From a2d12076b9268c11d300bddcbce04675ec2f42d3 Mon Sep 17 00:00:00 2001
From: Xiaodong Liu <liuxiaodong@loongson.cn>
Date: Thu, 25 Nov 2021 11:41:03 +0800
Subject: [PATCH] cmd/compile/internal/ssa: add support on loong64 for schedule
 phase

Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Id533912c62d8c4e2aa3c124561772b543d685d7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/367041
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
---
 src/cmd/compile/internal/ssa/schedule.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/cmd/compile/internal/ssa/schedule.go b/src/cmd/compile/internal/ssa/schedule.go
index 9b15f20624..2b74c9e420 100644
--- a/src/cmd/compile/internal/ssa/schedule.go
+++ b/src/cmd/compile/internal/ssa/schedule.go
@@ -79,7 +79,7 @@ func (h ValHeap) Less(i, j int) bool {
 func (op Op) isLoweredGetClosurePtr() bool {
 	switch op {
 	case OpAMD64LoweredGetClosurePtr, OpPPC64LoweredGetClosurePtr, OpARMLoweredGetClosurePtr, OpARM64LoweredGetClosurePtr,
-		Op386LoweredGetClosurePtr, OpMIPS64LoweredGetClosurePtr, OpS390XLoweredGetClosurePtr, OpMIPSLoweredGetClosurePtr,
+		Op386LoweredGetClosurePtr, OpMIPS64LoweredGetClosurePtr, OpLOONG64LoweredGetClosurePtr, OpS390XLoweredGetClosurePtr, OpMIPSLoweredGetClosurePtr,
 		OpRISCV64LoweredGetClosurePtr, OpWasmLoweredGetClosurePtr:
 		return true
 	}
@@ -129,7 +129,8 @@ func schedule(f *Func) {
 				v.Op == OpARMLoweredNilCheck || v.Op == OpARM64LoweredNilCheck ||
 				v.Op == Op386LoweredNilCheck || v.Op == OpMIPS64LoweredNilCheck ||
 				v.Op == OpS390XLoweredNilCheck || v.Op == OpMIPSLoweredNilCheck ||
-				v.Op == OpRISCV64LoweredNilCheck || v.Op == OpWasmLoweredNilCheck:
+				v.Op == OpRISCV64LoweredNilCheck || v.Op == OpWasmLoweredNilCheck ||
+				v.Op == OpLOONG64LoweredNilCheck:
 				// Nil checks must come before loads from the same address.
 				score[v.ID] = ScoreNilCheck
 			case v.Op == OpPhi: