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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:19:13 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:19:13 +0000
commitccd992355df7192993c666236047820244914598 (patch)
treef00fea65147227b7743083c6148396f74cd66935 /test/abi/many_intstar_input.go
parentInitial commit. (diff)
downloadgolang-1.21-ccd992355df7192993c666236047820244914598.tar.xz
golang-1.21-ccd992355df7192993c666236047820244914598.zip
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/abi/many_intstar_input.go')
-rw-r--r--test/abi/many_intstar_input.go45
1 files changed, 45 insertions, 0 deletions
diff --git a/test/abi/many_intstar_input.go b/test/abi/many_intstar_input.go
new file mode 100644
index 0000000..b209c80
--- /dev/null
+++ b/test/abi/many_intstar_input.go
@@ -0,0 +1,45 @@
+// run
+
+//go:build !wasm
+// +build !wasm
+
+// Copyright 2021 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.
+
+// wasm is excluded because the compiler chatter about register abi pragma ends up
+// on stdout, and causes the expected output to not match.
+
+package main
+
+import (
+ "fmt"
+)
+
+var sink int = 3
+
+//go:registerparams
+//go:noinline
+func F(a, b, c, d, e, f *int) {
+ G(f, e, d, c, b, a)
+ sink += *a // *a == 6 after swapping in G
+}
+
+//go:registerparams
+//go:noinline
+func G(a, b, c, d, e, f *int) {
+ var scratch [1000 * 100]int
+ scratch[*a] = *f // scratch[6] = 1
+ fmt.Println(*a, *b, *c, *d, *e, *f) // Forces it to spill b
+ sink = scratch[*b+1] // scratch[5+1] == 1
+ *f, *a = *a, *f
+ *e, *b = *b, *e
+ *d, *c = *c, *d
+}
+
+func main() {
+ a, b, c, d, e, f := 1, 2, 3, 4, 5, 6
+ F(&a, &b, &c, &d, &e, &f)
+ fmt.Println(a, b, c, d, e, f)
+ fmt.Println(sink)
+}