8.18 NEON operations not affected by flush-to-zero mode

Some NEON instructions can be carried out on denormalized numbers even in flush-to-zero mode, without flushing the results to zero.

These instructions are as follows:

  • Copy, absolute value, and negate (VMOV, VMVN, V{Q}ABS, and V{Q}NEG).

  • Duplicate (VDUP).

  • Swap (VSWP).

  • Load and store (VLDR and VSTR).

  • Load multiple and store multiple (VLDM and VSTM).

  • Transfer between extension registers and ARM general-purpose registers (VMOV).

Non-ConfidentialPDF file icon PDF versionARM DUI0473M
Copyright © 2010-2016 ARM Limited or its affiliates. All rights reserved.