/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class Main {
public static void expectEquals(int expected, int result) {
if (expected != result) {
throw new Error("Expected: " + expected + ", found: " + result);
}
}
public static void expectEquals(long expected, long result) {
if (expected != result) {
throw new Error("Expected: " + expected + ", found: " + result);
}
}
public static void main(String[] args) {
shlInt();
shlLong();
shrInt();
shrLong();
ushrInt();
ushrLong();
}
private static void shlInt() {
expectEquals(48, $opt$ShlConst2(12));
expectEquals(12, $opt$ShlConst0(12));
expectEquals(-48, $opt$Shl(-12, 2));
expectEquals(1024, $opt$Shl(32, 5));
expectEquals(7, $opt$Shl(7, 0));
expectEquals(14, $opt$Shl(7, 1));
expectEquals(0, $opt$Shl(0, 30));
expectEquals(1073741824L, $opt$Shl(1, 30));
expectEquals(Integer.MIN_VALUE, $opt$Shl(1, 31)); // overflow
expectEquals(Integer.MIN_VALUE, $opt$Shl(1073741824, 1)); // overflow
expectEquals(1073741824, $opt$Shl(268435456, 2));
// Only the 5 lower bits should be used for shifting (& 0x1f).
expectEquals(7, $opt$Shl(7, 32)); // 32 & 0x1f = 0
expectEquals(14, $opt$Shl(7, 33)); // 33 & 0x1f = 1
expectEquals(32, $opt$Shl(1, 101)); // 101 & 0x1f = 5
expectEquals(Integer.MIN_VALUE, $opt$Shl(1, -1)); // -1 & 0x1f = 31
expectEquals(14, $opt$Shl(7, -31)); // -31 & 0x1f = 1
expectEquals(7, $opt$Shl(7, -32)); // -32 & 0x1f = 0
expectEquals(-536870912, $opt$Shl(7, -3)); // -3 & 0x1f = 29
expectEquals(Integer.MIN_VALUE, $opt$Shl(7, Integer.MAX_VALUE));
expectEquals(7, $opt$Shl(7, Integer.MIN_VALUE));
}
private static void shlLong() {
expectEquals(48L, $opt$ShlConst2(12L));
expectEquals(12L, $opt$ShlConst0(12L));
expectEquals(-48L, $opt$Shl(-12L, 2L));
expectEquals(1024L, $opt$Shl(32L, 5L));
expectEquals(7L, $opt$Shl(7L, 0L));
expectEquals(14L, $opt$Shl(7L, 1L));
expectEquals(0L, $opt$Shl(0L, 30L));
expectEquals(1073741824L, $opt$Shl(1L, 30L));
expectEquals(2147483648L, $opt$Shl(1L, 31L));
expectEquals(2147483648L, $opt$Shl(1073741824L, 1L));
// Long shifts can use up to 6 lower bits.
expectEquals(4294967296L, $opt$Shl(1L, 32L));
expectEquals(60129542144L, $opt$Shl(7L, 33L));
expectEquals(Long.MIN_VALUE, $opt$Shl(1L, 63L)); // overflow
// Only the 6 lower bits should be used for shifting (& 0x3f).
expectEquals(7L, $opt$Shl(7L, 64L)); // 64 & 0x3f = 0
expectEquals(14L, $opt$Shl(7L, 65L)); // 65 & 0x3f = 1
expectEquals(137438953472L, $opt$Shl(1L, 101L)); // 101 & 0x3f = 37
expectEquals(Long.MIN_VALUE, $opt$Shl(1L, -1L)); // -1 & 0x3f = 63
expectEquals(14L, $opt$Shl(7L, -63L)); // -63 & 0x3f = 1
expectEquals(7L, $opt$Shl(7L, -64L)); // -64 & 0x3f = 0
expectEquals(2305843009213693952L, $opt$Shl(1L, -3L)); // -3 & 0x3f = 61
expectEquals(Long.MIN_VALUE, $opt$Shl(7L, Long.MAX_VALUE));
expectEquals(7L, $opt$Shl(7L, Long.MIN_VALUE));
// Exercise some special cases handled by backends/simplifier.
