compiler/arraycopy/TestInstanceCloneAsLoadsStores.java triggers the following assert when executed with -XX:-ReduceInitialCardMarks -XX:-ReduceBulkZeroing -XX:-ReduceFieldZeroing:

CompileCommand: dontinline compiler/arraycopy/TestInstanceCloneAsLoadsStores.m* bool dontinline = true
 164 MergeMem === _ 1 49 96 96 1 96 169 174 179 184 189 [[]] { N96:rawptr:BotPTR N96:java/lang/Object+8 * [narrowklass] - N96:java/lang/Object * N169:compiler/arraycopy/TestInstanceCloneUtils$D:exact+12 * N174:compiler/arraycopy/TestInstanceCloneUtils$D:exact+16 * N179:compiler/arraycopy/TestInstanceCloneUtils$D:exact+24 * N184:compiler/arraycopy/TestInstanceCloneUtils$D:exact+28 * N189:compiler/arraycopy/TestInstanceCloneUtils$D:exact+30 * } Memory: @BotPTR *+bot, idx=Bot;
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/phaseX.cpp:1103
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/opt/mach5/mesos/work_dir/slaves/983c483a-6907-44e0-ad29-98c7183575e2-S14904/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/768c53e6-1238-4a69-aabb-67088d091392/runs/92dc5626-aaeb-42f5-bba5-36b6e98bdb2b/workspace/open/src/hotspot/share/opto/phaseX.cpp:1103), pid=2608, tid=2623
# fatal error: modified node was not processed by IGVN.transform_old()

Current CompileTask:
C2: 1078 168 b compiler.arraycopy.TestInstanceCloneAsLoadsStores::m1 (5 bytes)

Stack: [0x00007f9d40efb000,0x00007f9d40ffc000], sp=0x00007f9d40ff74f0, free space=1009k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x15ac3ee] PhaseIterGVN::verify_PhaseIterGVN()+0xde
V [libjvm.so+0xa0adc6] Compile::Optimize()+0x216
V [libjvm.so+0xa0deb5] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, DirectiveSet*)+0x1905
V [libjvm.so+0x83a09a] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x1ea
V [libjvm.so+0xa1dd81] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xea1
V [libjvm.so+0xa1ea08] CompileBroker::compiler_thread_loop()+0x5a8
V [libjvm.so+0x1840986] JavaThread::thread_main_inner()+0x256
V [libjvm.so+0x1846e00] Thread::call_run()+0x100
V [libjvm.so+0x1532fb6] thread_native_entry(Thread*)+0x116