/
githubmirror
/
go
Обзор
Документация
Войти
/
githubmirror
/
go
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
test/fixedbugs/splitload_pointer_compare.go
48 строк
923 B
Josh Bleecher Snyder
cmd/compile: preserve pointerness during splitload
15 май 2026, 01:01
15 май 2026, 01:01
80123ef
Код
Авторство
О чём код?
// run // Copyright 2026 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. // splitload rewrites must preserve pointer-typed loads so // spilled values remain visible to stack maps across stack growth. package main type splitLoadObj struct{ x int } var sink byte //go:noinline func splitLoadGrow(n int) { var buf [2048]byte buf[n&2047] = byte(n) if n > 0 { splitLoadGrow(n - 1) } sink = buf[n&2047] } //go:noinline func splitLoadPointerCompare(pp **splitLoadObj, q *splitLoadObj, a, b, m int) int { cond := q == *pp x := a if cond { x = b } z := x & m splitLoadGrow(1000) if cond { return z } return x } func main() { var obj splitLoadObj slot := &obj if got := splitLoadPointerCompare(&slot, &obj, 10, 6, 1); got != 0 { println("splitLoadPointerCompare(...) =", got, "want 0") panic("FAIL") } }