Re-write and Re-enable optimizer tests

Rewrite tests for new optimizer
  - SI-6941
  - SI-2171
  - t3430
  - t3252
  - t4840
  - t2171
  - t3430
  - t3252
  - t6157
  - t6547
  - t8062
  - t8306
  - t8359
  - t9123
  - trait-force-info
  - private-inline

test cases for bugs fixed in the new optimizer
  - SI-9160, the unnecessary boxing mentioned in the ticket is optimzied
    since push-pop elimination (#4858).
  - SI-8796
  - SI-8524
  - SI-7807

fix flags file for t3420

remove an empty flags file

remove unnecessary partest filters

explicit inliner warnings in test t7582

Restore the lisp test. Removing the flags file - our build runs with the
(new) optimizer enabled anyway.

The test spent the past few years as an optimizer test in pos/
see https://issues.scala-lang.org/browse/SI-4512. The attempt may fail,
but why not give it a try.

$ git lg -S"lisp"

...
| * | | | f785785 - SI-4579 Yoke the power of lisp.scala as a stress for the optimizer. (3 years, 8 months ago) <Jason Zaugg>
...
* | | | | | | 622cc99 - Revert the lisp test. (3 years, 10 months ago) <Paul Phillips>
...
* | | | | | | 97f0324 - Revived the lisp test. (3 years, 10 months ago) <Paul Phillips>
...
* | 1e0f7dc - Imprison the lisp test, no review. (4 years, 4 months ago) <Paul Phillips>
...
* | 6b09630 - "Freed the lisp test." Tweaked partest defaults... (4 years, 6 months ago) <Paul Phillips>
...
* | fec42c1 - Lisp test wins again, no review. (4 years, 8 months ago) <Paul Phillips>
...
* | 1c2d44d - Restored the lisp.scala test. (4 years, 8 months ago) <Paul Phillips>
...
* | 15ed892 - Temporarily sending lisp.scala to be interprete... (4 years, 8 months ago) <Paul Phillips>
...

3 files changed, 0 insertions, 27 deletions

diff --git a/test/files/jvm/t6941/Analyzed_1.flags b/test/files/jvm/t6941/Analyzed_1.flags
deleted file mode 100644
index ad51758c39..0000000000
--- a/test/files/jvm/t6941/Analyzed_1.flags
+++ /dev/null
@@ -1 +0,0 @@
--nowarn
diff --git a/test/files/jvm/t6941/Analyzed_1.scala b/test/files/jvm/t6941/Analyzed_1.scala
deleted file mode 100644
index b6951f71ee..0000000000
--- a/test/files/jvm/t6941/Analyzed_1.scala
+++ /dev/null
@@ -1,11 +0,0 @@
-// this class's bytecode, compiled under -optimize is analyzed by the test
-// method a's bytecode should be identical to method b's bytecode
-class SameBytecode {
-  def a(xs: List[Int]) = xs match {
-    case x :: _ => x
-  }
-
-  def b(xs: List[Int]) = xs match {
-    case xs: ::[Int] => xs.head
-  }
-}
\ No newline at end of file
diff --git a/test/files/jvm/t6941/test.scala b/test/files/jvm/t6941/test.scala
deleted file mode 100644
index fceb54487f..0000000000
--- a/test/files/jvm/t6941/test.scala
+++ /dev/null
@@ -1,15 +0,0 @@
-import scala.tools.partest.{BytecodeTest, ASMConverters}
-
-import scala.tools.nsc.util.JavaClassPath
-import java.io.InputStream
-import scala.tools.asm
-import asm.ClassReader
-import asm.tree.{ClassNode, InsnList}
-import scala.collection.JavaConverters._
-
-object Test extends BytecodeTest {
-  def show: Unit = {
-    val classNode = loadClassNode("SameBytecode")
-    similarBytecode(getMethod(classNode, "a"), getMethod(classNode, "b"), ASMConverters.equivalentBytecode(_, _))
-  }
-}