irun/ncsim/ncvlog SystemVerilog support options

Just use "-sv", the default is to parse according to the latest standard (2012).
Note that if your files are named *.sv, then you do not need the -sv switch, irun figures it out for itself.
Using -sv forces all Verilog files to be treated as SV, which may not be what you want.

Thanks for the reply. I have my files as .sv only. So I am not using any switches. But when I run irun(version irun: 14.20-s033) I always get a warning. So I thought cadence supports SV 2005 by default and we need to use -sem2009 to use SV 2009 which by the warning suggests that it would be default in future release. But there is no mention of SV 2012 in the warning which made me wrongly conclude that cadence is yet to support SV 2012.

ncsim: *W,WSEM2009: This SystemVerilog simulation was not run with the '-sem2009' option which provides 1800-2009 SystemVerilog simulation semantics. In future, '-sem2009' functionality will become the default for SystemVerilog environments. Until then, run your SystemVerilog simulations using the '-sem2009' option and report any functional or performance issues to Cadence. To disable this warning, use the '-nowarn WSEM2009' command-line option. There is no impact to non-SystemVerilog environments

-sem2009 is a temporary switch in 14.20 that enables the 2009-onwards scheduling semantics, it has nothing to do with the language parsing itself.
Without this switch the scheduling follows the 2005 semantics in Incisive 15.10 and older. This becomes the default from version 15.20.
For more information, open the documentation tool:
linux> cdnshelp -search "-sem2009"