Multiple threads can execute <code>once.Do(f)</code> for a particular <code>f</code>,
but only one will run <code>f()</code>, and the other calls block
until <code>f()</code> has returned.
</p>

<p class="rule">
The completion of a single call of <code>f()</code> from <code>once.Do(f)</code>
is synchronized before the return of any call of <code>once.Do(f)</code>.
</p>

<p>
In this program:
</p>

pkg container/list, type Element struct
pkg container/list, type Element struct, Value interface{}
pkg container/list, type List struct
pkg container/ring, func New(int) *Ring
pkg container/ring, method (*Ring) Do(func(interface{}))
pkg container/ring, method (*Ring) Len() int
pkg container/ring, method (*Ring) Link(*Ring) *Ring
pkg container/ring, method (*Ring) Move(int) *Ring
pkg container/ring, method (*Ring) Next() *Ring

// Code generated by avx512test. DO NOT EDIT.

#include "../../../../../../runtime/textflag.h"

TEXT asmtest_avx512bw(SB), NOSPLIT, $0
	KADDD K4, K7, K5                                   // c4e1c54aec
	KADDD K6, K7, K5                                   // c4e1c54aee
	KADDD K4, K6, K5                                   // c4e1cd4aec
	KADDD K6, K6, K5                                   // c4e1cd4aee
	KADDD K4, K7, K4                                   // c4e1c54ae4

// Code generated by avx512test. DO NOT EDIT.

#include "../../../../../../runtime/textflag.h"

TEXT asmtest_avx512dq(SB), NOSPLIT, $0
	KADDB K3, K1, K6                                   // c5f54af3
	KADDB K1, K1, K6                                   // c5f54af1
	KADDB K3, K5, K6                                   // c5d54af3
	KADDB K1, K5, K6                                   // c5d54af1
	KADDB K3, K1, K5                                   // c5f54aeb

// int TestPPC64Stubs(void) {
//	return notoc_func();
// }
import "C"
import "testing"

func testPPC64CallStubs(t *testing.T) {
	// Verify the trampolines run on the testing machine. If they
	// do not, or are missing, a crash is expected.
	if C.TestPPC64Stubs() != 0 {
		t.Skipf("This test requires binutils 2.35 or newer.")
	}

// Calling b.Reset(b) (that is, resetting a [Reader] to itself) does nothing.
func (b *Reader) Reset(r io.Reader) {
	// If a Reader r is passed to NewReader, NewReader will return r.
	// Different layers of code may do that, and then later pass r
	// to Reset. Avoid infinite recursion in that case.
	if b == r {
		return
	}
	if b.buf == nil {
		b.buf = make([]byte, defaultBufSize)
	}
	b.reset(b.buf, r)
}

and <code>A</code> through <code>F</code> represent values 10 through 15.
</p>

<p>
For readability, an underscore character <code>_</code> may appear after
a base prefix or between successive digits; such underscores do not change
the literal's value.
</p>
<pre class="ebnf">
int_lit        = decimal_lit | binary_lit | octal_lit | hex_lit .
decimal_lit    = "0" | ( "1" … "9" ) [ [ "_" ] decimal_digits ] .

	-trimpath prefix
		Remove prefix from recorded source file paths.
	-v
		Print debug output.

Input language:

The assembler uses mostly the same syntax for all architectures,
the main variation having to do with addressing modes. Input is
run through a simplified C preprocessor that implements #include,
#define, #ifdef/endif, but not #if or ##.

For more information, see https://golang.org/doc/asm.
*/

non_linux_targets() {
	selectedtargets | grep -v 'linux' | sort
}

# Note words in $targets are separated by both newlines and spaces.
targets="$(linux_targets) $(non_linux_targets)"

failed=false
for target in $targets
do
	echo ""
	echo "### Building $target"
	export GOOS=$(echo $target | sed 's/-.*//')
	export GOARCH=$(echo $target | sed 's/.*-//')
	unset GOARM
	if [ "$GOARCH" = "arm5" ]; then
		export GOARCH=arm
		export GOARM=5

	// it to be ready. adb wait-for-device is not enough, we have to
	// wait for sys.boot_completed.
	if err := adb("wait-for-device", "exec-out", "while [[ -z $(getprop sys.boot_completed) ]]; do sleep 1; done;"); err != nil {
		return 0, err
	}

	// Done once per make.bash.
	if err := adbCopyGoroot(); err != nil {
		return 0, err
	}