/*
* Copyright ( C ) 2019 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 .
*/
/**
* Test corner cases for loop vectorizer .
*/
public class Main {
/// CHECK-START: void Main.$noinline$testDivZeroCheck() loop_optimization (before)
/// CHECK: DivZeroCheck
/// CHECK-NOT: DivZeroCheck
/// CHECK-START: void Main.$noinline$testDivZeroCheck() loop_optimization (after)
/// CHECK: DivZeroCheck
public static void $noinline$testDivZeroCheck() {
int [] a = new int [10 ];
for (int i = 0 ; i < a.length; ++i) {
int x = 42 / 0 ; // unused but throwing
a[i] = 42 ;
}
}
static class Base {}
static class Foo extends Base {}
static class Bar extends Base {}
/// CHECK-START: void Main.$noinline$testCheckCast() loop_optimization (before)
/// CHECK: CheckCast
/// CHECK-NOT: CheckCast
/// CHECK-START: void Main.$noinline$testCheckCast() loop_optimization (after)
/// CHECK: CheckCast
public static void $noinline$testCheckCast() {
Base base = new Foo();
int [] a = new int [10 ];
for (int i = 0 ; i < a.length; ++i) {
Bar bar = (Bar) base; // unused but throwing
a[i] = 42 ;
}
}
/// CHECK-START: void Main.$noinline$testBoundsCheck() loop_optimization (before)
/// CHECK: BoundsCheck
/// CHECK-NOT: BoundsCheck
/// CHECK-START: void Main.$noinline$testBoundsCheck() loop_optimization (after)
/// CHECK: BoundsCheck
public static void $noinline$testBoundsCheck() {
int [] a = new int [10 ];
for (int i = 0 ; i < a.length; ++i) {
int x = a[11 ]; // unused but throwing
a[i] = 42 ;
}
}
public static void main(String[] args) {
// We must not optimize any of the exceptions away.
try {
$noinline$testDivZeroCheck();
} catch (java.lang.ArithmeticException e) {
System.out.println("DivZeroCheck" );
}
try {
$noinline$testCheckCast();
} catch (java.lang.ClassCastException e) {
System.out.println("CheckCast" );
}
try {
$noinline$testBoundsCheck();
} catch (java.lang.ArrayIndexOutOfBoundsException e) {
System.out.println("BoundsCheck" );
}
}
}
Messung V0.5 in Prozent C=81 H=81 G=80
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-29)
¤
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