-m32|-m64

Specifies the memory model for the compiled binary object. 

-xarch

Specify instruction set architecture.

-xcache

Defines the cache properties for use by the optimizer.

-xchip

Specifies the target processor for use by the optimizer.

-xregs

(SPARC) Specifies the usage of registers for the generated code.

-xtarget

Specifies the target system for instruction set and optimization.