Developer Reference

  • 0.10
  • 10/21/2020
  • Public Content
Contents

Vector Indexing Methods

Classic VM mathematical functions work with unit stride. Strided VM mathematical functions work with positive increments. To accommodate arrays with more complicated indexing, you can gather the elements into a contiguous vector and then scatter them after the computation is complete.
VM Pack/Unpack functions use the following indexing methods to do this task:
  • positive increment
  • index vector
  • mask vector
The indexing method used in a particular function is indicated by the indexing modifier (see the description of the
<mod>
field in Function Naming Conventions). For more information on the indexing methods, see Vector Arguments in VM.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804