Overview

Vector data-types pack multiple scalar data elements into a wider vector. There are vector data-types with standard sized elements (4-bit, 8-bit, 16-bit, 32-bit).

The general naming convention for these data-types is shown below.

    v{NumLanes}[cu]int{SizeofElement}
    v{NumLanes}bfloat16

Disambiguation :

'int' denotes integer fixed-point registers.
'bfloat16' denotes brain-float (1b sign, 7b exponent, 8b mantissa).
'accfloat' denotes single precision floating point values (1b sign, 8b exponent, 23b exponent). (Note : bfloat16 operations use the accfloat format as accumulator registers)
'u' denotes unsigned
'c' denotes complex

For example, v32uint4, v16int8, v8int16, v128int4, v32bfloat16

The total data-width of the vector data-types can be 8-bits, 16-bits, 32-bits, 64-bits, 128-bits, 256-bits, 512-bits, or 1024-bits.

Note: Vector data-types are stored in different sets of registers within the processor core. Large vectors (>256-bits) occupy more than one physical register. Register spills will reduce performance when more than one large register is 'live'.

Supported vector types and sizes
Scalar type	Supported vector lanes
int4/uint4	32/64/128/256
int8/uint8	16/32/64/128
int16/uint16	8/16/32/64
int32/uint32	4/8/16/32
cint16	2/4/8/16/32
cint32	2/4/8/16
bfloat16	8/16/32/64
float	4/8/16/32
cfloat	2/4/8/16

Modules
	Complex Vector Types

	Compressed Complex Vector Types

	Compressed Floating-Point Vector Types

	Compressed Integer Vector Types

	Compressed Sparse Vector Types

	Floating-Point Vector Types

	Integer Vector Types

	Sparse Vector Types

Overview

Modules