Reviewed-by: coleenp, kvn

Summary: Switch UseRTMXendForLockBusy flag ON by default and change code to retry RTM locking on lock busy condition by default.
Reviewed-by: roland

Summary: Remove the misleading malloc macro and cleanup the code
Reviewed-by: dsamersoff, kvn
Contributed-by: goetz.lindenmaier@sap.com

Reviewed-by: jrose, twisti

Reviewed-by: kvn, twisti

8036667: "assert(adr->is_AddP() && adr->in(AddPNode::Offset)->is_Con()) failed: offset is a constant" with FoldStableValues on
Reviewed-by: kvn

Reviewed-by: morris, kvn

Reviewed-by: iveresov, kvn, iignatyev
Contributed-by: filipp.zhinkin@oracle.com

Reviewed-by: dholmes, sla

Reviewed-by: tschatzl, pliden

Summary: verify YMM registers after signal processing and set limit on vector's size.
Reviewed-by: iveresov, twisti

Reviewed-by: tschatzl, pliden

Summary: enable type speculation
Reviewed-by: kvn

Summary: check fr.sender_sp() in java thread instead of os::is_first_C_frame(&fr).
Reviewed-by: twisti, coleenp

8036092: [TESTBUG] compiler/uncommontrap/TestSpecTrapClassUnloading.java fails with: Unrecognized VM option 'UseTypeSpeculation'
Summary: Add -XX:+IgnoreUnrecognizedVMOptions to @main/othervm to make the test pass on Client VM
Reviewed-by: kvn, roland