SSE

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

Vector types

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
  • float-4
  • double-2

Instruction set

The number next to each instruction is the SSE version:

char-16 uchar-16short-8 ushort-8int-4 uint-4 float-4 double-2
move MOVQ 2 MOVQ 2 MOVQ 2 MOVQ 2 MOVQ 2 MOVQ 2 MOVPS 1 MOVPD 2
add PADDB 2 PADDB 2 PADDW 2 PADDW 2 PADDD 2 PADDD 2 ADDPS 1 ADDPD 2
subtractPSUBB 2 PSUBB 2 PSUBW 2 PSUBW 2 PSUBD 2 PSUBD 2 SUBPS 1 SUBPD 2
add with saturation PADDSB 2 PADDUSB 2 PADDSW 2 PADDUSW 2
subtract with saturation PSUBSB 2 PSUBUSB 2 PSUBSW 2 PSUBUSW 2
add-subtract ADDSUBPS 3 ADDSUBPD 3
horizontal addPHADDW 3.3PHADDW 3.3PHADDD 3.3PHADDW 3.3HADDPS 3HADDPS 3
multiply PMULLW 2 PMULLW 2 PMULLD 2 PMULLD 2 MULPS 1 MULPD 2
divide DIVPS 1 DIVPD 2
absolute value PABSB 3.3 PABSW 3.3 PABSD 3.3
minimum PMINUB 2 PMINSW 2 MINPS 1 MINPD 2
maximum PMAXUB 2 PMAXSW 2 MAXPS 1 MAXPD 2
approximate reciprocalRCPSS 1RCPSD 2
square rootSQRTSS 1SQRTSD 2

Idioms

int-4

Gather four integers into a vector

float-4

Gather four floats into a vector

Broadcast float into four components

Absolute value

Horizontal add with SSE2

double-2

Gather two doubles into a vector

Broadcast double into two components

Absolute value

Horizontal add with SSE2

References

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

This revision created on Wed, 23 Sep 2009 00:23:52 by slava