mirror of
https://github.com/golang/go
synced 2024-11-25 06:37:58 -07:00
ea69de9b92
[This is a roll-forward of CL 484859, this time including a fix for issue #59709. The call to do dead function marking was taking place in the wrong spot, causing it to run more than once if generics were instantiated.] This patch generalizes the code in the inliner that marks unreferenced hidden closure functions as dead. Rather than doing the marking on the fly (previous approach), this new approach does a single pass at the end of inlining, which catches more dead functions. Change-Id: I0e079ad755c21295477201acbd7e1a732a98fffd Reviewed-on: https://go-review.googlesource.com/c/go/+/492016 Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Run-TryBot: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
66 lines
1004 B
Go
66 lines
1004 B
Go
// build -gcflags=-l=4
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// Copyright 2023 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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package p
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type Interface interface {
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MonitoredResource() (resType string, labels map[string]string)
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Done()
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}
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func Autodetect(x int) Interface {
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return func() Interface {
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func() Interface {
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x++
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Do(func() {
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var ad, gd Interface
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go func() {
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defer gd.Done()
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ad = aad()
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}()
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go func() {
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defer ad.Done()
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gd = aad()
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defer func() { recover() }()
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}()
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autoDetected = ad
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if gd != nil {
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autoDetected = gd
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}
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})
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return autoDetected
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}()
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return nil
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}()
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}
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var autoDetected Interface
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var G int
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type If int
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func (x If) MonitoredResource() (resType string, labels map[string]string) {
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return "", nil
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}
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//go:noinline
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func (x If) Done() {
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G++
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}
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//go:noinline
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func Do(fn func()) {
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fn()
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}
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//go:noinline
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func aad() Interface {
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var x If
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return x
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}
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