8166002: Emulate client build on platforms with reduced virtual address space
Summary: The default VM ergonomics on Windows/x86 (32-bit) are changed to client like.
Reviewed-by: kvn, iveresov

8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8162881: Effect of -XX:CICompilerCount depends on ordering of other flags
Summary: Value of CICompilerCount should be range checked after ergo. Don't create C2 compiler threads with TieredStopAtLevel=1.
Reviewed-by: kvn

8151280: update hotspot tests to use vm.compMode instead of their own logic
Summary: Update hs compiler tests to use vm.compMode instead of their own logic and to get VM mode using j.t.l.Platform
Reviewed-by: kvn, dpochepk
Contributed-by: igor.ignatyev@oracle.com

8132919: Put compiler tests in packages
Reviewed-by: vlivanov, dpochepk
Contributed-by: igor.ignatyev@oracle.com

8132920: use package in compiler testlibraries
Reviewed-by: kvn, psandoz

8154258: [TESTBUG] Various serviceability tests fail compilation
Summary: Replace sun.misc.Unsafe with jdk.internal.misc.Unsafe
Reviewed-by: chegar, kvn

8145331: SEGV in DirectivesStack::release(DirectiveSet*)
Summary: getDefaultDirective was not updated in 8144873
Reviewed-by: twisti, kvn

Merge

8138689: use package for /compiler/whitebox common classes
Summary: Moved CompilerWhiteBoxTest to package, updating tests accordingly
Reviewed-by: iignatyev

8140189: [TESTBUG] Get rid of "@library /../../test/lib" in jtreg tests
Summary: Use new external.lib.roots property in TEST.ROOT so /../../test/lib is not needed.
Reviewed-by: mseledtsov, sla, iklam

8130832: Extend the WhiteBox API to provide information about the availability of compiler intrinsics
Summary: Add a new method, sun.hotspot.WhiteBox.isIntrinsicAvailable, that can be used to determine if an intrinsic is available.
Reviewed-by: kvn, jrose