"cmd/compile/internal/base"
)

// A lang is a language version broken into major and minor numbers.
type lang struct {
	major, minor int
}

// langWant is the desired language version set by the -lang flag.
// If the -lang flag is not set, this is the zero value, meaning that
// any language version is supported.
var langWant lang

// AllowsGoVersion reports whether local package is allowed
// to use Go version major.minor.

</p>

<pre class="grammar">
uint8       the set of all unsigned  8-bit integers (0 to 255)
uint16      the set of all unsigned 16-bit integers (0 to 65535)
uint32      the set of all unsigned 32-bit integers (0 to 4294967295)
uint64      the set of all unsigned 64-bit integers (0 to 18446744073709551615)

int8        the set of all signed  8-bit integers (-128 to 127)
int16       the set of all signed 16-bit integers (-32768 to 32767)

    => ((ULT|UGE) (BTQconst [int8(log64(c))] x))
(SET(NE|EQ) (TESTL (SHLL (MOVLconst [1]) x) y)) => (SET(B|AE)  (BTL x y))
(SET(NE|EQ) (TESTQ (SHLQ (MOVQconst [1]) x) y)) => (SET(B|AE)  (BTQ x y))
(SET(NE|EQ) (TESTLconst [c] x)) && isUint32PowerOfTwo(int64(c))
    => (SET(B|AE)  (BTLconst [int8(log32(c))] x))
(SET(NE|EQ) (TESTQconst [c] x)) && isUint64PowerOfTwo(int64(c))
    => (SET(B|AE)  (BTQconst [int8(log32(c))] x))

#!/usr/bin/env bash
# Copyright 2009 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.

set -e
if [ ! -f make.bash ]; then
	echo 'all.bash must be run from $GOROOT/src' 1>&2
	exit 1
fi
. ./make.bash "$@" --no-banner
bash run.bash --no-rebuild

	telemetry.Start()

	buildcfg.Check()
	GOARCH := buildcfg.GOARCH

	flags.Parse()
	telemetry.Inc("asm/invocations")
	telemetry.CountFlags("asm/flag:", *flag.CommandLine)

	architecture := arch.Set(GOARCH, *flags.Shared || *flags.Dynlink)
	if architecture == nil {
		log.Fatalf("unrecognized architecture %s", GOARCH)
	}
	ctxt := obj.Linknew(architecture.LinkArch)
	ctxt.Debugasm = flags.PrintOut

<!--
NOTE: In this document and others in this directory, the convention is to
set fixed-width phrases with non-fixed-width spaces, as in
`hello` `world`.
-->

<style>
  main ul li { margin: 0.5em 0; }
</style>

## DRAFT RELEASE NOTES — Introduction to Go 1.23 {#introduction}

**Go 1.23 is not yet released. These are work-in-progress release notes.

pkglist     output list of package import paths
func        output coverage profile information for each function
merge       merge data files together
subtract    subtract one set of data files from another set
intersect   generate intersection of two sets of data files
debugdump   dump data in human-readable format for debugging purposes
`)
	fmt.Fprintf(os.Stderr, "\nFor help on a specific subcommand, try:\n")

	// the workspace modules that do not support pruning.
	pruning modPruning

	// rootModules is the set of root modules of the graph, sorted and capped to
	// length. It may contain duplicates, and may contain multiple versions for a
	// given module path. The root modules of the graph are the set of main
	// modules in workspace mode, and the main module's direct requirements
	// outside workspace mode.
	//

	underlying Type           // possibly a *Named during setup; never a *Named once set up completely
	tparams    *TypeParamList // type parameters, or nil

	// methods declared for this type (not the method set of this type)
	// Signatures are type-checked lazily.
	// For non-instantiated types, this is a fully populated list of methods. For

# Test support for go mod edit -go to set language version.

env GO111MODULE=on
! go build
stderr ' type alias requires'
go mod edit -go=1.9
grep 'go 1.9' go.mod
go build

# Reverting the version should force a rebuild and error instead of using
# the cached 1.9 build. (https://golang.org/issue/37804)
go mod edit -go=1.8
! go build
stderr 'type alias requires'

# go=none should drop the line
go mod edit -go=none
! grep go go.mod