Backport of eager error messages for annotations (3.5.x) (#2700) (#2705)

2 files changed, 5 insertions, 0 deletions

diff --git a/src/main/scala/chisel3/util/experimental/ForceNames.scala b/src/main/scala/chisel3/util/experimental/ForceNames.scala
index 53ee2bd2..3070a210 100644
--- a/src/main/scala/chisel3/util/experimental/ForceNames.scala
+++ b/src/main/scala/chisel3/util/experimental/ForceNames.scala
@@ -3,6 +3,7 @@
 package chisel3.util.experimental
 
 import chisel3.experimental.{annotate, ChiselAnnotation, RunFirrtlTransform}
+import chisel3.internal.Builder
 import firrtl.Mappers._
 import firrtl._
 import firrtl.annotations._
@@ -24,6 +25,7 @@ object forceName {
     * @param name Name to force to
     */
   def apply[T <: chisel3.Element](signal: T, name: String): T = {
+    if (!signal.isSynthesizable) Builder.deprecated(s"Using forceName '$name' on non-hardware value $signal")
     annotate(new ChiselAnnotation with RunFirrtlTransform {
       def toFirrtl = ForceNameAnnotation(signal.toTarget, name)
       override def transformClass: Class[_ <: Transform] = classOf[ForceNamesTransform]
@@ -37,6 +39,7 @@ object forceName {
     * @param signal Signal to name
     */
   def apply[T <: chisel3.Element](signal: T): T = {
+    if (!signal.isSynthesizable) Builder.deprecated(s"Using forceName on non-hardware value $signal")
     annotate(new ChiselAnnotation with RunFirrtlTransform {
       def toFirrtl = ForceNameAnnotation(signal.toTarget, signal.toTarget.ref)
       override def transformClass: Class[_ <: Transform] = classOf[ForceNamesTransform]
diff --git a/src/main/scala/chisel3/util/experimental/decode/decoder.scala b/src/main/scala/chisel3/util/experimental/decode/decoder.scala
index 4feda672..067dd6f8 100644
--- a/src/main/scala/chisel3/util/experimental/decode/decoder.scala
+++ b/src/main/scala/chisel3/util/experimental/decode/decoder.scala
@@ -6,6 +6,7 @@ import chisel3._
 import chisel3.experimental.{annotate, ChiselAnnotation}
 import chisel3.util.{pla, BitPat}
 import chisel3.util.experimental.{getAnnotations, BitSet}
+import chisel3.internal.Builder
 import firrtl.annotations.Annotation
 import logger.LazyLogging
 
@@ -30,6 +31,7 @@ object decoder extends LazyLogging {
       val (plaInput, plaOutput) =
         pla(minimizedTable.table.toSeq, BitPat(minimizedTable.default.value.U(minimizedTable.default.getWidth.W)))
 
+      assert(plaOutput.isSynthesizable, s"Using DecodeTableAnnotation on non-hardware value $plaOutput")
       annotate(new ChiselAnnotation {
         override def toFirrtl: Annotation =
           DecodeTableAnnotation(plaOutput.toTarget, truthTable.toString, minimizedTable.toString)