expectEquals(24L, $opt$ShlConst1(12L));
expectEquals(0x2345678900000000L, $opt$ShlConst32(0x123456789L));
expectEquals(0x2490249000000000L, $opt$ShlConst33(0x12481248L));
expectEquals(0x4920492000000000L, $opt$ShlConst34(0x12481248L));
expectEquals(0x9240924000000000L, $opt$ShlConst35(0x12481248L));
}
private static void shrInt() {
expectEquals(3, $opt$ShrConst2(12));
expectEquals(12, $opt$ShrConst0(12));
expectEquals(-3, $opt$Shr(-12, 2));
expectEquals(1, $opt$Shr(32, 5));
expectEquals(7, $opt$Shr(7, 0));
expectEquals(3, $opt$Shr(7, 1));
expectEquals(0, $opt$Shr(0, 30));
expectEquals(0, $opt$Shr(1, 30));
expectEquals(-1, $opt$Shr(-1, 30));
expectEquals(0, $opt$Shr(Integer.MAX_VALUE, 31));
expectEquals(-1, $opt$Shr(Integer.MIN_VALUE, 31));
// Only the 5 lower bits should be used for shifting (& 0x1f).
expectEquals(7, $opt$Shr(7, 32)); // 32 & 0x1f = 0
expectEquals(3, $opt$Shr(7, 33)); // 33 & 0x1f = 1
expectEquals(0, $opt$Shr(1, -1)); // -1 & 0x1f = 31
expectEquals(3, $opt$Shr(7, -31)); // -31 & 0x1f = 1
expectEquals(7, $opt$Shr(7, -32)); // -32 & 0x1f = 0
expectEquals(-4, $opt$Shr(Integer.MIN_VALUE, -3)); // -3 & 0x1f = 29
expectEquals(0, $opt$Shr(7, Integer.MAX_VALUE));
expectEquals(7, $opt$Shr(7, Integer.MIN_VALUE));
}
private static void shrLong() {
expectEquals(3L, $opt$ShrConst2(12L));
expectEquals(12L, $opt$ShrConst0(12L));
expectEquals(-3L, $opt$Shr(-12L, 2L));
expectEquals(1, $opt$Shr(32, 5));
expectEquals(7L, $opt$Shr(7L, 0L));
expectEquals(3L, $opt$Shr(7L, 1L));
expectEquals(0L, $opt$Shr(0L, 30L));
expectEquals(0L, $opt$Shr(1L, 30L));
expectEquals(-1L, $opt$Shr(-1L, 30L));
expectEquals(1L, $opt$Shr(1073741824L, 30L));
expectEquals(1L, $opt$Shr(2147483648L, 31L));
expectEquals(1073741824L, $opt$Shr(2147483648L, 1L));
// Long shifts can use up to 6 lower bits.
expectEquals(1L, $opt$Shr(4294967296L, 32L));
expectEquals(7L, $opt$Shr(60129542144L, 33L));
expectEquals(0L, $opt$Shr(Long.MAX_VALUE, 63L));
expectEquals(-1L, $opt$Shr(Long.MIN_VALUE, 63L));
// Only the 6 lower bits should be used for shifting (& 0x3f).
expectEquals(7L, $opt$Shr(7L, 64L)); // 64 & 0x3f = 0
expectEquals(3L, $opt$Shr(7L, 65L)); // 65 & 0x3f = 1
expectEquals(-1L, $opt$Shr(Long.MIN_VALUE, -1L)); // -1 & 0x3f = 63
expectEquals(3L, $opt$Shr(7L, -63L)); // -63 & 0x3f = 1
expectEquals(7L, $opt$Shr(7L, -64L)); // -64 & 0x3f = 0
expectEquals(1L, $opt$Shr(2305843009213693952L, -3L)); // -3 & 0x3f = 61
expectEquals(-4L, $opt$Shr(Integer.MIN_VALUE, -3)); // -3 & 0x1f = 29
expectEquals(0L, $opt$Shr(7L, Long.MAX_VALUE));
expectEquals(7L, $opt$Shr(7L, Long.MIN_VALUE));
}
private static void ushrInt() {
expectEquals(3, $opt$UShrConst2(12));
expectEquals(12, $opt$UShrConst0(12));
expectEquals(1073741821, $opt$UShr(-12, 2));
expectEquals(1, $opt$UShr(32, 5));
expectEquals(7, $opt$UShr(7, 0));
expectEquals(3, $opt$UShr(7, 1));
expectEquals(0, $opt$UShr(0, 30));
expectEquals(0, $opt$UShr(1, 30));
expectEquals(3, $opt$UShr(-1, 30));
expectEquals(0, $opt$UShr(Integer.MAX_VALUE, 31));
expectEquals(1, $opt$UShr(Integer.MIN_VALUE, 31));
// Only the 5 lower bits should be used for shifting (& 0x1f).
