[PATCH] D142410: [AArch64] ARMv8.5-A implies both FEAT_SB and FEAT_SSBS

Tue Jan 24 02:48:52 PST 2023

philipp.tomsich added a comment.

When looking at "ARM DDI 0487G.a", on page A2-68 under the heading "Additional functionality added to Armv8.0 in later releases" in the definition-list item "FEAT_SSBS, Speculative Store Bypass Safe":

> This feature is OPTIONAL in Armv8.0 implementations and mandatory in Armv8.5 implementations.

There is a to FEAT_SBSS in the backlink in "A2.8 The Armv8.5 architecture extension", under the subsection "A2.8.3 Features added to earlier extensions", in the bullet-list labeled "The features that have been added to earlier architectural extensions are:"

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142410/new/

https://reviews.llvm.org/D142410