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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.sad1(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad1(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:i\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static int sad1(short x, short y) {
return x >= y ? x - y : y - x;
}
/// CHECK-START: int Main.sad2(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad2(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:i\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static int sad2(short x, short y) {
int diff = x - y;
if (diff < 0) diff = -diff;
return diff;
}
/// CHECK-START: int Main.sad3(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad3(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:i\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static int sad3(short x, short y) {
int diff = x - y;
return diff >= 0 ? diff : -diff;
}
/// CHECK-START: int Main.sad3Alt(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad3Alt(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:i\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static int sad3Alt(short x, short y) {
int diff = x - y;
return 0 <= diff ? diff : -diff;
}
/// CHECK-START: long Main.sadL1(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL1(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:j\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL1(short x, short y) {
long xl = x;
long yl = y;
return xl >= yl ? xl - yl : yl - xl;
}
/// CHECK-START: long Main.sadL2(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL2(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:j\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL2(short x, short y) {
long diff = x - y;
if (diff < 0L) diff = -diff;
return diff;
}
/// CHECK-START: long Main.sadL3(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL3(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:j\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL3(short x, short y) {
long diff = x - y;
return diff >= 0L ? diff : -diff;
}
/// CHECK-START: long Main.sadL3Alt(short, short) instruction_simplifier$after_gvn (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL3Alt(short, short) instruction_simplifier$after_gvn (after)
/// CHECK-DAG: <<Intrin:j\d+>> Abs
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL3Alt(short x, short y) {
long diff = x - y;
return 0L <= diff ? diff : -diff;
}
public static void main(String[] args) {
// Use cross-values to test all cases.
short[] interesting = {
(short) 0x0000, (short) 0x0001, (short) 0x007f,
(short) 0x0080, (short) 0x0081, (short) 0x00ff,
(short) 0x0100, (short) 0x0101, (short) 0x017f,
(short) 0x0180, (short) 0x0181, (short) 0x01ff,
(short) 0x7f00, (short) 0x7f01, (short) 0x7f7f,
(short) 0x7f80, (short) 0x7f81, (short) 0x7fff,
(short) 0x8000, (short) 0x8001, (short) 0x807f,
(short) 0x8080, (short) 0x8081, (short) 0x80ff,
(short) 0x8100, (short) 0x8101, (short) 0x817f,
(short) 0x8180, (short) 0x8181, (short) 0x81ff,
(short) 0xff00, (short) 0xff01, (short) 0xff7f,
(short) 0xff80, (short) 0xff81, (short) 0xffff
};
for (int i = 0; i < interesting.length; i++) {
for (int j = 0; j < interesting.length; j++) {
short x = interesting[i];
short y = interesting[j];
int e = Math.abs(x - y);
expectEquals(e, sad1(x, y));
expectEquals(e, sad2(x, y));
expectEquals(e, sad3(x, y));
expectEquals(e, sad3Alt(x, y));
expectEquals(e, sadL1(x, y));
expectEquals(e, sadL2(x, y));
expectEquals(e, sadL3(x, y));
expectEquals(e, sadL3Alt(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);
}
}
}