expectEquals(7, $opt$UShr(7, 32)); // 32 & 0x1f = 0
expectEquals(3, $opt$UShr(7, 33)); // 33 & 0x1f = 1
expectEquals(0, $opt$UShr(1, -1)); // -1 & 0x1f = 31
expectEquals(3, $opt$UShr(7, -31)); // -31 & 0x1f = 1
expectEquals(7, $opt$UShr(7, -32)); // -32 & 0x1f = 0
expectEquals(4, $opt$UShr(Integer.MIN_VALUE, -3)); // -3 & 0x1f = 29
expectEquals(0, $opt$UShr(7, Integer.MAX_VALUE));
expectEquals(7, $opt$UShr(7, Integer.MIN_VALUE));
}
private static void ushrLong() {
expectEquals(3L, $opt$UShrConst2(12L));
expectEquals(12L, $opt$UShrConst0(12L));
expectEquals(4611686018427387901L, $opt$UShr(-12L, 2L));
expectEquals(1, $opt$UShr(32, 5));
expectEquals(7L, $opt$UShr(7L, 0L));
expectEquals(3L, $opt$UShr(7L, 1L));
expectEquals(0L, $opt$UShr(0L, 30L));
expectEquals(0L, $opt$UShr(1L, 30L));
expectEquals(17179869183L, $opt$UShr(-1L, 30L));
expectEquals(1L, $opt$UShr(1073741824L, 30L));
expectEquals(1L, $opt$UShr(2147483648L, 31L));
expectEquals(1073741824L, $opt$UShr(2147483648L, 1L));
// Long shifts can use use up to 6 lower bits.
expectEquals(1L, $opt$UShr(4294967296L, 32L));
expectEquals(7L, $opt$UShr(60129542144L, 33L));
expectEquals(0L, $opt$UShr(Long.MAX_VALUE, 63L));
expectEquals(1L, $opt$UShr(Long.MIN_VALUE, 63L));
// Only the 6 lower bits should be used for shifting (& 0x3f).
expectEquals(7L, $opt$UShr(7L, 64L)); // 64 & 0x3f = 0
expectEquals(3L, $opt$UShr(7L, 65L)); // 65 & 0x3f = 1
expectEquals(1L, $opt$UShr(Long.MIN_VALUE, -1L)); // -1 & 0x3f = 63
expectEquals(3L, $opt$UShr(7L, -63L)); // -63 & 0x3f = 1
expectEquals(7L, $opt$UShr(7L, -64L)); // -64 & 0x3f = 0
expectEquals(1L, $opt$UShr(2305843009213693952L, -3L)); // -3 & 0x3f = 61
expectEquals(4L, $opt$UShr(Long.MIN_VALUE, -3L)); // -3 & 0x3f = 61
expectEquals(0L, $opt$UShr(7L, Long.MAX_VALUE));
expectEquals(7L, $opt$UShr(7L, Long.MIN_VALUE));
}
static int $opt$Shl(int a, int b) {
return a << b;
}
static long $opt$Shl(long a, long b) {
return a << b;
}
static int $opt$Shr(int a, int b) {
return a >> b;
}
static long $opt$Shr(long a, long b) {
return a >> b;
}
static int $opt$UShr(int a, int b) {
return a >>> b;
}
static long $opt$UShr(long a, long b) {
return a >>> b;
}
static int $opt$ShlConst2(int a) {
return a << 2;
}
static long $opt$ShlConst2(long a) {
return a << 2L;
}
static int $opt$ShrConst2(int a) {
return a >> 2;
}
static long $opt$ShrConst2(long a) {
return a >> 2L;
}
static int $opt$UShrConst2(int a) {
return a >>> 2;
}
static long $opt$UShrConst2(long a) {
return a >>> 2L;
}
static int $opt$ShlConst0(int a) {
return a << 0;
}
static long $opt$ShlConst0(long a) {
return a << 0L;
}
static int $opt$ShrConst0(int a) {
return a >> 0;
}
static long $opt$ShrConst0(long a) {
return a >> 0L;
}
static int $opt$UShrConst0(int a) {
return a >>> 0;
}
static long $opt$UShrConst0(long a) {
return a >>> 0L;
}
static long $opt$ShlConst1(long a) {
return a << 1L;
}
static long $opt$ShlConst32(long a) {
return a << 32L;
}
static long $opt$ShlConst33(long a) {
return a << 33L;
}
static long $opt$ShlConst34(long a) {
return a << 34L;
}
static long $opt$ShlConst35(long a) {
return a << 35L;
}
}