/*
* 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(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad1(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad1(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-NOT: InvokeStaticOrDirect intrinsic:MathAbsInt
//
// NOTE: for direct 32-bit operands, this is not an ABS.
static int sad1(int x, int y) {
return x >= y ? x - y : y - x;
}
/// CHECK-START: int Main.sad2(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad2(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:i\d+>> InvokeStaticOrDirect intrinsic:MathAbsInt
/// CHECK-DAG: Return [<<Intrin>>]
static int sad2(int x, int y) {
int diff = x - y;
if (diff < 0) diff = -diff;
return diff;
}
/// CHECK-START: int Main.sad3(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad3(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:i\d+>> InvokeStaticOrDirect intrinsic:MathAbsInt
/// CHECK-DAG: Return [<<Intrin>>]
static int sad3(int x, int y) {
int diff = x - y;
return diff >= 0 ? diff : -diff;
}
/// CHECK-START: int Main.sad3Alt(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:i\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: int Main.sad3Alt(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:i\d+>> InvokeStaticOrDirect intrinsic:MathAbsInt
/// CHECK-DAG: Return [<<Intrin>>]
static int sad3Alt(int x, int y) {
int diff = x - y;
return 0 <= diff ? diff : -diff;
}
/// CHECK-START: long Main.sadL1(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL1(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:j\d+>> InvokeStaticOrDirect intrinsic:MathAbsLong
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL1(int x, int y) {
long xl = x;
long yl = y;
return xl >= yl ? xl - yl : yl - xl;
}
/// CHECK-START: long Main.sadL2(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL2(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:j\d+>> InvokeStaticOrDirect intrinsic:MathAbsLong
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL2(int x, int y) {
long diff = x - y;
if (diff < 0L) diff = -diff;
return diff;
}
/// CHECK-START: long Main.sadL3(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL3(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:j\d+>> InvokeStaticOrDirect intrinsic:MathAbsLong
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL3(int x, int y) {
long diff = x - y;
return diff >= 0L ? diff : -diff;
}
/// CHECK-START: long Main.sadL3Alt(int, int) instruction_simplifier$after_inlining (before)
/// CHECK-DAG: <<Select:j\d+>> Select
/// CHECK-DAG: Return [<<Select>>]
//
/// CHECK-START: long Main.sadL3Alt(int, int) instruction_simplifier$after_inlining (after)
/// CHECK-DAG: <<Intrin:j\d+>> InvokeStaticOrDirect intrinsic:MathAbsLong
/// CHECK-DAG: Return [<<Intrin>>]
static long sadL3Alt(int x, int y) {
long diff = x - y;
return 0L <= diff ? diff : -diff;
}
public static void main(String[] args) {
// 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
};
for (int i = 0; i < interesting.length; i++) {
for (int j = 0; j < interesting.length; j++) {
int x = interesting[i];
int y = interesting[j];
int e1 = x >= y ? x - y : y - x; // still select
expectEquals(e1, sad1(x, y));
int e2 = Math.abs(x - y); // pure abs
expectEquals(e2, sad2(x, y));
expectEquals(e2, sad3(x, y));
expectEquals(e2, sad3Alt(x, y));
long eL1 = Math.abs(((long)x) - ((long)y)); // now, different, but abs
expectEquals(eL1, sadL1(x, y));
long eL2 = Math.abs((long)(x - y)); // also, different, but abs
expectEquals(eL2, sadL2(x, y));
expectEquals(eL2, sadL3(x, y));
expectEquals(eL2, 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);
}
}
}