, DefinerOfSlots, UserOfSlots, foldSlotsDefd, foldSlotsUsed
, RegSet, emptyRegSet, elemRegSet, extendRegSet, deleteFromRegSet, mkRegSet
, plusRegSet, minusRegSet, timesRegSet
+ , regUsedIn
, Area(..), AreaId(..), SubArea, SubAreaSet, AreaMap, isStackSlotOf
-- MachOp
import CLabel
import Constants
import FastString
-import FiniteMap
import Outputable
import Unique
import UniqSet
import Data.Word
import Data.Int
+import Data.Map (Map)
-----------------------------------------------------------------------------
-- CmmExpr
End of note -}
type SubArea = (Area, Int, Int) -- area, offset, width
-type SubAreaSet = FiniteMap Area [SubArea]
+type SubAreaSet = Map Area [SubArea]
-type AreaMap = FiniteMap Area Int
+type AreaMap = Map Area Int
-- Byte offset of the oldest byte of the Area,
-- relative to the oldest byte of the Old Area
foldRegsDefd _ set Nothing = set
foldRegsDefd f set (Just x) = foldRegsDefd f set x
+-----------------------------------------------------------------------------
+-- Another reg utility
+
+regUsedIn :: CmmReg -> CmmExpr -> Bool
+_ `regUsedIn` CmmLit _ = False
+reg `regUsedIn` CmmLoad e _ = reg `regUsedIn` e
+reg `regUsedIn` CmmReg reg' = reg == reg'
+reg `regUsedIn` CmmRegOff reg' _ = reg == reg'
+reg `regUsedIn` CmmMachOp _ es = any (reg `regUsedIn`) es
+_ `regUsedIn` CmmStackSlot _ _ = False
-----------------------------------------------------------------------------
-- Stack slots