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https://github.com/golang/go
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be4fe08b57
Types are either static (for compiler-created types) or heap allocated and always reachable (for reflection-created types, held in the central map). So there is no need to escape types. With CL 408826 reflect.Value does not always escape. Some functions that escapes Value.typ would make the Value escape without this CL. Had to add a special case for the inliner to keep (*Value).Type still inlineable. Change-Id: I7c14d35fd26328347b509a06eb5bd1534d40775f Reviewed-on: https://go-review.googlesource.com/c/go/+/413474 Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: David Chase <drchase@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
// errorcheck -0 -m
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//go:build !nacl && !386 && !wasm && !arm && !gcflags_noopt
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test, using compiler diagnostic flags, that inlining of functions
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// imported from the sync package is working.
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// Compiles but does not run.
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// FIXME: This test is disabled on architectures where atomic operations
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// are function calls rather than intrinsics, since this prevents inlining
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// of the sync fast paths. This test should be re-enabled once the problem
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// is solved.
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package foo
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import (
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"sync"
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)
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var mutex *sync.Mutex
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func small5() { // ERROR "can inline small5"
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// the Unlock fast path should be inlined
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mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock"
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}
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func small6() { // ERROR "can inline small6"
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// the Lock fast path should be inlined
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mutex.Lock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Lock"
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}
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var once *sync.Once
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func small7() { // ERROR "can inline small7"
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// the Do fast path should be inlined
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once.Do(small5) // ERROR "inlining call to sync\.\(\*Once\)\.Do"
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}
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var rwmutex *sync.RWMutex
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func small8() { // ERROR "can inline small8"
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// the RUnlock fast path should be inlined
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rwmutex.RUnlock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RUnlock" "inlining call to atomic\.\(\*Int32\)\.Add"
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}
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func small9() { // ERROR "can inline small9"
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// the RLock fast path should be inlined
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rwmutex.RLock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RLock" "inlining call to atomic\.\(\*Int32\)\.Add"
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}
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