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SIMD: Difference between revisions

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*<tt>[http://www.sesp.cse.clrc.ac.uk/html/SoftwareTools/vtune/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc180.htm movapd]</tt> -- move two packed doubles from a 16-byte-aligned memory location to XMM registers, or vice versa, or between two XMM registers.
*<tt>[http://www.sesp.cse.clrc.ac.uk/html/SoftwareTools/vtune/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc180.htm movapd]</tt> -- move two packed doubles from a 16-byte-aligned memory location to XMM registers, or vice versa, or between two XMM registers.
*<tt>[http://www.sesp.cse.clrc.ac.uk/html/SoftwareTools/vtune/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc209.htm mulpd]</tt> -- the multiplier is a 16-byte-aligned memory location or XMM register. the target XMM register serves as the multiplicand.
*<tt>[http://www.sesp.cse.clrc.ac.uk/html/SoftwareTools/vtune/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc209.htm mulpd]</tt> -- the multiplier is a 16-byte-aligned memory location or XMM register. the target XMM register serves as the multiplicand.
==SSE==
*<tt>[http://www.sesp.cse.clrc.ac.uk/html/SoftwareTools/vtune/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc181.htm movaps]</tt> -- move four packed singles from a 16-byte-aligned memory location to XMM registers, or vice versa, or between two XMM registers.


===Fused Multiply-Add===
===Fused Multiply-Add===
* The [http://en.wikipedia.org/wiki/FMA_instruction_set FMA instruction set] extension to x86 should hit around 2011
* The [http://en.wikipedia.org/wiki/FMA_instruction_set FMA instruction set] extension to x86 should hit around 2011
==Other Architectures==
==Other Architectures==
* PowerPC implements [http://en.wikipedia.org/wiki/AltiVec AltiVec]
* PowerPC implements [http://en.wikipedia.org/wiki/AltiVec AltiVec]

Revision as of 18:36, 19 September 2009

x86

  • AVX (Advanced Vector eXtensions) -- to be introduced on Intel's Sandy Bridge (2010) and AMD's Bulldozer (2011), and implemented within the VEX coding scheme

SSE3

  • movddup -- move a double from a 8-byte-aligned memory location or lower half of XMM register to upper half, then duplicate upper half to lower half

SSE2

  • movapd -- move two packed doubles from a 16-byte-aligned memory location to XMM registers, or vice versa, or between two XMM registers.
  • mulpd -- the multiplier is a 16-byte-aligned memory location or XMM register. the target XMM register serves as the multiplicand.

SSE

  • movaps -- move four packed singles from a 16-byte-aligned memory location to XMM registers, or vice versa, or between two XMM registers.

Fused Multiply-Add

Other Architectures

See Also