Summary: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: sgehwolf, thartmann, andrew

Summary: Includes compile_id addition from JDK-8054492
Reviewed-by: andrew

8204966: [TESTBUG] hotspot/test/compiler/whitebox/IsMethodCompilableTest.java test fails with -XX:CompileThreshold=1
Summary: enforce lower bound on number of loop iterations used to trigger OSR
Reviewed-by: kvn, iignatyev

8056071: compiler/whitebox/IsMethodCompilableTest.java fails with 'method() is not compilable after 3 iterations'
Summary: Always use MDO if valid and always compile trivial methods with C1 if available.
Reviewed-by: kvn, iveresov

Summary: Fixed Whitebox.deoptimizeMethod() to deoptimize all OSR versions of the method.
Reviewed-by: kvn, iignatyev

8061983: [TESTBUG] compiler/whitebox/MakeMethodNotCompilableTest.java fails with "must not be in queue"
Summary: Added a method checkNotCompiled(boolean isOsr) to either check if the method is OSR compiled or to check if it is non-OSR compiled.
Reviewed-by: kvn

Summary: Call warmup code from OSR triggering method to make sure no non-OSR compilation is triggered in the loop.
Reviewed-by: kvn

Summary: Move the call to 'waitAndDeoptimize' from the warmup methods to the osr triggering methods to make sure that no non-osr compilation is in the queue after warmup.
Reviewed-by: kvn

Summary: Added code to 'warm up' the methods before triggering OSR compilation by executing them a limited number of times. Like this, the profile information marks the loop exit as taken and we don't add an uncommon trap.
Reviewed-by: kvn, dlong, iignatyev

Summary: Prevent from running with Xcomp
Reviewed-by: kvn, twisti

Reviewed-by: morris, kvn

8027124: [TESTBUG] NonTieredLevelsTest: java.lang.RuntimeException: private TestCase$Helper(java.lang.Object) must be osr_compiled
Reviewed-by: kvn, roland

Summary: Only c2 compiles counts toward cutoff
Reviewed-by: kvn, roland

Reviewed-by: twisti
Contributed-by: anton.ivanov@oracle.com

Reviewed-by: kvn, twisti

Reviewed-by: kvn

Summary: 'compileonly' directive has beens added to each 'compiler/whitebox' test
Reviewed-by: kvn

Reviewed-by: kvn

Reviewed-by: kvn, vlivanov

Reviewed-by: kvn, vlivanov

Reviewed-by: kvn, vlivanov

Reviewed-by: kvn, vlivanov

Summary: Modify WhiteBoxAPI to use interface classes from test/testlibrary instead, add ClassFileInstaller to resolve the boot class path issue
Reviewed-by: ctornqvi, dsamersoff, coleenp, kvn

Reviewed-by: kvn, vlivanov