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8352512: TestVectorZeroCount: counter not reset between iterations #24134

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8352512: TestVectorZeroCount: counter not reset between iterations #24134

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15 changes: 11 additions & 4 deletions test/hotspot/jtreg/compiler/vectorization/TestVectorZeroCount.java
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Original file line number Diff line number Diff line change
Expand Up @@ -50,16 +50,21 @@ public class TestVectorZeroCount {
private static final long[] LONG_EXPECTED_TRAILING = new long[SIZE];
private static final long[] LONG_RESULT_TRAILING = new long[SIZE];

private static int intCounter = Integer.MIN_VALUE;
private static int longIterations = 100_000_000;
private static final int INT_START_INDEX = Integer.MIN_VALUE;
private static final int INT_END_INDEX = Integer.MAX_VALUE;
private static final int LONG_START_INDEX = 0;
private static final int LONG_END_INDEX = 100_000_000;

private static int intCounter;
private static int longCounter;

public static boolean testInt() {
boolean done = false;

// Non-vectorized loop as baseline (not vectorized because source array is initialized)
for (int i = 0; i < SIZE; ++i) {
INT_VALUES[i] = intCounter++;
if (intCounter == Integer.MAX_VALUE) {
if (intCounter == INT_END_INDEX) {
done = true;
}
INT_EXPECTED_LEADING[i] = Integer.numberOfLeadingZeros(INT_VALUES[i]);
Expand Down Expand Up @@ -92,7 +97,7 @@ public static boolean testLong() {
for (int i = 0; i < SIZE; ++i) {
// Use random values because the long range is too large to iterate over it
LONG_VALUES[i] = RANDOM.nextLong();
if (longIterations-- == 0) {
if (longCounter++ == LONG_END_INDEX) {
done = true;
}
LONG_EXPECTED_LEADING[i] = Long.numberOfLeadingZeros(LONG_VALUES[i]);
Expand Down Expand Up @@ -121,6 +126,8 @@ public static boolean testLong() {
public static void main(String[] args) {
// Run twice to make sure compiled code is used from the beginning
for (int i = 0; i < 2; ++i) {
intCounter = INT_START_INDEX;
longCounter = LONG_START_INDEX;
while (!testLong()) ;
while (!testInt()) ;
}
Expand Down