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ANDNPS

Bitwise Logical AND NOT of Packed Single Precision Floating-Point Values

stableVMJITAOTinstruction

Encodings

OpcodeInstructionOp/En64-bitCompat/LegacyDescription
NP 0F 55 /rANDNPS xmm1, xmm2/m128AValidValidReturn the bitwise logical AND NOT of packed single precision floating-point values in xmm1 and xmm2/mem.
VEX.128.0F 55 /rVANDNPS xmm1, xmm2, xmm3/m128BValidValidReturn the bitwise logical AND NOT of packed single precision floating-point values in xmm2 and xmm3/mem.
VEX.256.0F 55 /rVANDNPS ymm1, ymm2, ymm3/m256BValidValidReturn the bitwise logical AND NOT of packed single precision floating-point values in ymm2 and ymm3/mem.
EVEX.128.0F.W0 55 /rVANDNPS xmm1 {k1}{z}, xmm2, xmm3/m128/m32bcstCValidValidReturn the bitwise logical AND of packed single precision AVX512DQ) OR floating-point values in xmm2 and xmm3/m128/m32bcst AVX10.1 subject to writemask k1.
EVEX.256.0F.W0 55 /rVANDNPS ymm1 {k1}{z}, ymm2, ymm3/m256/m32bcstCValidValidReturn the bitwise logical AND of packed single precision AVX512DQ) OR floating-point values in ymm2 and ymm3/m256/m32bcst AVX10.1 subject to writemask k1.
EVEX.512.0F.W0 55 /rVANDNPS zmm1 {k1}{z}, zmm2, zmm3/m512/m32bcstCValidValidReturn the bitwise logical AND of packed single precision OR AVX10.1 floating-point values in zmm2 and zmm3/m512/m32bcst subject to writemask k1.

Operand encoding

Each mode is a value of the Op/En column above. It says which field of the encoded instruction carries each operand, in the order they are written, and whether the instruction reads it, writes it or both.

A

  1. modrm.reg lectura y escrituraModRM byte, reg field (bits 5-3)
  2. modrm.rm lecturaModRM byte, r/m field (bits 2-0); with the SIB byte and the displacement when the mod field asks for them

B

  1. modrm.reg escrituraModRM byte, reg field (bits 5-3)
  2. vex.vvvv lecturaVEX prefix, vvvv field (inverted)
  3. modrm.rm lecturaModRM byte, r/m field (bits 2-0); with the SIB byte and the displacement when the mod field asks for them

C

  1. modrm.reg escrituraModRM byte, reg field (bits 5-3)
  2. evex.vvvv lecturaEVEX prefix, vvvv field (inverted)
  3. modrm.rm lecturaModRM byte, r/m field (bits 2-0); with the SIB byte and the displacement when the mod field asks for them

Tupla: Full

Measured cost

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Description

Performs a bitwise logical AND NOT of the four, eight or sixteen packed single precision floating-point values from the first source operand and the second source operand, and stores the result in the destination operand.

EVEX encoded versions: The first source operand is a ZMM/YMM/XMM register. The second source operand can be a ZMM/YMM/XMM register, a 512/256/128-bit memory location, or a 512/256/128-bit vector broadcasted from a 32-bit memory location. The destination operand is a ZMM/YMM/XMM register conditionally updated with writemask k1.

VEX.256 encoded version: The first source operand is a YMM register. The second source operand is a YMM register or a 256-bit memory location. The destination operand is a YMM register. The upper bits (MAXVL-1:256) of the corresponding ZMM register destination are zeroed.

VEX.128 encoded version: The first source operand is an XMM register. The second source operand is an XMM register or 128-bit memory location. The destination operand is an XMM register. The upper bits (MAXVL-1:128) of the corresponding ZMM register destination are zeroed.

128-bit Legacy SSE version: The second source can be an XMM register or an 128-bit memory location. The destination is not distinct from the first source XMM register and the upper bits (MAXVL-1:128) of the corresponding ZMM register destination are unmodified.

