8039425: Code cleanup: PhaseIterGVN::optimize() Summary: This code cleanup aims at improving code readability. Reviewed-by: kvn, roland

Merge

8029436: CICompilerCount is not updated when the number of compiler threads is adjusted to the number of CPUs Summary: CICompilerCount is updated in AdvancedThresholdPolicy::initialize, SimpleThresholdPolicy::initialize and NonTieredCompPolicy::initialize. A warning is printed if the usersets both, CICompilerCount and CICompilerCountPerCPU. Reviewed-by: kvn, twisti Contributed-by: Tobias Hartmann <tobias.hartmann@oracle.com>