ValueLayout defines some layout constants such as JAVA_INT, JAVA_FLOAT, etc. These constants do not have the correct alignment constraints set because in the past we ran into issues where alignment would not be enforced correctly in all cases, especially for heap segments.

We now have a comprehensive solution to deal with alignment checks in heap segments (as per JDK-8278151) so we are now in a position to add back alignment constraints to value layout constants.