User guide

3-35
Compiling and Elaborating Your Design
Compiling With Radiant Technology
You specify Radiant Technology optimizations at compile time.
Radiant Technology has the following compile-time options:
+rad
Specifies using Radiant Technology
+optconfigfile
Specifies applying Radiant Technology optimizations to part of the
design using a configuration file. See “Applying Radiant
Technology to Parts of the Design” on page 3-36.
Known Limitations
Radiant Technology is not applicable to all simulation situations.
Some features of VCS are not available when you use Radiant
Technology.
These limitations are:
• Backannotating SDF Files
You cannot use Radiant Technology if your design backannotates
delay values from either a compiled or an ASCII SDF file at
runtime.
• SystemVerilog
Radiant Technology does not work with SystemVerilog design
construct code, for example, structures and unions, new types of
always blocks, interfaces, or things defined in $root.