diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/codegen/atomics.go | 27 |
1 files changed, 27 insertions, 0 deletions
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) +} + |