RFR: assert failure with traversal gc in macroAssembler_x86.cpp

[Roman Kennke]

Am 18.06.2018 um 15:50 schrieb Roland Westrelin:
> 
> http://cr.openjdk.java.net/~roland/shenandoah/masm-enqueue-regs/webrev.00/
> 
> When called from c1, dst can sometimes be c_rarg1.
> 
> Roland.
> 

Hi Roland,

thanks. this seems fine. Not sure if it can ever happen, maybe surround
it with if (dst != c_rarg1) ? Or does __ mov already check that and be a
no-op?

Roman