[llvm-branch-commits] [llvm] release/23.x: [docs] Add BOLT release notes (PR #211522)

[Tobias Hieta via llvm-branch-commits]

https://github.com/tru updated https://github.com/llvm/llvm-project/pull/211522

>From 5d610051fc6aaaf6d10abe1c1bae5e0fd266b2b2 Mon Sep 17 00:00:00 2001
From: Paschalis Mpeis <paschalis.mpeis at arm.com>
Date: Thu, 23 Jul 2026 11:58:01 +0100
Subject: [PATCH] [docs] Add BOLT release notes

---
 llvm/docs/ReleaseNotes.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index 65b5a0cbecc01..925d0d16006fd 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -528,6 +528,20 @@ Makes programs 10x faster by doing Special New Thing.
 
 ### Changes to BOLT
 
+* BOLT supports AArch64 binaries using Pointer Authentication (PAC) and Branch
+  Target Identification (BTI). For PAC-enabled binaries, BOLT preserves pointer
+  authentication CFI state during optimization. For BTI-enabled binaries, BOLT
+  can patch PLT entries or indirect branch targets with BTI landing pads where
+  possible.
+
+* BOLT adds compact-code-model support for Armv9.6-A FEAT_CMPBR
+  compare-and-branch instructions, including support for block reordering,
+  function splitting, branch inversion where legal.
+
+* BOLT supports AArch64 profile data collected with Arm SPE and branch-stack
+  profiles from hardware such as BRBE. LLVM 23 adds pre-parsed perf-script and
+  profile-format support for these workflows.
+
 ### Changes to Sanitizers
 
 * Add a random delay into ThreadSanitizer to help find rare thread interleavings.