A DESCRIPTION OF THE PROBLEM :
This configuration fails:

$ CONF=linux-x86_64-server-fastdebug make test TEST=compiler/c2/irTests/TestVectorizeTypeConversion.java TEST_VM_OPTS="-XX:+SuperWordRTDepCheck"

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/loopnode.cpp:5284
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/home/root/jdk_source/jdk/src/hotspot/share/opto/loopnode.cpp:5284), pid=33529, tid=33798
# assert(!is_visited) failed: visit only once
#
# JRE version: OpenJDK Runtime Environment (20.0) (fastdebug build 20-internal-adhoc.root.jdk)
# Java VM: OpenJDK 64-Bit Server VM (fastdebug 20-internal-adhoc.root.jdk, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x12b349c] PhaseIdealLoop::build_loop_early(VectorSet&, Node_List&, Node_Stack&)+0x5ac
#
# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport -p%p -s%s -c%c -d%d -P%P -u%u -g%g -- %E" (or dumping to /home/root/jdk_source/jdk/build/linux-x86_64-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_hotspot_compiler/scratch/31/core.33529)
#


FREQUENCY : always