From 0ae8468b204e454314c0f35411b15dc03c89ad30 Mon Sep 17 00:00:00 2001 From: Andrey Bokhanko Date: Wed, 6 Mar 2024 17:44:03 +0300 Subject: 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 Reviewed-by: Cherry Mui LUCI-TryBot-Result: Go LUCI Reviewed-by: Fannie Zhang Reviewed-by: Shu-Chun Weng --- test/codegen/atomics.go | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 test/codegen/atomics.go (limited to 'test') diff --git a/test/codegen/atomics.go b/test/codegen/atomics.go new file mode 100644 index 0000000000..feaa31b9c1 --- /dev/null +++ b/test/codegen/atomics.go @@ -0,0 +1,27 @@ +// 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) +} + -- cgit v1.2.3-54-g00ecf