In the aarch64-port of jdk8u, I sometimes trip an assert because a MacroAssembler::mov() is emitted with an address 0xDEADDEAD, which sometimes can be in-heap, while the assert checks that it is not in-heap. This only affects the jdk8u-branch in aarch64-port/jdk8u. It does not affect jdk9 and jdk9: the assert is not present there.