| Opcode/Instruction | Op /En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
| 66 0F 57/r XORPD xmm1, xmm2/m128 | A | V/V | SSE2 | Return the bitwise logical XOR of packed double precision floating-point values in xmm1 and xmm2/mem. |
| VEX.128.66.0F.WIG 57 /r VXORPD xmm1,xmm2, xmm3/m128 | B | V/V | AVX | Return the bitwise logical XOR of packed double precision floating-point values in xmm2 and xmm3/mem. |
| VEX.256.66.0F.WIG 57 /r VXORPD ymm1, ymm2, ymm3/m256 | B | V/V | AVX | Return the bitwise logical XOR of packed double precision floating-point values in ymm2 and ymm3/mem. |
| EVEX.128.66.0F.W1 57 /r VXORPD xmm1 {k1}{z}, xmm2, xmm3/m128/m64bcst | C | V/V | AVX512VL AVX512DQ | Return the bitwise logical XOR of packed double precision floating-point values in xmm2 and xmm3/m128/m64bcst subject to writemask k1. |
| EVEX.256.66.0F.W1 57 /r VXORPD ymm1 {k1}{z}, ymm2, ymm3/m256/m64bcst | C | V/V | AVX512VL AVX512DQ | Return the bitwise logical XOR of packed double precision floating-point values in ymm2 and ymm3/m256/m64bcst subject to writemask k1. |
| EVEX.512.66.0F.W1 57 /r VXORPD zmm1 {k1}{z}, zmm2, zmm3/m512/m64bcst | C | V/V | AVX512DQ | Return the bitwise logical XOR of packed double precision floating-point values in zmm2 and zmm3/m512/m64bcst subject to writemask k1. |
| Op/En | Tuple Type | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
|---|---|---|---|---|---|
| A | N/A | ModRM:reg (r, w) | ModRM:r/m (r) | N/A | N/A |
| B | N/A | ModRM:reg (w) | VEX.vvvv (r) | ModRM:r/m (r) | N/A |
| C | Full | ModRM:reg (w) | EVEX.vvvv (r) | ModRM:r/m (r) | N/A |
Description
Performs a bitwise logical XOR of the two, four or eight packed double 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 write-mask 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
VXORPD (EVEX Encoded Versions)
(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
i := j * 64
IF k1[j] OR *no writemask* THEN
IF (EVEX.b == 1) AND (SRC2 *is memory*)
THEN DEST[i+63:i] := SRC1[i+63:i] BITWISE XOR SRC2[63:0];
ELSE DEST[i+63:i] := SRC1[i+63:i] BITWISE XOR SRC2[i+63:i];
FI;
ELSE
IF *merging-masking*
; merging-masking
THEN *DEST[i+63:i] remains unchanged*
ELSE *zeroing-masking*
; zeroing-masking
DEST[i+63:i] = 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0
VXORPD (VEX.256 Encoded Version)
DEST[63:0] := SRC1[63:0] BITWISE XOR SRC2[63:0]
DEST[127:64] := SRC1[127:64] BITWISE XOR SRC2[127:64]
DEST[191:128] := SRC1[191:128] BITWISE XOR SRC2[191:128]
DEST[255:192] := SRC1[255:192] BITWISE XOR SRC2[255:192]
DEST[MAXVL-1:256] := 0
VXORPD (VEX.128 Encoded Version)
DEST[63:0] := SRC1[63:0] BITWISE XOR SRC2[63:0]
DEST[127:64] := SRC1[127:64] BITWISE XOR SRC2[127:64]
DEST[MAXVL-1:128] := 0
XORPD (128-bit Legacy SSE Version)
DEST[63:0] := DEST[63:0] BITWISE XOR SRC[63:0]
DEST[127:64] := DEST[127:64] BITWISE XOR SRC[127:64]
DEST[MAXVL-1:128] (Unmodified)
Intel C/C++ Compiler Intrinsic Equivalent
VXORPD __m512d _mm512_xor_pd (__m512d a, __m512d b);
VXORPD __m512d _mm512_mask_xor_pd (__m512d a, __mmask8 m, __m512d b);
VXORPD __m512d _mm512_maskz_xor_pd (__mmask8 m, __m512d a);
VXORPD __m256d _mm256_xor_pd (__m256d a, __m256d b);
VXORPD __m256d _mm256_mask_xor_pd (__m256d a, __mmask8 m, __m256d b);
VXORPD __m256d _mm256_maskz_xor_pd (__mmask8 m, __m256d a);
XORPD __m128d _mm_xor_pd (__m128d a, __m128d b);
VXORPD __m128d _mm_mask_xor_pd (__m128d a, __mmask8 m, __m128d b);
VXORPD __m128d _mm_maskz_xor_pd (__mmask8 m, __m128d 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.”