Apparently no-one ever ran the tests with assertions on:

java.lang.AssertionError: minimum config for aarch64
at jdk.vm.ci.aarch64.AArch64.<init>(AArch64.java:182)
at jdk.vm.ci.hotspot.aarch64.AArch64HotSpotJVMCIBackendFactory.createTarget(AArch64HotSpotJVMCIBackendFactory.java:64)
at jdk.vm.ci.hotspot.aarch64.AArch64HotSpotJVMCIBackendFactory.createJVMCIBackend(AArch64HotSpotJVMCIBackendFactory.java:98)
at jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.<init>(HotSpotJVMCIRuntime.java:133)
at jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.<init>(HotSpotJVMCIRuntime.java:65)
at jdk.vm.ci.hotspot.HotSpotJVMCIRuntime$DelayedInit.<clinit>(HotSpotJVMCIRuntime.java:73)
at jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime(HotSpotJVMCIRuntime.java:83)
at jdk.vm.ci.runtime.JVMCI.initializeRuntime(Native Method)
at jdk.vm.ci.runtime.JVMCI.<clinit>(JVMCI.java:58)
...