Operation

VANDNPS (EVEX Encoded Versions)

(KL, VL) = (4, 128), (8, 256), (16, 512)

FOR j := 0 TO KL-1

i := j * 32

IF k1[j] OR *no writemask*

             IF (EVEX.b == 1) AND (SRC2 *is memory*)

                  THEN

                    DEST[i+31:i] := (NOT(SRC1[i+31:i])) BITWISE AND SRC2[31:0]

                  ELSE

                    DEST[i+31:i] := (NOT(SRC1[i+31:i])) BITWISE AND SRC2[i+31:i]

             FI;

     ELSE

             IF *merging-masking*         ; merging-masking

                  THEN *DEST[i+31:i] remains unchanged*

                  ELSE                    ; zeroing-masking

                    DEST[i+31:i] = 0

             FI;

FI;

ENDFOR

DEST[MAXVL-1:VL] := 0

VANDNPS (VEX.256 Encoded Version)
DEST[31:0] := (NOT(SRC1[31:0])) BITWISE AND SRC2[31:0]
DEST[63:32] := (NOT(SRC1[63:32])) BITWISE AND SRC2[63:32]
DEST[95:64] := (NOT(SRC1[95:64])) BITWISE AND SRC2[95:64]
DEST[127:96] := (NOT(SRC1[127:96])) BITWISE AND SRC2[127:96]
DEST[159:128] := (NOT(SRC1[159:128])) BITWISE AND SRC2[159:128]
DEST[191:160] := (NOT(SRC1[191:160])) BITWISE AND SRC2[191:160]
DEST[223:192] := (NOT(SRC1[223:192])) BITWISE AND SRC2[223:192]
DEST[255:224] := (NOT(SRC1[255:224])) BITWISE AND SRC2[255:224].
DEST[MAXVL-1:256] := 0

VANDNPS (VEX.128 Encoded Version)
DEST[31:0] := (NOT(SRC1[31:0])) BITWISE AND SRC2[31:0]
DEST[63:32] := (NOT(SRC1[63:32])) BITWISE AND SRC2[63:32]
DEST[95:64] := (NOT(SRC1[95:64])) BITWISE AND SRC2[95:64]
DEST[127:96] := (NOT(SRC1[127:96])) BITWISE AND SRC2[127:96]
DEST[MAXVL-1:128] := 0

ANDNPS (128-bit Legacy SSE Version)
DEST[31:0] := (NOT(DEST[31:0])) BITWISE AND SRC[31:0]
DEST[63:32] := (NOT(DEST[63:32])) BITWISE AND SRC[63:32]
DEST[95:64] := (NOT(DEST[95:64])) BITWISE AND SRC[95:64]
DEST[127:96] := (NOT(DEST[127:96])) BITWISE AND SRC[127:96]
DEST[MAXVL-1:128] (Unmodified)

Intel C/C++ compiler intrinsics

VANDNPS __m512 _mm512_andnot_ps (__m512 a, __m512 b);
VANDNPS __m512 _mm512_mask_andnot_ps (__m512 s, __mmask16 k, __m512 a, __m512 b);
VANDNPS __m512 _mm512_maskz_andnot_ps (__mmask16 k, __m512 a, __m512 b);
VANDNPS __m256 _mm256_mask_andnot_ps (__m256 s, __mmask8 k, __m256 a, __m256 b);
VANDNPS __m256 _mm256_maskz_andnot_ps (__mmask8 k, __m256 a, __m256 b);
VANDNPS __m128 _mm_mask_andnot_ps (__m128 s, __mmask8 k, __m128 a, __m128 b);
VANDNPS __m128 _mm_maskz_andnot_ps (__mmask8 k, __m128 a, __m128 b);
VANDNPS __m256 _mm256_andnot_ps (__m256 a, __m256 b);
ANDNPS __m128 _mm_andnot_ps (__m128 a, __m128 b);

SIMD Floating-Point Exceptions

None.

Other Exceptions

VEX-encoded instruction, see Table 2-21, "Type 4 Class Exception Conditions."

EVEX-encoded instruction, see Table 2-51, "Type E4 Class Exception Conditions."

Sources