {@link Specialization} and not {@link Generic}? For a
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
65 * {@link Generic} method, the Truffle DSL generated code would try all other specializations
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
66 * first before calling this method. We know that all these specializations would fail their
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
67 * guards, so there is no point in calling them. Since this method takes a value of type
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
68 * {@link Object}, it is guaranteed to never fail, i.e., once we are in this specialization the
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
69 * node will never be re-specialized.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
70 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
71 @Specialization
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
72 protected Object write(VirtualFrame frame, Object value) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
73 if (getSlot().getKind() != FrameSlotKind.Object) {
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
74 /*
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
75 * The local variable has still a primitive type, we need to change it to Object. Since
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
76 * the variable type is important when the compiler optimizes a method, we also discard
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
77 * compiled code.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
78 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
79 CompilerDirectives.transferToInterpreterAndInvalidate();
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
80 getSlot().setKind(FrameSlotKind.Object);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
81 }
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
82 frame.setObject(getSlot(), value);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
83 return value;
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
84 }
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
85
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
86 /**
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
87 * Guard function that the local variable has the type {@code long}.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
88 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
89 protected boolean isLongKind() {
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13359
diff changeset
90 return isKind(FrameSlotKind.Long);
13359
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
91 }
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
92
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
93 protected boolean isBooleanKind() {
13359
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
94 return isKind(FrameSlotKind.Boolean);
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
95 }
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
96
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
97 private boolean isKind(FrameSlotKind kind) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
98 if (getSlot().getKind() == kind) {
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
99 /* Success: the frame slot has the expected kind. */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
100 return true;
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
101 } else if (getSlot().getKind() == FrameSlotKind.Illegal) {
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
102 /*
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
103 * This is the first write to this local variable. We can set the type to the one we
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
104 * expect. Since the variable type is important when the compiler optimizes a method, we
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
105 * also discard compiled code.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
106 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
107 CompilerDirectives.transferToInterpreterAndInvalidate();
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
108 getSlot().setKind(kind);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
109 return true;
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
110 } else {
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
111 /*
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
112 * Failure: the frame slot has the wrong kind, the Truffle DSL generated code will
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
113 * choose a different specialization.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
114 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
115 return false;
13359
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
116 }
136df94b5aa8 SL: updated outdated implementation of write local variable nodes in SL.
Christian Humer <christian.humer@gmail.com>
parents: 12405
diff changeset
117 }
7503
31da1716950f Updated truffle-sl for the changed operation code generation.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
118 }