[8u-dev]: RFA: 8208480: Test failure: assert(is_bound() || is_unused()) after JDK-8206075 in C1

[Hohensee, Paul]

Please approve the backport to jdk8u of this patch for the backport of

8206075: On x86, assert on unbound assembler Labels used as branch targets

requested in a previous email.

JBS: https://bugs.openjdk.java.net/browse/JDK-8208480
Webrev: http://cr.openjdk.java.net/~phh/8208480/webrev.8u.00/
Review thread: http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2018-August/029627.html

The patch applies cleanly net of line number changes and file locations.

Webrev combined with 8206075: http://cr.openjdk.java.net/~phh/8208480/webrev.8u.8206075.combined/

Thanks,

Paul