X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FLiteral.lhs;h=a5c413ad16ab7a82b29435f2214988f5d5fda7b5;hb=19b0b165a24606dbdb1f4dd7728da7346845a5a0;hp=598b5a49170fcb58b6a54046e15c6633444907fb;hpb=c916244fe9246b4f9d88a9b1c7c9ee8c55b15696;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/Literal.lhs b/compiler/basicTypes/Literal.lhs
index 598b5a4..a5c413a 100644
--- a/compiler/basicTypes/Literal.lhs
+++ b/compiler/basicTypes/Literal.lhs
@@ -16,6 +16,7 @@ module Literal
 
 	, inIntRange, inWordRange, tARGET_MAX_INT, inCharRange
 	, isZeroLit
+	, litFitsInChar
 
 	, word2IntLit, int2WordLit
 	, narrow8IntLit, narrow16IntLit, narrow32IntLit
@@ -284,6 +285,12 @@ litIsDupable :: Literal -> Bool
 litIsDupable (MachStr _) = False
 litIsDupable other	 = True
 
+litFitsInChar :: Literal -> Bool
+litFitsInChar (MachInt i)
+    		         = fromInteger i <= ord minBound 
+                        && fromInteger i >= ord maxBound 
+litFitsInChar _         = False
+
 litSize :: Literal -> Int
 -- Used by CoreUnfold.sizeExpr
 litSize (MachStr str) = 1 + ((lengthFS str + 3) `div` 4)