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Test pack for various flavors of reflection. #25

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merged 1 commit into from Dec 5, 2011

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xeno-by
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@xeno-by xeno-by commented Dec 4, 2011

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@gkossakowski
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Isn't it more test pack for lifting code than reflection?

@xeno-by
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xeno-by commented Dec 4, 2011

Well, lifting itself is a pretty small chunk of code. The reflection infrastructure (e.g. tree classes, exposed API, importers, toolboxes) is the most interesting part. That's why in my mental model reflection subsumes reification.

Also, most of the tests not only lift the code, but also typecheck, compile and run it, which I think, all relate to reflection and reflective compilation.

Finally, rough edges usually appear at junction points between the reflection infrastructure and the compiler, which also suggests that the tests are about reflection more than about anything else.

@paulp paulp merged commit 7193d21 into scala:master Dec 5, 2011
gkossakowski added a commit to gkossakowski/scala that referenced this pull request Jan 11, 2012
Get rid of RedBlack.scala for a while.
som-snytt added a commit to som-snytt/scala that referenced this pull request Jul 16, 2013
The REPL :java -app command is a convenience to locate
the body of DelayedInit code.  Now it will look for
new style delayedEndpoints on the class before it
falls back to showing the apply method of the
delayedInit$body closure.

```
apm@mara:~/tmp$ skala
Welcome to Scala version 2.11.0-20130711-153246-eb1c3137f5 (OpenJDK 64-Bit Server VM, Java 1.7.0_21).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :javap -pv -app delayed.C
  public final void delayedEndpoint$delayed$C$1();
    flags: ACC_PUBLIC, ACC_FINAL
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     scala#29                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
         3: ldc           scala#31                 // String this is the initialization code of C
         5: invokevirtual scala#35                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
         8: return
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
               0       9     0  this   Ldelayed/C;
      LineNumberTable:
        line 11: 0

scala> :q
apm@mara:~/tmp$ rm delayed/*.class
apm@mara:~/tmp$ scalac delayed.scala
apm@mara:~/tmp$ skala
Welcome to Scala version 2.11.0-20130711-153246-eb1c3137f5 (OpenJDK 64-Bit Server VM, Java 1.7.0_21).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :javap -pv -app delayed.C
  public final java.lang.Object apply();
    flags: ACC_PUBLIC, ACC_FINAL
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     scala#13                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
         3: ldc           scala#15                 // String this is the initialization code of C
         5: invokevirtual scala#19                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
         8: getstatic     scala#25                 // Field scala/runtime/BoxedUnit.UNIT:Lscala/runtime/BoxedUnit;
        11: areturn
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
               0      12     0  this   Ldelayed/C$delayedInit$body;
      LineNumberTable:
        line 11: 0
        line 10: 8
```
retronym referenced this pull request in retronym/scala Mar 30, 2016
Rather than in implementation of the abstract method in the
expanded anonymous class.

This leads to more more efficient use of the constant pool,
code shapes more amenable to SAM inlining, and is compatible
with the old behaviour of `-Xexperimental` in Scala 2.11,
which ScalaJS now relies upon.

Manual test:

```
scala> :paste -raw
// Entering paste mode (ctrl-D to finish)

package p1; trait T { val x = 0; def apply(): Any }; class DelambdafyInline { def t: T = (() => "") }

// Exiting paste mode, now interpreting.

scala> :javap -c p1.DelambdafyInline
Compiled from "<pastie>"
public class p1.DelambdafyInline {
  public p1.T t();
    Code:
       0: new           #10                 // class p1/DelambdafyInline$$anonfun$t$1
       3: dup
       4: aload_0
       5: invokespecial #16                 // Method p1/DelambdafyInline$$anonfun$t$1."<init>":(Lp1/DelambdafyInline;)V
       8: areturn

  public final java.lang.Object p1$DelambdafyInline$$$anonfun$1();
    Code:
       0: ldc           #22                 // String
       2: areturn

  public p1.DelambdafyInline();
    Code:
       0: aload_0
       1: invokespecial #25                 // Method java/lang/Object."<init>":()V
       4: return
}

scala> :javap -c p1.DelambdafyInline$$anonfun$t$1
Compiled from "<pastie>"
public final class p1.DelambdafyInline$$anonfun$t$1 implements p1.T,scala.Serializable {
  public static final long serialVersionUID;

  public int x();
    Code:
       0: aload_0
       1: getfield      #25                 // Field x:I
       4: ireturn

  public void p1$T$_setter_$x_$eq(int);
    Code:
       0: aload_0
       1: iload_1
       2: putfield      #25                 // Field x:I
       5: return

  public final java.lang.Object apply();
    Code:
       0: aload_0
       1: getfield      #34                 // Field $outer:Lp1/DelambdafyInline;
       4: invokevirtual #37                 // Method p1/DelambdafyInline.p1$DelambdafyInline$$$anonfun$1:()Ljava/lang/Object;
       7: areturn

  public p1.DelambdafyInline$$anonfun$t$1(p1.DelambdafyInline);
    Code:
       0: aload_1
       1: ifnonnull     6
       4: aconst_null
       5: athrow
       6: aload_0
       7: aload_1
       8: putfield      #34                 // Field $outer:Lp1/DelambdafyInline;
      11: aload_0
      12: invokespecial #42                 // Method java/lang/Object."<init>":()V
      15: aload_0
      16: invokespecial #45                 // Method p1/T.$init$:()V
      19: return
}

scala> :quit
```
retronym referenced this pull request in retronym/scala Mar 30, 2016
Rather than in implementation of the abstract method in the
expanded anonymous class.

