KNOTW_KNOTB_KNOTQ_KNOTD

KNOTW / KNOTB / KNOTQ / KNOTD — NOT Mask Register

Opcode/ Instruction	Op/En	64/32 bit Mode Support	CPUID Feature Flag	Description
VEX.L0.0F.W0 44 /r KNOTW k1, k2	RR	V/V	AVX512F	Bitwise NOT of 16 bits mask k2.
VEX.L0.66.0F.W0 44 /r KNOTB k1, k2	RR	V/V	AVX512DQ	Bitwise NOT of 8 bits mask k2.
VEX.L0.0F.W1 44 /r KNOTQ k1, k2	RR	V/V	AVX512BW	Bitwise NOT of 64 bits mask k2.
VEX.L0.66.0F.W1 44 /r KNOTD k1, k2	RR	V/V	AVX512BW	Bitwise NOT of 32 bits mask k2.

Instruction Operand Encoding

Op/En	Operand 1	Operand 2
RR	ModRM:reg (w)	ModRM:r/m (r, ModRM:[7:6] must be 11b)

Description

Performs a bitwise NOT of vector mask k2 and writes the result into vector mask k1.

Operation

KNOTW

DEST[15:0] ← BITWISE NOT SRC[15:0]
DEST[MAX_KL-1:16] ← 0

KNOTB

DEST[7:0] ← BITWISE NOT SRC[7:0]
DEST[MAX_KL-1:8] ← 0

KNOTQ

DEST[63:0] ← BITWISE NOT SRC[63:0]
DEST[MAX_KL-1:64] ← 0

KNOTD

DEST[31:0] ← BITWISE NOT SRC[31:0]
DEST[MAX_KL-1:32] ← 0

Intel C/C++ Compiler Intrinsic Equivalent

KNOTW __mmask16 _mm512_knot(__mmask16 a);

Flags Affected

None

SIMD Floating-Point Exceptions

None

Other Exceptions

See Exceptions Type K20.

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Source: Intel® Architecture Software Developer's Manual (May 2018)
Generated: 5-6-2018