I suspect this is from recent addition in https://github.com/openjdk/jdk/pull/24125/files

Ref. Adoptium AIX build https://ci.adoptium.net/job/build-scripts/job/jobs/job/jdk/job/jdk-aix-ppc64-temurin/383/console
22:38:41 .ibm-clang: error: invalid linker name in argument '-fuse-ld=lld'
22:38:41 gmake[3]: *** [gensrc/GensrcAdlc.gmk:75: /home/jenkins/workspace/build-scripts/jobs/jdk/jdk-aix-ppc64-temurin/workspace/build/src/build/aix-ppc64-server-release/hotspot/variant-server/tools/adlc/adlc] Error 1