8027445: SIGSEGV at TestFloatingDecimal.testAppendToDouble()I

[Roland Westrelin]

> And it can happen in 32 bit mode since SPARC's registers are 64-bit, so don't put it under #ifdef LP64.

In 32bit mode, it can happen that the upper half of a register is non null but that won’t affect the following load because the upper half is ignored on the memory access anyway. So this is really 64 bit only.

Roland.