8034839: jvm hangs with gc/gctests/LoadUnloadGC test Summary: Provide fast lookup of checked dependencies via hashmap Reviewed-by: kvn, roland

8034188: OSR methods may not be recompiled at proper compilation level Summary: remove_osr_nmethod doesn't check that it is the correct method Reviewed-by: kvn, iveresov

8010500: [parfait] Possible null pointer dereference at hotspot/src/share/vm/opto/loopnode.hpp Summary: Added NULL check for loopnode() in get_pre_loop_end() Reviewed-by: kvn, roland

8032642: [TESTBUG] Fix testbugs in compiler/startup/.* Summary: Fixed issues with these tests Reviewed-by: kvn, twisti

Merge

8031752: Failed speculative optimizations should be reattempted when root of compilation is different Summary: support for speculative traps that keep track of the root of the compilation in which a trap occurs. Reviewed-by: kvn, twisti

8033260: assert(lrg._area >= 0.0) failed: negative spill area Summary: Change type from float to double on block frequency, and add check for +Inf - +Inf operation Reviewed-by: kvn, roland

8032656: Tag the MachSpillCopies with purpose information Summary: Subclassed the MachSpillCopyNode with different subnodes for different spill purposes to enhance debugging / visualization Reviewed-by: kvn, roland

8034775: Failing to initialize VM when running with negative value for -XX:CICompilerCount Summary: Ensure appropriate min. number of compiler threads (1 for non-tiered, and 2 for tiered) Reviewed-by: kvn

8032894: Remove dead code in Pressure::lower Summary: Remove dead code in Pressure::lower Reviewed-by: kvn, roland