mirror of
https://github.com/golang/go
synced 2024-11-26 09:58:04 -07:00
0ae8468b20
Remove dynamic checks for atomic instructions for ARM64 targets that support LSE extension. For #66131 Change-Id: I0ec1b183a3f4ea4c8a537430646e6bc4b4f64271 Reviewed-on: https://go-review.googlesource.com/c/go/+/569536 Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Fannie Zhang <Fannie.Zhang@arm.com> Reviewed-by: Shu-Chun Weng <scw@google.com>
28 lines
728 B
Go
28 lines
728 B
Go
// asmcheck
|
|
|
|
// Copyright 2024 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.
|
|
|
|
// These tests check that atomic instructions without dynamic checks are
|
|
// generated for architectures that support them
|
|
|
|
package codegen
|
|
|
|
import "sync/atomic"
|
|
|
|
type Counter struct {
|
|
count int32
|
|
}
|
|
|
|
func (c *Counter) Increment() {
|
|
// Check that ARm64 v8.0 has both atomic instruction (LDADDALW) and a dynamic check
|
|
// (for arm64HasATOMICS), while ARM64 v8.1 has only atomic and no dynamic check.
|
|
// arm64/v8.0:"LDADDALW"
|
|
// arm64/v8.1:"LDADDALW"
|
|
// arm64/v8.0:".*arm64HasATOMICS"
|
|
// arm64/v8.1:-".*arm64HasATOMICS"
|
|
atomic.AddInt32(&c.count, 1)
|
|
}
|
|
|