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/*
* 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 {
/// CHECK-START: int Main.sadInt2Int(int[], int[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:i\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-{ARM,ARM64,MIPS64}: int Main.sadInt2Int(int[], int[]) loop_optimization (after)
/// CHECK-DAG: <<Cons:i\d+>> IntConstant {{2|4}} loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [{{i\d+}}] loop:none
/// CHECK-DAG: <<Phi:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Ld1:d\d+>> VecLoad [{{l\d+}},<<I:i\d+>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Ld2:d\d+>> VecLoad [{{l\d+}},<<I>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi>>,<<Ld1>>,<<Ld2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<I>>,<<Cons>>] loop:<<Loop>> outer_loop:none
private static int sadInt2Int(int[] x, int[] y) {
int min_length = Math.min(x.length, y.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
sad += Math.abs(x[i] - y[i]);
}
return sad;
}
/// CHECK-START: int Main.sadInt2IntAlt(int[], int[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub1:i\d+>> Sub [<<Get2>>,<<Get1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Sub2:i\d+>> Sub [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Select:i\d+>> Select [<<Sub2>>,<<Sub1>>,{{z\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi2>>,<<Select>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<Phi1>>,<<Cons1>>] loop:<<Loop>> outer_loop:none
//
// No ABS? No SAD!
//
/// CHECK-START: int Main.sadInt2IntAlt(int[], int[]) loop_optimization (after)
/// CHECK-NOT: VecSADAccumulate
private static int sadInt2IntAlt(int[] x, int[] y) {
int min_length = Math.min(x.length, y.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
int s = x[i];
int p = y[i];
sad += s >= p ? s - p : p - s;
}
return sad;
}
/// CHECK-START: int Main.sadInt2IntAlt2(int[], int[]) loop_optimization (before)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons1:i\d+>> IntConstant 1 loop:none
/// CHECK-DAG: <<Phi1:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Phi2:i\d+>> Phi [<<Cons0>>,{{i\d+}}] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get1:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:i\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-{ARM,ARM64,MIPS64}: int Main.sadInt2IntAlt2(int[], int[]) loop_optimization (after)
/// CHECK-DAG: <<Cons:i\d+>> IntConstant {{2|4}} loop:none
/// CHECK-DAG: <<Set:d\d+>> VecSetScalars [{{i\d+}}] loop:none
/// CHECK-DAG: <<Phi:d\d+>> Phi [<<Set>>,{{d\d+}}] loop:<<Loop:B\d+>> outer_loop:none
/// CHECK-DAG: <<Ld1:d\d+>> VecLoad [{{l\d+}},<<I:i\d+>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Ld2:d\d+>> VecLoad [{{l\d+}},<<I>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<SAD:d\d+>> VecSADAccumulate [<<Phi>>,<<Ld1>>,<<Ld2>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: Add [<<I>>,<<Cons>>] loop:<<Loop>> outer_loop:none
private static int sadInt2IntAlt2(int[] x, int[] y) {
int min_length = Math.min(x.length, y.length);
int sad = 0;
for (int i = 0; i < min_length; i++) {
int s = x[i];
int p = y[i];
int m = s - p;
if (m < 0) m = -m;
sad += m;
}
return sad;
}
/// CHECK-START: long Main.sadInt2Long(int[], int[]) 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:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:i\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.sadInt2Long(int[], int[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons4:i\d+>> IntConstant 4 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>>,<<Cons4>>] loop:<<Loop>> outer_loop:none
private static long sadInt2Long(int[] x, int[] y) {
int min_length = Math.min(x.length, y.length);
long sad = 0;
for (int i = 0; i < min_length; i++) {
long s = x[i];
long p = y[i];
sad += Math.abs(s - p);
}
return sad;
}
/// CHECK-START: long Main.sadInt2LongAt1(int[], int[]) 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:i\d+>> ArrayGet [{{l\d+}},<<Phi1>>] loop:<<Loop>> outer_loop:none
/// CHECK-DAG: <<Get2:i\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.sadInt2LongAt1(int[], int[]) loop_optimization (after)
/// CHECK-DAG: <<Cons0:i\d+>> IntConstant 0 loop:none
/// CHECK-DAG: <<Cons4:i\d+>> IntConstant 4 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>>,<<Cons4>>] loop:<<Loop>> outer_loop:none
private static long sadInt2LongAt1(int[] x, int[] y) {
int min_length = Math.min(x.length, y.length);
long sad = 1; // starts at 1
for (int i = 0; i < min_length; i++) {
long s = x[i];
long p = y[i];
sad += Math.abs(s - p);
}
return sad;
}
public static void main(String[] args) {
// Cross-test the two most extreme values individually.
int[] x = { 0, Integer.MAX_VALUE, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int[] y = { 0, Integer.MIN_VALUE, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
expectEquals(1, sadInt2Int(x, y));
expectEquals(1, sadInt2Int(y, x));
expectEquals(-1, sadInt2IntAlt(x, y));
expectEquals(-1, sadInt2IntAlt(y, x));
expectEquals(1, sadInt2IntAlt2(x, y));
expectEquals(1, sadInt2IntAlt2(y, x));
expectEquals(4294967295L, sadInt2Long(x, y));
expectEquals(4294967295L, sadInt2Long(y, x));
expectEquals(4294967296L, sadInt2LongAt1(x, y));
expectEquals(4294967296L, sadInt2LongAt1(y, x));
// Use cross-values for the interesting values.
int[] interesting = {
0x00000000, 0x00000001, 0x00007fff, 0x00008000, 0x00008001, 0x0000ffff,
0x00010000, 0x00010001, 0x00017fff, 0x00018000, 0x00018001, 0x0001ffff,
0x7fff0000, 0x7fff0001, 0x7fff7fff, 0x7fff8000, 0x7fff8001, 0x7fffffff,
0x80000000, 0x80000001, 0x80007fff, 0x80008000, 0x80008001, 0x8000ffff,
0x80010000, 0x80010001, 0x80017fff, 0x80018000, 0x80018001, 0x8001ffff,
0xffff0000, 0xffff0001, 0xffff7fff, 0xffff8000, 0xffff8001, 0xffffffff
};
int n = interesting.length;
int m = n * n + 1;
x = new int[m];
y = new int[m];
int k = 0;
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
x[k] = interesting[i];
y[k] = interesting[j];
k++;
}
}
x[k] = 10;
y[k] = 2;
expectEquals(8, sadInt2Int(x, y));
expectEquals(-13762600, sadInt2IntAlt(x, y));
expectEquals(8, sadInt2IntAlt2(x, y));
expectEquals(2010030931928L, sadInt2Long(x, y));
expectEquals(2010030931929L, sadInt2LongAt1(x, y));
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);
}
}
}