215 lines
7.1 KiB
Java
215 lines
7.1 KiB
Java
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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public class TestSignum {
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/// CHECK-START: int TestSignum.signByte(byte) builder (after)
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/// CHECK-DAG: <<Result:i\d+>> Compare
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signByte(byte) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static int signByte(byte x) {
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return Integer.signum(x);
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}
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/// CHECK-START: int TestSignum.signShort(short) builder (after)
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/// CHECK-DAG: <<Result:i\d+>> Compare
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signShort(short) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static int signShort(short x) {
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return Integer.signum(x);
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}
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/// CHECK-START: int TestSignum.signChar(char) builder (after)
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/// CHECK-DAG: <<Result:i\d+>> Compare
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signChar(char) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static int signChar(char x) {
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return Integer.signum(x);
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}
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/// CHECK-START: int TestSignum.signInt(int) builder (after)
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/// CHECK-DAG: <<Result:i\d+>> Compare
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signInt(int) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static int signInt(int x) {
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return Integer.signum(x);
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}
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/// CHECK-START: int TestSignum.signLong(long) builder (after)
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/// CHECK-DAG: <<Result:i\d+>> Compare
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signLong(long) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static int signLong(long x) {
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return Long.signum(x);
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}
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/// CHECK-START: int TestSignum.signBoolean(boolean) builder (after)
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/// CHECK-DAG: <<Zero:i\d+>> IntConstant 0
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/// CHECK-DAG: <<One:i\d+>> IntConstant 1
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/// CHECK-DAG: <<Phi:i\d+>> Phi [<<One>>,<<Zero>>]
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/// CHECK-DAG: <<Result:i\d+>> Compare [<<Phi>>,<<Zero>>]
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signBoolean(boolean) builder (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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/// CHECK-START: int TestSignum.signBoolean(boolean) select_generator (after)
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/// CHECK-DAG: <<Arg:z\d+>> ParameterValue
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/// CHECK-DAG: <<Zero:i\d+>> IntConstant 0
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/// CHECK-DAG: <<One:i\d+>> IntConstant 1
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/// CHECK-DAG: <<Sel:i\d+>> Select [<<Zero>>,<<One>>,<<Arg>>]
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/// CHECK-DAG: <<Result:i\d+>> Compare [<<Sel>>,<<Zero>>]
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signBoolean(boolean) select_generator (after)
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/// CHECK-NOT: Phi
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/// CHECK-START: int TestSignum.signBoolean(boolean) instruction_simplifier$after_bce (after)
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/// CHECK-DAG: <<Arg:z\d+>> ParameterValue
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/// CHECK-DAG: <<Zero:i\d+>> IntConstant 0
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/// CHECK-DAG: <<Result:i\d+>> Compare [<<Arg>>,<<Zero>>]
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/// CHECK-DAG: Return [<<Result>>]
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/// CHECK-START: int TestSignum.signBoolean(boolean) instruction_simplifier$after_bce (after)
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/// CHECK-NOT: Select
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private static int signBoolean(boolean x) {
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// Note: D8 would replace the ternary expression `x ? 1 : 0` with `x`
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// but explicit `if` is preserved.
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int src_x;
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if (x) {
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src_x = 1;
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} else {
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src_x = 0;
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}
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return Integer.signum(src_x);
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}
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public static void testSignBoolean() {
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expectEquals(0, signBoolean(false));
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expectEquals(1, signBoolean(true));
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}
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public static void testSignByte() {
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expectEquals(-1, signByte((byte)Byte.MIN_VALUE));
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expectEquals(-1, signByte((byte)-64));
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expectEquals(-1, signByte((byte)-1));
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expectEquals(0, signByte((byte)0));
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expectEquals(1, signByte((byte)1));
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expectEquals(1, signByte((byte)64));
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expectEquals(1, signByte((byte)Byte.MAX_VALUE));
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}
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public static void testSignShort() {
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expectEquals(-1, signShort((short)Short.MIN_VALUE));
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expectEquals(-1, signShort((short)-12345));
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expectEquals(-1, signShort((short)-1));
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expectEquals(0, signShort((short)0));
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expectEquals(1, signShort((short)1));
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expectEquals(1, signShort((short)12345));
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expectEquals(1, signShort((short)Short.MAX_VALUE));
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}
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public static void testSignChar() {
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expectEquals(0, signChar((char)0));
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expectEquals(1, signChar((char)1));
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expectEquals(1, signChar((char)12345));
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expectEquals(1, signChar((char)Character.MAX_VALUE));
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}
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public static void testSignInt() {
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expectEquals(-1, signInt(Integer.MIN_VALUE));
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expectEquals(-1, signInt(-12345));
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expectEquals(-1, signInt(-1));
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expectEquals(0, signInt(0));
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expectEquals(1, signInt(1));
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expectEquals(1, signInt(12345));
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expectEquals(1, signInt(Integer.MAX_VALUE));
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for (int i = -11; i <= 11; i++) {
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int expected = 0;
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if (i < 0) expected = -1;
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else if (i > 0) expected = 1;
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expectEquals(expected, signInt(i));
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}
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}
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public static void testSignLong() {
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expectEquals(-1, signLong(Long.MIN_VALUE));
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expectEquals(-1, signLong(-12345L));
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expectEquals(-1, signLong(-1L));
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expectEquals(0, signLong(0L));
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expectEquals(1, signLong(1L));
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expectEquals(1, signLong(12345L));
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expectEquals(1, signLong(Long.MAX_VALUE));
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expectEquals(-1, signLong(0x800000007FFFFFFFL));
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expectEquals(-1, signLong(0x80000000FFFFFFFFL));
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expectEquals(1, signLong(0x000000007FFFFFFFL));
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expectEquals(1, signLong(0x00000000FFFFFFFFL));
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expectEquals(1, signLong(0x7FFFFFFF7FFFFFFFL));
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expectEquals(1, signLong(0x7FFFFFFFFFFFFFFFL));
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for (long i = -11L; i <= 11L; i++) {
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int expected = 0;
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if (i < 0) expected = -1;
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else if (i > 0) expected = 1;
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expectEquals(expected, signLong(i));
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}
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for (long i = Long.MIN_VALUE; i <= Long.MIN_VALUE + 11L; i++) {
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expectEquals(-1, signLong(i));
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}
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for (long i = Long.MAX_VALUE; i >= Long.MAX_VALUE - 11L; i--) {
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expectEquals(1, signLong(i));
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}
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}
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public static void main() {
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testSignBoolean();
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testSignByte();
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testSignShort();
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testSignChar();
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testSignInt();
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testSignLong();
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System.out.println("TestSignum passed");
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}
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private static void expectEquals(int expected, int result) {
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if (expected != result) {
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throw new Error("Expected: " + expected + ", found: " + result);
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}
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}
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}
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