Revert pull request #720 (CPS: enable return expressions in CPS code if they are in tail position)

Reverts commit 0ada0706746c9c603bf5bc8a0e6780e5783297cf.
Reverts commit 51c92f02229098d0b402a65a72267f7a17984022.
Reverts commit cdfbe8e39fbbec00c969cd74f117ae410b98b40b.
Reverts commit 796024c7429a03e974a7d8e1dc5c80b84f82467d.

6 files changed, 0 insertions, 112 deletions

diff --git a/test/files/continuations-run/ts-1681-2.check b/test/files/continuations-run/ts-1681-2.check
deleted file mode 100644
index 35b3c93780..0000000000
--- a/test/files/continuations-run/ts-1681-2.check
+++ /dev/null
@@ -1,5 +0,0 @@
-8
-hi
-8
-from try
-8
diff --git a/test/files/continuations-run/ts-1681-2.scala b/test/files/continuations-run/ts-1681-2.scala
deleted file mode 100644
index 8a896dec2c..0000000000
--- a/test/files/continuations-run/ts-1681-2.scala
+++ /dev/null
@@ -1,44 +0,0 @@
-import scala.util.continuations._
-
-class ReturnRepro { 
-  def s1: Int @cps[Any] = shift { k => k(5) } 
-  def caller = reset { println(p(3)) }
-  def caller2 = reset { println(p2(3)) }
-  def caller3 = reset { println(p3(3)) }
-
-  def p(i: Int): Int @cps[Any] = { 
-    val v= s1 + 3 
-    return v 
-  } 
-
-  def p2(i: Int): Int @cps[Any] = {
-    val v = s1 + 3
-    if (v > 0) {
-      println("hi")
-      return v
-    } else {
-      println("hi")
-      return 8
-    }
-  }
-
-  def p3(i: Int): Int @cps[Any] = {
-    val v = s1 + 3
-    try {
-      println("from try")
-      return v
-    } catch {
-      case e: Exception =>
-        println("from catch")
-        return 7
-    }
-  }
-
-}
-
-object Test extends App {
-  val repro = new ReturnRepro
-  repro.caller
-  repro.caller2
-  repro.caller3
-}
diff --git a/test/files/continuations-run/ts-1681-3.check b/test/files/continuations-run/ts-1681-3.check
deleted file mode 100644
index 71489f097c..0000000000
--- a/test/files/continuations-run/ts-1681-3.check
+++ /dev/null
@@ -1,4 +0,0 @@
-enter return expr
-8
-hi
-8
diff --git a/test/files/continuations-run/ts-1681-3.scala b/test/files/continuations-run/ts-1681-3.scala
deleted file mode 100644
index 62c547f5a2..0000000000
--- a/test/files/continuations-run/ts-1681-3.scala
+++ /dev/null
@@ -1,27 +0,0 @@
-import scala.util.continuations._
-
-class ReturnRepro { 
-  def s1: Int @cpsParam[Any, Unit] = shift { k => k(5) } 
-  def caller = reset { println(p(3)) }
-  def caller2 = reset { println(p2(3)) }
-
-  def p(i: Int): Int @cpsParam[Unit, Any] = { 
-    val v= s1 + 3 
-    return { println("enter return expr"); v }
-  } 
-
-  def p2(i: Int): Int @cpsParam[Unit, Any] = {
-    val v = s1 + 3
-    if (v > 0) {
-      return { println("hi"); v }
-    } else {
-      return { println("hi"); 8 }
-    }
-  }
-}
-
-object Test extends App {
-  val repro = new ReturnRepro
-  repro.caller
-  repro.caller2
-}
diff --git a/test/files/continuations-run/ts-1681.check b/test/files/continuations-run/ts-1681.check
deleted file mode 100644
index 85176d8e66..0000000000
--- a/test/files/continuations-run/ts-1681.check
+++ /dev/null
@@ -1,3 +0,0 @@
-8
-hi
-8
diff --git a/test/files/continuations-run/ts-1681.scala b/test/files/continuations-run/ts-1681.scala
deleted file mode 100644
index efb1abae15..0000000000
--- a/test/files/continuations-run/ts-1681.scala
+++ /dev/null
@@ -1,29 +0,0 @@
-import scala.util.continuations._
-
-class ReturnRepro { 
-  def s1: Int @cpsParam[Any, Unit] = shift { k => k(5) } 
-  def caller = reset { println(p(3)) }
-  def caller2 = reset { println(p2(3)) }
-
-  def p(i: Int): Int @cpsParam[Unit, Any] = { 
-    val v= s1 + 3 
-    return v 
-  } 
-
-  def p2(i: Int): Int @cpsParam[Unit, Any] = {
-    val v = s1 + 3
-    if (v > 0) {
-      println("hi")
-      return v
-    } else {
-      println("hi")
-      return 8
-    }
-  }
-}
-
-object Test extends App {
-  val repro = new ReturnRepro
-  repro.caller
-  repro.caller2
-}