This instruction takes three operands (address, and two datas) but there were only operand sizes for two operands tripping assert in default case. Change-Id: I3f505b6432aee5f3f265acac46b83c0c7daff3e7 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67071 Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>