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SIMD: Difference between revisions
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<tt>[http://www.intel.com/software/products/documentation/vlin/mergedprojects/analyzer_ec/mergedprojects/reference_olh/mergedProjects/instructions/instruct32_hh/movddup--move_one_double-fp_and_duplicate.htm movddup]</tt> -- 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 | <tt>[http://www.intel.com/software/products/documentation/vlin/mergedprojects/analyzer_ec/mergedprojects/reference_olh/mergedProjects/instructions/instruct32_hh/movddup--move_one_double-fp_and_duplicate.htm movddup]</tt> -- 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=== | ===SSE2=== | ||
<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. | |||
===Fused Multiply-Add=== | ===Fused Multiply-Add=== | ||
Revision as of 18:34, 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.
Fused Multiply-Add
- The FMA instruction set extension to x86 should hit around 2011
Other Architectures
- PowerPC implements AltiVec
See Also
- "Why no FMA in AVX in Sandy Bridge?", Intel Developers Forum
- SSE5 guide at AMD
