emit loop flatten off pragmas

cucapra · Nov 21, 2019 · 1777f8c · 1777f8c
1 parent e05016a
commit 1777f8c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/main/scala/backends/VivadoBackend.scala b/src/main/scala/backends/VivadoBackend.scala
@@ -15,8 +15,8 @@ private class VivadoBackend extends CppLike {
   """.stripMargin.trim)
 
   def unroll(n: Int): Doc = n match {
-    case 1 => emptyDoc
-    case n => value(s"#pragma HLS UNROLL factor=$n skip_exit_check") <@> line
+    case 1 => value(s"#pragma HLS LOOP_FLATTEN off")
+    case n => value(s"#pragma HLS LOOP_FLATTEN off") <@> value(s"#pragma HLS UNROLL factor=$n skip_exit_check") <@> line
   }
 
   def interfaceValid(decls: List[Decl]) =