8141137: C2 fails rematerializing nodes using flag registers.
Summary: Don't rem. if input stretches several live ranges. If rem., don't add SpillCopy on RegFlags edge.
Reviewed-by: kvn, vlivanov
twisti [Tue, 17 Nov 2015 11:29:23 -1000] rev 34192
8142511: [JVMCI] must eagerly initialize classes with static fields accessed by JVMCI native code
Reviewed-by: twisti
Contributed-by: Doug Simon <doug.simon@oracle.com>