X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fcmm%2FCmmExpr.hs;h=55a5b73ac50f235942fe81896725573509312ed2;hp=3ae29962134755b038a4c0dde4dfec312f9cc396;hb=b20d5a36b35cf8260554259dc3887a90171c6495;hpb=6a6b16df28a0a38ac93a51767fcd743d04097ac5

diff --git a/compiler/cmm/CmmExpr.hs b/compiler/cmm/CmmExpr.hs
index 3ae2996..55a5b73 100644
--- a/compiler/cmm/CmmExpr.hs
+++ b/compiler/cmm/CmmExpr.hs
@@ -42,8 +42,8 @@ data CmmExpr
   | CmmRegOff CmmReg Int	
 	-- CmmRegOff reg i
 	--        ** is shorthand only, meaning **
-	-- CmmMachOp (MO_S_Add rep (CmmReg reg) (CmmLit (CmmInt i rep)))
-	--	where rep = cmmRegType reg
+	-- CmmMachOp (MO_Add rep) [x, CmmLit (CmmInt (fromIntegral i) rep)]
+	--	where rep = typeWidth (cmmRegType reg)
 
 instance Eq CmmExpr where	-- Equality ignores the types
   CmmLit l1    	    == CmmLit l2    	 = l1==l2
@@ -124,6 +124,8 @@ cmmExprType (CmmReg reg)      	= cmmRegType reg
 cmmExprType (CmmMachOp op args) = machOpResultType op (map cmmExprType args)
 cmmExprType (CmmRegOff reg _)   = cmmRegType reg
 cmmExprType (CmmStackSlot _ _)  = bWord -- an address
+-- Careful though: what is stored at the stack slot may be bigger than
+-- an address
 
 cmmLitType :: CmmLit -> CmmType
 cmmLitType (CmmInt _ width)     = cmmBits  width