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go/test/codegen/atomics.go

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cmd/compile,cmd/go,cmd/internal,runtime: remove dynamic checks for atomics for ARM64 targets that support LSE 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>
2024-03-06 07:44:03 -07:00
// 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"
cmd/compile: make sync/atomic AND/OR operations intrinsic on amd64 Update #61395 Change-Id: I59a950f48efc587dfdffce00e2f4f3ab99d8df00 Reviewed-on: https://go-review.googlesource.com/c/go/+/594738 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Nicolas Hillegeer <aktau@google.com>
2024-06-25 15:56:11 -06:00
// amd64:"LOCK",-"CMPXCHG"
cmd/compile,cmd/go,cmd/internal,runtime: remove dynamic checks for atomics for ARM64 targets that support LSE 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>
2024-03-06 07:44:03 -07:00
atomic.AddInt32(&c.count, 1)
}
cmd/compile: make sync/atomic AND/OR operations intrinsic on amd64 Update #61395 Change-Id: I59a950f48efc587dfdffce00e2f4f3ab99d8df00 Reviewed-on: https://go-review.googlesource.com/c/go/+/594738 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Nicolas Hillegeer <aktau@google.com>
2024-06-25 15:56:11 -06:00
func atomicLogical64(x *atomic.Uint64) uint64 {
var r uint64
// arm64/v8.0:"LDCLRALD"
// arm64/v8.1:"LDCLRALD"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// On amd64, make sure we use LOCK+AND instead of CMPXCHG when we don't use the result.
// amd64:"LOCK",-"CMPXCHGQ"
x.And(11)
// arm64/v8.0:"LDCLRALD"
// arm64/v8.1:"LDCLRALD"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// amd64:"LOCK","CMPXCHGQ"
r += x.And(22)
// arm64/v8.0:"LDORALD"
// arm64/v8.1:"LDORALD"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// On amd64, make sure we use LOCK+OR instead of CMPXCHG when we don't use the result.
// amd64:"LOCK",-"CMPXCHGQ"
x.Or(33)
// arm64/v8.0:"LDORALD"
// arm64/v8.1:"LDORALD"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// amd64:"LOCK","CMPXCHGQ"
r += x.Or(44)
return r
}
func atomicLogical32(x *atomic.Uint32) uint32 {
var r uint32
// arm64/v8.0:"LDCLRALW"
// arm64/v8.1:"LDCLRALW"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// On amd64, make sure we use LOCK+AND instead of CMPXCHG when we don't use the result.
// amd64:"LOCK",-"CMPXCHGL"
x.And(11)
// arm64/v8.0:"LDCLRALW"
// arm64/v8.1:"LDCLRALW"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// amd64:"LOCK","CMPXCHGL"
r += x.And(22)
// arm64/v8.0:"LDORALW"
// arm64/v8.1:"LDORALW"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// On amd64, make sure we use LOCK+OR instead of CMPXCHG when we don't use the result.
// amd64:"LOCK",-"CMPXCHGL"
x.Or(33)
// arm64/v8.0:"LDORALW"
// arm64/v8.1:"LDORALW"
// arm64/v8.0:".*arm64HasATOMICS"
// arm64/v8.1:-".*arm64HasATOMICS"
// amd64:"LOCK","CMPXCHGL"
r += x.Or(44)
return r
}
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