gtpin::IGtVreg Class Reference

Virtual register. More...

#include <igt_vreg.h>

Public Member Functions
virtual bool	IsValid () const =0
	Return true for a valid virtual register.
virtual GtVregNum	Num () const =0
	Return unique register number, assigned by IGtVregFactory.
virtual uint32_t	Size () const =0
	Return size of the register in bytes.
virtual GtVregType	Type () const =0
	Return type of the register.
virtual uint32_t	Flags () const =0
	Return combination of boolean flags associated with the register.
virtual GtSubRegNum	RequiredSubregNum () const =0
	Return required subregister number, or GtSubRegNum::Invalid() < if this vreg accepts any subregister assignment.
virtual	operator GtReg () const =0
std::string	ToString () const
	Return string representation of this virtual register.

---

Detailed Description

Virtual register.

Note:

For now, we assume that virtual register can only be mapped to a GRF (sub)register. ARF registers and non-scalar GRF regions can't be virtualized.

Availability:

• IGtTool::OnKernelBuild

---

Member Function Documentation

virtual gtpin::IGtVreg::operator GtReg

(

)

const [pure virtual]

Convert this virtual register into an exemplar physical register. Usually, this conversion is used to generate operand that represents virtual register in GEN instruction (IGtIns).

Note:

For now, we assume that all virtual registers are of GRF type