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https://github.com/golang/go
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5c5552c5ba
Change-Id: I4b2b62a8eb1c4bf47f552214127d4ed5710af196 Reviewed-on: https://go-review.googlesource.com/c/go/+/297030 Trust: David Chase <drchase@google.com> Run-TryBot: David Chase <drchase@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com>
45 lines
1023 B
Go
45 lines
1023 B
Go
// run
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//go:build !wasm
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// +build !wasm
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// Copyright 2021 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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// wasm is excluded because the compiler chatter about register abi pragma ends up
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// on stdout, and causes the expected output to not match.
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package main
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import (
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"fmt"
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)
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var sink int
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//go:registerparams
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//go:noinline
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func F(a, b, c, d, e, f, g, h, i, j, k, l, m *int) {
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G(m, l, k, j, i, h, g, f, e, d, c, b, a)
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// did the pointers get properly updated?
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sink = *a + *m
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}
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//go:registerparams
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//go:noinline
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func G(a, b, c, d, e, f, g, h, i, j, k, l, m *int) {
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// Do not reference the parameters
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var scratch [1000 * 100]int
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I := *c - *e - *l // zero.
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scratch[I] = *d
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fmt.Println("Got this far!")
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sink += scratch[0]
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}
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func main() {
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a, b, c, d, e, f, g, h, i, j, k, l, m := 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
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F(&a, &b, &c, &d, &e, &f, &g, &h, &i, &j, &k, &l, &m)
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fmt.Printf("Sink = %d\n", sink-7)
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}
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