/*
* Copyright (C) 2017 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.
*/
/**
* Tests for SAD (sum of absolute differences).
*/
public class Main {
// TODO: lower precision still coming, b/64091002
private static byte sadByte2Byte(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
byte sad = 0;
for (int i = 0; i < min_length; i++) {
sad += Math.abs(b1[i] - b2[i]);
}
return sad;
}
private static byte sadByte2ByteAlt(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
byte sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
sad += s >= p ? s - p : p - s;
}
return sad;
}
private static byte sadByte2ByteAlt2(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
byte sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
int x = s - p;
if (x < 0) x = -x;
sad += x;
}
return sad;
}
private static short sadByte2Short(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
short sad = 0;
for (int i = 0; i < min_length; i++) {
sad += Math.abs(b1[i] - b2[i]);
}
return sad;
}
private static short sadByte2ShortAlt(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
short sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
sad += s >= p ? s - p : p - s;
}
return sad;
}
private static short sadByte2ShortAlt2(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
short sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
int x = s - p;
if (x < 0) x = -x;
sad += x;
}
return sad;
}
/// CHECK-START: int Main.sadByte2Int(byte[], byte[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub:i\d+>> Sub [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Intrin:i\d+>> Abs [<<Sub>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Intrin>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
/// CHECK-START-{ARM64,MIPS64}: int Main.sadByte2Int(byte[], byte[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons16:i\d+>> IntConstant 16 loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [<<Cons0>>] loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load1:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load2:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi2>>,<<Load1>>,<<Load2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons16>>] loop:<<Loop>> outer_loop:none
private static int sadByte2Int(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
sad += Math.abs(b1[i] - b2[i]);
}
return sad;
}
/// CHECK-START: int Main.sadByte2IntAlt(byte[], byte[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub:i\d+>> Sub [<<Get2>>,<<Get1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Intrin:i\d+>> Abs [<<Sub>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Intrin>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
/// CHECK-START-{ARM64,MIPS64}: int Main.sadByte2IntAlt(byte[], byte[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons16:i\d+>> IntConstant 16 loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [<<Cons0>>] loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load1:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load2:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi2>>,<<Load2>>,<<Load1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons16>>] loop:<<Loop>> outer_loop:none
private static int sadByte2IntAlt(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
sad += s >= p ? s - p : p - s;
}
return sad;
}
/// CHECK-START: int Main.sadByte2IntAlt2(byte[], byte[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub:i\d+>> Sub [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Intrin:i\d+>> Abs [<<Sub>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Intrin>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
/// CHECK-START-{ARM64,MIPS64}: int Main.sadByte2IntAlt2(byte[], byte[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons16:i\d+>> IntConstant 16 loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [<<Cons0>>] loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load1:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load2:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi2>>,<<Load1>>,<<Load2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons16>>] loop:<<Loop>> outer_loop:none
private static int sadByte2IntAlt2(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
byte s = b1[i];
byte p = b2[i];
int x = s - p;
if (x < 0) x = -x;
sad += x;
}
return sad;
}
/// CHECK-START: long Main.sadByte2Long(byte[], byte[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<ConsL:j\d+>> LongConstant 0 loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:j\d+>> Phi [<<ConsL>>,{{j\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Cnv1:j\d+>> TypeConversion [<<Get1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Cnv2:j\d+>> TypeConversion [<<Get2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub:j\d+>> Sub [<<Cnv1>>,<<Cnv2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Intrin:j\d+>> Abs [<<Sub>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Intrin>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
