This version of ShortLoopOptimizer can handle only up to T_ARRAY (13), but in Valhalla we have added T_VALUETYPE (14)

http://hg.openjdk.java.net/valhalla/valhalla/file/cf9a8e7a0094/src/hotspot/share/c1/c1_ValueMap.cpp#l279

This cause the following test to assert when running with -XX:+EnableValhallaC1

http://hg.openjdk.java.net/valhalla/valhalla/file/cf9a8e7a0094/test/hotspot/jtreg/runtime/valhalla/valuetypes/ValueTypesTest.java

# Internal Error (/home/iklam/jdk/valhalla/open/src/hotspot/share/c1/c1_ValueMap.cpp:279), pid=8577, tid=8591
# assert(field->type()->basic_type() >= 0 && field->type()->basic_type() <= T_ARRAY) failed: Invalid type

The fix is to replace all use of T_ARRAY in this class to T_VALUETYPE.