1 /*
2 * Copyright (c) 2002, 2018, 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
24 /*
25 * @test
26 *
27 * @summary converted from VM Testbase runtime/jbe/constprop/constprop01.
28 * VM Testbase keywords: [quick, runtime]
29 *
30 * @library /vmTestbase
31 * /test/lib
32 * @run driver jdk.test.lib.FileInstaller . .
33 * @run main/othervm vm.compiler.jbe.constprop.constprop01.constprop01
34 */
35
36 package vm.compiler.jbe.constprop.constprop01;
37
38 // constprop01.java
39
40 /* Tests the Constant Propagation optimization, including calls to math functions
41 with constant arguments.
42 */
43
44 class Starter {
45 int global;
46 int gl_unopt;
47 int gl_opt;
48 int a_one;
49 int zero;
50
51 Starter() {
52 global = 1;
53 gl_unopt = 1;
54 gl_opt = 1;
55 a_one = 1;
56 zero = global - a_one; // really a zero, but compiler doesn't know
57 }
58
59 void increment_unopt() {
60 gl_unopt += a_one;
61 }
62
63 void increment_opt() {
64 gl_opt += a_one;
65 }
66 }
67
68
69 public class constprop01 {
70 static int err = 0;
71 static final int is = 16386;
72 double a, b, c, d, x, z;
73 double a_opt, b_opt, c_opt, d_opt, x_opt, z_opt;
74 static Starter st = new Starter();
75
76 public static void main(String args[]) {
77 constprop01 cpr = new constprop01();
78
79 cpr.un_optimized();
80 cpr.hand_optimized();
81 if (st.gl_unopt != st.gl_opt) {
82 System.out.println(">>Bad output: gl_unopt is not equal to gl_optimized. gl_unopt = "+st.gl_unopt+"; gl_optimized = "+st.gl_opt);
83 err = 1;
84 }
85 if (cpr.a != cpr.a_opt) {
86 System.out.println(">>Bad output: a_unoptimized="+cpr.a+"; a_optimized="+cpr.a_opt);
87 err = 1;
88 }
89 if (cpr.b != cpr.b_opt) {
90 System.out.println(">>Bad output: b_unoptimized="+cpr.b+"; b_optimized="+cpr.b_opt);
91 err = 1;
92 }
93 if (cpr.c != cpr.c_opt) {
94 System.out.println(">>Bad output: c_unoptimized="+cpr.c+"; c_optimized="+cpr.c_opt);
95 err = 1;
96 }
97 if (cpr.d != cpr.d_opt) {
98 System.out.println(">>Bad output: d_unoptimized="+cpr.d+"; d_optimized="+cpr.d_opt);
99 err = 1;
100 }
101 if (cpr.x != cpr.x_opt) {
102 System.out.println(">>Bad output: x_unoptimized="+cpr.x+"; x_optimized="+cpr.x_opt);
103 err = 1;
104 }
105 if (cpr.z != cpr.z_opt) {
106 System.out.println(">>Bad output: z_unoptimized="+cpr.z+"; z_optimized="+cpr.z_opt);
107 err = 1;
108 }
109
110 if (err == 0) {
111 System.out.println("Test constprop01 Passed.");
112 } else {
113 throw new Error("Test constprop01 Failed.");
114 }
115 }
116
117 void un_optimized() {
118 int k, m;
119
120 a = st.a_one;
121 c = st.a_one;
122 d = st.a_one;
123 x = st.a_one;
124
125 // example 1
126 for(k = 0; k < is; k++) {
127 st.increment_unopt();
128 }
129 System.out.println("gl_unopt = "+st.gl_unopt+" after incrementing it 16386 times.");
130 st.gl_unopt -= 16386;
131 System.out.println("gl_unopt = "+st.gl_unopt+" after subtracting 16386.");
132
133 // example 2
134 m = 32769;
135 b = c * m;
136 System.out.println("c = "+c+"; m = 2; b = "+b);
137
138 // example 3
139 a = Math.E / (a * d * Math.pow(1/Math.PI, 15));
140 c = 2 * Math.E * d;
141 d = 2 * Math.E * a;
142 System.out.println("e = "+Math.E+"; d = "+d+"; a = "+a);
143
144 // example 4
145 System.out.println("x = "+x);
146 x += m;
147 System.out.println("x = "+x+"; m = "+m);
148
149 // example 5
150 z = Math.pow(1/Math.PI, 15) + st.zero/Math.PI;
151 System.out.println("z = "+z);
152 }
153
154
155 void hand_optimized() {
156 int k, m;
157
158 a_opt = st.a_one;
159 c_opt = st.a_one;
160 d_opt = st.a_one;
161 x_opt = st.a_one;
162
163 // example 1
164 for(k = 0; k < 16386; k++) {
165 st.increment_opt();
166 }
167 System.out.println("gl_opt = "+st.gl_opt+" after incrementing it 16386 times.");
168 st.gl_opt -= 16386;
169 System.out.println("gl_opt = "+st.gl_opt+" after subtracting 16386.");
170
171 // example 2
172 m = 32769;
173 b_opt = c_opt * 32769;
174 System.out.println("c_opt = "+c_opt+"; b_opt = "+b_opt);
175
176 // example 3
177 double e = 2.7182818284590452354;
178 a_opt = 2.7182818284590452354 / (a_opt * d_opt * Math.pow(0.3183098861837907, 15));
179 c_opt = 2 * 2.7182818284590452354 * d_opt;
180 d_opt = 2 * 2.7182818284590452354 * a_opt;
181 System.out.println("e = "+2.7182818284590452354+"; d_opt = "+d_opt+"; a_opt = "+a_opt);
182
183 // example 4
184 System.out.println("x_opt = "+x_opt);
185 x_opt += 32769;
186 System.out.println("x_opt = "+x_opt+"; m = "+m);
187
188 // example 5
189 z_opt = 3.4894092627910365E-8 + 0/3.14159265358979323846;
190 System.out.println("z_opt = "+z_opt);
191 }
192 }