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This is a quick reference for Intel's Streaming SIMD Extensions. Feel free to make additions or corrections!

The vector types here are named with the same convention as in Factor's SIMD library. It should be obvious what they mean:

- char-16
- uchar-16
- short-8
- ushort-8
- int-4
- uint-4
- longlong-2
- ulonglong-2
- float-4
- double-2

The number next to each instruction is the SSE version:

char-16 | uchar-16 | short-8 | ushort-8 | int-4 | uint-4 | longlong-2 | ulonglong-2 | float-4 | double-2 | |

move^{*} | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOVDQ[AU] 2 | MOV[AU]PS 1 | MOV[AU]PD 2 |

add | PADDB 2 | PADDB 2 | PADDW 2 | PADDW 2 | PADDD 2 | PADDD 2 | PADDQ 2 | PADDQ 2 | ADDPS 1 | ADDPD 2 |

subtract | PSUBB 2 | PSUBB 2 | PSUBW 2 | PSUBW 2 | PSUBD 2 | PSUBD 2 | PSUBQ 2 | PSUBQ 2 | SUBPS 1 | SUBPD 2 |

saturated add | PADDSB 2 | PADDUSB 2 | PADDSW 2 | PADDUSW 2 | ||||||

saturated subtract | PSUBSB 2 | PSUBUSB 2 | PSUBSW 2 | PSUBUSW 2 | ||||||

add-subtract | ADDSUBPS 3 | ADDSUBPD 3 | ||||||||

horizontal add | PHADDW 3.3 | PHADDW 3.3 | PHADDD 3.3 | PHADDD 3.3 | HADDPS 3 | HADDPD 3 | ||||

multiply | PMULLW 2 | PMULLW 2 | PMULLD 4.1 | PMULLD 4.1 | MULPS 1 | MULPD 2 | ||||

divide | DIVPS 1 | DIVPD 2 | ||||||||

absolute value | PABSB 3.3 | PABSW 3.3 | PABSD 3.3 | |||||||

minimum | PMINSB 4.1 | PMINUB 2 | PMINSW 2 | PMINUW 4.1 | PMINSD 4.1 | PMINUD 4.1 | MINPS 1 | MINPD 2 | ||

maximum | PMAXSB 4.1 | PMAXUB 2 | PMAXSW 2 | PMAXUW 4.1 | PMAXSD 4.1 | PMAXUD 4.1 | MAXPS 1 | MAXPD 2 | ||

approx reciprocal | RCPPS 1 | |||||||||

square root | SQRTPS 1 | SQRTPD 2 | ||||||||

comparison | PCMPxxB^{†} 2 | PCMPxxB^{†} 2 | PCMPxxW^{†} 2 | PCMPxxW^{†} 2 | PCMPxxD^{†} 2 | PCMPxxD^{†} 2 | CMPxxxPS^{‡} 1 | CMPxxxPD^{‡} 2 | ||

bitwise and | PAND 2 | PAND 2 | PAND 2 | PAND 2 | PAND 2 | PAND 2 | PAND 2 | PAND 2 | ANDPS 1 | ANDPD 2 |

bitwise or | POR 2 | POR 2 | POR 2 | POR 2 | POR 2 | POR 2 | POR 2 | POR 2 | ORPS 1 | ORPD 2 |

bitwise xor | PXOR 2 | PXOR 2 | PXOR 2 | PXOR 2 | PXOR 2 | PXOR 2 | PXOR 2 | PXOR 2 | XORPS 1 | XORPD 2 |

load mask | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | PMOVMSKB 2 | MOVMSKPS 1 | MOVMSKPD 2 |

shift left | PSLLW 2 | PSLLW 2 | PSLLD 2 | PSLLD 2 | PSLLQ 2 | PSLLQ 2 | ||||

shift right | PSRAW 2 | PSRLW 2 | PSRAD 2 | PSRLD 2 | PSRLQ 2 | |||||

unpack low | PUNPCKLBW 2 | PUNPCKLBW 2 | PUNPCKLWD 2 | PUNPCKLWD 2 | PUNPCKLDQ 2 | PUNPCKLDQ 2 | PUNPCKLQDQ 2 | PUNPCKLQDQ 2 | UNPCKLPS 1 | UNPCKLPD 2 |

unpack high | PUNPCKHBW 2 | PUNPCKHBW 2 | PUNPCKHWD 2 | PUNPCKHWD 2 | PUNPCKHDQ 2 | PUNPCKHDQ 2 | PUNPCKHQDQ 2 | PUNPCKHQDQ 2 | UNPCKHPS 1 | UNPCKHPD 2 |

static shuffle | PSHUF[HL]W 2 | PSHUF[HL]W 2 | PSHUFD 2 | PSHUFD 2 | PSHUFD 2 | PSHUFD 2 | SHUFPS 1 | SHUFPD 2 | ||

dynamic shuffle | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 | PSHUFB 3.3 |

Notes:

- The SSE2 integer SIMD mnemonics are the same as the MMX mnemonics; however, using them with SSE XMM registers rather than MMX MM registers generates different instructions.
- There are many more instructions that do not fit in this grid, but these are the most important ones to know.
- * Every move instruction has an aligned (A) and unaligned (U) form. Aligned is faster, but will trap if your address is not a multiple of 16 bytes.
- † Equality (PCMPEQ_) and signed greater-than (PCMPGT_) operations are provided for integer vectors. For signed less-than, invert the operands. For signed less/greater-than-or-equal, perform the PCMPEQ and PCMPGT comparisons and POR the results together. For unsigned tests, bias the inputs by PXORing 0x80, 0x8000, or 0x80000000 to the components.
- ‡ The following floating-point comparison operations are provided: EQ, LT, LE, UNORD, NEQ, NLT, NLE, and ORD. To get greater-than comparisons, invert the operands. LT, LE, NLT, and NLE are ordered comparisons and will raise the Invalid floating-point exception if a NaN is input.

punpckldq xmm0, xmm1 ; xmm0 => ? ? 1 0 punpckldq xmm2, xmm3 ; xmm2 => ? ? 3 2 punpcklqdq xmm0, xmm2 ; xmm0 => 3 2 1 0

movss dst, src1 unpcklps dst, src2 unpcklps src3, src4 movlhps dst, src3

movss dst, src shufps dst, dst, 0x0

movaps xmm1, xmm0 shufps xmm0, xmm1, 0xb1 addps xmm0, xmm1 movaps xmm1, xmm0 shufps xmm0, xmm0, 0x0a addps xmm0, xmm1

order | code |

[{0 0 2 2}] | [{movsldup dst, src}] |

movsd dst, src1 unpcklpd dst, src2

movddup dst, src

movapd xmm1, xmm0 unpckhpd xmm1, xmm1 addsd xmm0, xmm1

For full details, consult Intel's or AMD's instruction set reference documentation.

*This revision created on Mon, 28 Sep 2009 18:00:37 by jckarter
*