Revert "Use macro to materialize CompileOptions in Chisel._ (#1257)" (#…

…1269)

This reverts commit 5a0f066.

src/main/scala/chisel3/compatibility.scala

@@ -9,16 +9,11 @@ package object Chisel {     // scalastyle:ignore package.object.name number.of.t
   import chisel3.internal.firrtl.Width
 
   import scala.language.experimental.macros
-  import scala.reflect.macros.blackbox.Context
-  import scala.annotation.{StaticAnnotation, compileTimeOnly}
+  import scala.annotation.StaticAnnotation
+  import scala.annotation.compileTimeOnly
   import scala.language.implicitConversions
 
-
-  /** Default NotStrict CompileOptions for compatibility code
-    *
-    * No longer implicit, materialization macro below provides a low-priority default
-    */
-  val defaultCompileOptions = chisel3.ExplicitCompileOptions.NotStrict
+  implicit val defaultCompileOptions = chisel3.ExplicitCompileOptions.NotStrict
 
   abstract class Direction
   case object INPUT extends Direction
@@ -589,16 +584,6 @@ package object Chisel {     // scalastyle:ignore package.object.name number.of.t
   val Pipe = chisel3.util.Pipe
   type Pipe[T <: Data] = chisel3.util.Pipe[T]
 
-  /** Provides a low priority NotStrict default. Can be overridden by providing a custom implicit
-    *   val in lexical scope (ie. imported)
-    * Implemented as a macro to provide a low-priority default
-    */
-  implicit def materializeCompileOptions: CompileOptions = macro materializeCompileOptions_impl
-
-  def materializeCompileOptions_impl(c: Context): c.Tree = {
-    import c.universe._
-    q"_root_.chisel3.ExplicitCompileOptions.NotStrict"
-  }
 
   /** Package for experimental features, which may have their API changed, be removed, etc.
     *

src/test/scala/chiselTests/CompatibilitySpec.scala

@@ -118,19 +118,6 @@ class CompatibiltySpec extends ChiselFlatSpec with GeneratorDrivenPropertyChecks
     }
     elaborate { new Dummy }
   }
-
-  it should "be able to provide custom CompileOptions" in {
-    implicit val CustomCompileOptions = chisel3.ExplicitCompileOptions.NotStrict.copy(inferModuleReset = true)
-    // Top-level Module always uses Bool so needs to be an inner Module
-    elaborate(new Module {
-      val io = IO(new Bundle {})
-      val inst = Module(new Module {
-        val io = IO(new Bundle {})
-        assert(reset.isInstanceOf[chisel3.ResetType])
-      })
-    })
-  }
-
   // Verify we can elaborate a design expressed in Chisel2
   class Chisel2CompatibleRisc extends Module {
     val io = new Bundle {