From: christiaanb <christiaan.baaij@gmail.com>
Date: Tue, 22 Jun 2010 09:40:37 +0000 (+0200)
Subject: Add comment to DEFAULT alternative simplification
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=0e1a00f9a5b95f27cc10b3ffaa6533b6f321fd5c;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

Add comment to DEFAULT alternative simplification
---

diff --git a/clash/CLasH/Normalize.hs b/clash/CLasH/Normalize.hs
index 89f21c0..2778aa2 100644
--- a/clash/CLasH/Normalize.hs
+++ b/clash/CLasH/Normalize.hs
@@ -493,6 +493,8 @@ casesimpl c expr@(Case scrut bndr ty alts) | not bndr_used = do
   doalt alt@(DEFAULT, [], expr) = do
     local_var <- Trans.lift $ is_local_var expr
     repr <- isRepr expr
+    -- Extract any expressions that is not a local var already and is 
+    -- representable (to prevent loops with inlinenonrep).
     (exprbinding_maybe, expr') <- if (not local_var) && repr
       then do
         id <- Trans.lift $ mkBinderFor expr "caseval"