From fba5a874fc981c425cc89f186ffed3aa61837c16 Mon Sep 17 00:00:00 2001
From: Bo Anderson <mail@boanderson.me>
Date: Sat, 23 Dec 2023 04:02:41 +0000
Subject: [PATCH] os/mac/hardware: use Westmere on >= Ventura

---
 Library/Homebrew/extend/os/mac/hardware.rb | 4 +++-
 Library/Homebrew/hardware.rb               | 5 +++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/extend/os/mac/hardware.rb b/Library/Homebrew/extend/os/mac/hardware.rb
index 8015835b8a596..d984567c6945a 100644
--- a/Library/Homebrew/extend/os/mac/hardware.rb
+++ b/Library/Homebrew/extend/os/mac/hardware.rb
@@ -11,9 +11,11 @@ def self.oldest_cpu(version = nil)
     end
     if CPU.arch == :arm64
       :arm_vortex_tempest
-    # This cannot use a newer CPU e.g. ivybridge because Rosetta 2 does not
+    # This cannot use a newer CPU e.g. haswell because Rosetta 2 does not
     # support AVX instructions in bottles:
     #   https://github.com/Homebrew/homebrew-core/issues/67713
+    elsif version >= :ventura
+      :westmere
     elsif version >= :mojave
       :nehalem
     else
diff --git a/Library/Homebrew/hardware.rb b/Library/Homebrew/hardware.rb
index ed4034c48ad43..182d8e0077dbf 100644
--- a/Library/Homebrew/hardware.rb
+++ b/Library/Homebrew/hardware.rb
@@ -29,10 +29,11 @@ def optimization_flags
           native:             arch_flag("native"),
           ivybridge:          "-march=ivybridge",
           sandybridge:        "-march=sandybridge",
+          westmere:           "-march=westmere",
           nehalem:            "-march=nehalem",
           core2:              "-march=core2",
           core:               "-march=prescott",
-          arm_vortex_tempest: "",
+          arm_vortex_tempest: "", # TODO: -mcpu=apple-m1 when we've patched all our GCCs to support it
           armv6:              "-march=armv6",
           armv8:              "-march=armv8-a",
           ppc64:              "-mcpu=powerpc64",
@@ -225,7 +226,7 @@ def rustflags_target_cpu
       @target_cpu ||= case (cpu = oldest_cpu)
       when :core
         :prescott
-      when :native, :ivybridge, :sandybridge, :nehalem, :core2
+      when :native, :ivybridge, :sandybridge, :westmere, :nehalem, :core2
         cpu
       end
       return if @target_cpu.blank?