Make mkConcSm support a = b style bindings.

This is meant to provide support for assigning a dataconstructor to a
signal (though it will also work for other signals).

diff --git a/VHDL.hs b/VHDL.hs
index 90fc9dd7e9b7cec6e738c1f59b4b71281d6cec0b..72b0a925ec8554753109ff04946eb667a6581c04 100644 (file)
--- a/VHDL.hs
+++ b/VHDL.hs
@@ -269,6 +269,12 @@ mkConcSm ::
 -- the type works out.
 mkConcSm (bndr, Cast expr ty) = mkConcSm (bndr, expr)
 
+-- For simple a = b assignments, just generate an unconditional signal
+-- assignment. This should only happen for dataconstructors without arguments.
+-- TODO: Integrate this with the below code for application (essentially this
+-- is an application without arguments)
+mkConcSm (bndr, Var v) = return $ [mkUncondAssign (Left bndr) (varToVHDLExpr v)]
+
 mkConcSm (bndr, app@(CoreSyn.App _ _))= do
   let (CoreSyn.Var f, args) = CoreSyn.collectArgs app
   let valargs' = filter isValArg args