gtpin::GtDstRegion Class Reference

Destination operand of the GEN instruction. More...

#include <gt_ins_fields.h>

Public Member Functions
	GtDstRegion ()
	Default constructor.
	GtDstRegion (const GtReg &reg, GtHorzStride hStride=1)
	Construct a destination register region with the direct addressing mode, specified origin and the horizontal stride.
	GtDstRegion (const GtReg &reg, GtHorzStride hStride, GtDataType dataType)
	Construct a destination register region with the direct addressing mode, specified origin, horizontal stride and element type.
	GtDstRegion (const GtReg &reg, GtHorzStride hStride, GtDataType dataType, GtAddrMode addrMode, int32_t addrImm=0)
	Construct a destination region with the specified addressing mode, origin, horizontal stride and element type.
bool	IsValid () const
	Return true for a valid register region.
GtRegFileType	Type () const
	Return type of the register region.
const GtReg &	Reg () const
	Return origin of the destination region.
GtHorzStride	HorzStride () const
	Return horizontal stride of the destination region.
GtDataType	DataType () const
	Return type of the element in the destination region.
GtAddrMode	AddrMode () const
	Return addressing mode of the register region.
int32_t	AddrImm () const
	Return address immediate offset.

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Detailed Description

Destination operand of the GEN instruction.

The destination operand is only allowed to have a one-dimensional region (vector or scalar). The width of the vector equals the execution size of the instruction. Only horizontal stride is required in the GtStride specification.

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Constructor & Destructor Documentation

gtpin::GtDstRegion::GtDstRegion	(	const GtReg &	reg,
		GtHorzStride	hStride = 1
	)		[inline]

Construct a destination register region with the direct addressing mode, specified origin and the horizontal stride.

The region gets unsigned integer type whose size is reg.ElementSize().

Parameters:

[in]	reg	The origin element of the destination region
[in]	hStride	The horizontal stride of the destination region

gtpin::GtDstRegion::GtDstRegion	(	const GtReg &	reg,
		GtHorzStride	hStride,
		GtDataType	dataType
	)		[inline]

Construct a destination register region with the direct addressing mode, specified origin, horizontal stride and element type.

Parameters:

[in]	reg	The origin element of the destination region
[in]	hStride	The horizontal stride of the destination region
[in]	dataType	The type of the element in the destination region

Postcondition:

Reg().ElementSize() == dataType.Size().

gtpin::GtDstRegion::GtDstRegion	(	const GtReg &	reg,
		GtHorzStride	hStride,
		GtDataType	dataType,
		GtAddrMode	addrMode,
		int32_t	addrImm = 0
	)		[inline]

Construct a destination region with the specified addressing mode, origin, horizontal stride and element type.

Parameters:

[in]	reg	In the direct addressing mode, the origin element of the destination region. In the indirect addressing mode, an ARF register that addresses the origin of the destination region in GRF.
[in]	hStride	The horizontal stride of the destination region
[in]	dataType	The type of the region's data element
[in]	addrMode	The addresing mode of the register region, either direct or indirect
[in]	addrImm	Address immediate offset - a signed integer, added to subregister of the indirectly addressed GRF register. Ignored in the direct addressing mode.

Precondition:

!addrMode.IsIndirect() || reg.IsAddrReg()

Postcondition:

addrMode.IsIndirect() || (Reg().ElementSize() == dataType.Size())