blob: ace956df2f0fbdf5b7372dcaed05a8d338646a82 [file] [log] [blame]
/*
* Copyright (C) 2016 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.
*/
public class Main {
/// CHECK-START: int Main.f2int(float) instruction_simplifier (before)
/// CHECK-DAG: <<Result:i\d+>> InvokeStaticOrDirect intrinsic:FloatFloatToIntBits
/// CHECK-DAG: Return [<<Result>>]
//
/// CHECK-START: int Main.f2int(float) instruction_simplifier (after)
// Note: The ArtMethod* (typed as int or long) is optional after sharpening.
/// CHECK-DAG: <<Raw:i\d+>> InvokeStaticOrDirect [<<Arg:f\d+>>{{(,[ij]\d+)?}}] intrinsic:FloatFloatToRawIntBits
/// CHECK-DAG: <<Cond:z\d+>> NotEqual [<<Arg>>,<<Arg>>]
/// CHECK-DAG: <<Result:i\d+>> Select [<<Raw>>,{{i\d+}},<<Cond>>]
/// CHECK-DAG: Return [<<Result>>]
private static int f2int(float f) {
return Float.floatToIntBits(f);
}
/// CHECK-START: long Main.d2long(double) instruction_simplifier (before)
/// CHECK-DAG: <<Result:j\d+>> InvokeStaticOrDirect intrinsic:DoubleDoubleToLongBits
/// CHECK-DAG: Return [<<Result>>]
//
/// CHECK-START: long Main.d2long(double) instruction_simplifier (after)
// Note: The ArtMethod* (typed as int or long) is optional after sharpening.
/// CHECK-DAG: <<Raw:j\d+>> InvokeStaticOrDirect [<<Arg:d\d+>>{{(,[ij]\d+)?}}] intrinsic:DoubleDoubleToRawLongBits
/// CHECK-DAG: <<Cond:z\d+>> NotEqual [<<Arg>>,<<Arg>>]
/// CHECK-DAG: <<Result:j\d+>> Select [<<Raw>>,{{j\d+}},<<Cond>>]
/// CHECK-DAG: Return [<<Result>>]
private static long d2long(double d) {
return Double.doubleToLongBits(d);
}
public static void main(String args[]) {
// A few distinct numbers.
expectEquals32(0xff800000, f2int(Float.NEGATIVE_INFINITY));
expectEquals32(0xbf800000, f2int(-1.0f));
expectEquals32(0x80000000, f2int(-0.0f));
expectEquals32(0x00000000, f2int(+0.0f));
expectEquals32(0x3f800000, f2int(+1.0f));
expectEquals32(0x7f800000, f2int(Float.POSITIVE_INFINITY));
// A few others.
for (int i = 0; i <= 100; i++) {
expectEquals32(i, f2int(Float.intBitsToFloat(i)));
}
// A few NaN numbers.
float[] fvals = {
Float.intBitsToFloat(0x7f800001),
Float.intBitsToFloat(0x7fa00000),
Float.intBitsToFloat(0x7fc00000),
Float.intBitsToFloat(0x7fffffff),
Float.intBitsToFloat(0xff800001),
Float.intBitsToFloat(0xffa00000),
Float.intBitsToFloat(0xffc00000),
Float.intBitsToFloat(0xffffffff)
};
for (int i = 0; i < fvals.length; i++) {
expectEquals32(0x7fc00000, f2int(fvals[i]));
}
// A few distinct numbers.
expectEquals64(0xfff0000000000000L, d2long(Double.NEGATIVE_INFINITY));
expectEquals64(0xbff0000000000000L, d2long(-1.0d));
expectEquals64(0x8000000000000000L, d2long(-0.0d));
expectEquals64(0x0000000000000000L, d2long(+0.0d));
expectEquals64(0x3ff0000000000000L, d2long(+1.0d));
expectEquals64(0x7ff0000000000000L, d2long(Double.POSITIVE_INFINITY));
// A few others.
for (long l = 0; l <= 100; l++) {
expectEquals64(l, d2long(Double.longBitsToDouble(l)));
}
// A few NaN numbers.
double[] dvals = {
Double.longBitsToDouble(0x7ff0000000000001L),
Double.longBitsToDouble(0x7ff4000000000000L),
Double.longBitsToDouble(0x7ff8000000000000L),
Double.longBitsToDouble(0x7fffffffffffffffL),
Double.longBitsToDouble(0xfff0000000000001L),
Double.longBitsToDouble(0xfff4000000000000L),
Double.longBitsToDouble(0xfff8000000000000L),
Double.longBitsToDouble(0xffffffffffffffffL)
};
for (int i = 0; i < dvals.length; i++) {
expectEquals64(0x7ff8000000000000L, d2long(dvals[i]));
}
System.out.println("passed");
}
private static void expectEquals32(int expected, int result) {
if (expected != result) {
throw new Error("Expected: "
+ Integer.toHexString(expected)
+ ", found: "
+ Integer.toHexString(result));
}
}
private static void expectEquals64(long expected, long result) {
if (expected != result) {
throw new Error("Expected: "
+ Long.toHexString(expected)
+ ", found: "
+ Long.toHexString(result));
}
}
}