Cmm back end upgrades

[ghc-hetmet.git] / compiler / cmm / Cmm.hs

diff --git a/compiler/cmm/Cmm.hs b/compiler/cmm/Cmm.hs
index afa47a2..2d13c45 100644 (file)
--- a/compiler/cmm/Cmm.hs
+++ b/compiler/cmm/Cmm.hs
@@ -18,11 +18,13 @@ module Cmm (
         CmmReturnInfo(..),
        CmmStmt(..), CmmActual, CmmActuals, CmmFormal, CmmFormals, CmmKind,
         CmmFormalsWithoutKinds, CmmFormalWithoutKind,
+        CmmKinded(..),
         CmmSafety(..),
        CmmCallTarget(..),
        CmmStatic(..), Section(..),
         module CmmExpr,
-        BlockId(..), freshBlockId,
+
+        BlockId(..), mkBlockId,
         BlockEnv, emptyBlockEnv, lookupBlockEnv, extendBlockEnv, mkBlockEnv,
         BlockSet, emptyBlockSet, elemBlockSet, extendBlockSet,
   ) where
@@ -40,10 +42,10 @@ import FastString
 
 import Data.Word
 
-import ZipCfg (        BlockId(..), freshBlockId
-              , BlockEnv, emptyBlockEnv, lookupBlockEnv, extendBlockEnv, mkBlockEnv
-              , BlockSet, emptyBlockSet, elemBlockSet, extendBlockSet
-              )
+import StackSlot (     BlockId(..), mkBlockId
+                 , BlockEnv, emptyBlockEnv, lookupBlockEnv, extendBlockEnv, mkBlockEnv
+                 , BlockSet, emptyBlockSet, elemBlockSet, extendBlockSet
+                 )
 
 -- A [[BlockId]] is a local label.
 -- Local labels must be unique within an entire compilation unit, not
@@ -239,8 +241,10 @@ data CmmStmt
       CmmActuals         -- with these return values.
 
 type CmmKind   = MachHint
-type CmmActual = (CmmExpr, CmmKind)
-type CmmFormal = (LocalReg,CmmKind)
+data CmmKinded a = CmmKinded { kindlessCmm :: a, cmmKind :: CmmKind }
+                         deriving (Eq)
+type CmmActual = CmmKinded CmmExpr
+type CmmFormal = CmmKinded LocalReg
 type CmmActuals = [CmmActual]
 type CmmFormals = [CmmFormal]
 type CmmFormalWithoutKind   = LocalReg
@@ -249,8 +253,8 @@ type CmmFormalsWithoutKinds = [CmmFormalWithoutKind]
 data CmmSafety      = CmmUnsafe | CmmSafe C_SRT
 
 -- | enable us to fold used registers over 'CmmActuals' and 'CmmFormals'
-instance UserOfLocalRegs a => UserOfLocalRegs (a, CmmKind) where
-  foldRegsUsed f set (a, _) = foldRegsUsed f set a
+instance UserOfLocalRegs a => UserOfLocalRegs (CmmKinded a) where
+  foldRegsUsed f set (CmmKinded a _) = foldRegsUsed f set a
 
 instance UserOfLocalRegs CmmStmt where
   foldRegsUsed f set s = stmt s set
@@ -270,6 +274,15 @@ instance UserOfLocalRegs CmmCallTarget where
     foldRegsUsed f set (CmmCallee e _) = foldRegsUsed f set e
     foldRegsUsed _ set (CmmPrim {})    = set
 
+instance DefinerOfLocalRegs a => DefinerOfLocalRegs (CmmKinded a) where
+  foldRegsDefd f z (CmmKinded x _) = foldRegsDefd f z x
+
+
+--just look like a tuple, since it was a tuple before
+-- ... is that a good idea? --Isaac Dupree
+instance (Outputable a) => Outputable (CmmKinded a) where
+  ppr (CmmKinded a k) = ppr (a, k)
+
 {-
 Discussion
 ~~~~~~~~~~
@@ -325,6 +338,7 @@ data CmmCallTarget
   | CmmPrim            -- Call a "primitive" (eg. sin, cos)
        CallishMachOp           -- These might be implemented as inline
                                -- code by the backend.
+  deriving Eq
 
 -----------------------------------------------------------------------------
 --             Static Data