From 2fc9d256fc332f9a7dda5e7cfdb229e511d80d15 Mon Sep 17 00:00:00 2001
From: simonpj <unknown>
Date: Thu, 25 Jan 2001 17:08:51 +0000
Subject: [PATCH] [project @ 2001-01-25 17:08:51 by simonpj] Add comment

---
 ghc/compiler/basicTypes/IdInfo.lhs |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ghc/compiler/basicTypes/IdInfo.lhs b/ghc/compiler/basicTypes/IdInfo.lhs
index 79073fa..76cb1f9 100644
--- a/ghc/compiler/basicTypes/IdInfo.lhs
+++ b/ghc/compiler/basicTypes/IdInfo.lhs
@@ -654,6 +654,10 @@ isn't necessarily correct in the transformed program.
 Also forget specialisations and unfoldings because they would need
 substitution to be correct.  (They get pinned back on separately.)
 
+Hoever, we REMEMBER loop-breaker and dead-variable information.  The loop-breaker
+information is used (for example) in MkIface to avoid exposing the unfolding of
+a loop breaker.
+
 \begin{code}
 zapFragileInfo :: IdInfo -> Maybe IdInfo
 zapFragileInfo info@(IdInfo {occInfo		= occ, 
-- 
1.7.10.4