RFR(XS) 8059621: JVM crashes with "unexpected index type" assert in LIRGenerator::do_UnsafeGetRaw

[Igor Veresov]

I incorrectly assumed that LIRItem.load_noconstant() always leaves constants alone. On SPARC that is not the case. So it’s incorrect to assume that if a value was a constant in HIR it will stay a constant in LIR. The fix is to ask LIR for types and constness.

JBS: https://bugs.openjdk.java.net/browse/JDK-8059621
Webrev: http://cr.openjdk.java.net/~iveresov/8059621/webrev.00

Thanks,
igor
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