Use Id.isStrictId

compiler/simplCore/LiberateCase.lhs

@@ -90,7 +90,7 @@ Consider this:
     f = \ t -> case (v `cast` co) of
 	         V a b -> a : f t
 
-Exactly the same optimistaion (unrolling one call to f) will work here, 
+Exactly the same optimisation (unrolling one call to f) will work here, 
 despite the cast.  See mk_alt_env in the Case branch of libCase.
 
 
@@ -108,7 +108,6 @@ big.
 
 Data types
 ~~~~~~~~~~
-
 The ``level'' of a binder tells how many
 recursive defns lexically enclose the binding
 A recursive defn "encloses" its RHS, not its

compiler/simplCore/SimplEnv.lhs

@@ -9,8 +9,6 @@ module SimplEnv (
 	OutId, OutTyVar, OutBind, OutExpr, OutAlt, OutArg, OutType, OutBndr,
         InCoercion, OutCoercion,
 
-	isStrictBndr,
-
 	-- The simplifier mode
 	setMode, getMode, 
 
@@ -92,13 +90,6 @@ type OutAlt	 = CoreAlt
 type OutArg	 = CoreArg
 \end{code}
 
-\begin{code}
-isStrictBndr :: Id -> Bool
-isStrictBndr bndr
-  = ASSERT2( isId bndr, ppr bndr )
-    isStrictDmd (idNewDemandInfo bndr) || isStrictType (idType bndr)
-\end{code}
-
 %************************************************************************
 %*									*
 \subsubsection{The @SimplEnv@ type}
@@ -364,7 +355,7 @@ andFF FltLifted  flt	    = flt
 classifyFF :: CoreBind -> FloatFlag
 classifyFF (Rec _) = FltLifted
 classifyFF (NonRec bndr rhs) 
-  | not (isStrictBndr bndr)  = FltLifted
+  | not (isStrictId bndr)    = FltLifted
   | exprOkForSpeculation rhs = FltOkSpec
   | otherwise		     = FltCareful
 

compiler/simplCore/SimplUtils.lhs

@@ -19,7 +19,7 @@ module SimplUtils (
 	mkBoringStop, mkLazyArgStop, mkRhsStop, contIsRhsOrArg,
 	interestingCallContext, interestingArgContext,
 
-	interestingArg, isStrictBndr, mkArgInfo
+	interestingArg, mkArgInfo
     ) where
 
 #include "HsVersions.h"

compiler/simplCore/Simplify.lhs

@@ -359,7 +359,7 @@ simplNonRecX :: SimplEnv
 simplNonRecX env bndr new_rhs
   = do	{ (env, bndr') <- simplBinder env bndr
 	; completeNonRecX env NotTopLevel NonRecursive
-			  (isStrictBndr bndr) bndr bndr' new_rhs }
+			  (isStrictId bndr) bndr bndr' new_rhs }
 
 completeNonRecX :: SimplEnv
 		-> TopLevelFlag -> RecFlag -> Bool
@@ -842,7 +842,7 @@ simplNonRecE env bndr (rhs, rhs_se) (bndrs, body) cont
   = do	{ tick (PreInlineUnconditionally bndr)
 	; simplLam (extendIdSubst env bndr (mkContEx rhs_se rhs)) bndrs body cont }
 
-  | isStrictBndr bndr
+  | isStrictId bndr
   = do	{ simplExprF (rhs_se `setFloats` env) rhs 
 		     (StrictBind bndr bndrs body env cont) }