From: simonpj <unknown>
Date: Thu, 31 Aug 2000 19:55:46 +0000 (+0000)
Subject: [project @ 2000-08-31 19:55:46 by simonpj]
X-Git-Tag: Approximately_9120_patches~3814
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=83f85baac3f439202848b87fcff6ca4a29b8dfd7;p=ghc-hetmet.git

[project @ 2000-08-31 19:55:46 by simonpj]
Put the max in a better place
---

diff --git a/ghc/compiler/coreSyn/CoreUtils.lhs b/ghc/compiler/coreSyn/CoreUtils.lhs
index 0c01569..5e9736b 100644
--- a/ghc/compiler/coreSyn/CoreUtils.lhs
+++ b/ghc/compiler/coreSyn/CoreUtils.lhs
@@ -570,11 +570,11 @@ exprEtaExpandArity :: CoreExpr -> Int 	-- The number of args the thing can be ap
 -- Hence "generous" arity
 
 exprEtaExpandArity e
-  = go e
+  = go e `max` 0	-- Never go -ve!
   where
     go (Var v)         			= idArity v
     go (App f (Type _))			= go f
-    go (App f a)  | exprIsCheap a	= (go f - 1) `max` 0	-- Never go -ve!
+    go (App f a)  | exprIsCheap a	= go f - 1
     go (Lam x e)  | isId x    		= go e + 1
 		  | otherwise 		= go e
     go (Note n e) | ok_note n		= go e