From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Tue, 16 Apr 2024 21:19:13 +0200
Subject: Adding upstream version 1.21.8.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/runtime/cpuflags_amd64.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/runtime/cpuflags_amd64.go

(limited to 'src/runtime/cpuflags_amd64.go')

diff --git a/src/runtime/cpuflags_amd64.go b/src/runtime/cpuflags_amd64.go
new file mode 100644
index 0000000..8cca4bc
--- /dev/null
+++ b/src/runtime/cpuflags_amd64.go
@@ -0,0 +1,24 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime
+
+import (
+	"internal/cpu"
+)
+
+var useAVXmemmove bool
+
+func init() {
+	// Let's remove stepping and reserved fields
+	processor := processorVersionInfo & 0x0FFF3FF0
+
+	isIntelBridgeFamily := isIntel &&
+		processor == 0x206A0 ||
+		processor == 0x206D0 ||
+		processor == 0x306A0 ||
+		processor == 0x306E0
+
+	useAVXmemmove = cpu.X86.HasAVX && !isIntelBridgeFamily
+}
-- 
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