From fa706ea50fd0b9bf36d642d3bb8eeb732caafc7f Mon Sep 17 00:00:00 2001
From: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Date: Thu, 21 Aug 2025 16:52:02 +0800
Subject: cmd/compile: optimize rule (x + x) << c to x << c+1 on loong64

Change-Id: I782f93510bba92ba60b298c1c1cde456c8bcec38
Reviewed-on: https://go-review.googlesource.com/c/go/+/697956
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
---
 test/codegen/shift.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'test/codegen')

diff --git a/test/codegen/shift.go b/test/codegen/shift.go
index 0e4cf1ed8d..3ab0fcfabc 100644
--- a/test/codegen/shift.go
+++ b/test/codegen/shift.go
@@ -121,21 +121,25 @@ func rshConst64x32(v int64) int64 {
 
 func lshConst32x1Add(x int32) int32 {
 	// amd64:"SHLL\t[$]2"
+	// loong64:"SLL\t[$]2"
 	return (x + x) << 1
 }
 
 func lshConst64x1Add(x int64) int64 {
 	// amd64:"SHLQ\t[$]2"
+	// loong64:"SLLV\t[$]2"
 	return (x + x) << 1
 }
 
 func lshConst32x2Add(x int32) int32 {
 	// amd64:"SHLL\t[$]3"
+	// loong64:"SLL\t[$]3"
 	return (x + x) << 2
 }
 
 func lshConst64x2Add(x int64) int64 {
 	// amd64:"SHLQ\t[$]3"
+	// loong64:"SLLV\t[$]3"
 	return (x + x) << 2
 }
 
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