cmd/compile: revert user-visible changes related to aliases

Reason: Decision to back out current alias implementation.

Leaving import/export related code in place for now.

For #16339.

TBR=mdempsky

Change-Id: Ib0897cab2c1c3dc8a541f2efb9893271b0b0efe2
Reviewed-on: https://go-review.googlesource.com/32757
Reviewed-by: Robert Griesemer <gri@golang.org>

3 files changed, 0 insertions, 181 deletions

diff --git a/test/alias3.dir/a.go b/test/alias3.dir/a.go
deleted file mode 100644
index c14f834630..0000000000
--- a/test/alias3.dir/a.go
+++ /dev/null
@@ -1,54 +0,0 @@
-// 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 a
-
-import (
-	"bytes"
-	"go/build"
-	"io"
-	"math"
-)
-
-func F(c *build.Context, w io.Writer) {}
-
-func Inlined() bool { var w Writer; return w == nil }
-
-func Check() {
-	if Pi != math.Pi {
-		panic(0)
-	}
-
-	var w Writer
-	F(new(Context), w)
-	F(new(build.Context), bytes.NewBuffer(nil))
-
-	if &Default != &build.Default {
-		panic(1)
-	}
-
-	if Sin(1) != math.Sin(1) {
-		panic(2)
-	}
-
-	var _ *LimitedReader = new(LimitedReader2)
-}
-
-// export aliases
-const Pi => math.Pi
-
-type (
-	Context => build.Context // not an interface
-	Writer  => io.Writer     // interface
-)
-
-// different aliases may refer to the same original
-type LimitedReader => io.LimitedReader
-type LimitedReader2 => io.LimitedReader
-
-var Default => build.Default
-var Default2 => build.Default
-
-func Sin => math.Sin
-func Sin2 => math.Sin
diff --git a/test/alias3.dir/b.go b/test/alias3.dir/b.go
deleted file mode 100644
index d4550feca5..0000000000
--- a/test/alias3.dir/b.go
+++ /dev/null
@@ -1,61 +0,0 @@
-// 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 b
-
-import (
-	"./a"
-	"bytes"
-	"go/build"
-	"io"
-	"math"
-)
-
-func F => a.F
-func Inlined => a.Inlined
-
-var _ func(*Context, io.Writer) = a.F
-
-// check aliases
-func Check() {
-	if Pi != math.Pi {
-		panic(0)
-	}
-
-	var w Writer
-	a.F(new(Context), w)
-	F(new(build.Context), bytes.NewBuffer(nil))
-
-	if !Inlined() {
-		panic(1)
-	}
-
-	if &Default != &build.Default {
-		panic(2)
-	}
-
-	if Sin(1) != math.Sin(1) {
-		panic(3)
-	}
-
-	var _ *LimitedReader = new(LimitedReader2)
-}
-
-// re-export aliases
-const Pi => a.Pi
-
-type (
-	Context => a.Context // not an interface
-	Writer  => a.Writer  // interface
-)
-
-// different aliases may refer to the same original
-type LimitedReader => a.LimitedReader
-type LimitedReader2 => a.LimitedReader2
-
-var Default => a.Default
-var Default2 => a.Default2
-
-func Sin => a.Sin
-func Sin2 => a.Sin
diff --git a/test/alias3.dir/c.go b/test/alias3.dir/c.go
deleted file mode 100644
index 701483fac2..0000000000
--- a/test/alias3.dir/c.go
+++ /dev/null
@@ -1,66 +0,0 @@
-// 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 main
-
-import (
-	"./a"
-	"./b"
-	"bytes"
-	"go/build"
-	"math"
-)
-
-func f => b.F
-func inlined => b.Inlined
-
-var _ func(*context, a.Writer) = f
-
-func Check() {
-	if pi != math.Pi {
-		panic(0)
-	}
-
-	var w writer
-	b.F(new(context), w)
-	f(new(build.Context), bytes.NewBuffer(nil))
-
-	if !inlined() {
-		panic(1)
-	}
-
-	if &default_ != &build.Default {
-		panic(2)
-	}
-
-	if sin(1) != math.Sin(1) {
-		panic(3)
-	}
-
-	var _ *limitedReader = new(limitedReader2)
-}
-
-// local aliases
-const pi => b.Pi
-
-type (
-	context => b.Context // not an interface
-	writer  => b.Writer  // interface
-)
-
-// different aliases may refer to the same original
-type limitedReader => b.LimitedReader
-type limitedReader2 => b.LimitedReader2
-
-var default_ => b.Default
-var default2 => b.Default2
-
-func sin => b.Sin
-func sin2 => b.Sin
-
-func main() {
-	a.Check()
-	b.Check()
-	Check()
-}