cmd/compile, cmd/link: create from 5g, 5l, etc

Trivial merging of 5g, 6g, ... into go tool compile,
and similarlly 5l, 6l, ... into go tool link.
The files compile/main.go and link/main.go are new.
Everything else in those directories is a move followed by
change of imports and package name.

This CL breaks the build. Manual fixups are in the next CL.

See golang-dev thread titled "go tool compile, etc" for background.

Change-Id: Id35ff5a5859ad9037c61275d637b1bd51df6828b
Reviewed-on: https://go-review.googlesource.com/10287Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Rob Pike <r@golang.org>

src/cmd/6l/z.go

-package main

src/cmd/6g/cgen.go → src/cmd/compile/internal/amd64/cgen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 )

src/cmd/6g/galign.go → src/cmd/compile/internal/amd64/galign.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 )
@@ -65,7 +65,7 @@ func betypeinit() {
 	}
 }
 
-func main() {
+func Main() {
 	if obj.Getgoos() == "nacl" {
 		resvd = append(resvd, x86.REG_BP, x86.REG_R15)
 	} else if obj.Framepointer_enabled != 0 {

src/cmd/6g/ggen.go → src/cmd/compile/internal/amd64/ggen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 )

src/cmd/6g/gsubr.go → src/cmd/compile/internal/amd64/gsubr.go

@@ -28,11 +28,11 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
-	"cmd/internal/gc/big"
+	"cmd/compile/internal/big"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 	"fmt"

src/cmd/6g/peep.go → src/cmd/compile/internal/amd64/peep.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 	"fmt"

src/cmd/6g/prog.go → src/cmd/compile/internal/amd64/prog.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 )

src/cmd/6g/reg.go → src/cmd/compile/internal/amd64/reg.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package amd64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/x86"
 )

src/cmd/5g/cgen.go → src/cmd/compile/internal/arm/cgen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 )

src/cmd/5g/cgen64.go → src/cmd/compile/internal/arm/cgen64.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 )

src/cmd/5g/galign.go → src/cmd/compile/internal/arm/galign.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 )
@@ -37,7 +37,7 @@ func betypeinit() {
 	gc.Widthreg = 4
 }
 
-func main() {
+func Main() {
 	gc.Thearch.Thechar = thechar
 	gc.Thearch.Thestring = thestring
 	gc.Thearch.Thelinkarch = thelinkarch

src/cmd/5g/ggen.go → src/cmd/compile/internal/arm/ggen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 )

src/cmd/5g/gsubr.go → src/cmd/compile/internal/arm/gsubr.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 	"fmt"

src/cmd/5g/peep.go → src/cmd/compile/internal/arm/peep.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 	"fmt"

src/cmd/5g/prog.go → src/cmd/compile/internal/arm/prog.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm"
 )

src/cmd/5g/reg.go → src/cmd/compile/internal/arm/reg.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm
 
 import "cmd/internal/obj/arm"
-import "cmd/internal/gc"
+import "cmd/compile/internal/gc"
 
 const (
 	NREGVAR = 32

src/cmd/7g/cgen.go → src/cmd/compile/internal/arm64/cgen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 )

src/cmd/7g/galign.go → src/cmd/compile/internal/arm64/galign.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 )
@@ -37,7 +37,7 @@ func betypeinit() {
 	gc.Widthreg = 8
 }
 
-func main() {
+func Main() {
 	gc.Thearch.Thechar = thechar
 	gc.Thearch.Thestring = thestring
 	gc.Thearch.Thelinkarch = thelinkarch

src/cmd/7g/ggen.go → src/cmd/compile/internal/arm64/ggen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 	"fmt"

src/cmd/7g/gsubr.go → src/cmd/compile/internal/arm64/gsubr.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 	"fmt"

src/cmd/7g/peep.go → src/cmd/compile/internal/arm64/peep.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 	"fmt"

src/cmd/7g/prog.go → src/cmd/compile/internal/arm64/prog.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/arm64"
 )

src/cmd/7g/reg.go → src/cmd/compile/internal/arm64/reg.go

@@ -28,10 +28,10 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-package main
+package arm64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj/arm64"
 )
 

src/cmd/internal/gc/const.go → src/cmd/compile/internal/gc/const.go

@@ -5,7 +5,7 @@
 package gc
 
 import (
-	"cmd/internal/gc/big"
+	"cmd/compile/internal/big"
 	"cmd/internal/obj"
 	"strings"
 )

src/cmd/internal/gc/go.go → src/cmd/compile/internal/gc/go.go

@@ -6,7 +6,7 @@ package gc
 
 import (
 	"bytes"
-	"cmd/internal/gc/big"
+	"cmd/compile/internal/big"
 	"cmd/internal/obj"
 )
 

src/cmd/internal/gc/mparith2.go → src/cmd/compile/internal/gc/mparith2.go

@@ -5,7 +5,7 @@
 package gc
 
 import (
-	"cmd/internal/gc/big"
+	"cmd/compile/internal/big"
 	"cmd/internal/obj"
 	"fmt"
 )

src/cmd/internal/gc/mparith3.go → src/cmd/compile/internal/gc/mparith3.go

@@ -5,7 +5,7 @@
 package gc
 
 import (
-	"cmd/internal/gc/big"
+	"cmd/compile/internal/big"
 	"cmd/internal/obj"
 	"fmt"
 	"math"

src/cmd/9g/cgen.go → src/cmd/compile/internal/ppc64/cgen.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package ppc64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/ppc64"
 )

src/cmd/9g/galign.go → src/cmd/compile/internal/ppc64/galign.go

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package ppc64
 
 import (
-	"cmd/internal/gc"
+	"cmd/compile/internal/gc"
 	"cmd/internal/obj"
 	"cmd/internal/obj/ppc64"
 )
@@ -45,7 +45,7 @@ func betypeinit() {
 	gc.Widthreg = 8
 }
 
-func main() {
+func Main() {
 	gc.Thearch.Thechar = thechar
 	gc.Thearch.Thestring = thestring
 	gc.Thearch.Thelinkarch = thelinkarch