Da steve101 tree reduce (#485)

* Add a tree reduce function to Vec

* Change function names of reduce operation function in Vec

* Change reference to single layer operation in Vec.reduce

* Commint name change for pair macro

* Remove pair, call not necessary and can just be used from grouped(2) and map

* Changed to reduceTree, added default identity function for single reduce.

* Change style of Vec.reduceTree and tests to chisel3 and canonical Scala style

* Cleanup Vec initialization, implicitCompileOptions

1 files changed, 6 insertions, 0 deletions

diff --git a/coreMacros/src/main/scala/chisel3/internal/sourceinfo/SourceInfoTransform.scala b/coreMacros/src/main/scala/chisel3/internal/sourceinfo/SourceInfoTransform.scala
index e69c569a..d38396f4 100644
--- a/coreMacros/src/main/scala/chisel3/internal/sourceinfo/SourceInfoTransform.scala
+++ b/coreMacros/src/main/scala/chisel3/internal/sourceinfo/SourceInfoTransform.scala
@@ -84,6 +84,12 @@ class VecTransform(val c: Context) extends SourceInfoTransformMacro {
   def contains(x: c.Tree)(ev: c.Tree): c.Tree = {
     q"$thisObj.do_contains($x)($implicitSourceInfo, $ev, $implicitCompileOptions)"
   }
+  def reduceTree(redOp: c.Tree, layerOp: c.Tree): c.Tree = {
+    q"$thisObj.do_reduceTree($redOp,$layerOp)($implicitSourceInfo, $implicitCompileOptions)"
+  }
+  def reduceTreeDefault(redOp: c.Tree ): c.Tree = {
+    q"$thisObj.do_reduceTree($redOp)($implicitSourceInfo, $implicitCompileOptions)"
+  }
 }
 
 /** "Automatic" source information transform / insertion macros, which generate the function name