You copied the Doc URL to your clipboard.

DGH

DGH is a hint instruction. A DGH instruction is not expected to be performance optimal to merge memory accesses with Normal Non-cacheable or Device-GRE attributes appearing in program order before the hint instruction with any memory accesses appearing after the hint instruction into a single memory transaction on an interconnect.

System
(Armv8.6)

313029282726252423222120191817161514131211109876543210
11010101000000110010000011011111
CRmop2

System

DGH

if !HaveDGHExt() then EndOfInstruction();

Operation

Hint_DGH();