-// +build !nacl,!386,!wasm,!arm,!gcflags_noopt
// errorcheck -0 -m
+//go:build !nacl && !386 && !wasm && !arm && !gcflags_noopt
+
// Copyright 2019 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.
// Test, using compiler diagnostic flags, that inlining of functions
// imported from the sync package is working.
// Compiles but does not run.
-// FIXME: nacl-386 is excluded as inlining currently does not work there.
+
+// FIXME: This test is disabled on architectures where atomic operations
+// are function calls rather than intrinsics, since this prevents inlining
+// of the sync fast paths. This test should be re-enabled once the problem
+// is solved.
package foo
func small5() { // ERROR "can inline small5"
// the Unlock fast path should be inlined
- mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock" "&sync\.m\.state escapes to heap"
+ mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock"
+}
+
+func small6() { // ERROR "can inline small6"
+ // the Lock fast path should be inlined
+ mutex.Lock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Lock"
+}
+
+var once *sync.Once
+
+func small7() { // ERROR "can inline small7"
+ // the Do fast path should be inlined
+ once.Do(small5) // ERROR "inlining call to sync\.\(\*Once\)\.Do" "inlining call to atomic\.\(\*Uint32\)\.Load"
+}
+
+var rwmutex *sync.RWMutex
+
+func small8() { // ERROR "can inline small8"
+ // the RUnlock fast path should be inlined
+ rwmutex.RUnlock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RUnlock" "inlining call to atomic\.\(\*Int32\)\.Add"
+}
+
+func small9() { // ERROR "can inline small9"
+ // the RLock fast path should be inlined
+ rwmutex.RLock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RLock" "inlining call to atomic\.\(\*Int32\)\.Add"
}