[12] RFR(S): 8209511: C2 asserts with UseSSE < 4 and AVX enabled: "Label was never bound to a location, but it was used as a jmp target'

[Tobias Hartmann]

Hi,

please review the following patch:
https://bugs.openjdk.java.net/browse/JDK-8209511
http://cr.openjdk.java.net/~thartmann/8209511/webrev.00/

The problem is that the 'below_threshold' label is used by the UseAVX > 2 code but only bound if
UseSSE > 3. This didn't break before the verification code (JDK-8206075) was added because we would
just jump to the next instruction. I've also fixed some spelling in the comments.

Tested manually on AVX512 machine with -XX:UseSSE=3.

Thanks,
Tobias