RFR(S): 8026949: -Xint flag prints wrong warning: Initialization of C1 thread failed (no space to run compilers)

[Albert Noll]

Hi,

could I have reviews for this small patch?

bug: https://bugs.openjdk.java.net/browse/JDK-8026949
webrev: http://cr.openjdk.java.net/~anoll/8026949/webrev.00/ 
<http://cr.openjdk.java.net/%7Eanoll/8026949/webrev.00/>

Problem: 8023014 introduced a wrong warning: Initialization of C1 thread 
failed (no space to run compilers) when the VM is started
                with -Xint

Solution: Do not start compiler threads if VM is started with -Xint

Testing: -Xint flag does not print out the false warning. Tested flag 
combinations:
       -XX:+TieredCompilation -Xint (-server / -client)
       -XX:-TieredCompilation -Xint   (-server / -client)


Many thanks in advance,
Albert

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