RFR(XS) : 8023318 : compiler/whitebox tests timeout with enabled TieredCompilation

[Igor Ignatyev]

Hi all,

Please review patch:

Problem:
OSR test cases in 'compiler/whitebox/*' takes too much time w/ enabled 
TieredCompilation.

Fix:
'BACKEDGE_THRESHOLD' was decreased to 150000 for TieredCompilation. This 
value is enough, because all tests run w/ 
'-XX:CompileCommand=compileonly,TestCase$Helper::*', so compilation 
queue is empty.

webrev: http://cr.openjdk.java.net/~iignatyev/8023318/webrev.00/
jbs: https://bugs.openjdk.java.net/browse/JDK-8023318
testing: compiler/whitebox w/ default flags and w/ the same flags as in 
nightly
-- 
Best regards,
Igor Ignatyev