Pack/Unpack

Pack

Represents PACK instruction.

Intrinsics Prototype and Arguments

bfloat128 v_bf16_pack_b(bfloat128 a, int switches, bfloat128 income, bool predicate=1, bool polarity=0)

bfloat128 v_bf16_pack_vb(bfloat128 a, int switches, bfloat128 income, bool128 predicate, bool polarity=0)

short128 v_i16_pack_b(short128 a, int switches, short128 income, bool predicate=1, bool polarity=0)

short128 v_i16_pack_vb(short128 a, int switches, short128 income, bool128 predicate, bool polarity=0)

ushort128 v_u16_pack_b(ushort128 a, int switches, ushort128 income, bool predicate=1, bool polarity=0)

ushort128 v_u16_pack_vb(ushort128 a, int switches, ushort128 income, bool128 predicate, bool polarity=0)

char256 v_i8_pack_b(char256 a, int switches, char256 income, bool predicate=1, bool polarity=0)

char256 v_i8_pack_vb(char256 a, int switches, char256 income, bool256 predicate, bool polarity=0)

uchar256 v_u8_pack_b(uchar256 a, int switches, uchar256 income, bool predicate=1, bool polarity=0)

uchar256 v_u8_pack_vb(uchar256 a, int switches, uchar256 income, bool256 predicate, bool polarity=0)

a

Value in which population is counted (SRC1).

switches

Switches of the instructions.

income

This value is returned if the predicate is false.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Allowed switches are:

  • [GROUP_SOURCE] - Indicates which of the groups in the dual group is to be used as a source.

    • SW_GROUP_0

    • SW_GROUP_1

  • [ELEMENT_STRIDE]

    • SW_STRIDE_2 - Every second element is valid.

    • SW_STRIDE_4 - Every forth element is valid.

Packed value.

Unpack

Represents UNPACK instruction.

Intrinsics Prototype and Arguments

bfloat128 v_bf16_unpack_b(bfloat128 a, int switches, bfloat128 income, bool predicate=1, bool polarity=0)

bfloat128 v_bf16_unpack_vb(bfloat128 a, int switches, bfloat128 income, bool128 predicate, bool polarity=0)

short128 v_i16_unpack_b(short128 a, int switches, short128 income, bool predicate=1, bool polarity=0)

short128 v_i16_unpack_vb(short128 a, int switches, short128 income, bool128 predicate, bool polarity=0)

ushort128 v_u16_unpack_b(ushort128 a, int switches, ushort128 income, bool predicate=1, bool polarity=0)

ushort128 v_u16_unpack_vb(ushort128 a, int switches, ushort128 income, bool128 predicate, bool polarity=0)

char256 v_i8_unpack_b(char256 a, int switches, char256 income, bool predicate=1, bool polarity=0)

char256 v_i8_unpack_vb(char256 a, int switches, char256 income, bool256 predicate, bool polarity=0)

uchar256 v_u8_unpack_b(uchar256 a, int switches, uchar256 income, bool predicate=1, bool polarity=0)

uchar256 v_u8_unpack_vb(uchar256 a, int switches, uchar256 income, bool256 predicate, bool polarity=0)

a

Value to be transformed (SRC1).

switches

Switches of the instruction.

income

This value is returned if the predicate is false.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Allowed switches are:

  • [GROUP_SOURCE]

    • SW_GROUP_0

    • SW_GROUP_1

  • [ELEMENT_STRIDE]

    • SW_STRIDE_2 - Every second element is valid.

    • SW_STRIDE_4 - Every forth element is valid.

  • [GROUP_HALF]

    • SW_GROUP_HALF_0 - The lower half of the input group is taken.

    • SW_GROUP_HALF_1 - The upper half of the input group is taken.

Unpacked value.