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8668d7bbb9
CL 594596 already did this for regabi, but missed non-regabi. Stack allocated swiss maps don't call rand32. For #54766. Change-Id: I312ea77532ecc6fa860adfea58ea00b01683ca69 Reviewed-on: https://go-review.googlesource.com/c/go/+/621615 Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
// errorcheckwithauto -0 -l -live -wb=0 -d=ssa/insert_resched_checks/off
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//go:build !goexperiment.swissmap && !goexperiment.regabiargs
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// For register ABI, liveness info changes slightly. See live_regabi.go.
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// Copyright 2024 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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// non-swissmap-specific tests for live.go
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// TODO(#54766): temporary while fast variants are disabled.
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package main
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// str is used to ensure that a temp is required for runtime calls below.
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func str() string
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var b bool
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var m2 map[[2]string]*byte
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var m2s map[string]*byte
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var x2 [2]string
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func f17b(p *byte) { // ERROR "live at entry to f17b: p$"
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// key temporary
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if b {
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m2s[str()] = p // ERROR "live at call to mapassign_faststr: p$" "live at call to str: p$"
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}
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m2s[str()] = p // ERROR "live at call to mapassign_faststr: p$" "live at call to str: p$"
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m2s[str()] = p // ERROR "live at call to mapassign_faststr: p$" "live at call to str: p$"
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}
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func f17c() {
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// key and value temporaries
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if b {
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m2s[str()] = f17d() // ERROR "live at call to f17d: .autotmp_[0-9]+$" "live at call to mapassign_faststr: .autotmp_[0-9]+$"
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}
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m2s[str()] = f17d() // ERROR "live at call to f17d: .autotmp_[0-9]+$" "live at call to mapassign_faststr: .autotmp_[0-9]+$"
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m2s[str()] = f17d() // ERROR "live at call to f17d: .autotmp_[0-9]+$" "live at call to mapassign_faststr: .autotmp_[0-9]+$"
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}
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func f17d() *byte
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func printnl()
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type T40 struct {
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m map[int]int
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}
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//go:noescape
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func useT40(*T40)
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func good40() {
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ret := T40{} // ERROR "stack object ret T40$"
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ret.m = make(map[int]int) // ERROR "live at call to rand32: .autotmp_[0-9]+$" "stack object .autotmp_[0-9]+ runtime.hmap$"
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t := &ret
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printnl() // ERROR "live at call to printnl: ret$"
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// Note: ret is live at the printnl because the compiler moves &ret
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// from before the printnl to after.
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useT40(t)
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}
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