From e7307034ccdd3c3e482f80b9ea6d4a69bb04d7b6 Mon Sep 17 00:00:00 2001
From: cuiweixie <cuiweixie@gmail.com>
Date: Fri, 5 Aug 2022 14:01:57 +0000
Subject: cmd/compile: store combine on amd64

Fixes #54120

Change-Id: I6915b6e8d459d9becfdef4fdcba95ee4dea6af05
GitHub-Last-Rev: 03f19942c7a697d3b5e696e700a9827633d709bb
GitHub-Pull-Request: golang/go#54126
Reviewed-on: https://go-review.googlesource.com/c/go/+/420115
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
---
 test/codegen/memcombine.go | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test/codegen')

diff --git a/test/codegen/memcombine.go b/test/codegen/memcombine.go
index 1427f7a7d5..6e0132744c 100644
--- a/test/codegen/memcombine.go
+++ b/test/codegen/memcombine.go
@@ -369,6 +369,14 @@ func store_le64_idx(b []byte, x uint64, idx int) {
 	binary.LittleEndian.PutUint64(b[idx:], x)
 }
 
+func store_le64_idx2(dst []byte, d, length, offset int) []byte {
+	a := dst[d : d+length]
+	b := dst[d-offset:]
+	// amd64:`MOVQ\s.*\(.*\)\(.*\*1\)$`,-`SHR.`
+	binary.LittleEndian.PutUint64(a, binary.LittleEndian.Uint64(b))
+	return dst
+}
+
 func store_le64_load(b []byte, x *[8]byte) {
 	_ = b[8]
 	// amd64:-`MOV[BWL]`
-- 
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