Merge

7047961: JSR 292 MethodHandleWalk swap args doesn't handle T_LONG and T_DOUBLE properly Reviewed-by: kvn, jrose

7047491: C1: registers saved incorrectly when calling checkcast_arraycopy stub Summary: Save and restore the argument registers around the call to checkcast_arraycopy Reviewed-by: never, roland

7048332: Cadd_cmpLTMask doesn't handle 64-bit tmp register properly Summary: Use ins_encode %{ %} form to encode cadd_cmpLTMask() instruction and remove unused code. Reviewed-by: never

7046732: JSR 292 assert(result == cpce->f1()) failed: expected result for assembly code Reviewed-by: kvn, iveresov, jrose

7048030: is_scavengable changes causing compiler to embed more constants Summary: ciObject::can_be_constant() and should_be_constant() should use is_perm() instead of !is_scavengable() Reviewed-by: never, jrose

7046893: LP64 problem with double_quadword in c1_LIRAssembler_x86.cpp Summary: Fixed invalid casts in address computation Reviewed-by: kvn, never Contributed-by: thomas.salter@unisys.com

7047300: VM crashes with assert(_base == InstPtr) failed: Not an object pointer Summary: The code incorrectly used is_instptr() instead of is_oopptr() to get const_oop. Reviewed-by: never

7045506: assert(!can_reshape || !new_phi) failed: for igvn new phi should be hooked Summary: Replace the assert in PhiNode::Ideal with check to avoid transformation of new phi. Reviewed-by: never

7045693: java/util/EnumSet/EnumSetBash.java still failing intermittently Summary: New limit for unrolled loop should be set only for zero trip guard and loop iteration test. Reviewed-by: never