XORPS—Bitwise Logical XOR of Packed Single Precision Floating-Point Values

Opcode/Instruction Op /En 64/32 bit Mode Support CPUID Feature Flag Description
NP 0F 57 /r XORPS xmm1, xmm2/m128 A V/V SSE Return the bitwise logical XOR of packed single-precision floating-point values in xmm1 and xmm2/mem.
VEX.128.0F.WIG 57 /r VXORPS xmm1,xmm2, xmm3/m128 B V/V AVX Return the bitwise logical XOR of packed single-precision floating-point values in xmm2 and xmm3/mem.
VEX.256.0F.WIG 57 /r VXORPS ymm1, ymm2, ymm3/m256 B V/V AVX Return the bitwise logical XOR of packed single-precision floating-point values in ymm2 and ymm3/mem.
EVEX.128.0F.W0 57 /r VXORPS xmm1 {k1}{z}, xmm2, xmm3/m128/m32bcst C V/V AVX512VL AVX512DQ Return the bitwise logical XOR of packed single-precision floating-point values in xmm2 and xmm3/m128/m32bcst subject to writemask k1.
EVEX.256.0F.W0 57 /r VXORPS ymm1 {k1}{z}, ymm2, ymm3/m256/m32bcst C V/V AVX512VL AVX512DQ Return the bitwise logical XOR of packed single-precision floating-point values in ymm2 and ymm3/m256/m32bcst subject to writemask k1.
EVEX.512.0F.W0 57 /r VXORPS zmm1 {k1}{z}, zmm2, zmm3/m512/m32bcst C V/V AVX512DQ Return the bitwise logical XOR of packed single-precision floating-point values in zmm2 and zmm3/m512/m32bcst subject to writemask k1.

Instruction Operand Encoding

Op/En Tuple Type Operand 1 Operand 2 Operand 3 Operand 4
A NA ModRM:reg (r, w) ModRM:r/m (r) NA NA
B NA ModRM:reg (w) VEX.vvvv (r) ModRM:r/m (r) NA
C Full ModRM:reg (w) EVEX.vvvv (r) ModRM:r/m (r) NA

Description

Performs a bitwise logical XOR 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.512 encoded version: The first source operand is a ZMM register. The second source operand can be a ZMM register or a vector memory location. The destination operand is a ZMM register conditionally updated with writemask k1.

VEX.256 and EVEX.256 encoded versions: 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 (conditionally updated with writemask k1 in case of EVEX). The upper bits (MAXVL-1:256) of the corresponding ZMM register destination are zeroed.

VEX.128 and EVEX.128 encoded versions: 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 (conditionally updated with writemask k1 in case of EVEX). 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 desti-nation is not distinct from the first source XMM register and the upper bits (MAXVL-1:128) of the corresponding register destination are unmodified.

Operation

VXORPS (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* THEN

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

THEN DEST[i+31:i] := SRC1[i+31:i] BITWISE XOR SRC2[31:0];

ELSE DEST[i+31:i] := SRC1[i+31:i] BITWISE XOR SRC2[i+31:i];

FI;

ELSE

IF *merging-masking*

; merging-masking

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

ELSE *zeroing-masking*

; zeroing-masking

DEST[i+31:i] = 0

FI

FI;

ENDFOR

DEST[MAXVL-1:VL] := 0

VXORPS (VEX.256 encoded version)

DEST[31:0] := SRC1[31:0] BITWISE XOR SRC2[31:0]

DEST[63:32] := SRC1[63:32] BITWISE XOR SRC2[63:32]

DEST[95:64] := SRC1[95:64] BITWISE XOR SRC2[95:64]

DEST[127:96] := SRC1[127:96] BITWISE XOR SRC2[127:96]

DEST[159:128] := SRC1[159:128] BITWISE XOR SRC2[159:128]

DEST[191:160] := SRC1[191:160] BITWISE XOR SRC2[191:160]

DEST[223:192] := SRC1[223:192] BITWISE XOR SRC2[223:192]

DEST[255:224] := SRC1[255:224] BITWISE XOR SRC2[255:224].

DEST[MAXVL-1:256] := 0

VXORPS (VEX.128 encoded version)

DEST[31:0] := SRC1[31:0] BITWISE XOR SRC2[31:0]

DEST[63:32] := SRC1[63:32] BITWISE XOR SRC2[63:32]

DEST[95:64] := SRC1[95:64] BITWISE XOR SRC2[95:64]

DEST[127:96] := SRC1[127:96] BITWISE XOR SRC2[127:96]

DEST[MAXVL-1:128] := 0

XORPS (128-bit Legacy SSE version)

DEST[31:0] := SRC1[31:0] BITWISE XOR SRC2[31:0]

DEST[63:32] := SRC1[63:32] BITWISE XOR SRC2[63:32]

DEST[95:64] := SRC1[95:64] BITWISE XOR SRC2[95:64]

DEST[127:96] := SRC1[127:96] BITWISE XOR SRC2[127:96]

DEST[MAXVL-1:128] (Unmodified)

Intel C/C++ Compiler Intrinsic Equivalent

VXORPS __m512 _mm512_xor_ps (__m512 a, __m512 b);

VXORPS __m512 _mm512_mask_xor_ps (__m512 a, __mmask16 m, __m512 b);

VXORPS __m512 _mm512_maskz_xor_ps (__mmask16 m, __m512 a);

VXORPS __m256 _mm256_xor_ps (__m256 a, __m256 b);

VXORPS __m256 _mm256_mask_xor_ps (__m256 a, __mmask8 m, __m256 b);

VXORPS __m256 _mm256_maskz_xor_ps (__mmask8 m, __m256 a);

XORPS __m128 _mm_xor_ps (__m128 a, __m128 b);

VXORPS __m128 _mm_mask_xor_ps (__m128 a, __mmask8 m, __m128 b);

VXORPS __m128 _mm_maskz_xor_ps (__mmask8 m, __m128 a);

SIMD Floating-Point Exceptions

None

Other Exceptions

Non-EVEX-encoded instructions, see Table 2-21, “Type 4 Class Exception Conditions”.

EVEX-encoded instructions, see Table 2-49, “Type E4 Class Exception Conditions”.