Eliminate a hot closure in ConstFold by inlining

odersky · odersky · commit 85a9257015a8 · 2019-01-19T09:15:34.000+01:00
diff --git a/compiler/src/dotty/tools/dotc/typer/ConstFold.scala b/compiler/src/dotty/tools/dotc/typer/ConstFold.scala
@@ -48,7 +48,7 @@ object ConstFold {
       }
     }
 
-  private def finish[T <: Tree](tree: T)(compX: => Constant)(implicit ctx: Context): T =
+  @forceInline private def finish[T <: Tree](tree: T)(compX: => Constant)(implicit ctx: Context): T =
     try {
       val x = compX
       if (x ne null) tree.withType(ConstantType(x)).asInstanceOf[T]

Original file line number	Diff line number	Diff line change
`@@ -48,7 +48,7 @@ object ConstFold {`
`48`	`48`	`}`
`49`	`49`	`}`
`50`	`50`
`51`		`- private def finish[T <: Tree](tree: T)(compX: => Constant)(implicit ctx: Context): T =`
	`51`	`+ @forceInline private def finish[T <: Tree](tree: T)(compX: => Constant)(implicit ctx: Context): T =`
`52`	`52`	`try {`
`53`	`53`	`val x = compX`
`54`	`54`	`if (x ne null) tree.withType(ConstantType(x)).asInstanceOf[T]`