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authorDmitry Petrashko <dmitry.petrashko@gmail.com>2015-05-12 18:30:53 +0200
committerDmitry Petrashko <dmitry.petrashko@gmail.com>2015-05-12 18:30:53 +0200
commit89bacb9c25a58454ff1878e67f7ea07ffc8c269f (patch)
tree51f1ff6c66aebe1b6109b1cffcc2bb8e4cf760a3 /tests/pending/run/t5313.scala
parenta0fa33deafbea1bf53edc068c5ed9db5592822f9 (diff)
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Run tests as they were in scala.
Diffstat (limited to 'tests/pending/run/t5313.scala')
-rw-r--r--tests/pending/run/t5313.scala54
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diff --git a/tests/pending/run/t5313.scala b/tests/pending/run/t5313.scala
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+import scala.tools.partest.IcodeComparison
+
+object Test extends IcodeComparison {
+ override def printIcodeAfterPhase = "dce"
+
+ override def extraSettings: String = super.extraSettings + " -optimize"
+
+ override def code =
+ """class Foo {
+ def randomBoolean = scala.util.Random.nextInt % 2 == 0
+ def bar = {
+ var kept1 = new Object
+ val result = new java.lang.ref.WeakReference(kept1)
+ kept1 = null // we can't eliminate this assigment because result can observe
+ // when the object has no more references. See SI-5313
+ kept1 = new Object // but we can eliminate this one because kept1 has already been clobbered
+ var erased2 = null // we can eliminate this store because it's never used
+ val erased3 = erased2 // and this
+ var erased4 = erased2 // and this
+ val erased5 = erased4 // and this
+ var kept2: Object = new Object // ultimately can't be eliminated
+ while(randomBoolean) {
+ val kept3 = kept2
+ kept2 = null // this can't, because it clobbers kept2, which is used
+ erased4 = null // safe to eliminate
+ println(kept3)
+ }
+ var kept4 = new Object // have to keep, it's used
+ try
+ println(kept4)
+ catch {
+ case _ : Throwable => kept4 = null // have to keep, it clobbers kept4 which is used
+ }
+ var kept5 = new Object
+ print(kept5)
+ kept5 = null // can't eliminate it's a clobber and it's used
+ print(kept5)
+ kept5 = null // can eliminate because we don't care about clobbers of nulls
+ while(randomBoolean) {
+ var kept6: AnyRef = null // not used, but have to keep because it clobbers the next used store
+ // on the back edge of the loop
+ kept6 = new Object // used
+ println(kept6)
+ }
+ result
+ }
+ }""".stripMargin
+
+ override def show() {
+ val storeLocal = "STORE_LOCAL"
+ val lines1 = collectIcode() filter (_ contains storeLocal) map (x => x.drop(x.indexOf(storeLocal)))
+ println(lines1 mkString "\n")
+ }
+}