2 files changed, 7 insertions, 5 deletions
diff --git a/src/main/scala/chisel3/compatibility.scala b/src/main/scala/chisel3/compatibility.scala
index fbe37f50..ff627c1e 100644
--- a/src/main/scala/chisel3/compatibility.scala
+++ b/src/main/scala/chisel3/compatibility.scala
@@ -90,15 +90,15 @@ package object Chisel {     // scalastyle:ignore package.object.name
     def width(width: Width): SInt = apply(width)
 
     /** Create an SInt literal with inferred width. */
-    def apply(value: BigInt): SInt = value.S
+    def apply(value: BigInt): SInt = value.asSInt
     /** Create an SInt literal with fixed width. */
-    def apply(value: BigInt, width: Int): SInt = value.S(width.W)
+    def apply(value: BigInt, width: Int): SInt = value.asSInt(width.W)
 
     /** Create an SInt literal with specified width. */
-    def apply(value: BigInt, width: Width): SInt = value.S(width)
+    def apply(value: BigInt, width: Width): SInt = value.asSInt(width)
 
-    def Lit(value: BigInt): SInt = value.S
-    def Lit(value: BigInt, width: Int): SInt = value.S(width.W)
+    def Lit(value: BigInt): SInt = value.asSInt
+    def Lit(value: BigInt, width: Int): SInt = value.asSInt(width.W)
 
     /** Create a SInt with a specified width - compatibility with Chisel2. */
     def apply(dir: Option[Direction] = None, width: Int): SInt = apply(width.W)
diff --git a/src/main/scala/chisel3/util/ImplicitConversions.scala b/src/main/scala/chisel3/util/ImplicitConversions.scala
index 7f715ad4..c2ba710d 100644
--- a/src/main/scala/chisel3/util/ImplicitConversions.scala
+++ b/src/main/scala/chisel3/util/ImplicitConversions.scala
@@ -5,6 +5,8 @@ package chisel3.util
 import chisel3._
 
 object ImplicitConversions {
+  // The explicit fromIntToLiteral resolves an ambiguous conversion between fromIntToLiteral and
+  // UInt.asUInt.
   implicit def intToUInt(x: Int): UInt = chisel3.core.fromIntToLiteral(x).asUInt
   implicit def booleanToBool(x: Boolean): Bool = x.asBool
 }