[MVT] coalesce.cpp:298 attempted to spill a non-spillable item

compiler/valhalla/valuetypes/TestMethodHandles.java
compiler/valhalla/valuetypes/TestMinimalValueTypes.java

Example 1:

XX:CompileCommand=inline,java.lang.__Value::hashCode -XX:-OmitStackTraceInFastThrow compiler.valhalla.valuetypes.TestMethodHandles run ]
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/coalesce.cpp:298
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (.../workspace/open/src/hotspot/share/opto/coalesce.cpp:298), pid=14441, tid=14465
# assert(false) failed: attempted to spill a non-spillable item: 1550: testN_mem_reg0, ireg = 13, spill_type: PhiInputSpillCopy

Example 2:

XX:CompileCommand=inline,java.lang.__Value::hashCode -XX:-OmitStackTraceInFastThrow compiler.valhalla.valuetypes.TestMinimalValueTypes run ]
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/coalesce.cpp:298
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (.../workspace/open/src/hotspot/share/opto/coalesce.cpp:298), pid=74542, tid=29699
# assert(false) failed: attempted to spill a non-spillable item: 5666: testN_mem_reg0, ireg = 13, spill_type: PhiInputSpillCopy