From add773aa5d3af794c935345b193de1865945aa4e Mon Sep 17 00:00:00 2001
From: simonpj <unknown>
Date: Tue, 23 Sep 2003 15:09:09 +0000
Subject: [PATCH] [project @ 2003-09-23 15:09:09 by simonpj]
 --------------------------      Make MachString literals a
 bit bigger 	   --------------------------

Up to now, unboxed string literals of up to 3 characters had
size 1, which means they are inlined in place of a variable.
That seems over-eager (duplication), so I've upped their size a bit.
---
 ghc/compiler/basicTypes/Literal.lhs |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ghc/compiler/basicTypes/Literal.lhs b/ghc/compiler/basicTypes/Literal.lhs
index d71bedf..edc77b7 100644
--- a/ghc/compiler/basicTypes/Literal.lhs
+++ b/ghc/compiler/basicTypes/Literal.lhs
@@ -288,10 +288,12 @@ litIsDupable other	 = True
 
 litSize :: Literal -> Int
 -- Used by CoreUnfold.sizeExpr
-litSize (MachStr str) = 1 + (lengthFS str `div` 4)
+litSize (MachStr str) = 1 + ((lengthFS str + 3) `div` 4)
 	-- Every literal has size at least 1, otherwise
 	-- 	f "x" 
 	-- might be too small
+	-- [Sept03: make literal strings a bit bigger to avoid fruitless 
+	--  duplication of little strings]
 litSize _other	      = 1
 \end{code}
 
-- 
1.7.10.4