This leads to more more efficient use of the constant pool,
code shapes more amenable to SAM inlining, and is compatible
with the old behaviour of `-Xexperimental` in Scala 2.11,
which ScalaJS now relies upon.

Manual test:

```
scala> :paste -raw
// Entering paste mode (ctrl-D to finish)

package p1; trait T { val x = 0; def apply(): Any }; class DelambdafyInline { def t: T = (() => "") }

// Exiting paste mode, now interpreting.

scala> :javap -c p1.DelambdafyInline
Compiled from "<pastie>"
public class p1.DelambdafyInline {
  public p1.T t();
    Code:
       0: new           #10                 // class p1/DelambdafyInline$$anonfun$t$1
       3: dup
       4: aload_0
       5: invokespecial #16                 // Method p1/DelambdafyInline$$anonfun$t$1."<init>":(Lp1/DelambdafyInline;)V
       8: areturn

  public final java.lang.Object p1$DelambdafyInline$$$anonfun$1();
    Code:
       0: ldc           #22                 // String
       2: areturn

  public p1.DelambdafyInline();
    Code:
       0: aload_0
       1: invokespecial #25                 // Method java/lang/Object."<init>":()V
       4: return
}

scala> :javap -c p1.DelambdafyInline$$anonfun$t$1
Compiled from "<pastie>"
public final class p1.DelambdafyInline$$anonfun$t$1 implements p1.T,scala.Serializable {
  public static final long serialVersionUID;

  public int x();
    Code:
       0: aload_0
       1: getfield      #25                 // Field x:I
       4: ireturn

  public void p1$T$_setter_$x_$eq(int);
    Code:
       0: aload_0
       1: iload_1
       2: putfield      #25                 // Field x:I
       5: return

  public final java.lang.Object apply();
    Code:
       0: aload_0
       1: getfield      #34                 // Field $outer:Lp1/DelambdafyInline;
       4: invokevirtual #37                 // Method p1/DelambdafyInline.p1$DelambdafyInline$$$anonfun$1:()Ljava/lang/Object;
       7: areturn

  public p1.DelambdafyInline$$anonfun$t$1(p1.DelambdafyInline);
    Code:
       0: aload_1
       1: ifnonnull     6
       4: aconst_null
       5: athrow
       6: aload_0
       7: aload_1
       8: putfield      #34                 // Field $outer:Lp1/DelambdafyInline;
      11: aload_0
      12: invokespecial #42                 // Method java/lang/Object."<init>":()V
      15: aload_0
      16: invokespecial #45                 // Method p1/T.$init$:()V
      19: return
}

scala> :quit
```
adriaanm pushed a commit that referenced this pull request Mar 31, 2016
Rather than in implementation of the abstract method in the
expanded anonymous class.

This leads to more more efficient use of the constant pool,
code shapes more amenable to SAM inlining, and is compatible
with the old behaviour of `-Xexperimental` in Scala 2.11,
which ScalaJS now relies upon.

Manual test:

```
scala> :paste -raw
// Entering paste mode (ctrl-D to finish)

package p1; trait T { val x = 0; def apply(): Any }; class DelambdafyInline { def t: T = (() => "") }

// Exiting paste mode, now interpreting.

scala> :javap -c p1.DelambdafyInline
Compiled from "<pastie>"
public class p1.DelambdafyInline {
  public p1.T t();
    Code:
       0: new           #10                 // class p1/DelambdafyInline$$anonfun$t$1
       3: dup
       4: aload_0
       5: invokespecial #16                 // Method p1/DelambdafyInline$$anonfun$t$1."<init>":(Lp1/DelambdafyInline;)V
       8: areturn

  public final java.lang.Object p1$DelambdafyInline$$$anonfun$1();
    Code:
       0: ldc           #22                 // String
       2: areturn

  public p1.DelambdafyInline();
    Code:
       0: aload_0
       1: invokespecial #25                 // Method java/lang/Object."<init>":()V
       4: return
}

scala> :javap -c p1.DelambdafyInline$$anonfun$t$1
Compiled from "<pastie>"
public final class p1.DelambdafyInline$$anonfun$t$1 implements p1.T,scala.Serializable {
  public static final long serialVersionUID;

  public int x();
    Code:
       0: aload_0
       1: getfield      #25                 // Field x:I
       4: ireturn

  public void p1$T$_setter_$x_$eq(int);
    Code:
       0: aload_0
       1: iload_1
       2: putfield      #25                 // Field x:I
       5: return

  public final java.lang.Object apply();
    Code:
       0: aload_0
       1: getfield      #34                 // Field $outer:Lp1/DelambdafyInline;
       4: invokevirtual #37                 // Method p1/DelambdafyInline.p1$DelambdafyInline$$$anonfun$1:()Ljava/lang/Object;
       7: areturn

  public p1.DelambdafyInline$$anonfun$t$1(p1.DelambdafyInline);
    Code:
       0: aload_1
       1: ifnonnull     6
       4: aconst_null
       5: athrow
       6: aload_0
       7: aload_1
       8: putfield      #34                 // Field $outer:Lp1/DelambdafyInline;
      11: aload_0
      12: invokespecial #42                 // Method java/lang/Object."<init>":()V
      15: aload_0
      16: invokespecial #45                 // Method p1/T.$init$:()V
      19: return
}

scala> :quit
```

