From 64061790630b8fab97bbc8ada7f558c665e13674 Mon Sep 17 00:00:00 2001
From: George Steed <george.steed@arm.com>
Date: Tue, 19 Mar 2024 09:27:31 +0000
Subject: [PATCH] [AArch64] Add Neon DotProduct and I8MM extensions when
 building

This should allow us to use the two extensions in the existing Neon
inline assembly code for kernels like ARGBToY.

Bug: libyuv:977
Change-Id: I5274b188771bcfbe927cb323f499ecb676a7c6ba
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5383442
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
---
 BUILD.gn | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/BUILD.gn b/BUILD.gn
index 691a033ea..32cc013f4 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -232,7 +232,9 @@ if (libyuv_use_neon) {
       configs += [ "//build/config/compiler:optimize_max" ]
     }
 
-    if (current_cpu != "arm64") {
+    if (current_cpu == "arm64") {
+      cflags = [ "-march=armv8-a+dotprod+i8mm" ]
+    } else {
       configs -= [ "//build/config/compiler:compiler_arm_fpu" ]
       cflags = [ "-mfpu=neon" ]
     }