[vector] Intermittent failures in Long256VectorTests

[Vladimir Ivanov]

Hi,

I see intermittent failures in Long256VectorTests with the latest build:

test Long256VectorTests.mulLong256VectorTests(long[i * 5], 
long[cornerCaseValue(i)]): failure
java.lang.AssertionError: at index #3, input1 = 15, input2 = 
9223372036854775807 expected [9223372036854775793] but found 
[-9223371972430266383]

test Long256VectorTests.mulLong256VectorTests(long[i * 5], 
long[cornerCaseValue(i)], mask[i % 2]): failure
java.lang.AssertionError: at index #10, input1 = 50, input2 = 
9223372036854775807, mask = true expected [-50] but found [42949672910]

test Long256VectorTests.mulLong256VectorTests(long[i * 5], 
long[cornerCaseValue(i)], mask[true]): failure
java.lang.AssertionError: at index #3, input1 = 15, input2 = 
9223372036854775807, mask = true expected [9223372036854775793] but 
found [-9223371972430266383]

===============================================
jdk/incubator/vector/Long256VectorTests.java
Total tests run: 272, Failures: 3, Skips: 0
===============================================

Is it a known bug?

Best regards,
Vladimir Ivanov