Adriaan is to `git blame` for `reflection-mem-typecheck.scala`.
retronym referenced this pull request in retronym/scala May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 5, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 9, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 11, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 11, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 17, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 25, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info]   public void $init$();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #32                 // Method $init$:(LT;)V
[info]        4: return
[info] }
```
retronym referenced this pull request in retronym/scala May 30, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala May 30, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala May 31, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala May 31, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 1, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
retronym referenced this pull request in retronym/scala Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.

The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.

I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.

```
> ;scalac sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokespecial #17                 // Method T.$init$:()V
[info]        8: getstatic     #23                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #24                 // String C
[info]       13: invokevirtual #28                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokespecial #32                 // Method T.foo:()I
[info]       20: pop
[info]       21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test

[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info]   public C();
[info]     Code:
[info]        0: aload_0
[info]        1: invokespecial #14                 // Method java/lang/Object."<init>":()V
[info]        4: aload_0
[info]        5: invokestatic  #18                 // Method T.$init$:(LT;)V
[info]        8: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]       11: ldc           #25                 // String C
[info]       13: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]       16: aload_0
[info]       17: invokestatic  #33                 // Method T.foo:(LT;)I
[info]       20: pop
[info]       21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info]   public static int foo(T);
[info]     Code:
[info]        0: iconst_0
[info]        1: ireturn
[info]
[info]   public int foo();
[info]     Code:
[info]        0: aload_0
[info]        1: invokestatic  #15                 // Method foo:(LT;)I
[info]        4: ireturn
[info]
[info]   public static void $init$(T);
[info]     Code:
[info]        0: getstatic     #24                 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info]        3: ldc           #25                 // String T
[info]        5: invokevirtual #29                 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info]        8: return
[info]
[info] }
```
lrytz pushed a commit to lrytz/scala that referenced this pull request May 9, 2018
Unlike normal diff, the git diff feature wasn't using the filtered
check file under `--show-diff`.

Now the sample displays just the bad line.

```
!! 1 - neg/t7494-no-options                      [output differs]
% diff /home/apm/projects/snytt/test/files/neg/t7494-no-options-neg.log /home/apm/projects/snytt/test/files/neg/t7494-no-options.check
@@ -1,7 +1,7 @@
 error: Error: ploogin takes no options
     phase name  id  description
     ----------  --  -----------
-        parser   1  parse source into ASTs, perform simple desugaring
+        parser   0  parse source into ASTs, perform simple desugaring
          namer   2  resolve names, attach symbols to named trees
 packageobjects   3  load package objects
          typer   4  the meat and potatoes: type the trees
```
lrytz pushed a commit to lrytz/scala that referenced this pull request May 9, 2018
Unlike normal diff, the git diff feature wasn't using the filtered
check file under `--show-diff`.

Now the sample displays just the bad line.

```
!! 1 - neg/t7494-no-options                      [output differs]
% diff /home/apm/projects/snytt/test/files/neg/t7494-no-options-neg.log /home/apm/projects/snytt/test/files/neg/t7494-no-options.check
@@ -1,7 +1,7 @@
 error: Error: ploogin takes no options
     phase name  id  description
     ----------  --  -----------
-        parser   1  parse source into ASTs, perform simple desugaring
+        parser   0  parse source into ASTs, perform simple desugaring
          namer   2  resolve names, attach symbols to named trees
 packageobjects   3  load package objects
          typer   4  the meat and potatoes: type the trees
```
sjrd pushed a commit to sjrd/scala that referenced this pull request Aug 19, 2018
Optimize use of hash maps in makeLocal in the back end
da-liii pushed a commit to da-liii/scala that referenced this pull request Nov 11, 2018
bishabosha added a commit to bishabosha/scala that referenced this pull request Jan 27, 2020
bishabosha added a commit to bishabosha/scala that referenced this pull request Jan 27, 2020
bishabosha added a commit to bishabosha/scala that referenced this pull request Jan 28, 2020
lrytz pushed a commit that referenced this pull request Jul 7, 2020
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