When building on Linux ppc64le with the clang toolchain, the new JVM fails already in the build process with this error :

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGILL (0x4) at pc=0x000079198fae03ac, pid=2922849, tid=2923410
#
# JRE version: (24.0.0.1) (build )
# Java VM: OpenJDK 64-Bit Server VM (24.0.0.1-internal-adhoc.d040975.jdk, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-ppc64le)
# Problematic frame:
# v ~BufferBlob::detect_cpu_features 0x000079198fae03ac
#

Host: POWER9 (architected), altivec supported, 64 cores, 127G, Ubuntu 22.04.4 LTS
Time: Tue Aug 13 08:01:50 2024 UTC elapsed time: 0.023703 seconds (0d 0h 0m 0s)
 
--------------- T H R E A D ---------------
 
Current thread (0x000079199802c800): JavaThread "Unknown thread" [_thread_in_vm, id=2923410, stack(0x000079199c990000,0x000079199cb90000) (2048K)]
 
Stack: [0x000079199c990000,0x000079199cb90000], sp=0x000079199cb8b7c0, free space=2029k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
v ~BufferBlob::detect_cpu_features 0x000079198fae03ac
V [libjvm.so+0x1206cb8] (vm_version_ppc.cpp:60)
V [libjvm.so+0x1206a98] (vm_version.cpp:32)
V [libjvm.so+0xa6e234] (init.cpp:128)
V [libjvm.so+0x11600a0] (threads.cpp:550)
V [libjvm.so+0xbaa0ac] JNI_CreateJavaVM+0xac (jni.cpp:3581)
C [libjli.so+0x185bc] (java.c:1592)
C [libjli.so+0x1c158] (java_md.c:653)
C [libc.so.6+0xb5804]
 
siginfo: si_signo: 4 (SIGILL), si_code: 1 (ILL_ILLOPC), si_addr: 0x000079198fae03ac