import CmmExpr
import CmmTx
import DFMonad
-import Maybes
import PprCmm()
import PprCmmZ()
-import UniqSet
-import ZipDataflow
+import ZipDataflow0
import ZipCfgCmmRep
+import Maybes
+import UniqSet
+
-----------------------------------------------------------------------------
-- Calculating what variables are live on entry to a basic block
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
cmmLivenessZ :: CmmGraph -> BlockEntryLiveness
cmmLivenessZ g = env
- where env = runDFA liveLattice $
- do run_b_anal transfer g
- allFacts
- transfer = BComp "liveness analysis" exit last middle first
+ where env = runDFA liveLattice $ do { run_b_anal transfer g; allFacts }
+ transfer = BComp "liveness analysis" exit last middle first
exit = emptyUniqSet
first live _ = live
middle = flip middleLiveness
middleLiveness :: Middle -> CmmLive -> CmmLive
middleLiveness m = middle m
- where middle (MidNop) = id
- middle (MidComment {}) = id
+ where middle (MidComment {}) = id
middle (MidAssign lhs expr) = gen expr . kill lhs
middle (MidStore addr rval) = gen addr . gen rval
middle (MidUnsafeCall tgt ress args) = gen tgt . gen args . kill ress
+ middle (MidAddToContext ra args) = gen ra . gen args
middle (CopyIn _ formals _) = kill formals
- middle (CopyOut _ formals) = gen formals
+ middle (CopyOut _ actuals) = gen actuals
lastLiveness :: Last -> (BlockId -> CmmLive) -> CmmLive
lastLiveness l env = last l