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cmd/compile: add register abi tests
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>
This commit is contained in:
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56d52e6611
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@ -1,9 +1,15 @@
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// 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 "fmt"
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@ -7,6 +7,9 @@
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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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45
test/abi/many_intstar_input.go
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45
test/abi/many_intstar_input.go
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@ -0,0 +1,45 @@
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// 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 = 3
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//go:registerparams
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//go:noinline
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func F(a, b, c, d, e, f *int) {
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G(f, e, d, c, b, a)
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sink += *a // *a == 6 after swapping in G
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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 *int) {
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var scratch [1000 * 100]int
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scratch[*a] = *f // scratch[6] = 1
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fmt.Println(*a, *b, *c, *d, *e, *f) // Forces it to spill b
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sink = scratch[*b+1] // scratch[5+1] == 1
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*f, *a = *a, *f
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*e, *b = *b, *e
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*d, *c = *c, *d
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}
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func main() {
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a, b, c, d, e, f := 1, 2, 3, 4, 5, 6
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F(&a, &b, &c, &d, &e, &f)
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fmt.Println(a, b, c, d, e, f)
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fmt.Println(sink)
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}
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3
test/abi/many_intstar_input.out
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3
test/abi/many_intstar_input.out
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@ -0,0 +1,3 @@
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6 5 4 3 2 1
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6 5 4 3 2 1
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7
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44
test/abi/more_intstar_input.go
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44
test/abi/more_intstar_input.go
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@ -0,0 +1,44 @@
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// 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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2
test/abi/more_intstar_input.out
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2
test/abi/more_intstar_input.out
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@ -0,0 +1,2 @@
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Got this far!
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Sink = 7
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94
test/abi/named_return_stuff.go
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94
test/abi/named_return_stuff.go
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@ -0,0 +1,94 @@
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// 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 *string
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var y int
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//go:registerparams
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//go:noinline
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func F(a, b, c *int) (x int) {
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x = *a
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G(&x)
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x += *b
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G(&x)
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x += *c
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G(&x)
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return
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}
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//go:registerparams
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//go:noinline
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func G(x *int) {
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y += *x
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fmt.Println("y = ", y)
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}
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//go:registerparams
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//go:noinline
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func X() {
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*sink += " !!!!!!!!!!!!!!!"
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}
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//go:registerparams
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//go:noinline
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func H(s, t string) (result string) { // result leaks to heap
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result = "Aloha! " + s + " " + t
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sink = &result
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r := ""
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if len(s) <= len(t) {
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r = "OKAY! "
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X()
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}
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return r + result
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}
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//go:registerparams
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//go:noinline
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func K(s, t string) (result string) { // result spills
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result = "Aloha! " + s + " " + t
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r := ""
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if len(s) <= len(t) {
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r = "OKAY! "
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X()
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}
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return r + result
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}
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func main() {
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a, b, c := 1, 4, 16
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x := F(&a, &b, &c)
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fmt.Printf("x = %d\n", x)
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y := H("Hello", "World!")
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fmt.Println("len(y) =", len(y))
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fmt.Println("y =", y)
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z := H("Hello", "Pal!")
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fmt.Println("len(z) =", len(z))
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fmt.Println("z =", z)
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fmt.Println()
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y = K("Hello", "World!")
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fmt.Println("len(y) =", len(y))
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fmt.Println("y =", y)
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z = K("Hello", "Pal!")
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fmt.Println("len(z) =", len(z))
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fmt.Println("z =", z)
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}
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13
test/abi/named_return_stuff.out
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13
test/abi/named_return_stuff.out
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@ -0,0 +1,13 @@
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y = 1
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y = 6
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y = 27
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x = 21
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len(y) = 41
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y = OKAY! Aloha! Hello World! !!!!!!!!!!!!!!!
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len(z) = 17
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z = Aloha! Hello Pal!
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len(y) = 25
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y = OKAY! Aloha! Hello World!
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len(z) = 17
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z = Aloha! Hello Pal!
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38
test/abi/return_stuff.go
Normal file
38
test/abi/return_stuff.go
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@ -0,0 +1,38 @@
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// 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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//go:registerparams
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//go:noinline
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func F(a, b, c *int) int {
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return *a + *b + *c
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}
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//go:registerparams
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//go:noinline
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func H(s, t string) string {
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return s + " " + t
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}
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func main() {
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a, b, c := 1, 4, 16
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x := F(&a, &b, &c)
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fmt.Printf("x = %d\n", x)
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y := H("Hello", "World!")
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fmt.Println("len(y) =", len(y))
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fmt.Println("y =", y)
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}
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3
test/abi/return_stuff.out
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3
test/abi/return_stuff.out
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x = 21
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len(y) = 12
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y = Hello World!
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40
test/abi/struct_3_string_input.go
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40
test/abi/struct_3_string_input.go
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// 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 *string
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type toobig struct {
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a, b, c string
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}
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//go:registerparams
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//go:noinline
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func H(x toobig) string {
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return x.a + " " + x.b + " " + x.c
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}
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func main() {
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s := H(toobig{"Hello", "there,", "World"})
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gotVsWant(s, "Hello there, World")
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}
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func gotVsWant(got, want string) {
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if got != want {
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fmt.Printf("FAIL, got %s, wanted %s\n", got, want)
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}
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}
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0
test/abi/struct_3_string_input.out
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0
test/abi/struct_3_string_input.out
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@ -7,6 +7,9 @@
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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 "fmt"
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