Roberto Castaneda Lozano f3ea0d362f 8252583: Clean up unused phi-to-copy degradation mechanism
Remove unused notion of 'PhiNode-to-copy degradation', where PhiNodes can be
degraded to copies by setting their RegionNode to NULL. Remove corresponding
PhiNode::is_copy() test, which always returned NULL (false). Assert that
PhiNodes have an associated RegionNode in PhiNode::Ideal().

Reviewed-by: thartmann, kvn
2020-09-24 08:10:56 +00:00
2016-05-30 16:17:11 +02:00

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