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test/compiler/c1/TestGotoIf.jasm@e0e66aba375a
test/compiler/c1/TestGotoIf.jasm
Tue, 19 Feb 2019 08:58:55 +0100
- author
- thartmann
- date
- Tue, 19 Feb 2019 08:58:55 +0100
- changeset 9715
- e0e66aba375a
- permissions
- -rw-r--r--
8218721: C1's CEE optimization produces safepoint poll with invalid debug information
Summary: Bail out of CEE if one of the gotos is a safepoint but the if is not.
Reviewed-by: vlivanov, mdoerr
1 /*
2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 public class compiler/c1/TestGotoIf version 52:0 {
26 public Field f1:"I";
27 public Field f2:"I";
28 public static Field i:"I";
30 Method "<init>":"()V" stack 1 locals 1 {
31 aload_0;
32 invokespecial Method java/lang/Object."<init>":"()V";
33 return;
34 }
36 public Method test1:"()I" stack 3 locals 1 {
37 aload_0;
38 getfield Field f1:"I";
39 aload_0;
40 getfield Field f2:"I";
41 iconst_1;
42 isub;
43 // Without the fix, if got eliminated by CEE
44 if_icmpgt Null;
45 iconst_1;
46 Return: stack_frame_type stack1;
47 stack_map int;
48 ireturn;
49 Null: stack_frame_type same;
50 iconst_0;
51 goto Return; // Backbranch (t_goto) with safepoint
52 }
54 public Method test2:"()I" stack 3 locals 1 {
55 aload_0;
56 getfield Field f1:"I";
57 aload_0;
58 getfield Field f2:"I";
59 iconst_1;
60 isub;
61 goto Skip;
62 Return: stack_frame_type full;
63 stack_map int;
64 ireturn;
65 Skip: stack_frame_type full;
66 stack_map int, int;
67 // Without the fix, if got eliminated by CEE
68 if_icmpgt Null;
69 iconst_1;
70 goto Return; // Backbranch (f_goto) with safepoint
71 Null: stack_frame_type full;
72 stack_map;
73 iconst_0;
74 goto Return; // Backbranch (t_goto) with safepoint
75 }
77 public Method test3:"()I" stack 3 locals 1 {
78 aload_0;
79 getfield Field f1:"I";
80 aload_0;
81 getfield Field f2:"I";
82 iconst_1;
83 isub;
84 goto Skip;
85 Return: stack_frame_type full;
86 stack_map int;
87 ireturn;
88 Null: stack_frame_type full;
89 stack_map;
90 iconst_0;
91 goto Return; // Backbranch (t_goto) with safepoint
92 Skip: stack_frame_type full;
93 stack_map int, int;
94 // If will be eliminated by CEE
95 if_icmpgt Null; // Backbranch (if) with safepoint
96 iconst_1;
97 goto Return; // Backbranch (f_goto) with safepoint
98 }
100 public Method test4:"()I" stack 3 locals 1 {
101 aload_0;
102 getfield Field f1:"I";
103 aload_0;
104 getfield Field f2:"I";
105 iconst_1;
106 isub;
107 goto Skip;
108 Null: stack_frame_type full;
109 stack_map;
110 iconst_0;
111 Return: stack_frame_type full;
112 stack_map int;
113 ireturn;
114 Skip: stack_frame_type full;
115 stack_map int, int;
116 // If will be eliminated by CEE
117 if_icmpgt Null; // Backbranch (if) with safepoint
118 iconst_1;
119 goto Return; // Backbranch (f_goto) with safepoint
120 }
122 public Method test5:"()I" stack 3 locals 2 {
123 aload_0;
124 getfield Field f1:"I";
125 aload_0;
126 getfield Field f2:"I";
127 iconst_1;
128 isub;
129 goto Skip;
130 Null: stack_frame_type full;
131 stack_map;
132 iconst_0;
133 goto Return;
134 Skip: stack_frame_type full;
135 stack_map int, int;
136 // If will be eliminated by CEE
137 if_icmpgt Null; // Backbranch (if) with safepoint
138 iconst_1;
139 Return: stack_frame_type full;
140 stack_map int;
141 ireturn;
142 }
144 public Method test6:"()I" stack 4 locals 1 {
145 getstatic Field i:"I";
146 Loop: stack_frame_type full;
147 stack_map int;
148 // Decrement i and exit loop if < 0
149 iconst_0;
150 getstatic Field i:"I";
151 iconst_1;
152 isub;
153 dup;
154 putstatic Field i:"I";
155 if_icmpgt Exit;
157 iconst_1;
158 // Without the fix, if got eliminated by CEE
159 if_icmpgt Null;
160 iconst_1;
161 goto Loop; // Backbranch (f_goto) with safepoint
162 Null: stack_frame_type same;
163 iconst_0;
164 goto Loop; // Backbranch (t_goto) with safepoint
166 Exit: stack_frame_type full;
167 stack_map int;
168 iconst_0;
169 ireturn;
170 }
171 }
