go/src/cmd/compile/internal/ir/sizeof_test.go
Matthew Dempsky d9acf6f3a3 [dev.regabi] cmd/compile: remove Func.ClosureType
The closure's type always matches the corresponding function's type,
so just use one instance rather than carrying around two. Simplifies
construction of closures, rewriting them during walk, and shrinks
memory usage.

Passes toolstash -cmp.

Change-Id: I83b8b8f435b02ab25a30fb7aa15d5ec7ad97189d
Reviewed-on: https://go-review.googlesource.com/c/go/+/283152
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2021-01-12 23:23:14 +00:00

37 lines
804 B
Go

// Copyright 2016 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.
package ir
import (
"reflect"
"testing"
"unsafe"
)
// Assert that the size of important structures do not change unexpectedly.
func TestSizeof(t *testing.T) {
const _64bit = unsafe.Sizeof(uintptr(0)) == 8
var tests = []struct {
val interface{} // type as a value
_32bit uintptr // size on 32bit platforms
_64bit uintptr // size on 64bit platforms
}{
{Func{}, 188, 328},
{Name{}, 116, 208},
}
for _, tt := range tests {
want := tt._32bit
if _64bit {
want = tt._64bit
}
got := reflect.TypeOf(tt.val).Size()
if want != got {
t.Errorf("unsafe.Sizeof(%T) = %d, want %d", tt.val, got, want)
}
}
}