/// CHECK-START-{ARM64,MIPS64}: long Main.sadByte2Long(byte[], byte[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons16:i\d+>> IntConstant 16 loop:none
/// CHECK-DAG: <<ConsL:j\d+>> LongConstant 0 loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [<<ConsL>>] loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load1:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load2:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi2>>,<<Load1>>,<<Load2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons16>>] loop:<<Loop>> outer_loop:none
private static long sadByte2Long(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
long sad = 0;
for (int i = 0; i < min_length; i++) {
long x = b1[i];
long y = b2[i];
sad += Math.abs(x - y);
}
return sad;
}
/// CHECK-START: long Main.sadByte2LongAt1(byte[], byte[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<ConsL:j\d+>> LongConstant 1 loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:j\d+>> Phi [<<ConsL>>,{{j\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:b\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Cnv1:j\d+>> TypeConversion [<<Get1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Cnv2:j\d+>> TypeConversion [<<Get2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub:j\d+>> Sub [<<Cnv1>>,<<Cnv2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Intrin:j\d+>> Abs [<<Sub>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Intrin>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
/// CHECK-START-{ARM64,MIPS64}: long Main.sadByte2LongAt1(byte[], byte[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons16:i\d+>> IntConstant 16 loop:none
/// CHECK-DAG: <<ConsL:j\d+>> LongConstant 1 loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [<<ConsL>>] loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load1:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Load2:d\d+>> VecLoad [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi2>>,<<Load1>>,<<Load2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons16>>] loop:<<Loop>> outer_loop:none
private static long sadByte2LongAt1(byte[] b1, byte[] b2) {
int min_length = Math.min(b1.length, b2.length);
long sad = 1; // starts at 1
for (int i = 0; i < min_length; i++) {
long x = b1[i];
long y = b2[i];
sad += Math.abs(x - y);
}
return sad;
}
public static void main(String[] args) {
// Cross-test the two most extreme values individually.
byte[] b1 = { 0, -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
byte[] b2 = { 0, 127, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
expectEquals(-1, sadByte2Byte(b1, b2));
expectEquals(-1, sadByte2Byte(b2, b1));
expectEquals(-1, sadByte2ByteAlt(b1, b2));
expectEquals(-1, sadByte2ByteAlt(b2, b1));
expectEquals(-1, sadByte2ByteAlt2(b1, b2));
expectEquals(-1, sadByte2ByteAlt2(b2, b1));
expectEquals(255, sadByte2Short(b1, b2));
expectEquals(255, sadByte2Short(b2, b1));
expectEquals(255, sadByte2ShortAlt(b1, b2));
expectEquals(255, sadByte2ShortAlt(b2, b1));
expectEquals(255, sadByte2ShortAlt2(b1, b2));
expectEquals(255, sadByte2ShortAlt2(b2, b1));
expectEquals(255, sadByte2Int(b1, b2));
expectEquals(255, sadByte2Int(b2, b1));
expectEquals(255, sadByte2IntAlt(b1, b2));
expectEquals(255, sadByte2IntAlt(b2, b1));
expectEquals(255, sadByte2IntAlt2(b1, b2));
expectEquals(255, sadByte2IntAlt2(b2, b1));
expectEquals(255, sadByte2Long(b1, b2));
expectEquals(255L, sadByte2Long(b2, b1));
expectEquals(256L, sadByte2LongAt1(b1, b2));
expectEquals(256L, sadByte2LongAt1(b2, b1));
// Use cross-values to test all cases.
// One for scalar cleanup.
int n = 256;
int m = n * n + 1;
int k = 0;
b1 = new byte[m];
b2 = new byte[m];
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
b1[k] = (byte) i;
b2[k] = (byte) j;
k++;
}
}
b1[k] = 10;
b2[k] = 2;
expectEquals(8, sadByte2Byte(b1, b2));
expectEquals(8, sadByte2ByteAlt(b1, b2));
expectEquals(8, sadByte2ByteAlt2(b1, b2));
expectEquals(21768, sadByte2Short(b1, b2));
expectEquals(21768, sadByte2ShortAlt(b1, b2));
expectEquals(21768, sadByte2ShortAlt2(b1, b2));
expectEquals(5592328, sadByte2Int(b1, b2));
expectEquals(5592328, sadByte2IntAlt(b1, b2));
expectEquals(5592328, sadByte2IntAlt2(b1, b2));
expectEquals(5592328L, sadByte2Long(b1, b2));
expectEquals(5592329L, sadByte2LongAt1(b1, b2));
System.out.println("passed");
}
private static void expectEquals(int expected, int result) {
if (expected != result) {
throw new Error("Expected: " + expected + ", found: " + result);
}
}
private static void expectEquals(long expected, long result) {
if (expected != result) {
throw new Error("Expected: " + expected + ", found: " + result);
}
}
}